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| author | Anton Luka Šijanec <anton@sijanec.eu> | 2024-05-27 13:08:29 +0200 |
|---|---|---|
| committer | Anton Luka Šijanec <anton@sijanec.eu> | 2024-05-27 13:08:29 +0200 |
| commit | 75160b12821f7f4299cce7f0b69c83c1502ae071 (patch) | |
| tree | 27e25e4ccaef45f0c58b22831164050d1af1d4db /vendor/paragonie/sodium_compat/src | |
| parent | prvi-commit (diff) | |
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Diffstat (limited to '')
21 files changed, 15561 insertions, 15763 deletions
diff --git a/vendor/paragonie/sodium_compat/src/Compat.php b/vendor/paragonie/sodium_compat/src/Compat.php index 286d37e..3afe97c 100644 --- a/vendor/paragonie/sodium_compat/src/Compat.php +++ b/vendor/paragonie/sodium_compat/src/Compat.php @@ -1,3947 +1,4002 @@ -<?php
-
-/**
- * Libsodium compatibility layer
- *
- * This is the only class you should be interfacing with, as a user of
- * sodium_compat.
- *
- * If the PHP extension for libsodium is installed, it will always use that
- * instead of our implementations. You get better performance and stronger
- * guarantees against side-channels that way.
- *
- * However, if your users don't have the PHP extension installed, we offer a
- * compatible interface here. It will give you the correct results as if the
- * PHP extension was installed. It won't be as fast, of course.
- *
- * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION *
- * *
- * Until audited, this is probably not safe to use! DANGER WILL ROBINSON *
- * *
- * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION *
- */
-
-if (class_exists('ParagonIE_Sodium_Compat', false)) {
- return;
-}
-
-class ParagonIE_Sodium_Compat
-{
- /**
- * This parameter prevents the use of the PECL extension.
- * It should only be used for unit testing.
- *
- * @var bool
- */
- public static $disableFallbackForUnitTests = false;
-
- /**
- * Use fast multiplication rather than our constant-time multiplication
- * implementation. Can be enabled at runtime. Only enable this if you
- * are absolutely certain that there is no timing leak on your platform.
- *
- * @var bool
- */
- public static $fastMult = false;
-
- const LIBRARY_MAJOR_VERSION = 9;
- const LIBRARY_MINOR_VERSION = 1;
- const LIBRARY_VERSION_MAJOR = 9;
- const LIBRARY_VERSION_MINOR = 1;
- const VERSION_STRING = 'polyfill-1.0.8';
-
- // From libsodium
- const BASE64_VARIANT_ORIGINAL = 1;
- const BASE64_VARIANT_ORIGINAL_NO_PADDING = 3;
- const BASE64_VARIANT_URLSAFE = 5;
- const BASE64_VARIANT_URLSAFE_NO_PADDING = 7;
- const CRYPTO_AEAD_AES256GCM_KEYBYTES = 32;
- const CRYPTO_AEAD_AES256GCM_NSECBYTES = 0;
- const CRYPTO_AEAD_AES256GCM_NPUBBYTES = 12;
- const CRYPTO_AEAD_AES256GCM_ABYTES = 16;
- const CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES = 32;
- const CRYPTO_AEAD_CHACHA20POLY1305_NSECBYTES = 0;
- const CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES = 8;
- const CRYPTO_AEAD_CHACHA20POLY1305_ABYTES = 16;
- const CRYPTO_AEAD_CHACHA20POLY1305_IETF_KEYBYTES = 32;
- const CRYPTO_AEAD_CHACHA20POLY1305_IETF_NSECBYTES = 0;
- const CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES = 12;
- const CRYPTO_AEAD_CHACHA20POLY1305_IETF_ABYTES = 16;
- const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES = 32;
- const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NSECBYTES = 0;
- const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES = 24;
- const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_ABYTES = 16;
- const CRYPTO_AUTH_BYTES = 32;
- const CRYPTO_AUTH_KEYBYTES = 32;
- const CRYPTO_BOX_SEALBYTES = 16;
- const CRYPTO_BOX_SECRETKEYBYTES = 32;
- const CRYPTO_BOX_PUBLICKEYBYTES = 32;
- const CRYPTO_BOX_KEYPAIRBYTES = 64;
- const CRYPTO_BOX_MACBYTES = 16;
- const CRYPTO_BOX_NONCEBYTES = 24;
- const CRYPTO_BOX_SEEDBYTES = 32;
- const CRYPTO_CORE_RISTRETTO255_BYTES = 32;
- const CRYPTO_CORE_RISTRETTO255_SCALARBYTES = 32;
- const CRYPTO_CORE_RISTRETTO255_HASHBYTES = 64;
- const CRYPTO_CORE_RISTRETTO255_NONREDUCEDSCALARBYTES = 64;
- const CRYPTO_KDF_BYTES_MIN = 16;
- const CRYPTO_KDF_BYTES_MAX = 64;
- const CRYPTO_KDF_CONTEXTBYTES = 8;
- const CRYPTO_KDF_KEYBYTES = 32;
- const CRYPTO_KX_BYTES = 32;
- const CRYPTO_KX_PRIMITIVE = 'x25519blake2b';
- const CRYPTO_KX_SEEDBYTES = 32;
- const CRYPTO_KX_KEYPAIRBYTES = 64;
- const CRYPTO_KX_PUBLICKEYBYTES = 32;
- const CRYPTO_KX_SECRETKEYBYTES = 32;
- const CRYPTO_KX_SESSIONKEYBYTES = 32;
- const CRYPTO_GENERICHASH_BYTES = 32;
- const CRYPTO_GENERICHASH_BYTES_MIN = 16;
- const CRYPTO_GENERICHASH_BYTES_MAX = 64;
- const CRYPTO_GENERICHASH_KEYBYTES = 32;
- const CRYPTO_GENERICHASH_KEYBYTES_MIN = 16;
- const CRYPTO_GENERICHASH_KEYBYTES_MAX = 64;
- const CRYPTO_PWHASH_SALTBYTES = 16;
- const CRYPTO_PWHASH_STRPREFIX = '$argon2id$';
- const CRYPTO_PWHASH_ALG_ARGON2I13 = 1;
- const CRYPTO_PWHASH_ALG_ARGON2ID13 = 2;
- const CRYPTO_PWHASH_MEMLIMIT_INTERACTIVE = 33554432;
- const CRYPTO_PWHASH_OPSLIMIT_INTERACTIVE = 4;
- const CRYPTO_PWHASH_MEMLIMIT_MODERATE = 134217728;
- const CRYPTO_PWHASH_OPSLIMIT_MODERATE = 6;
- const CRYPTO_PWHASH_MEMLIMIT_SENSITIVE = 536870912;
- const CRYPTO_PWHASH_OPSLIMIT_SENSITIVE = 8;
- const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_SALTBYTES = 32;
- const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_STRPREFIX = '$7$';
- const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_OPSLIMIT_INTERACTIVE = 534288;
- const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_MEMLIMIT_INTERACTIVE = 16777216;
- const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_OPSLIMIT_SENSITIVE = 33554432;
- const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_MEMLIMIT_SENSITIVE = 1073741824;
- const CRYPTO_SCALARMULT_BYTES = 32;
- const CRYPTO_SCALARMULT_SCALARBYTES = 32;
- const CRYPTO_SCALARMULT_RISTRETTO255_BYTES = 32;
- const CRYPTO_SCALARMULT_RISTRETTO255_SCALARBYTES = 32;
- const CRYPTO_SHORTHASH_BYTES = 8;
- const CRYPTO_SHORTHASH_KEYBYTES = 16;
- const CRYPTO_SECRETBOX_KEYBYTES = 32;
- const CRYPTO_SECRETBOX_MACBYTES = 16;
- const CRYPTO_SECRETBOX_NONCEBYTES = 24;
- const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_ABYTES = 17;
- const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES = 24;
- const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_KEYBYTES = 32;
- const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_PUSH = 0;
- const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_PULL = 1;
- const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_REKEY = 2;
- const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_FINAL = 3;
- const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_MESSAGEBYTES_MAX = 0x3fffffff80;
- const CRYPTO_SIGN_BYTES = 64;
- const CRYPTO_SIGN_SEEDBYTES = 32;
- const CRYPTO_SIGN_PUBLICKEYBYTES = 32;
- const CRYPTO_SIGN_SECRETKEYBYTES = 64;
- const CRYPTO_SIGN_KEYPAIRBYTES = 96;
- const CRYPTO_STREAM_KEYBYTES = 32;
- const CRYPTO_STREAM_NONCEBYTES = 24;
- const CRYPTO_STREAM_XCHACHA20_KEYBYTES = 32;
- const CRYPTO_STREAM_XCHACHA20_NONCEBYTES = 24;
-
- /**
- * Add two numbers (little-endian unsigned), storing the value in the first
- * parameter.
- *
- * This mutates $val.
- *
- * @param string $val
- * @param string $addv
- * @return void
- * @throws SodiumException
- */
- public static function add(&$val, $addv)
- {
- $val_len = ParagonIE_Sodium_Core_Util::strlen($val);
- $addv_len = ParagonIE_Sodium_Core_Util::strlen($addv);
- if ($val_len !== $addv_len) {
- throw new SodiumException('values must have the same length');
- }
- $A = ParagonIE_Sodium_Core_Util::stringToIntArray($val);
- $B = ParagonIE_Sodium_Core_Util::stringToIntArray($addv);
-
- $c = 0;
- for ($i = 0; $i < $val_len; $i++) {
- $c += ($A[$i] + $B[$i]);
- $A[$i] = ($c & 0xff);
- $c >>= 8;
- }
- $val = ParagonIE_Sodium_Core_Util::intArrayToString($A);
- }
-
- /**
- * @param string $encoded
- * @param int $variant
- * @param string $ignore
- * @return string
- * @throws SodiumException
- */
- public static function base642bin($encoded, $variant, $ignore = '')
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($encoded, 'string', 1);
-
- /** @var string $encoded */
- $encoded = (string) $encoded;
- if (ParagonIE_Sodium_Core_Util::strlen($encoded) === 0) {
- return '';
- }
-
- // Just strip before decoding
- if (!empty($ignore)) {
- $encoded = str_replace($ignore, '', $encoded);
- }
-
- try {
- switch ($variant) {
- case self::BASE64_VARIANT_ORIGINAL:
- return ParagonIE_Sodium_Core_Base64_Original::decode($encoded, true);
- case self::BASE64_VARIANT_ORIGINAL_NO_PADDING:
- return ParagonIE_Sodium_Core_Base64_Original::decode($encoded, false);
- case self::BASE64_VARIANT_URLSAFE:
- return ParagonIE_Sodium_Core_Base64_UrlSafe::decode($encoded, true);
- case self::BASE64_VARIANT_URLSAFE_NO_PADDING:
- return ParagonIE_Sodium_Core_Base64_UrlSafe::decode($encoded, false);
- default:
- throw new SodiumException('invalid base64 variant identifier');
- }
- } catch (Exception $ex) {
- if ($ex instanceof SodiumException) {
- throw $ex;
- }
- throw new SodiumException('invalid base64 string');
- }
- }
-
- /**
- * @param string $decoded
- * @param int $variant
- * @return string
- * @throws SodiumException
- */
- public static function bin2base64($decoded, $variant)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($decoded, 'string', 1);
- /** @var string $decoded */
- $decoded = (string) $decoded;
- if (ParagonIE_Sodium_Core_Util::strlen($decoded) === 0) {
- return '';
- }
-
- switch ($variant) {
- case self::BASE64_VARIANT_ORIGINAL:
- return ParagonIE_Sodium_Core_Base64_Original::encode($decoded);
- case self::BASE64_VARIANT_ORIGINAL_NO_PADDING:
- return ParagonIE_Sodium_Core_Base64_Original::encodeUnpadded($decoded);
- case self::BASE64_VARIANT_URLSAFE:
- return ParagonIE_Sodium_Core_Base64_UrlSafe::encode($decoded);
- case self::BASE64_VARIANT_URLSAFE_NO_PADDING:
- return ParagonIE_Sodium_Core_Base64_UrlSafe::encodeUnpadded($decoded);
- default:
- throw new SodiumException('invalid base64 variant identifier');
- }
- }
-
- /**
- * Cache-timing-safe implementation of bin2hex().
- *
- * @param string $string A string (probably raw binary)
- * @return string A hexadecimal-encoded string
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function bin2hex($string)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($string, 'string', 1);
-
- if (self::useNewSodiumAPI()) {
- return (string) sodium_bin2hex($string);
- }
- if (self::use_fallback('bin2hex')) {
- return (string) call_user_func('\\Sodium\\bin2hex', $string);
- }
- return ParagonIE_Sodium_Core_Util::bin2hex($string);
- }
-
- /**
- * Compare two strings, in constant-time.
- * Compared to memcmp(), compare() is more useful for sorting.
- *
- * @param string $left The left operand; must be a string
- * @param string $right The right operand; must be a string
- * @return int If < 0 if the left operand is less than the right
- * If = 0 if both strings are equal
- * If > 0 if the right operand is less than the left
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function compare($left, $right)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($left, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($right, 'string', 2);
-
- if (self::useNewSodiumAPI()) {
- return (int) sodium_compare($left, $right);
- }
- if (self::use_fallback('compare')) {
- return (int) call_user_func('\\Sodium\\compare', $left, $right);
- }
- return ParagonIE_Sodium_Core_Util::compare($left, $right);
- }
-
- /**
- * Is AES-256-GCM even available to use?
- *
- * @return bool
- * @psalm-suppress UndefinedFunction
- * @psalm-suppress MixedInferredReturnType
- * @psalm-suppress MixedReturnStatement
- */
- public static function crypto_aead_aes256gcm_is_available()
- {
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_aead_aes256gcm_is_available();
- }
- if (self::use_fallback('crypto_aead_aes256gcm_is_available')) {
- return call_user_func('\\Sodium\\crypto_aead_aes256gcm_is_available');
- }
- if (PHP_VERSION_ID < 70100) {
- // OpenSSL doesn't support AEAD before 7.1.0
- return false;
- }
- if (!is_callable('openssl_encrypt') || !is_callable('openssl_decrypt')) {
- // OpenSSL isn't installed
- return false;
- }
- return (bool) in_array('aes-256-gcm', openssl_get_cipher_methods());
- }
-
- /**
- * Authenticated Encryption with Associated Data: Decryption
- *
- * Algorithm:
- * AES-256-GCM
- *
- * This mode uses a 64-bit random nonce with a 64-bit counter.
- * IETF mode uses a 96-bit random nonce with a 32-bit counter.
- *
- * @param string $ciphertext Encrypted message (with Poly1305 MAC appended)
- * @param string $assocData Authenticated Associated Data (unencrypted)
- * @param string $nonce Number to be used only Once; must be 8 bytes
- * @param string $key Encryption key
- *
- * @return string|bool The original plaintext message
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedInferredReturnType
- * @psalm-suppress MixedReturnStatement
- */
- public static function crypto_aead_aes256gcm_decrypt(
- $ciphertext = '',
- $assocData = '',
- $nonce = '',
- $key = ''
- ) {
- if (!self::crypto_aead_aes256gcm_is_available()) {
- throw new SodiumException('AES-256-GCM is not available');
- }
- ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_AES256GCM_NPUBBYTES) {
- throw new SodiumException('Nonce must be CRYPTO_AEAD_AES256GCM_NPUBBYTES long');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_AES256GCM_KEYBYTES) {
- throw new SodiumException('Key must be CRYPTO_AEAD_AES256GCM_KEYBYTES long');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_AES256GCM_ABYTES) {
- throw new SodiumException('Message must be at least CRYPTO_AEAD_AES256GCM_ABYTES long');
- }
- if (!is_callable('openssl_decrypt')) {
- throw new SodiumException('The OpenSSL extension is not installed, or openssl_decrypt() is not available');
- }
-
- /** @var string $ctext */
- $ctext = ParagonIE_Sodium_Core_Util::substr($ciphertext, 0, -self::CRYPTO_AEAD_AES256GCM_ABYTES);
- /** @var string $authTag */
- $authTag = ParagonIE_Sodium_Core_Util::substr($ciphertext, -self::CRYPTO_AEAD_AES256GCM_ABYTES, 16);
- return openssl_decrypt(
- $ctext,
- 'aes-256-gcm',
- $key,
- OPENSSL_RAW_DATA,
- $nonce,
- $authTag,
- $assocData
- );
- }
-
- /**
- * Authenticated Encryption with Associated Data: Encryption
- *
- * Algorithm:
- * AES-256-GCM
- *
- * @param string $plaintext Message to be encrypted
- * @param string $assocData Authenticated Associated Data (unencrypted)
- * @param string $nonce Number to be used only Once; must be 8 bytes
- * @param string $key Encryption key
- *
- * @return string Ciphertext with a 16-byte GCM message
- * authentication code appended
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_aead_aes256gcm_encrypt(
- $plaintext = '',
- $assocData = '',
- $nonce = '',
- $key = ''
- ) {
- if (!self::crypto_aead_aes256gcm_is_available()) {
- throw new SodiumException('AES-256-GCM is not available');
- }
- ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_AES256GCM_NPUBBYTES) {
- throw new SodiumException('Nonce must be CRYPTO_AEAD_AES256GCM_NPUBBYTES long');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_AES256GCM_KEYBYTES) {
- throw new SodiumException('Key must be CRYPTO_AEAD_AES256GCM_KEYBYTES long');
- }
-
- if (!is_callable('openssl_encrypt')) {
- throw new SodiumException('The OpenSSL extension is not installed, or openssl_encrypt() is not available');
- }
-
- $authTag = '';
- $ciphertext = openssl_encrypt(
- $plaintext,
- 'aes-256-gcm',
- $key,
- OPENSSL_RAW_DATA,
- $nonce,
- $authTag,
- $assocData
- );
- return $ciphertext . $authTag;
- }
-
- /**
- * Return a secure random key for use with the AES-256-GCM
- * symmetric AEAD interface.
- *
- * @return string
- * @throws Exception
- * @throws Error
- */
- public static function crypto_aead_aes256gcm_keygen()
- {
- return random_bytes(self::CRYPTO_AEAD_AES256GCM_KEYBYTES);
- }
-
- /**
- * Authenticated Encryption with Associated Data: Decryption
- *
- * Algorithm:
- * ChaCha20-Poly1305
- *
- * This mode uses a 64-bit random nonce with a 64-bit counter.
- * IETF mode uses a 96-bit random nonce with a 32-bit counter.
- *
- * @param string $ciphertext Encrypted message (with Poly1305 MAC appended)
- * @param string $assocData Authenticated Associated Data (unencrypted)
- * @param string $nonce Number to be used only Once; must be 8 bytes
- * @param string $key Encryption key
- *
- * @return string The original plaintext message
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedInferredReturnType
- * @psalm-suppress MixedReturnStatement
- */
- public static function crypto_aead_chacha20poly1305_decrypt(
- $ciphertext = '',
- $assocData = '',
- $nonce = '',
- $key = ''
- ) {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES) {
- throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES long');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) {
- throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_CHACHA20POLY1305_ABYTES) {
- throw new SodiumException('Message must be at least CRYPTO_AEAD_CHACHA20POLY1305_ABYTES long');
- }
-
- if (self::useNewSodiumAPI()) {
- /**
- * @psalm-suppress InvalidReturnStatement
- * @psalm-suppress FalsableReturnStatement
- */
- return sodium_crypto_aead_chacha20poly1305_decrypt(
- $ciphertext,
- $assocData,
- $nonce,
- $key
- );
- }
- if (self::use_fallback('crypto_aead_chacha20poly1305_decrypt')) {
- return call_user_func(
- '\\Sodium\\crypto_aead_chacha20poly1305_decrypt',
- $ciphertext,
- $assocData,
- $nonce,
- $key
- );
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_decrypt(
- $ciphertext,
- $assocData,
- $nonce,
- $key
- );
- }
- return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_decrypt(
- $ciphertext,
- $assocData,
- $nonce,
- $key
- );
- }
-
- /**
- * Authenticated Encryption with Associated Data
- *
- * Algorithm:
- * ChaCha20-Poly1305
- *
- * This mode uses a 64-bit random nonce with a 64-bit counter.
- * IETF mode uses a 96-bit random nonce with a 32-bit counter.
- *
- * @param string $plaintext Message to be encrypted
- * @param string $assocData Authenticated Associated Data (unencrypted)
- * @param string $nonce Number to be used only Once; must be 8 bytes
- * @param string $key Encryption key
- *
- * @return string Ciphertext with a 16-byte Poly1305 message
- * authentication code appended
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_aead_chacha20poly1305_encrypt(
- $plaintext = '',
- $assocData = '',
- $nonce = '',
- $key = ''
- ) {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES) {
- throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES long');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) {
- throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long');
- }
-
- if (self::useNewSodiumAPI()) {
- return (string) sodium_crypto_aead_chacha20poly1305_encrypt(
- $plaintext,
- $assocData,
- $nonce,
- $key
- );
- }
- if (self::use_fallback('crypto_aead_chacha20poly1305_encrypt')) {
- return (string) call_user_func(
- '\\Sodium\\crypto_aead_chacha20poly1305_encrypt',
- $plaintext,
- $assocData,
- $nonce,
- $key
- );
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_encrypt(
- $plaintext,
- $assocData,
- $nonce,
- $key
- );
- }
- return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_encrypt(
- $plaintext,
- $assocData,
- $nonce,
- $key
- );
- }
-
- /**
- * Authenticated Encryption with Associated Data: Decryption
- *
- * Algorithm:
- * ChaCha20-Poly1305
- *
- * IETF mode uses a 96-bit random nonce with a 32-bit counter.
- * Regular mode uses a 64-bit random nonce with a 64-bit counter.
- *
- * @param string $ciphertext Encrypted message (with Poly1305 MAC appended)
- * @param string $assocData Authenticated Associated Data (unencrypted)
- * @param string $nonce Number to be used only Once; must be 12 bytes
- * @param string $key Encryption key
- *
- * @return string The original plaintext message
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedInferredReturnType
- * @psalm-suppress MixedReturnStatement
- */
- public static function crypto_aead_chacha20poly1305_ietf_decrypt(
- $ciphertext = '',
- $assocData = '',
- $nonce = '',
- $key = ''
- ) {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES) {
- throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES long');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) {
- throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_CHACHA20POLY1305_ABYTES) {
- throw new SodiumException('Message must be at least CRYPTO_AEAD_CHACHA20POLY1305_ABYTES long');
- }
-
- if (self::useNewSodiumAPI()) {
- /**
- * @psalm-suppress InvalidReturnStatement
- * @psalm-suppress FalsableReturnStatement
- */
- return sodium_crypto_aead_chacha20poly1305_ietf_decrypt(
- $ciphertext,
- $assocData,
- $nonce,
- $key
- );
- }
- if (self::use_fallback('crypto_aead_chacha20poly1305_ietf_decrypt')) {
- return call_user_func(
- '\\Sodium\\crypto_aead_chacha20poly1305_ietf_decrypt',
- $ciphertext,
- $assocData,
- $nonce,
- $key
- );
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_ietf_decrypt(
- $ciphertext,
- $assocData,
- $nonce,
- $key
- );
- }
- return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_ietf_decrypt(
- $ciphertext,
- $assocData,
- $nonce,
- $key
- );
- }
-
- /**
- * Return a secure random key for use with the ChaCha20-Poly1305
- * symmetric AEAD interface.
- *
- * @return string
- * @throws Exception
- * @throws Error
- */
- public static function crypto_aead_chacha20poly1305_keygen()
- {
- return random_bytes(self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES);
- }
-
- /**
- * Authenticated Encryption with Associated Data
- *
- * Algorithm:
- * ChaCha20-Poly1305
- *
- * IETF mode uses a 96-bit random nonce with a 32-bit counter.
- * Regular mode uses a 64-bit random nonce with a 64-bit counter.
- *
- * @param string $plaintext Message to be encrypted
- * @param string $assocData Authenticated Associated Data (unencrypted)
- * @param string $nonce Number to be used only Once; must be 8 bytes
- * @param string $key Encryption key
- *
- * @return string Ciphertext with a 16-byte Poly1305 message
- * authentication code appended
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_aead_chacha20poly1305_ietf_encrypt(
- $plaintext = '',
- $assocData = '',
- $nonce = '',
- $key = ''
- ) {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
- if (!is_null($assocData)) {
- ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
- }
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES) {
- throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES long');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) {
- throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long');
- }
-
- if (self::useNewSodiumAPI()) {
- return (string) sodium_crypto_aead_chacha20poly1305_ietf_encrypt(
- $plaintext,
- $assocData,
- $nonce,
- $key
- );
- }
- if (self::use_fallback('crypto_aead_chacha20poly1305_ietf_encrypt')) {
- return (string) call_user_func(
- '\\Sodium\\crypto_aead_chacha20poly1305_ietf_encrypt',
- $plaintext,
- $assocData,
- $nonce,
- $key
- );
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_ietf_encrypt(
- $plaintext,
- $assocData,
- $nonce,
- $key
- );
- }
- return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_ietf_encrypt(
- $plaintext,
- $assocData,
- $nonce,
- $key
- );
- }
-
- /**
- * Return a secure random key for use with the ChaCha20-Poly1305
- * symmetric AEAD interface. (IETF version)
- *
- * @return string
- * @throws Exception
- * @throws Error
- */
- public static function crypto_aead_chacha20poly1305_ietf_keygen()
- {
- return random_bytes(self::CRYPTO_AEAD_CHACHA20POLY1305_IETF_KEYBYTES);
- }
-
- /**
- * Authenticated Encryption with Associated Data: Decryption
- *
- * Algorithm:
- * XChaCha20-Poly1305
- *
- * This mode uses a 64-bit random nonce with a 64-bit counter.
- * IETF mode uses a 96-bit random nonce with a 32-bit counter.
- *
- * @param string $ciphertext Encrypted message (with Poly1305 MAC appended)
- * @param string $assocData Authenticated Associated Data (unencrypted)
- * @param string $nonce Number to be used only Once; must be 8 bytes
- * @param string $key Encryption key
- * @param bool $dontFallback Don't fallback to ext/sodium
- *
- * @return string|bool The original plaintext message
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_aead_xchacha20poly1305_ietf_decrypt(
- $ciphertext = '',
- $assocData = '',
- $nonce = '',
- $key = '',
- $dontFallback = false
- ) {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
- if (!is_null($assocData)) {
- ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
- } else {
- $assocData = '';
- }
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES) {
- throw new SodiumException('Nonce must be CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES long');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES) {
- throw new SodiumException('Key must be CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES long');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_ABYTES) {
- throw new SodiumException('Message must be at least CRYPTO_AEAD_XCHACHA20POLY1305_IETF_ABYTES long');
- }
- if (self::useNewSodiumAPI() && !$dontFallback) {
- if (is_callable('sodium_crypto_aead_xchacha20poly1305_ietf_decrypt')) {
- return sodium_crypto_aead_xchacha20poly1305_ietf_decrypt(
- $ciphertext,
- $assocData,
- $nonce,
- $key
- );
- }
- }
-
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::aead_xchacha20poly1305_ietf_decrypt(
- $ciphertext,
- $assocData,
- $nonce,
- $key
- );
- }
- return ParagonIE_Sodium_Crypto::aead_xchacha20poly1305_ietf_decrypt(
- $ciphertext,
- $assocData,
- $nonce,
- $key
- );
- }
-
- /**
- * Authenticated Encryption with Associated Data
- *
- * Algorithm:
- * XChaCha20-Poly1305
- *
- * This mode uses a 64-bit random nonce with a 64-bit counter.
- * IETF mode uses a 96-bit random nonce with a 32-bit counter.
- *
- * @param string $plaintext Message to be encrypted
- * @param string $assocData Authenticated Associated Data (unencrypted)
- * @param string $nonce Number to be used only Once; must be 8 bytes
- * @param string $key Encryption key
- * @param bool $dontFallback Don't fallback to ext/sodium
- *
- * @return string Ciphertext with a 16-byte Poly1305 message
- * authentication code appended
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_aead_xchacha20poly1305_ietf_encrypt(
- $plaintext = '',
- $assocData = '',
- $nonce = '',
- $key = '',
- $dontFallback = false
- ) {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
- if (!is_null($assocData)) {
- ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
- } else {
- $assocData = '';
- }
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES) {
- throw new SodiumException('Nonce must be CRYPTO_AEAD_XCHACHA20POLY1305_NPUBBYTES long');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES) {
- throw new SodiumException('Key must be CRYPTO_AEAD_XCHACHA20POLY1305_KEYBYTES long');
- }
- if (self::useNewSodiumAPI() && !$dontFallback) {
- if (is_callable('sodium_crypto_aead_xchacha20poly1305_ietf_encrypt')) {
- return sodium_crypto_aead_xchacha20poly1305_ietf_encrypt(
- $plaintext,
- $assocData,
- $nonce,
- $key
- );
- }
- }
-
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::aead_xchacha20poly1305_ietf_encrypt(
- $plaintext,
- $assocData,
- $nonce,
- $key
- );
- }
- return ParagonIE_Sodium_Crypto::aead_xchacha20poly1305_ietf_encrypt(
- $plaintext,
- $assocData,
- $nonce,
- $key
- );
- }
-
- /**
- * Return a secure random key for use with the XChaCha20-Poly1305
- * symmetric AEAD interface.
- *
- * @return string
- * @throws Exception
- * @throws Error
- */
- public static function crypto_aead_xchacha20poly1305_ietf_keygen()
- {
- return random_bytes(self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES);
- }
-
- /**
- * Authenticate a message. Uses symmetric-key cryptography.
- *
- * Algorithm:
- * HMAC-SHA512-256. Which is HMAC-SHA-512 truncated to 256 bits.
- * Not to be confused with HMAC-SHA-512/256 which would use the
- * SHA-512/256 hash function (uses different initial parameters
- * but still truncates to 256 bits to sidestep length-extension
- * attacks).
- *
- * @param string $message Message to be authenticated
- * @param string $key Symmetric authentication key
- * @return string Message authentication code
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_auth($message, $key)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 2);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AUTH_KEYBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_AUTH_KEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return (string) sodium_crypto_auth($message, $key);
- }
- if (self::use_fallback('crypto_auth')) {
- return (string) call_user_func('\\Sodium\\crypto_auth', $message, $key);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::auth($message, $key);
- }
- return ParagonIE_Sodium_Crypto::auth($message, $key);
- }
-
- /**
- * @return string
- * @throws Exception
- * @throws Error
- */
- public static function crypto_auth_keygen()
- {
- return random_bytes(self::CRYPTO_AUTH_KEYBYTES);
- }
-
- /**
- * Verify the MAC of a message previously authenticated with crypto_auth.
- *
- * @param string $mac Message authentication code
- * @param string $message Message whose authenticity you are attempting to
- * verify (with a given MAC and key)
- * @param string $key Symmetric authentication key
- * @return bool TRUE if authenticated, FALSE otherwise
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_auth_verify($mac, $message, $key)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($mac, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($mac) !== self::CRYPTO_AUTH_BYTES) {
- throw new SodiumException('Argument 1 must be CRYPTO_AUTH_BYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AUTH_KEYBYTES) {
- throw new SodiumException('Argument 3 must be CRYPTO_AUTH_KEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return (bool) sodium_crypto_auth_verify($mac, $message, $key);
- }
- if (self::use_fallback('crypto_auth_verify')) {
- return (bool) call_user_func('\\Sodium\\crypto_auth_verify', $mac, $message, $key);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::auth_verify($mac, $message, $key);
- }
- return ParagonIE_Sodium_Crypto::auth_verify($mac, $message, $key);
- }
-
- /**
- * Authenticated asymmetric-key encryption. Both the sender and recipient
- * may decrypt messages.
- *
- * Algorithm: X25519-XSalsa20-Poly1305.
- * X25519: Elliptic-Curve Diffie Hellman over Curve25519.
- * XSalsa20: Extended-nonce variant of salsa20.
- * Poyl1305: Polynomial MAC for one-time message authentication.
- *
- * @param string $plaintext The message to be encrypted
- * @param string $nonce A Number to only be used Once; must be 24 bytes
- * @param string $keypair Your secret key and your recipient's public key
- * @return string Ciphertext with 16-byte Poly1305 MAC
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_box($plaintext, $nonce, $keypair)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 3);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_BOX_NONCEBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_BOX_NONCEBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
- throw new SodiumException('Argument 3 must be CRYPTO_BOX_KEYPAIRBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return (string) sodium_crypto_box($plaintext, $nonce, $keypair);
- }
- if (self::use_fallback('crypto_box')) {
- return (string) call_user_func('\\Sodium\\crypto_box', $plaintext, $nonce, $keypair);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::box($plaintext, $nonce, $keypair);
- }
- return ParagonIE_Sodium_Crypto::box($plaintext, $nonce, $keypair);
- }
-
- /**
- * Anonymous public-key encryption. Only the recipient may decrypt messages.
- *
- * Algorithm: X25519-XSalsa20-Poly1305, as with crypto_box.
- * The sender's X25519 keypair is ephemeral.
- * Nonce is generated from the BLAKE2b hash of both public keys.
- *
- * This provides ciphertext integrity.
- *
- * @param string $plaintext Message to be sealed
- * @param string $publicKey Your recipient's public key
- * @return string Sealed message that only your recipient can
- * decrypt
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_box_seal($plaintext, $publicKey)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return (string) sodium_crypto_box_seal($plaintext, $publicKey);
- }
- if (self::use_fallback('crypto_box_seal')) {
- return (string) call_user_func('\\Sodium\\crypto_box_seal', $plaintext, $publicKey);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::box_seal($plaintext, $publicKey);
- }
- return ParagonIE_Sodium_Crypto::box_seal($plaintext, $publicKey);
- }
-
- /**
- * Opens a message encrypted with crypto_box_seal(). Requires
- * the recipient's keypair (sk || pk) to decrypt successfully.
- *
- * This validates ciphertext integrity.
- *
- * @param string $ciphertext Sealed message to be opened
- * @param string $keypair Your crypto_box keypair
- * @return string The original plaintext message
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedInferredReturnType
- * @psalm-suppress MixedReturnStatement
- */
- public static function crypto_box_seal_open($ciphertext, $keypair)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 2);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_BOX_KEYPAIRBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- /**
- * @psalm-suppress InvalidReturnStatement
- * @psalm-suppress FalsableReturnStatement
- */
- return sodium_crypto_box_seal_open($ciphertext, $keypair);
- }
- if (self::use_fallback('crypto_box_seal_open')) {
- return call_user_func('\\Sodium\\crypto_box_seal_open', $ciphertext, $keypair);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::box_seal_open($ciphertext, $keypair);
- }
- return ParagonIE_Sodium_Crypto::box_seal_open($ciphertext, $keypair);
- }
-
- /**
- * Generate a new random X25519 keypair.
- *
- * @return string A 64-byte string; the first 32 are your secret key, while
- * the last 32 are your public key. crypto_box_secretkey()
- * and crypto_box_publickey() exist to separate them so you
- * don't accidentally get them mixed up!
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_box_keypair()
- {
- if (self::useNewSodiumAPI()) {
- return (string) sodium_crypto_box_keypair();
- }
- if (self::use_fallback('crypto_box_keypair')) {
- return (string) call_user_func('\\Sodium\\crypto_box_keypair');
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::box_keypair();
- }
- return ParagonIE_Sodium_Crypto::box_keypair();
- }
-
- /**
- * Combine two keys into a keypair for use in library methods that expect
- * a keypair. This doesn't necessarily have to be the same person's keys.
- *
- * @param string $secretKey Secret key
- * @param string $publicKey Public key
- * @return string Keypair
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_box_keypair_from_secretkey_and_publickey($secretKey, $publicKey)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
- throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return (string) sodium_crypto_box_keypair_from_secretkey_and_publickey($secretKey, $publicKey);
- }
- if (self::use_fallback('crypto_box_keypair_from_secretkey_and_publickey')) {
- return (string) call_user_func('\\Sodium\\crypto_box_keypair_from_secretkey_and_publickey', $secretKey, $publicKey);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::box_keypair_from_secretkey_and_publickey($secretKey, $publicKey);
- }
- return ParagonIE_Sodium_Crypto::box_keypair_from_secretkey_and_publickey($secretKey, $publicKey);
- }
-
- /**
- * Decrypt a message previously encrypted with crypto_box().
- *
- * @param string $ciphertext Encrypted message
- * @param string $nonce Number to only be used Once; must be 24 bytes
- * @param string $keypair Your secret key and the sender's public key
- * @return string The original plaintext message
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedInferredReturnType
- * @psalm-suppress MixedReturnStatement
- */
- public static function crypto_box_open($ciphertext, $nonce, $keypair)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 3);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_BOX_MACBYTES) {
- throw new SodiumException('Argument 1 must be at least CRYPTO_BOX_MACBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_BOX_NONCEBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_BOX_NONCEBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
- throw new SodiumException('Argument 3 must be CRYPTO_BOX_KEYPAIRBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- /**
- * @psalm-suppress InvalidReturnStatement
- * @psalm-suppress FalsableReturnStatement
- */
- return sodium_crypto_box_open($ciphertext, $nonce, $keypair);
- }
- if (self::use_fallback('crypto_box_open')) {
- return call_user_func('\\Sodium\\crypto_box_open', $ciphertext, $nonce, $keypair);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::box_open($ciphertext, $nonce, $keypair);
- }
- return ParagonIE_Sodium_Crypto::box_open($ciphertext, $nonce, $keypair);
- }
-
- /**
- * Extract the public key from a crypto_box keypair.
- *
- * @param string $keypair Keypair containing secret and public key
- * @return string Your crypto_box public key
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_box_publickey($keypair)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
- throw new SodiumException('Argument 1 must be CRYPTO_BOX_KEYPAIRBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return (string) sodium_crypto_box_publickey($keypair);
- }
- if (self::use_fallback('crypto_box_publickey')) {
- return (string) call_user_func('\\Sodium\\crypto_box_publickey', $keypair);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::box_publickey($keypair);
- }
- return ParagonIE_Sodium_Crypto::box_publickey($keypair);
- }
-
- /**
- * Calculate the X25519 public key from a given X25519 secret key.
- *
- * @param string $secretKey Any X25519 secret key
- * @return string The corresponding X25519 public key
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_box_publickey_from_secretkey($secretKey)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
- throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return (string) sodium_crypto_box_publickey_from_secretkey($secretKey);
- }
- if (self::use_fallback('crypto_box_publickey_from_secretkey')) {
- return (string) call_user_func('\\Sodium\\crypto_box_publickey_from_secretkey', $secretKey);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::box_publickey_from_secretkey($secretKey);
- }
- return ParagonIE_Sodium_Crypto::box_publickey_from_secretkey($secretKey);
- }
-
- /**
- * Extract the secret key from a crypto_box keypair.
- *
- * @param string $keypair
- * @return string Your crypto_box secret key
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_box_secretkey($keypair)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
- throw new SodiumException('Argument 1 must be CRYPTO_BOX_KEYPAIRBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return (string) sodium_crypto_box_secretkey($keypair);
- }
- if (self::use_fallback('crypto_box_secretkey')) {
- return (string) call_user_func('\\Sodium\\crypto_box_secretkey', $keypair);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::box_secretkey($keypair);
- }
- return ParagonIE_Sodium_Crypto::box_secretkey($keypair);
- }
-
- /**
- * Generate an X25519 keypair from a seed.
- *
- * @param string $seed
- * @return string
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress UndefinedFunction
- */
- public static function crypto_box_seed_keypair($seed)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($seed, 'string', 1);
-
- if (self::useNewSodiumAPI()) {
- return (string) sodium_crypto_box_seed_keypair($seed);
- }
- if (self::use_fallback('crypto_box_seed_keypair')) {
- return (string) call_user_func('\\Sodium\\crypto_box_seed_keypair', $seed);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::box_seed_keypair($seed);
- }
- return ParagonIE_Sodium_Crypto::box_seed_keypair($seed);
- }
-
- /**
- * Calculates a BLAKE2b hash, with an optional key.
- *
- * @param string $message The message to be hashed
- * @param string|null $key If specified, must be a string between 16
- * and 64 bytes long
- * @param int $length Output length in bytes; must be between 16
- * and 64 (default = 32)
- * @return string Raw binary
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_generichash($message, $key = '', $length = self::CRYPTO_GENERICHASH_BYTES)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
- if (is_null($key)) {
- $key = '';
- }
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 3);
-
- /* Input validation: */
- if (!empty($key)) {
- if (ParagonIE_Sodium_Core_Util::strlen($key) < self::CRYPTO_GENERICHASH_KEYBYTES_MIN) {
- throw new SodiumException('Unsupported key size. Must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) > self::CRYPTO_GENERICHASH_KEYBYTES_MAX) {
- throw new SodiumException('Unsupported key size. Must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes long.');
- }
- }
-
- if (self::useNewSodiumAPI()) {
- return (string) sodium_crypto_generichash($message, $key, $length);
- }
- if (self::use_fallback('crypto_generichash')) {
- return (string) call_user_func('\\Sodium\\crypto_generichash', $message, $key, $length);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::generichash($message, $key, $length);
- }
- return ParagonIE_Sodium_Crypto::generichash($message, $key, $length);
- }
-
- /**
- * Get the final BLAKE2b hash output for a given context.
- *
- * @param string $ctx BLAKE2 hashing context. Generated by crypto_generichash_init().
- * @param int $length Hash output size.
- * @return string Final BLAKE2b hash.
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress ReferenceConstraintViolation
- * @psalm-suppress ConflictingReferenceConstraint
- */
- public static function crypto_generichash_final(&$ctx, $length = self::CRYPTO_GENERICHASH_BYTES)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($ctx, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 2);
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_generichash_final($ctx, $length);
- }
- if (self::use_fallback('crypto_generichash_final')) {
- $func = '\\Sodium\\crypto_generichash_final';
- return (string) $func($ctx, $length);
- }
- if ($length < 1) {
- try {
- self::memzero($ctx);
- } catch (SodiumException $ex) {
- unset($ctx);
- }
- return '';
- }
- if (PHP_INT_SIZE === 4) {
- $result = ParagonIE_Sodium_Crypto32::generichash_final($ctx, $length);
- } else {
- $result = ParagonIE_Sodium_Crypto::generichash_final($ctx, $length);
- }
- try {
- self::memzero($ctx);
- } catch (SodiumException $ex) {
- unset($ctx);
- }
- return $result;
- }
-
- /**
- * Initialize a BLAKE2b hashing context, for use in a streaming interface.
- *
- * @param string|null $key If specified must be a string between 16 and 64 bytes
- * @param int $length The size of the desired hash output
- * @return string A BLAKE2 hashing context, encoded as a string
- * (To be 100% compatible with ext/libsodium)
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_generichash_init($key = '', $length = self::CRYPTO_GENERICHASH_BYTES)
- {
- /* Type checks: */
- if (is_null($key)) {
- $key = '';
- }
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 2);
-
- /* Input validation: */
- if (!empty($key)) {
- if (ParagonIE_Sodium_Core_Util::strlen($key) < self::CRYPTO_GENERICHASH_KEYBYTES_MIN) {
- throw new SodiumException('Unsupported key size. Must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) > self::CRYPTO_GENERICHASH_KEYBYTES_MAX) {
- throw new SodiumException('Unsupported key size. Must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes long.');
- }
- }
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_generichash_init($key, $length);
- }
- if (self::use_fallback('crypto_generichash_init')) {
- return (string) call_user_func('\\Sodium\\crypto_generichash_init', $key, $length);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::generichash_init($key, $length);
- }
- return ParagonIE_Sodium_Crypto::generichash_init($key, $length);
- }
-
- /**
- * Initialize a BLAKE2b hashing context, for use in a streaming interface.
- *
- * @param string|null $key If specified must be a string between 16 and 64 bytes
- * @param int $length The size of the desired hash output
- * @param string $salt Salt (up to 16 bytes)
- * @param string $personal Personalization string (up to 16 bytes)
- * @return string A BLAKE2 hashing context, encoded as a string
- * (To be 100% compatible with ext/libsodium)
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_generichash_init_salt_personal(
- $key = '',
- $length = self::CRYPTO_GENERICHASH_BYTES,
- $salt = '',
- $personal = ''
- ) {
- /* Type checks: */
- if (is_null($key)) {
- $key = '';
- }
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($salt, 'string', 3);
- ParagonIE_Sodium_Core_Util::declareScalarType($personal, 'string', 4);
- $salt = str_pad($salt, 16, "\0", STR_PAD_RIGHT);
- $personal = str_pad($personal, 16, "\0", STR_PAD_RIGHT);
-
- /* Input validation: */
- if (!empty($key)) {
- /*
- if (ParagonIE_Sodium_Core_Util::strlen($key) < self::CRYPTO_GENERICHASH_KEYBYTES_MIN) {
- throw new SodiumException('Unsupported key size. Must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes long.');
- }
- */
- if (ParagonIE_Sodium_Core_Util::strlen($key) > self::CRYPTO_GENERICHASH_KEYBYTES_MAX) {
- throw new SodiumException('Unsupported key size. Must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes long.');
- }
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::generichash_init_salt_personal($key, $length, $salt, $personal);
- }
- return ParagonIE_Sodium_Crypto::generichash_init_salt_personal($key, $length, $salt, $personal);
- }
-
- /**
- * Update a BLAKE2b hashing context with additional data.
- *
- * @param string $ctx BLAKE2 hashing context. Generated by crypto_generichash_init().
- * $ctx is passed by reference and gets updated in-place.
- * @param-out string $ctx
- * @param string $message The message to append to the existing hash state.
- * @return void
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress ReferenceConstraintViolation
- */
- public static function crypto_generichash_update(&$ctx, $message)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($ctx, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 2);
-
- if (self::useNewSodiumAPI()) {
- sodium_crypto_generichash_update($ctx, $message);
- return;
- }
- if (self::use_fallback('crypto_generichash_update')) {
- $func = '\\Sodium\\crypto_generichash_update';
- $func($ctx, $message);
- return;
- }
- if (PHP_INT_SIZE === 4) {
- $ctx = ParagonIE_Sodium_Crypto32::generichash_update($ctx, $message);
- } else {
- $ctx = ParagonIE_Sodium_Crypto::generichash_update($ctx, $message);
- }
- }
-
- /**
- * @return string
- * @throws Exception
- * @throws Error
- */
- public static function crypto_generichash_keygen()
- {
- return random_bytes(self::CRYPTO_GENERICHASH_KEYBYTES);
- }
-
- /**
- * @param int $subkey_len
- * @param int $subkey_id
- * @param string $context
- * @param string $key
- * @return string
- * @throws SodiumException
- */
- public static function crypto_kdf_derive_from_key(
- $subkey_len,
- $subkey_id,
- $context,
- $key
- ) {
- ParagonIE_Sodium_Core_Util::declareScalarType($subkey_len, 'int', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($subkey_id, 'int', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($context, 'string', 3);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
- $subkey_id = (int) $subkey_id;
- $subkey_len = (int) $subkey_len;
- $context = (string) $context;
- $key = (string) $key;
-
- if ($subkey_len < self::CRYPTO_KDF_BYTES_MIN) {
- throw new SodiumException('subkey cannot be smaller than SODIUM_CRYPTO_KDF_BYTES_MIN');
- }
- if ($subkey_len > self::CRYPTO_KDF_BYTES_MAX) {
- throw new SodiumException('subkey cannot be larger than SODIUM_CRYPTO_KDF_BYTES_MAX');
- }
- if ($subkey_id < 0) {
- throw new SodiumException('subkey_id cannot be negative');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($context) !== self::CRYPTO_KDF_CONTEXTBYTES) {
- throw new SodiumException('context should be SODIUM_CRYPTO_KDF_CONTEXTBYTES bytes');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_KDF_KEYBYTES) {
- throw new SodiumException('key should be SODIUM_CRYPTO_KDF_KEYBYTES bytes');
- }
-
- $salt = ParagonIE_Sodium_Core_Util::store64_le($subkey_id);
- $state = self::crypto_generichash_init_salt_personal(
- $key,
- $subkey_len,
- $salt,
- $context
- );
- return self::crypto_generichash_final($state, $subkey_len);
- }
-
- /**
- * @return string
- * @throws Exception
- * @throws Error
- */
- public static function crypto_kdf_keygen()
- {
- return random_bytes(self::CRYPTO_KDF_KEYBYTES);
- }
-
- /**
- * Perform a key exchange, between a designated client and a server.
- *
- * Typically, you would designate one machine to be the client and the
- * other to be the server. The first two keys are what you'd expect for
- * scalarmult() below, but the latter two public keys don't swap places.
- *
- * | ALICE | BOB |
- * | Client | Server |
- * |--------------------------------|-------------------------------------|
- * | shared = crypto_kx( | shared = crypto_kx( |
- * | alice_sk, | bob_sk, | <- contextual
- * | bob_pk, | alice_pk, | <- contextual
- * | alice_pk, | alice_pk, | <----- static
- * | bob_pk | bob_pk | <----- static
- * | ) | ) |
- *
- * They are used along with the scalarmult product to generate a 256-bit
- * BLAKE2b hash unique to the client and server keys.
- *
- * @param string $my_secret
- * @param string $their_public
- * @param string $client_public
- * @param string $server_public
- * @param bool $dontFallback
- * @return string
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_kx($my_secret, $their_public, $client_public, $server_public, $dontFallback = false)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($my_secret, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($their_public, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($client_public, 'string', 3);
- ParagonIE_Sodium_Core_Util::declareScalarType($server_public, 'string', 4);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($my_secret) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
- throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($their_public) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($client_public) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
- throw new SodiumException('Argument 3 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($server_public) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
- throw new SodiumException('Argument 4 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI() && !$dontFallback) {
- if (is_callable('sodium_crypto_kx')) {
- return (string) sodium_crypto_kx(
- $my_secret,
- $their_public,
- $client_public,
- $server_public
- );
- }
- }
- if (self::use_fallback('crypto_kx')) {
- return (string) call_user_func(
- '\\Sodium\\crypto_kx',
- $my_secret,
- $their_public,
- $client_public,
- $server_public
- );
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::keyExchange(
- $my_secret,
- $their_public,
- $client_public,
- $server_public
- );
- }
- return ParagonIE_Sodium_Crypto::keyExchange(
- $my_secret,
- $their_public,
- $client_public,
- $server_public
- );
- }
-
- /**
- * @param string $seed
- * @return string
- * @throws SodiumException
- */
- public static function crypto_kx_seed_keypair($seed)
- {
- ParagonIE_Sodium_Core_Util::declareScalarType($seed, 'string', 1);
-
- $seed = (string) $seed;
-
- if (ParagonIE_Sodium_Core_Util::strlen($seed) !== self::CRYPTO_KX_SEEDBYTES) {
- throw new SodiumException('seed must be SODIUM_CRYPTO_KX_SEEDBYTES bytes');
- }
-
- $sk = self::crypto_generichash($seed, '', self::CRYPTO_KX_SECRETKEYBYTES);
- $pk = self::crypto_scalarmult_base($sk);
- return $sk . $pk;
- }
-
- /**
- * @return string
- * @throws Exception
- */
- public static function crypto_kx_keypair()
- {
- $sk = self::randombytes_buf(self::CRYPTO_KX_SECRETKEYBYTES);
- $pk = self::crypto_scalarmult_base($sk);
- return $sk . $pk;
- }
-
- /**
- * @param string $keypair
- * @param string $serverPublicKey
- * @return array{0: string, 1: string}
- * @throws SodiumException
- */
- public static function crypto_kx_client_session_keys($keypair, $serverPublicKey)
- {
- ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($serverPublicKey, 'string', 2);
-
- $keypair = (string) $keypair;
- $serverPublicKey = (string) $serverPublicKey;
-
- if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_KX_KEYPAIRBYTES) {
- throw new SodiumException('keypair should be SODIUM_CRYPTO_KX_KEYPAIRBYTES bytes');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($serverPublicKey) !== self::CRYPTO_KX_PUBLICKEYBYTES) {
- throw new SodiumException('public keys must be SODIUM_CRYPTO_KX_PUBLICKEYBYTES bytes');
- }
-
- $sk = self::crypto_kx_secretkey($keypair);
- $pk = self::crypto_kx_publickey($keypair);
- $h = self::crypto_generichash_init(null, self::CRYPTO_KX_SESSIONKEYBYTES * 2);
- self::crypto_generichash_update($h, self::crypto_scalarmult($sk, $serverPublicKey));
- self::crypto_generichash_update($h, $pk);
- self::crypto_generichash_update($h, $serverPublicKey);
- $sessionKeys = self::crypto_generichash_final($h, self::CRYPTO_KX_SESSIONKEYBYTES * 2);
- return array(
- ParagonIE_Sodium_Core_Util::substr(
- $sessionKeys,
- 0,
- self::CRYPTO_KX_SESSIONKEYBYTES
- ),
- ParagonIE_Sodium_Core_Util::substr(
- $sessionKeys,
- self::CRYPTO_KX_SESSIONKEYBYTES,
- self::CRYPTO_KX_SESSIONKEYBYTES
- )
- );
- }
-
- /**
- * @param string $keypair
- * @param string $clientPublicKey
- * @return array{0: string, 1: string}
- * @throws SodiumException
- */
- public static function crypto_kx_server_session_keys($keypair, $clientPublicKey)
- {
- ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($clientPublicKey, 'string', 2);
-
- $keypair = (string) $keypair;
- $clientPublicKey = (string) $clientPublicKey;
-
- if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_KX_KEYPAIRBYTES) {
- throw new SodiumException('keypair should be SODIUM_CRYPTO_KX_KEYPAIRBYTES bytes');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($clientPublicKey) !== self::CRYPTO_KX_PUBLICKEYBYTES) {
- throw new SodiumException('public keys must be SODIUM_CRYPTO_KX_PUBLICKEYBYTES bytes');
- }
-
- $sk = self::crypto_kx_secretkey($keypair);
- $pk = self::crypto_kx_publickey($keypair);
- $h = self::crypto_generichash_init(null, self::CRYPTO_KX_SESSIONKEYBYTES * 2);
- self::crypto_generichash_update($h, self::crypto_scalarmult($sk, $clientPublicKey));
- self::crypto_generichash_update($h, $clientPublicKey);
- self::crypto_generichash_update($h, $pk);
- $sessionKeys = self::crypto_generichash_final($h, self::CRYPTO_KX_SESSIONKEYBYTES * 2);
- return array(
- ParagonIE_Sodium_Core_Util::substr(
- $sessionKeys,
- self::CRYPTO_KX_SESSIONKEYBYTES,
- self::CRYPTO_KX_SESSIONKEYBYTES
- ),
- ParagonIE_Sodium_Core_Util::substr(
- $sessionKeys,
- 0,
- self::CRYPTO_KX_SESSIONKEYBYTES
- )
- );
- }
-
- /**
- * @param string $kp
- * @return string
- * @throws SodiumException
- */
- public static function crypto_kx_secretkey($kp)
- {
- return ParagonIE_Sodium_Core_Util::substr(
- $kp,
- 0,
- self::CRYPTO_KX_SECRETKEYBYTES
- );
- }
-
- /**
- * @param string $kp
- * @return string
- * @throws SodiumException
- */
- public static function crypto_kx_publickey($kp)
- {
- return ParagonIE_Sodium_Core_Util::substr(
- $kp,
- self::CRYPTO_KX_SECRETKEYBYTES,
- self::CRYPTO_KX_PUBLICKEYBYTES
- );
- }
-
- /**
- * @param int $outlen
- * @param string $passwd
- * @param string $salt
- * @param int $opslimit
- * @param int $memlimit
- * @param int|null $alg
- * @return string
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_pwhash($outlen, $passwd, $salt, $opslimit, $memlimit, $alg = null)
- {
- ParagonIE_Sodium_Core_Util::declareScalarType($outlen, 'int', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($salt, 'string', 3);
- ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 4);
- ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 5);
-
- if (self::useNewSodiumAPI()) {
- if (!is_null($alg)) {
- ParagonIE_Sodium_Core_Util::declareScalarType($alg, 'int', 6);
- return sodium_crypto_pwhash($outlen, $passwd, $salt, $opslimit, $memlimit, $alg);
- }
- return sodium_crypto_pwhash($outlen, $passwd, $salt, $opslimit, $memlimit);
- }
- if (self::use_fallback('crypto_pwhash')) {
- return (string) call_user_func('\\Sodium\\crypto_pwhash', $outlen, $passwd, $salt, $opslimit, $memlimit);
- }
- // This is the best we can do.
- throw new SodiumException(
- 'This is not implemented, as it is not possible to implement Argon2i with acceptable performance in pure-PHP'
- );
- }
-
- /**
- * !Exclusive to sodium_compat!
- *
- * This returns TRUE if the native crypto_pwhash API is available by libsodium.
- * This returns FALSE if only sodium_compat is available.
- *
- * @return bool
- */
- public static function crypto_pwhash_is_available()
- {
- if (self::useNewSodiumAPI()) {
- return true;
- }
- if (self::use_fallback('crypto_pwhash')) {
- return true;
- }
- return false;
- }
-
- /**
- * @param string $passwd
- * @param int $opslimit
- * @param int $memlimit
- * @return string
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_pwhash_str($passwd, $opslimit, $memlimit)
- {
- ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 3);
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_pwhash_str($passwd, $opslimit, $memlimit);
- }
- if (self::use_fallback('crypto_pwhash_str')) {
- return (string) call_user_func('\\Sodium\\crypto_pwhash_str', $passwd, $opslimit, $memlimit);
- }
- // This is the best we can do.
- throw new SodiumException(
- 'This is not implemented, as it is not possible to implement Argon2i with acceptable performance in pure-PHP'
- );
- }
-
- /**
- * Do we need to rehash this password?
- *
- * @param string $hash
- * @param int $opslimit
- * @param int $memlimit
- * @return bool
- * @throws SodiumException
- */
- public static function crypto_pwhash_str_needs_rehash($hash, $opslimit, $memlimit)
- {
- ParagonIE_Sodium_Core_Util::declareScalarType($hash, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 3);
-
- // Just grab the first 4 pieces.
- $pieces = explode('$', (string) $hash);
- $prefix = implode('$', array_slice($pieces, 0, 4));
-
- // Rebuild the expected header.
- /** @var int $ops */
- $ops = (int) $opslimit;
- /** @var int $mem */
- $mem = (int) $memlimit >> 10;
- $encoded = self::CRYPTO_PWHASH_STRPREFIX . 'v=19$m=' . $mem . ',t=' . $ops . ',p=1';
-
- // Do they match? If so, we don't need to rehash, so return false.
- return !ParagonIE_Sodium_Core_Util::hashEquals($encoded, $prefix);
- }
-
- /**
- * @param string $passwd
- * @param string $hash
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_pwhash_str_verify($passwd, $hash)
- {
- ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($hash, 'string', 2);
-
- if (self::useNewSodiumAPI()) {
- return (bool) sodium_crypto_pwhash_str_verify($passwd, $hash);
- }
- if (self::use_fallback('crypto_pwhash_str_verify')) {
- return (bool) call_user_func('\\Sodium\\crypto_pwhash_str_verify', $passwd, $hash);
- }
- // This is the best we can do.
- throw new SodiumException(
- 'This is not implemented, as it is not possible to implement Argon2i with acceptable performance in pure-PHP'
- );
- }
-
- /**
- * @param int $outlen
- * @param string $passwd
- * @param string $salt
- * @param int $opslimit
- * @param int $memlimit
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function crypto_pwhash_scryptsalsa208sha256($outlen, $passwd, $salt, $opslimit, $memlimit)
- {
- ParagonIE_Sodium_Core_Util::declareScalarType($outlen, 'int', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($salt, 'string', 3);
- ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 4);
- ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 5);
-
- if (self::useNewSodiumAPI()) {
- return (string) sodium_crypto_pwhash_scryptsalsa208sha256(
- (int) $outlen,
- (string) $passwd,
- (string) $salt,
- (int) $opslimit,
- (int) $memlimit
- );
- }
- if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256')) {
- return (string) call_user_func(
- '\\Sodium\\crypto_pwhash_scryptsalsa208sha256',
- (int) $outlen,
- (string) $passwd,
- (string) $salt,
- (int) $opslimit,
- (int) $memlimit
- );
- }
- // This is the best we can do.
- throw new SodiumException(
- 'This is not implemented, as it is not possible to implement Scrypt with acceptable performance in pure-PHP'
- );
- }
-
- /**
- * !Exclusive to sodium_compat!
- *
- * This returns TRUE if the native crypto_pwhash API is available by libsodium.
- * This returns FALSE if only sodium_compat is available.
- *
- * @return bool
- */
- public static function crypto_pwhash_scryptsalsa208sha256_is_available()
- {
- if (self::useNewSodiumAPI()) {
- return true;
- }
- if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256')) {
- return true;
- }
- return false;
- }
-
- /**
- * @param string $passwd
- * @param int $opslimit
- * @param int $memlimit
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function crypto_pwhash_scryptsalsa208sha256_str($passwd, $opslimit, $memlimit)
- {
- ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 3);
-
- if (self::useNewSodiumAPI()) {
- return (string) sodium_crypto_pwhash_scryptsalsa208sha256_str(
- (string) $passwd,
- (int) $opslimit,
- (int) $memlimit
- );
- }
- if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256_str')) {
- return (string) call_user_func(
- '\\Sodium\\crypto_pwhash_scryptsalsa208sha256_str',
- (string) $passwd,
- (int) $opslimit,
- (int) $memlimit
- );
- }
- // This is the best we can do.
- throw new SodiumException(
- 'This is not implemented, as it is not possible to implement Scrypt with acceptable performance in pure-PHP'
- );
- }
-
- /**
- * @param string $passwd
- * @param string $hash
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function crypto_pwhash_scryptsalsa208sha256_str_verify($passwd, $hash)
- {
- ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($hash, 'string', 2);
-
- if (self::useNewSodiumAPI()) {
- return (bool) sodium_crypto_pwhash_scryptsalsa208sha256_str_verify(
- (string) $passwd,
- (string) $hash
- );
- }
- if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256_str_verify')) {
- return (bool) call_user_func(
- '\\Sodium\\crypto_pwhash_scryptsalsa208sha256_str_verify',
- (string) $passwd,
- (string) $hash
- );
- }
- // This is the best we can do.
- throw new SodiumException(
- 'This is not implemented, as it is not possible to implement Scrypt with acceptable performance in pure-PHP'
- );
- }
-
- /**
- * Calculate the shared secret between your secret key and your
- * recipient's public key.
- *
- * Algorithm: X25519 (ECDH over Curve25519)
- *
- * @param string $secretKey
- * @param string $publicKey
- * @return string
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_scalarmult($secretKey, $publicKey)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
- throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_scalarmult($secretKey, $publicKey);
- }
- if (self::use_fallback('crypto_scalarmult')) {
- return (string) call_user_func('\\Sodium\\crypto_scalarmult', $secretKey, $publicKey);
- }
-
- /* Output validation: Forbid all-zero keys */
- if (ParagonIE_Sodium_Core_Util::hashEquals($secretKey, str_repeat("\0", self::CRYPTO_BOX_SECRETKEYBYTES))) {
- throw new SodiumException('Zero secret key is not allowed');
- }
- if (ParagonIE_Sodium_Core_Util::hashEquals($publicKey, str_repeat("\0", self::CRYPTO_BOX_PUBLICKEYBYTES))) {
- throw new SodiumException('Zero public key is not allowed');
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::scalarmult($secretKey, $publicKey);
- }
- return ParagonIE_Sodium_Crypto::scalarmult($secretKey, $publicKey);
- }
-
- /**
- * Calculate an X25519 public key from an X25519 secret key.
- *
- * @param string $secretKey
- * @return string
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress TooFewArguments
- * @psalm-suppress MixedArgument
- */
- public static function crypto_scalarmult_base($secretKey)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
- throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_scalarmult_base($secretKey);
- }
- if (self::use_fallback('crypto_scalarmult_base')) {
- return (string) call_user_func('\\Sodium\\crypto_scalarmult_base', $secretKey);
- }
- if (ParagonIE_Sodium_Core_Util::hashEquals($secretKey, str_repeat("\0", self::CRYPTO_BOX_SECRETKEYBYTES))) {
- throw new SodiumException('Zero secret key is not allowed');
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::scalarmult_base($secretKey);
- }
- return ParagonIE_Sodium_Crypto::scalarmult_base($secretKey);
- }
-
- /**
- * Authenticated symmetric-key encryption.
- *
- * Algorithm: XSalsa20-Poly1305
- *
- * @param string $plaintext The message you're encrypting
- * @param string $nonce A Number to be used Once; must be 24 bytes
- * @param string $key Symmetric encryption key
- * @return string Ciphertext with Poly1305 MAC
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_secretbox($plaintext, $nonce, $key)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) {
- throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_secretbox($plaintext, $nonce, $key);
- }
- if (self::use_fallback('crypto_secretbox')) {
- return (string) call_user_func('\\Sodium\\crypto_secretbox', $plaintext, $nonce, $key);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::secretbox($plaintext, $nonce, $key);
- }
- return ParagonIE_Sodium_Crypto::secretbox($plaintext, $nonce, $key);
- }
-
- /**
- * Decrypts a message previously encrypted with crypto_secretbox().
- *
- * @param string $ciphertext Ciphertext with Poly1305 MAC
- * @param string $nonce A Number to be used Once; must be 24 bytes
- * @param string $key Symmetric encryption key
- * @return string Original plaintext message
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedInferredReturnType
- * @psalm-suppress MixedReturnStatement
- */
- public static function crypto_secretbox_open($ciphertext, $nonce, $key)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) {
- throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- /**
- * @psalm-suppress InvalidReturnStatement
- * @psalm-suppress FalsableReturnStatement
- */
- return sodium_crypto_secretbox_open($ciphertext, $nonce, $key);
- }
- if (self::use_fallback('crypto_secretbox_open')) {
- return call_user_func('\\Sodium\\crypto_secretbox_open', $ciphertext, $nonce, $key);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::secretbox_open($ciphertext, $nonce, $key);
- }
- return ParagonIE_Sodium_Crypto::secretbox_open($ciphertext, $nonce, $key);
- }
-
- /**
- * Return a secure random key for use with crypto_secretbox
- *
- * @return string
- * @throws Exception
- * @throws Error
- */
- public static function crypto_secretbox_keygen()
- {
- return random_bytes(self::CRYPTO_SECRETBOX_KEYBYTES);
- }
-
- /**
- * Authenticated symmetric-key encryption.
- *
- * Algorithm: XChaCha20-Poly1305
- *
- * @param string $plaintext The message you're encrypting
- * @param string $nonce A Number to be used Once; must be 24 bytes
- * @param string $key Symmetric encryption key
- * @return string Ciphertext with Poly1305 MAC
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_secretbox_xchacha20poly1305($plaintext, $nonce, $key)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) {
- throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::secretbox_xchacha20poly1305($plaintext, $nonce, $key);
- }
- return ParagonIE_Sodium_Crypto::secretbox_xchacha20poly1305($plaintext, $nonce, $key);
- }
- /**
- * Decrypts a message previously encrypted with crypto_secretbox_xchacha20poly1305().
- *
- * @param string $ciphertext Ciphertext with Poly1305 MAC
- * @param string $nonce A Number to be used Once; must be 24 bytes
- * @param string $key Symmetric encryption key
- * @return string Original plaintext message
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_secretbox_xchacha20poly1305_open($ciphertext, $nonce, $key)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) {
- throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
- }
-
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::secretbox_xchacha20poly1305_open($ciphertext, $nonce, $key);
- }
- return ParagonIE_Sodium_Crypto::secretbox_xchacha20poly1305_open($ciphertext, $nonce, $key);
- }
-
- /**
- * @param string $key
- * @return array<int, string> Returns a state and a header.
- * @throws Exception
- * @throws SodiumException
- */
- public static function crypto_secretstream_xchacha20poly1305_init_push($key)
- {
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_init_push($key);
- }
- return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_init_push($key);
- }
-
- /**
- * @param string $header
- * @param string $key
- * @return string Returns a state.
- * @throws Exception
- */
- public static function crypto_secretstream_xchacha20poly1305_init_pull($header, $key)
- {
- if (ParagonIE_Sodium_Core_Util::strlen($header) < self::CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES) {
- throw new SodiumException(
- 'header size should be SODIUM_CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES bytes'
- );
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_init_pull($key, $header);
- }
- return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_init_pull($key, $header);
- }
-
- /**
- * @param string $state
- * @param string $msg
- * @param string $aad
- * @param int $tag
- * @return string
- * @throws SodiumException
- */
- public static function crypto_secretstream_xchacha20poly1305_push(&$state, $msg, $aad = '', $tag = 0)
- {
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_push(
- $state,
- $msg,
- $aad,
- $tag
- );
- }
- return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_push(
- $state,
- $msg,
- $aad,
- $tag
- );
- }
-
- /**
- * @param string $state
- * @param string $msg
- * @param string $aad
- * @return bool|array{0: string, 1: int}
- * @throws SodiumException
- */
- public static function crypto_secretstream_xchacha20poly1305_pull(&$state, $msg, $aad = '')
- {
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_pull(
- $state,
- $msg,
- $aad
- );
- }
- return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_pull(
- $state,
- $msg,
- $aad
- );
- }
-
- /**
- * @return string
- * @throws Exception
- */
- public static function crypto_secretstream_xchacha20poly1305_keygen()
- {
- return random_bytes(self::CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_KEYBYTES);
- }
-
- /**
- * @param string $state
- * @return void
- * @throws SodiumException
- */
- public static function crypto_secretstream_xchacha20poly1305_rekey(&$state)
- {
- if (PHP_INT_SIZE === 4) {
- ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_rekey($state);
- } else {
- ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_rekey($state);
- }
- }
-
- /**
- * Calculates a SipHash-2-4 hash of a message for a given key.
- *
- * @param string $message Input message
- * @param string $key SipHash-2-4 key
- * @return string Hash
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedInferredReturnType
- * @psalm-suppress MixedReturnStatement
- */
- public static function crypto_shorthash($message, $key)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 2);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SHORTHASH_KEYBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_SHORTHASH_KEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_shorthash($message, $key);
- }
- if (self::use_fallback('crypto_shorthash')) {
- return (string) call_user_func('\\Sodium\\crypto_shorthash', $message, $key);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Core32_SipHash::sipHash24($message, $key);
- }
- return ParagonIE_Sodium_Core_SipHash::sipHash24($message, $key);
- }
-
- /**
- * Return a secure random key for use with crypto_shorthash
- *
- * @return string
- * @throws Exception
- * @throws Error
- */
- public static function crypto_shorthash_keygen()
- {
- return random_bytes(self::CRYPTO_SHORTHASH_KEYBYTES);
- }
-
- /**
- * Returns a signed message. You probably want crypto_sign_detached()
- * instead, which only returns the signature.
- *
- * Algorithm: Ed25519 (EdDSA over Curve25519)
- *
- * @param string $message Message to be signed.
- * @param string $secretKey Secret signing key.
- * @return string Signed message (signature is prefixed).
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedInferredReturnType
- * @psalm-suppress MixedReturnStatement
- */
- public static function crypto_sign($message, $secretKey)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 2);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_SIGN_SECRETKEYBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_SIGN_SECRETKEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_sign($message, $secretKey);
- }
- if (self::use_fallback('crypto_sign')) {
- return (string) call_user_func('\\Sodium\\crypto_sign', $message, $secretKey);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::sign($message, $secretKey);
- }
- return ParagonIE_Sodium_Crypto::sign($message, $secretKey);
- }
-
- /**
- * Validates a signed message then returns the message.
- *
- * @param string $signedMessage A signed message
- * @param string $publicKey A public key
- * @return string The original message (if the signature is
- * valid for this public key)
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedInferredReturnType
- * @psalm-suppress MixedReturnStatement
- */
- public static function crypto_sign_open($signedMessage, $publicKey)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($signedMessage, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($signedMessage) < self::CRYPTO_SIGN_BYTES) {
- throw new SodiumException('Argument 1 must be at least CRYPTO_SIGN_BYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_SIGN_PUBLICKEYBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_SIGN_PUBLICKEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- /**
- * @psalm-suppress InvalidReturnStatement
- * @psalm-suppress FalsableReturnStatement
- */
- return sodium_crypto_sign_open($signedMessage, $publicKey);
- }
- if (self::use_fallback('crypto_sign_open')) {
- return call_user_func('\\Sodium\\crypto_sign_open', $signedMessage, $publicKey);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::sign_open($signedMessage, $publicKey);
- }
- return ParagonIE_Sodium_Crypto::sign_open($signedMessage, $publicKey);
- }
-
- /**
- * Generate a new random Ed25519 keypair.
- *
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function crypto_sign_keypair()
- {
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_sign_keypair();
- }
- if (self::use_fallback('crypto_sign_keypair')) {
- return (string) call_user_func('\\Sodium\\crypto_sign_keypair');
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Core32_Ed25519::keypair();
- }
- return ParagonIE_Sodium_Core_Ed25519::keypair();
- }
-
- /**
- * @param string $sk
- * @param string $pk
- * @return string
- * @throws SodiumException
- */
- public static function crypto_sign_keypair_from_secretkey_and_publickey($sk, $pk)
- {
- ParagonIE_Sodium_Core_Util::declareScalarType($sk, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($pk, 'string', 1);
- $sk = (string) $sk;
- $pk = (string) $pk;
-
- if (ParagonIE_Sodium_Core_Util::strlen($sk) !== self::CRYPTO_SIGN_SECRETKEYBYTES) {
- throw new SodiumException('secretkey should be SODIUM_CRYPTO_SIGN_SECRETKEYBYTES bytes');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($pk) !== self::CRYPTO_SIGN_PUBLICKEYBYTES) {
- throw new SodiumException('publickey should be SODIUM_CRYPTO_SIGN_PUBLICKEYBYTES bytes');
- }
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_sign_keypair_from_secretkey_and_publickey($sk, $pk);
- }
- return $sk . $pk;
- }
-
- /**
- * Generate an Ed25519 keypair from a seed.
- *
- * @param string $seed Input seed
- * @return string Keypair
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_sign_seed_keypair($seed)
- {
- ParagonIE_Sodium_Core_Util::declareScalarType($seed, 'string', 1);
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_sign_seed_keypair($seed);
- }
- if (self::use_fallback('crypto_sign_keypair')) {
- return (string) call_user_func('\\Sodium\\crypto_sign_seed_keypair', $seed);
- }
- $publicKey = '';
- $secretKey = '';
- if (PHP_INT_SIZE === 4) {
- ParagonIE_Sodium_Core32_Ed25519::seed_keypair($publicKey, $secretKey, $seed);
- } else {
- ParagonIE_Sodium_Core_Ed25519::seed_keypair($publicKey, $secretKey, $seed);
- }
- return $secretKey . $publicKey;
- }
-
- /**
- * Extract an Ed25519 public key from an Ed25519 keypair.
- *
- * @param string $keypair Keypair
- * @return string Public key
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_sign_publickey($keypair)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_SIGN_KEYPAIRBYTES) {
- throw new SodiumException('Argument 1 must be CRYPTO_SIGN_KEYPAIRBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_sign_publickey($keypair);
- }
- if (self::use_fallback('crypto_sign_publickey')) {
- return (string) call_user_func('\\Sodium\\crypto_sign_publickey', $keypair);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Core32_Ed25519::publickey($keypair);
- }
- return ParagonIE_Sodium_Core_Ed25519::publickey($keypair);
- }
-
- /**
- * Calculate an Ed25519 public key from an Ed25519 secret key.
- *
- * @param string $secretKey Your Ed25519 secret key
- * @return string The corresponding Ed25519 public key
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_sign_publickey_from_secretkey($secretKey)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_SIGN_SECRETKEYBYTES) {
- throw new SodiumException('Argument 1 must be CRYPTO_SIGN_SECRETKEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_sign_publickey_from_secretkey($secretKey);
- }
- if (self::use_fallback('crypto_sign_publickey_from_secretkey')) {
- return (string) call_user_func('\\Sodium\\crypto_sign_publickey_from_secretkey', $secretKey);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Core32_Ed25519::publickey_from_secretkey($secretKey);
- }
- return ParagonIE_Sodium_Core_Ed25519::publickey_from_secretkey($secretKey);
- }
-
- /**
- * Extract an Ed25519 secret key from an Ed25519 keypair.
- *
- * @param string $keypair Keypair
- * @return string Secret key
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_sign_secretkey($keypair)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_SIGN_KEYPAIRBYTES) {
- throw new SodiumException('Argument 1 must be CRYPTO_SIGN_KEYPAIRBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_sign_secretkey($keypair);
- }
- if (self::use_fallback('crypto_sign_secretkey')) {
- return (string) call_user_func('\\Sodium\\crypto_sign_secretkey', $keypair);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Core32_Ed25519::secretkey($keypair);
- }
- return ParagonIE_Sodium_Core_Ed25519::secretkey($keypair);
- }
-
- /**
- * Calculate the Ed25519 signature of a message and return ONLY the signature.
- *
- * Algorithm: Ed25519 (EdDSA over Curve25519)
- *
- * @param string $message Message to be signed
- * @param string $secretKey Secret signing key
- * @return string Digital signature
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_sign_detached($message, $secretKey)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 2);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_SIGN_SECRETKEYBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_SIGN_SECRETKEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_sign_detached($message, $secretKey);
- }
- if (self::use_fallback('crypto_sign_detached')) {
- return (string) call_user_func('\\Sodium\\crypto_sign_detached', $message, $secretKey);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::sign_detached($message, $secretKey);
- }
- return ParagonIE_Sodium_Crypto::sign_detached($message, $secretKey);
- }
-
- /**
- * Verify the Ed25519 signature of a message.
- *
- * @param string $signature Digital sginature
- * @param string $message Message to be verified
- * @param string $publicKey Public key
- * @return bool TRUE if this signature is good for this public key;
- * FALSE otherwise
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_sign_verify_detached($signature, $message, $publicKey)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($signature, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 3);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($signature) !== self::CRYPTO_SIGN_BYTES) {
- throw new SodiumException('Argument 1 must be CRYPTO_SIGN_BYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_SIGN_PUBLICKEYBYTES) {
- throw new SodiumException('Argument 3 must be CRYPTO_SIGN_PUBLICKEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_sign_verify_detached($signature, $message, $publicKey);
- }
- if (self::use_fallback('crypto_sign_verify_detached')) {
- return (bool) call_user_func(
- '\\Sodium\\crypto_sign_verify_detached',
- $signature,
- $message,
- $publicKey
- );
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Crypto32::sign_verify_detached($signature, $message, $publicKey);
- }
- return ParagonIE_Sodium_Crypto::sign_verify_detached($signature, $message, $publicKey);
- }
-
- /**
- * Convert an Ed25519 public key to a Curve25519 public key
- *
- * @param string $pk
- * @return string
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_sign_ed25519_pk_to_curve25519($pk)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($pk, 'string', 1);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($pk) < self::CRYPTO_SIGN_PUBLICKEYBYTES) {
- throw new SodiumException('Argument 1 must be at least CRYPTO_SIGN_PUBLICKEYBYTES long.');
- }
- if (self::useNewSodiumAPI()) {
- if (is_callable('crypto_sign_ed25519_pk_to_curve25519')) {
- return (string) sodium_crypto_sign_ed25519_pk_to_curve25519($pk);
- }
- }
- if (self::use_fallback('crypto_sign_ed25519_pk_to_curve25519')) {
- return (string) call_user_func('\\Sodium\\crypto_sign_ed25519_pk_to_curve25519', $pk);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Core32_Ed25519::pk_to_curve25519($pk);
- }
- return ParagonIE_Sodium_Core_Ed25519::pk_to_curve25519($pk);
- }
-
- /**
- * Convert an Ed25519 secret key to a Curve25519 secret key
- *
- * @param string $sk
- * @return string
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_sign_ed25519_sk_to_curve25519($sk)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($sk, 'string', 1);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($sk) < self::CRYPTO_SIGN_SEEDBYTES) {
- throw new SodiumException('Argument 1 must be at least CRYPTO_SIGN_SEEDBYTES long.');
- }
- if (self::useNewSodiumAPI()) {
- if (is_callable('crypto_sign_ed25519_sk_to_curve25519')) {
- return sodium_crypto_sign_ed25519_sk_to_curve25519($sk);
- }
- }
- if (self::use_fallback('crypto_sign_ed25519_sk_to_curve25519')) {
- return (string) call_user_func('\\Sodium\\crypto_sign_ed25519_sk_to_curve25519', $sk);
- }
-
- $h = hash('sha512', ParagonIE_Sodium_Core_Util::substr($sk, 0, 32), true);
- $h[0] = ParagonIE_Sodium_Core_Util::intToChr(
- ParagonIE_Sodium_Core_Util::chrToInt($h[0]) & 248
- );
- $h[31] = ParagonIE_Sodium_Core_Util::intToChr(
- (ParagonIE_Sodium_Core_Util::chrToInt($h[31]) & 127) | 64
- );
- return ParagonIE_Sodium_Core_Util::substr($h, 0, 32);
- }
-
- /**
- * Expand a key and nonce into a keystream of pseudorandom bytes.
- *
- * @param int $len Number of bytes desired
- * @param string $nonce Number to be used Once; must be 24 bytes
- * @param string $key XSalsa20 key
- * @return string Pseudorandom stream that can be XORed with messages
- * to provide encryption (but not authentication; see
- * Poly1305 or crypto_auth() for that, which is not
- * optional for security)
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_stream($len, $nonce, $key)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($len, 'int', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_NONCEBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_KEYBYTES) {
- throw new SodiumException('Argument 3 must be CRYPTO_STREAM_KEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_stream($len, $nonce, $key);
- }
- if (self::use_fallback('crypto_stream')) {
- return (string) call_user_func('\\Sodium\\crypto_stream', $len, $nonce, $key);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Core32_XSalsa20::xsalsa20($len, $nonce, $key);
- }
- return ParagonIE_Sodium_Core_XSalsa20::xsalsa20($len, $nonce, $key);
- }
-
- /**
- * DANGER! UNAUTHENTICATED ENCRYPTION!
- *
- * Unless you are following expert advice, do not used this feature.
- *
- * Algorithm: XSalsa20
- *
- * This DOES NOT provide ciphertext integrity.
- *
- * @param string $message Plaintext message
- * @param string $nonce Number to be used Once; must be 24 bytes
- * @param string $key Encryption key
- * @return string Encrypted text which is vulnerable to chosen-
- * ciphertext attacks unless you implement some
- * other mitigation to the ciphertext (i.e.
- * Encrypt then MAC)
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_stream_xor($message, $nonce, $key)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_NONCEBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_KEYBYTES) {
- throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI()) {
- return sodium_crypto_stream_xor($message, $nonce, $key);
- }
- if (self::use_fallback('crypto_stream_xor')) {
- return (string) call_user_func('\\Sodium\\crypto_stream_xor', $message, $nonce, $key);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Core32_XSalsa20::xsalsa20_xor($message, $nonce, $key);
- }
- return ParagonIE_Sodium_Core_XSalsa20::xsalsa20_xor($message, $nonce, $key);
- }
-
- /**
- * Return a secure random key for use with crypto_stream
- *
- * @return string
- * @throws Exception
- * @throws Error
- */
- public static function crypto_stream_keygen()
- {
- return random_bytes(self::CRYPTO_STREAM_KEYBYTES);
- }
-
-
- /**
- * Expand a key and nonce into a keystream of pseudorandom bytes.
- *
- * @param int $len Number of bytes desired
- * @param string $nonce Number to be used Once; must be 24 bytes
- * @param string $key XChaCha20 key
- * @param bool $dontFallback
- * @return string Pseudorandom stream that can be XORed with messages
- * to provide encryption (but not authentication; see
- * Poly1305 or crypto_auth() for that, which is not
- * optional for security)
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_stream_xchacha20($len, $nonce, $key, $dontFallback = false)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($len, 'int', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_XCHACHA20_NONCEBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_XCHACHA20_NONCEBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_XCHACHA20_KEYBYTES) {
- throw new SodiumException('Argument 3 must be CRYPTO_STREAM_XCHACHA20_KEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_stream_xchacha20($len, $nonce, $key);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Core32_XChaCha20::stream($len, $nonce, $key);
- }
- return ParagonIE_Sodium_Core_XChaCha20::stream($len, $nonce, $key);
- }
-
- /**
- * DANGER! UNAUTHENTICATED ENCRYPTION!
- *
- * Unless you are following expert advice, do not used this feature.
- *
- * Algorithm: XChaCha20
- *
- * This DOES NOT provide ciphertext integrity.
- *
- * @param string $message Plaintext message
- * @param string $nonce Number to be used Once; must be 24 bytes
- * @param string $key Encryption key
- * @return string Encrypted text which is vulnerable to chosen-
- * ciphertext attacks unless you implement some
- * other mitigation to the ciphertext (i.e.
- * Encrypt then MAC)
- * @param bool $dontFallback
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function crypto_stream_xchacha20_xor($message, $nonce, $key, $dontFallback = false)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
- ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
-
- /* Input validation: */
- if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_XCHACHA20_NONCEBYTES) {
- throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_XCHACHA20_NONCEBYTES long.');
- }
- if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_XCHACHA20_KEYBYTES) {
- throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_XCHACHA20_KEYBYTES long.');
- }
-
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_stream_xchacha20_xor($message, $nonce, $key);
- }
- if (PHP_INT_SIZE === 4) {
- return ParagonIE_Sodium_Core32_XChaCha20::streamXorIc($message, $nonce, $key);
- }
- return ParagonIE_Sodium_Core_XChaCha20::streamXorIc($message, $nonce, $key);
- }
-
- /**
- * Return a secure random key for use with crypto_stream_xchacha20
- *
- * @return string
- * @throws Exception
- * @throws Error
- */
- public static function crypto_stream_xchacha20_keygen()
- {
- return random_bytes(self::CRYPTO_STREAM_XCHACHA20_KEYBYTES);
- }
-
- /**
- * Cache-timing-safe implementation of hex2bin().
- *
- * @param string $string Hexadecimal string
- * @return string Raw binary string
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress TooFewArguments
- * @psalm-suppress MixedArgument
- */
- public static function hex2bin($string)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($string, 'string', 1);
-
- if (self::useNewSodiumAPI()) {
- if (is_callable('sodium_hex2bin')) {
- return (string) sodium_hex2bin($string);
- }
- }
- if (self::use_fallback('hex2bin')) {
- return (string) call_user_func('\\Sodium\\hex2bin', $string);
- }
- return ParagonIE_Sodium_Core_Util::hex2bin($string);
- }
-
- /**
- * Increase a string (little endian)
- *
- * @param string $var
- *
- * @return void
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function increment(&$var)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($var, 'string', 1);
-
- if (self::useNewSodiumAPI()) {
- sodium_increment($var);
- return;
- }
- if (self::use_fallback('increment')) {
- $func = '\\Sodium\\increment';
- $func($var);
- return;
- }
-
- $len = ParagonIE_Sodium_Core_Util::strlen($var);
- $c = 1;
- $copy = '';
- for ($i = 0; $i < $len; ++$i) {
- $c += ParagonIE_Sodium_Core_Util::chrToInt(
- ParagonIE_Sodium_Core_Util::substr($var, $i, 1)
- );
- $copy .= ParagonIE_Sodium_Core_Util::intToChr($c);
- $c >>= 8;
- }
- $var = $copy;
- }
-
- /**
- * @param string $str
- * @return bool
- *
- * @throws SodiumException
- */
- public static function is_zero($str)
- {
- $d = 0;
- for ($i = 0; $i < 32; ++$i) {
- $d |= ParagonIE_Sodium_Core_Util::chrToInt($str[$i]);
- }
- return ((($d - 1) >> 31) & 1) === 1;
- }
-
- /**
- * The equivalent to the libsodium minor version we aim to be compatible
- * with (sans pwhash and memzero).
- *
- * @return int
- */
- public static function library_version_major()
- {
- if (self::useNewSodiumAPI() && defined('SODIUM_LIBRARY_MAJOR_VERSION')) {
- return SODIUM_LIBRARY_MAJOR_VERSION;
- }
- if (self::use_fallback('library_version_major')) {
- /** @psalm-suppress UndefinedFunction */
- return (int) call_user_func('\\Sodium\\library_version_major');
- }
- return self::LIBRARY_VERSION_MAJOR;
- }
-
- /**
- * The equivalent to the libsodium minor version we aim to be compatible
- * with (sans pwhash and memzero).
- *
- * @return int
- */
- public static function library_version_minor()
- {
- if (self::useNewSodiumAPI() && defined('SODIUM_LIBRARY_MINOR_VERSION')) {
- return SODIUM_LIBRARY_MINOR_VERSION;
- }
- if (self::use_fallback('library_version_minor')) {
- /** @psalm-suppress UndefinedFunction */
- return (int) call_user_func('\\Sodium\\library_version_minor');
- }
- return self::LIBRARY_VERSION_MINOR;
- }
-
- /**
- * Compare two strings.
- *
- * @param string $left
- * @param string $right
- * @return int
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- */
- public static function memcmp($left, $right)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($left, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($right, 'string', 2);
-
- if (self::useNewSodiumAPI()) {
- return sodium_memcmp($left, $right);
- }
- if (self::use_fallback('memcmp')) {
- return (int) call_user_func('\\Sodium\\memcmp', $left, $right);
- }
- /** @var string $left */
- /** @var string $right */
- return ParagonIE_Sodium_Core_Util::memcmp($left, $right);
- }
-
- /**
- * It's actually not possible to zero memory buffers in PHP. You need the
- * native library for that.
- *
- * @param string|null $var
- * @param-out string|null $var
- *
- * @return void
- * @throws SodiumException (Unless libsodium is installed)
- * @throws TypeError
- * @psalm-suppress TooFewArguments
- */
- public static function memzero(&$var)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($var, 'string', 1);
-
- if (self::useNewSodiumAPI()) {
- /** @psalm-suppress MixedArgument */
- sodium_memzero($var);
- return;
- }
- if (self::use_fallback('memzero')) {
- $func = '\\Sodium\\memzero';
- $func($var);
- if ($var === null) {
- return;
- }
- }
- // This is the best we can do.
- throw new SodiumException(
- 'This is not implemented in sodium_compat, as it is not possible to securely wipe memory from PHP. ' .
- 'To fix this error, make sure libsodium is installed and the PHP extension is enabled.'
- );
- }
-
- /**
- * @param string $unpadded
- * @param int $blockSize
- * @param bool $dontFallback
- * @return string
- * @throws SodiumException
- */
- public static function pad($unpadded, $blockSize, $dontFallback = false)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($unpadded, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($blockSize, 'int', 2);
-
- $unpadded = (string) $unpadded;
- $blockSize = (int) $blockSize;
-
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return (string) sodium_pad($unpadded, $blockSize);
- }
-
- if ($blockSize <= 0) {
- throw new SodiumException(
- 'block size cannot be less than 1'
- );
- }
- $unpadded_len = ParagonIE_Sodium_Core_Util::strlen($unpadded);
- $xpadlen = ($blockSize - 1);
- if (($blockSize & ($blockSize - 1)) === 0) {
- $xpadlen -= $unpadded_len & ($blockSize - 1);
- } else {
- $xpadlen -= $unpadded_len % $blockSize;
- }
-
- $xpadded_len = $unpadded_len + $xpadlen;
- $padded = str_repeat("\0", $xpadded_len - 1);
- if ($unpadded_len > 0) {
- $st = 1;
- $i = 0;
- $k = $unpadded_len;
- for ($j = 0; $j <= $xpadded_len; ++$j) {
- $i = (int) $i;
- $k = (int) $k;
- $st = (int) $st;
- if ($j >= $unpadded_len) {
- $padded[$j] = "\0";
- } else {
- $padded[$j] = $unpadded[$j];
- }
- /** @var int $k */
- $k -= $st;
- $st = (int) (~(
- (
- (
- ($k >> 48)
- |
- ($k >> 32)
- |
- ($k >> 16)
- |
- $k
- ) - 1
- ) >> 16
- )
- ) & 1;
- $i += $st;
- }
- }
-
- $mask = 0;
- $tail = $xpadded_len;
- for ($i = 0; $i < $blockSize; ++$i) {
- # barrier_mask = (unsigned char)
- # (((i ^ xpadlen) - 1U) >> ((sizeof(size_t) - 1U) * CHAR_BIT));
- $barrier_mask = (($i ^ $xpadlen) -1) >> ((PHP_INT_SIZE << 3) - 1);
- # tail[-i] = (tail[-i] & mask) | (0x80 & barrier_mask);
- $padded[$tail - $i] = ParagonIE_Sodium_Core_Util::intToChr(
- (ParagonIE_Sodium_Core_Util::chrToInt($padded[$tail - $i]) & $mask)
- |
- (0x80 & $barrier_mask)
- );
- # mask |= barrier_mask;
- $mask |= $barrier_mask;
- }
- return $padded;
- }
-
- /**
- * @param string $padded
- * @param int $blockSize
- * @param bool $dontFallback
- * @return string
- * @throws SodiumException
- */
- public static function unpad($padded, $blockSize, $dontFallback = false)
- {
- /* Type checks: */
- ParagonIE_Sodium_Core_Util::declareScalarType($padded, 'string', 1);
- ParagonIE_Sodium_Core_Util::declareScalarType($blockSize, 'int', 2);
-
- $padded = (string) $padded;
- $blockSize = (int) $blockSize;
-
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return (string) sodium_unpad($padded, $blockSize);
- }
- if ($blockSize <= 0) {
- throw new SodiumException('block size cannot be less than 1');
- }
- $padded_len = ParagonIE_Sodium_Core_Util::strlen($padded);
- if ($padded_len < $blockSize) {
- throw new SodiumException('invalid padding');
- }
-
- # tail = &padded[padded_len - 1U];
- $tail = $padded_len - 1;
-
- $acc = 0;
- $valid = 0;
- $pad_len = 0;
-
- $found = 0;
- for ($i = 0; $i < $blockSize; ++$i) {
- # c = tail[-i];
- $c = ParagonIE_Sodium_Core_Util::chrToInt($padded[$tail - $i]);
-
- # is_barrier =
- # (( (acc - 1U) & (pad_len - 1U) & ((c ^ 0x80) - 1U) ) >> 8) & 1U;
- $is_barrier = (
- (
- ($acc - 1) & ($pad_len - 1) & (($c ^ 80) - 1)
- ) >> 7
- ) & 1;
- $is_barrier &= ~$found;
- $found |= $is_barrier;
-
- # acc |= c;
- $acc |= $c;
-
- # pad_len |= i & (1U + ~is_barrier);
- $pad_len |= $i & (1 + ~$is_barrier);
-
- # valid |= (unsigned char) is_barrier;
- $valid |= ($is_barrier & 0xff);
- }
- # unpadded_len = padded_len - 1U - pad_len;
- $unpadded_len = $padded_len - 1 - $pad_len;
- if ($valid !== 1) {
- throw new SodiumException('invalid padding');
- }
- return ParagonIE_Sodium_Core_Util::substr($padded, 0, $unpadded_len);
- }
-
- /**
- * Will sodium_compat run fast on the current hardware and PHP configuration?
- *
- * @return bool
- */
- public static function polyfill_is_fast()
- {
- if (extension_loaded('sodium')) {
- return true;
- }
- if (extension_loaded('libsodium')) {
- return true;
- }
- return PHP_INT_SIZE === 8;
- }
-
- /**
- * Generate a string of bytes from the kernel's CSPRNG.
- * Proudly uses /dev/urandom (if getrandom(2) is not available).
- *
- * @param int $numBytes
- * @return string
- * @throws Exception
- * @throws TypeError
- */
- public static function randombytes_buf($numBytes)
- {
- /* Type checks: */
- if (!is_int($numBytes)) {
- if (is_numeric($numBytes)) {
- $numBytes = (int) $numBytes;
- } else {
- throw new TypeError(
- 'Argument 1 must be an integer, ' . gettype($numBytes) . ' given.'
- );
- }
- }
- if (self::use_fallback('randombytes_buf')) {
- return (string) call_user_func('\\Sodium\\randombytes_buf', $numBytes);
- }
- return random_bytes($numBytes);
- }
-
- /**
- * Generate an integer between 0 and $range (non-inclusive).
- *
- * @param int $range
- * @return int
- * @throws Exception
- * @throws Error
- * @throws TypeError
- */
- public static function randombytes_uniform($range)
- {
- /* Type checks: */
- if (!is_int($range)) {
- if (is_numeric($range)) {
- $range = (int) $range;
- } else {
- throw new TypeError(
- 'Argument 1 must be an integer, ' . gettype($range) . ' given.'
- );
- }
- }
- if (self::use_fallback('randombytes_uniform')) {
- return (int) call_user_func('\\Sodium\\randombytes_uniform', $range);
- }
- return random_int(0, $range - 1);
- }
-
- /**
- * Generate a random 16-bit integer.
- *
- * @return int
- * @throws Exception
- * @throws Error
- * @throws TypeError
- */
- public static function randombytes_random16()
- {
- if (self::use_fallback('randombytes_random16')) {
- return (int) call_user_func('\\Sodium\\randombytes_random16');
- }
- return random_int(0, 65535);
- }
-
- /**
- * @param string $p
- * @param bool $dontFallback
- * @return bool
- * @throws SodiumException
- */
- public static function ristretto255_is_valid_point($p, $dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_core_ristretto255_is_valid_point($p);
- }
- try {
- $r = ParagonIE_Sodium_Core_Ristretto255::ristretto255_frombytes($p);
- return $r['res'] === 0 &&
- ParagonIE_Sodium_Core_Ristretto255::ristretto255_point_is_canonical($p) === 1;
- } catch (SodiumException $ex) {
- if ($ex->getMessage() === 'S is not canonical') {
- return false;
- }
- throw $ex;
- }
- }
-
- /**
- * @param string $p
- * @param string $q
- * @param bool $dontFallback
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_add($p, $q, $dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_core_ristretto255_add($p, $q);
- }
- return ParagonIE_Sodium_Core_Ristretto255::ristretto255_add($p, $q);
- }
-
- /**
- * @param string $p
- * @param string $q
- * @param bool $dontFallback
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_sub($p, $q, $dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_core_ristretto255_sub($p, $q);
- }
- return ParagonIE_Sodium_Core_Ristretto255::ristretto255_sub($p, $q);
- }
-
- /**
- * @param string $r
- * @param bool $dontFallback
- * @return string
- *
- * @throws SodiumException
- */
- public static function ristretto255_from_hash($r, $dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_core_ristretto255_from_hash($r);
- }
- return ParagonIE_Sodium_Core_Ristretto255::ristretto255_from_hash($r);
- }
-
- /**
- * @param bool $dontFallback
- * @return string
- *
- * @throws SodiumException
- */
- public static function ristretto255_random($dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_core_ristretto255_random();
- }
- return ParagonIE_Sodium_Core_Ristretto255::ristretto255_random();
- }
-
- /**
- * @param bool $dontFallback
- * @return string
- *
- * @throws SodiumException
- */
- public static function ristretto255_scalar_random($dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_core_ristretto255_scalar_random();
- }
- return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_random();
- }
-
- /**
- * @param string $s
- * @param bool $dontFallback
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_scalar_invert($s, $dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_core_ristretto255_scalar_invert($s);
- }
- return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_invert($s);
- }
- /**
- * @param string $s
- * @param bool $dontFallback
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_scalar_negate($s, $dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_core_ristretto255_scalar_negate($s);
- }
- return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_negate($s);
- }
-
- /**
- * @param string $s
- * @param bool $dontFallback
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_scalar_complement($s, $dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_core_ristretto255_scalar_complement($s);
- }
- return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_complement($s);
- }
-
- /**
- * @param string $x
- * @param string $y
- * @param bool $dontFallback
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_scalar_add($x, $y, $dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_core_ristretto255_scalar_add($x, $y);
- }
- return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_add($x, $y);
- }
-
- /**
- * @param string $x
- * @param string $y
- * @param bool $dontFallback
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_scalar_sub($x, $y, $dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_core_ristretto255_scalar_sub($x, $y);
- }
- return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_sub($x, $y);
- }
-
- /**
- * @param string $x
- * @param string $y
- * @param bool $dontFallback
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_scalar_mul($x, $y, $dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_core_ristretto255_scalar_mul($x, $y);
- }
- return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_mul($x, $y);
- }
-
- /**
- * @param string $n
- * @param string $p
- * @param bool $dontFallback
- * @return string
- * @throws SodiumException
- */
- public static function scalarmult_ristretto255($n, $p, $dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_scalarmult_ristretto255($n, $p);
- }
- return ParagonIE_Sodium_Core_Ristretto255::scalarmult_ristretto255($n, $p);
- }
-
- /**
- * @param string $n
- * @param string $p
- * @param bool $dontFallback
- * @return string
- * @throws SodiumException
- */
- public static function scalarmult_ristretto255_base($n, $dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_scalarmult_ristretto255_base($n);
- }
- return ParagonIE_Sodium_Core_Ristretto255::scalarmult_ristretto255_base($n);
- }
-
- /**
- * @param string $s
- * @param bool $dontFallback
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_scalar_reduce($s, $dontFallback = false)
- {
- if (self::useNewSodiumAPI() && !$dontFallback) {
- return sodium_crypto_core_ristretto255_scalar_reduce($s);
- }
- return ParagonIE_Sodium_Core_Ristretto255::sc_reduce($s);
- }
-
- /**
- * Runtime testing method for 32-bit platforms.
- *
- * Usage: If runtime_speed_test() returns FALSE, then our 32-bit
- * implementation is to slow to use safely without risking timeouts.
- * If this happens, install sodium from PECL to get acceptable
- * performance.
- *
- * @param int $iterations Number of multiplications to attempt
- * @param int $maxTimeout Milliseconds
- * @return bool TRUE if we're fast enough, FALSE is not
- * @throws SodiumException
- */
- public static function runtime_speed_test($iterations, $maxTimeout)
- {
- if (self::polyfill_is_fast()) {
- return true;
- }
- /** @var float $end */
- $end = 0.0;
- /** @var float $start */
- $start = microtime(true);
- /** @var ParagonIE_Sodium_Core32_Int64 $a */
- $a = ParagonIE_Sodium_Core32_Int64::fromInt(random_int(3, 1 << 16));
- for ($i = 0; $i < $iterations; ++$i) {
- /** @var ParagonIE_Sodium_Core32_Int64 $b */
- $b = ParagonIE_Sodium_Core32_Int64::fromInt(random_int(3, 1 << 16));
- $a->mulInt64($b);
- }
- /** @var float $end */
- $end = microtime(true);
- /** @var int $diff */
- $diff = (int) ceil(($end - $start) * 1000);
- return $diff < $maxTimeout;
- }
-
- /**
- * Add two numbers (little-endian unsigned), storing the value in the first
- * parameter.
- *
- * This mutates $val.
- *
- * @param string $val
- * @param string $addv
- * @return void
- * @throws SodiumException
- */
- public static function sub(&$val, $addv)
- {
- $val_len = ParagonIE_Sodium_Core_Util::strlen($val);
- $addv_len = ParagonIE_Sodium_Core_Util::strlen($addv);
- if ($val_len !== $addv_len) {
- throw new SodiumException('values must have the same length');
- }
- $A = ParagonIE_Sodium_Core_Util::stringToIntArray($val);
- $B = ParagonIE_Sodium_Core_Util::stringToIntArray($addv);
-
- $c = 0;
- for ($i = 0; $i < $val_len; $i++) {
- $c = ($A[$i] - $B[$i] - $c);
- $A[$i] = ($c & 0xff);
- $c = ($c >> 8) & 1;
- }
- $val = ParagonIE_Sodium_Core_Util::intArrayToString($A);
- }
-
- /**
- * This emulates libsodium's version_string() function, except ours is
- * prefixed with 'polyfill-'.
- *
- * @return string
- * @psalm-suppress MixedInferredReturnType
- * @psalm-suppress UndefinedFunction
- */
- public static function version_string()
- {
- if (self::useNewSodiumAPI()) {
- return (string) sodium_version_string();
- }
- if (self::use_fallback('version_string')) {
- return (string) call_user_func('\\Sodium\\version_string');
- }
- return (string) self::VERSION_STRING;
- }
-
- /**
- * Should we use the libsodium core function instead?
- * This is always a good idea, if it's available. (Unless we're in the
- * middle of running our unit test suite.)
- *
- * If ext/libsodium is available, use it. Return TRUE.
- * Otherwise, we have to use the code provided herein. Return FALSE.
- *
- * @param string $sodium_func_name
- *
- * @return bool
- */
- protected static function use_fallback($sodium_func_name = '')
- {
- static $res = null;
- if ($res === null) {
- $res = extension_loaded('libsodium') && PHP_VERSION_ID >= 50300;
- }
- if ($res === false) {
- // No libsodium installed
- return false;
- }
- if (self::$disableFallbackForUnitTests) {
- // Don't fallback. Use the PHP implementation.
- return false;
- }
- if (!empty($sodium_func_name)) {
- return is_callable('\\Sodium\\' . $sodium_func_name);
- }
- return true;
- }
-
- /**
- * Libsodium as implemented in PHP 7.2
- * and/or ext/sodium (via PECL)
- *
- * @ref https://wiki.php.net/rfc/libsodium
- * @return bool
- */
- protected static function useNewSodiumAPI()
- {
- static $res = null;
- if ($res === null) {
- $res = PHP_VERSION_ID >= 70000 && extension_loaded('sodium');
- }
- if (self::$disableFallbackForUnitTests) {
- // Don't fallback. Use the PHP implementation.
- return false;
- }
- return (bool) $res;
- }
-}
+<?php + +/** + * Libsodium compatibility layer + * + * This is the only class you should be interfacing with, as a user of + * sodium_compat. + * + * If the PHP extension for libsodium is installed, it will always use that + * instead of our implementations. You get better performance and stronger + * guarantees against side-channels that way. + * + * However, if your users don't have the PHP extension installed, we offer a + * compatible interface here. It will give you the correct results as if the + * PHP extension was installed. It won't be as fast, of course. + * + * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * + * * + * Until audited, this is probably not safe to use! DANGER WILL ROBINSON * + * * + * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * + */ + +if (class_exists('ParagonIE_Sodium_Compat', false)) { + return; +} + +class ParagonIE_Sodium_Compat +{ + /** + * This parameter prevents the use of the PECL extension. + * It should only be used for unit testing. + * + * @var bool + */ + public static $disableFallbackForUnitTests = false; + + /** + * Use fast multiplication rather than our constant-time multiplication + * implementation. Can be enabled at runtime. Only enable this if you + * are absolutely certain that there is no timing leak on your platform. + * + * @var bool + */ + public static $fastMult = false; + + const LIBRARY_MAJOR_VERSION = 9; + const LIBRARY_MINOR_VERSION = 1; + const LIBRARY_VERSION_MAJOR = 9; + const LIBRARY_VERSION_MINOR = 1; + const VERSION_STRING = 'polyfill-1.0.8'; + + // From libsodium + const BASE64_VARIANT_ORIGINAL = 1; + const BASE64_VARIANT_ORIGINAL_NO_PADDING = 3; + const BASE64_VARIANT_URLSAFE = 5; + const BASE64_VARIANT_URLSAFE_NO_PADDING = 7; + const CRYPTO_AEAD_AES256GCM_KEYBYTES = 32; + const CRYPTO_AEAD_AES256GCM_NSECBYTES = 0; + const CRYPTO_AEAD_AES256GCM_NPUBBYTES = 12; + const CRYPTO_AEAD_AES256GCM_ABYTES = 16; + const CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES = 32; + const CRYPTO_AEAD_CHACHA20POLY1305_NSECBYTES = 0; + const CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES = 8; + const CRYPTO_AEAD_CHACHA20POLY1305_ABYTES = 16; + const CRYPTO_AEAD_CHACHA20POLY1305_IETF_KEYBYTES = 32; + const CRYPTO_AEAD_CHACHA20POLY1305_IETF_NSECBYTES = 0; + const CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES = 12; + const CRYPTO_AEAD_CHACHA20POLY1305_IETF_ABYTES = 16; + const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES = 32; + const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NSECBYTES = 0; + const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES = 24; + const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_ABYTES = 16; + const CRYPTO_AUTH_BYTES = 32; + const CRYPTO_AUTH_KEYBYTES = 32; + const CRYPTO_BOX_SEALBYTES = 16; + const CRYPTO_BOX_SECRETKEYBYTES = 32; + const CRYPTO_BOX_PUBLICKEYBYTES = 32; + const CRYPTO_BOX_KEYPAIRBYTES = 64; + const CRYPTO_BOX_MACBYTES = 16; + const CRYPTO_BOX_NONCEBYTES = 24; + const CRYPTO_BOX_SEEDBYTES = 32; + const CRYPTO_CORE_RISTRETTO255_BYTES = 32; + const CRYPTO_CORE_RISTRETTO255_SCALARBYTES = 32; + const CRYPTO_CORE_RISTRETTO255_HASHBYTES = 64; + const CRYPTO_CORE_RISTRETTO255_NONREDUCEDSCALARBYTES = 64; + const CRYPTO_KDF_BYTES_MIN = 16; + const CRYPTO_KDF_BYTES_MAX = 64; + const CRYPTO_KDF_CONTEXTBYTES = 8; + const CRYPTO_KDF_KEYBYTES = 32; + const CRYPTO_KX_BYTES = 32; + const CRYPTO_KX_PRIMITIVE = 'x25519blake2b'; + const CRYPTO_KX_SEEDBYTES = 32; + const CRYPTO_KX_KEYPAIRBYTES = 64; + const CRYPTO_KX_PUBLICKEYBYTES = 32; + const CRYPTO_KX_SECRETKEYBYTES = 32; + const CRYPTO_KX_SESSIONKEYBYTES = 32; + const CRYPTO_GENERICHASH_BYTES = 32; + const CRYPTO_GENERICHASH_BYTES_MIN = 16; + const CRYPTO_GENERICHASH_BYTES_MAX = 64; + const CRYPTO_GENERICHASH_KEYBYTES = 32; + const CRYPTO_GENERICHASH_KEYBYTES_MIN = 16; + const CRYPTO_GENERICHASH_KEYBYTES_MAX = 64; + const CRYPTO_PWHASH_SALTBYTES = 16; + const CRYPTO_PWHASH_STRPREFIX = '$argon2id$'; + const CRYPTO_PWHASH_ALG_ARGON2I13 = 1; + const CRYPTO_PWHASH_ALG_ARGON2ID13 = 2; + const CRYPTO_PWHASH_MEMLIMIT_INTERACTIVE = 33554432; + const CRYPTO_PWHASH_OPSLIMIT_INTERACTIVE = 4; + const CRYPTO_PWHASH_MEMLIMIT_MODERATE = 134217728; + const CRYPTO_PWHASH_OPSLIMIT_MODERATE = 6; + const CRYPTO_PWHASH_MEMLIMIT_SENSITIVE = 536870912; + const CRYPTO_PWHASH_OPSLIMIT_SENSITIVE = 8; + const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_SALTBYTES = 32; + const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_STRPREFIX = '$7$'; + const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_OPSLIMIT_INTERACTIVE = 534288; + const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_MEMLIMIT_INTERACTIVE = 16777216; + const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_OPSLIMIT_SENSITIVE = 33554432; + const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_MEMLIMIT_SENSITIVE = 1073741824; + const CRYPTO_SCALARMULT_BYTES = 32; + const CRYPTO_SCALARMULT_SCALARBYTES = 32; + const CRYPTO_SCALARMULT_RISTRETTO255_BYTES = 32; + const CRYPTO_SCALARMULT_RISTRETTO255_SCALARBYTES = 32; + const CRYPTO_SHORTHASH_BYTES = 8; + const CRYPTO_SHORTHASH_KEYBYTES = 16; + const CRYPTO_SECRETBOX_KEYBYTES = 32; + const CRYPTO_SECRETBOX_MACBYTES = 16; + const CRYPTO_SECRETBOX_NONCEBYTES = 24; + const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_ABYTES = 17; + const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES = 24; + const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_KEYBYTES = 32; + const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_PUSH = 0; + const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_PULL = 1; + const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_REKEY = 2; + const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_FINAL = 3; + const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_MESSAGEBYTES_MAX = 0x3fffffff80; + const CRYPTO_SIGN_BYTES = 64; + const CRYPTO_SIGN_SEEDBYTES = 32; + const CRYPTO_SIGN_PUBLICKEYBYTES = 32; + const CRYPTO_SIGN_SECRETKEYBYTES = 64; + const CRYPTO_SIGN_KEYPAIRBYTES = 96; + const CRYPTO_STREAM_KEYBYTES = 32; + const CRYPTO_STREAM_NONCEBYTES = 24; + const CRYPTO_STREAM_XCHACHA20_KEYBYTES = 32; + const CRYPTO_STREAM_XCHACHA20_NONCEBYTES = 24; + + /** + * Add two numbers (little-endian unsigned), storing the value in the first + * parameter. + * + * This mutates $val. + * + * @param string $val + * @param string $addv + * @return void + * @throws SodiumException + */ + public static function add(&$val, $addv) + { + $val_len = ParagonIE_Sodium_Core_Util::strlen($val); + $addv_len = ParagonIE_Sodium_Core_Util::strlen($addv); + if ($val_len !== $addv_len) { + throw new SodiumException('values must have the same length'); + } + $A = ParagonIE_Sodium_Core_Util::stringToIntArray($val); + $B = ParagonIE_Sodium_Core_Util::stringToIntArray($addv); + + $c = 0; + for ($i = 0; $i < $val_len; $i++) { + $c += ($A[$i] + $B[$i]); + $A[$i] = ($c & 0xff); + $c >>= 8; + } + $val = ParagonIE_Sodium_Core_Util::intArrayToString($A); + } + + /** + * @param string $encoded + * @param int $variant + * @param string $ignore + * @return string + * @throws SodiumException + */ + public static function base642bin($encoded, $variant, $ignore = '') + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($encoded, 'string', 1); + + /** @var string $encoded */ + $encoded = (string) $encoded; + if (ParagonIE_Sodium_Core_Util::strlen($encoded) === 0) { + return ''; + } + + // Just strip before decoding + if (!empty($ignore)) { + $encoded = str_replace($ignore, '', $encoded); + } + + try { + switch ($variant) { + case self::BASE64_VARIANT_ORIGINAL: + return ParagonIE_Sodium_Core_Base64_Original::decode($encoded, true); + case self::BASE64_VARIANT_ORIGINAL_NO_PADDING: + return ParagonIE_Sodium_Core_Base64_Original::decode($encoded, false); + case self::BASE64_VARIANT_URLSAFE: + return ParagonIE_Sodium_Core_Base64_UrlSafe::decode($encoded, true); + case self::BASE64_VARIANT_URLSAFE_NO_PADDING: + return ParagonIE_Sodium_Core_Base64_UrlSafe::decode($encoded, false); + default: + throw new SodiumException('invalid base64 variant identifier'); + } + } catch (Exception $ex) { + if ($ex instanceof SodiumException) { + throw $ex; + } + throw new SodiumException('invalid base64 string'); + } + } + + /** + * @param string $decoded + * @param int $variant + * @return string + * @throws SodiumException + */ + public static function bin2base64($decoded, $variant) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($decoded, 'string', 1); + /** @var string $decoded */ + $decoded = (string) $decoded; + if (ParagonIE_Sodium_Core_Util::strlen($decoded) === 0) { + return ''; + } + + switch ($variant) { + case self::BASE64_VARIANT_ORIGINAL: + return ParagonIE_Sodium_Core_Base64_Original::encode($decoded); + case self::BASE64_VARIANT_ORIGINAL_NO_PADDING: + return ParagonIE_Sodium_Core_Base64_Original::encodeUnpadded($decoded); + case self::BASE64_VARIANT_URLSAFE: + return ParagonIE_Sodium_Core_Base64_UrlSafe::encode($decoded); + case self::BASE64_VARIANT_URLSAFE_NO_PADDING: + return ParagonIE_Sodium_Core_Base64_UrlSafe::encodeUnpadded($decoded); + default: + throw new SodiumException('invalid base64 variant identifier'); + } + } + + /** + * Cache-timing-safe implementation of bin2hex(). + * + * @param string $string A string (probably raw binary) + * @return string A hexadecimal-encoded string + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function bin2hex($string) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($string, 'string', 1); + + if (self::useNewSodiumAPI()) { + return (string) sodium_bin2hex($string); + } + if (self::use_fallback('bin2hex')) { + return (string) call_user_func('\\Sodium\\bin2hex', $string); + } + return ParagonIE_Sodium_Core_Util::bin2hex($string); + } + + /** + * Compare two strings, in constant-time. + * Compared to memcmp(), compare() is more useful for sorting. + * + * @param string $left The left operand; must be a string + * @param string $right The right operand; must be a string + * @return int If < 0 if the left operand is less than the right + * If = 0 if both strings are equal + * If > 0 if the right operand is less than the left + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function compare($left, $right) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($left, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($right, 'string', 2); + + if (self::useNewSodiumAPI()) { + return (int) sodium_compare($left, $right); + } + if (self::use_fallback('compare')) { + return (int) call_user_func('\\Sodium\\compare', $left, $right); + } + return ParagonIE_Sodium_Core_Util::compare($left, $right); + } + + /** + * Is AES-256-GCM even available to use? + * + * @return bool + * @psalm-suppress UndefinedFunction + * @psalm-suppress MixedInferredReturnType + * @psalm-suppress MixedReturnStatement + */ + public static function crypto_aead_aes256gcm_is_available() + { + if (self::useNewSodiumAPI()) { + return sodium_crypto_aead_aes256gcm_is_available(); + } + if (self::use_fallback('crypto_aead_aes256gcm_is_available')) { + return call_user_func('\\Sodium\\crypto_aead_aes256gcm_is_available'); + } + if (PHP_VERSION_ID < 70100) { + // OpenSSL doesn't support AEAD before 7.1.0 + return false; + } + if (!is_callable('openssl_encrypt') || !is_callable('openssl_decrypt')) { + // OpenSSL isn't installed + return false; + } + return (bool) in_array('aes-256-gcm', openssl_get_cipher_methods()); + } + + /** + * Authenticated Encryption with Associated Data: Decryption + * + * Algorithm: + * AES-256-GCM + * + * This mode uses a 64-bit random nonce with a 64-bit counter. + * IETF mode uses a 96-bit random nonce with a 32-bit counter. + * + * @param string $ciphertext Encrypted message (with Poly1305 MAC appended) + * @param string $assocData Authenticated Associated Data (unencrypted) + * @param string $nonce Number to be used only Once; must be 8 bytes + * @param string $key Encryption key + * + * @return string|bool The original plaintext message + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedInferredReturnType + * @psalm-suppress MixedReturnStatement + */ + public static function crypto_aead_aes256gcm_decrypt( + $ciphertext = '', + $assocData = '', + $nonce = '', + $key = '' + ) { + if (!self::crypto_aead_aes256gcm_is_available()) { + throw new SodiumException('AES-256-GCM is not available'); + } + ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_AES256GCM_NPUBBYTES) { + throw new SodiumException('Nonce must be CRYPTO_AEAD_AES256GCM_NPUBBYTES long'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_AES256GCM_KEYBYTES) { + throw new SodiumException('Key must be CRYPTO_AEAD_AES256GCM_KEYBYTES long'); + } + if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_AES256GCM_ABYTES) { + throw new SodiumException('Message must be at least CRYPTO_AEAD_AES256GCM_ABYTES long'); + } + if (!is_callable('openssl_decrypt')) { + throw new SodiumException('The OpenSSL extension is not installed, or openssl_decrypt() is not available'); + } + + /** @var string $ctext */ + $ctext = ParagonIE_Sodium_Core_Util::substr($ciphertext, 0, -self::CRYPTO_AEAD_AES256GCM_ABYTES); + /** @var string $authTag */ + $authTag = ParagonIE_Sodium_Core_Util::substr($ciphertext, -self::CRYPTO_AEAD_AES256GCM_ABYTES, 16); + return openssl_decrypt( + $ctext, + 'aes-256-gcm', + $key, + OPENSSL_RAW_DATA, + $nonce, + $authTag, + $assocData + ); + } + + /** + * Authenticated Encryption with Associated Data: Encryption + * + * Algorithm: + * AES-256-GCM + * + * @param string $plaintext Message to be encrypted + * @param string $assocData Authenticated Associated Data (unencrypted) + * @param string $nonce Number to be used only Once; must be 8 bytes + * @param string $key Encryption key + * + * @return string Ciphertext with a 16-byte GCM message + * authentication code appended + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_aead_aes256gcm_encrypt( + $plaintext = '', + $assocData = '', + $nonce = '', + $key = '' + ) { + if (!self::crypto_aead_aes256gcm_is_available()) { + throw new SodiumException('AES-256-GCM is not available'); + } + ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_AES256GCM_NPUBBYTES) { + throw new SodiumException('Nonce must be CRYPTO_AEAD_AES256GCM_NPUBBYTES long'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_AES256GCM_KEYBYTES) { + throw new SodiumException('Key must be CRYPTO_AEAD_AES256GCM_KEYBYTES long'); + } + + if (!is_callable('openssl_encrypt')) { + throw new SodiumException('The OpenSSL extension is not installed, or openssl_encrypt() is not available'); + } + + $authTag = ''; + $ciphertext = openssl_encrypt( + $plaintext, + 'aes-256-gcm', + $key, + OPENSSL_RAW_DATA, + $nonce, + $authTag, + $assocData + ); + return $ciphertext . $authTag; + } + + /** + * Return a secure random key for use with the AES-256-GCM + * symmetric AEAD interface. + * + * @return string + * @throws Exception + * @throws Error + */ + public static function crypto_aead_aes256gcm_keygen() + { + return random_bytes(self::CRYPTO_AEAD_AES256GCM_KEYBYTES); + } + + /** + * Authenticated Encryption with Associated Data: Decryption + * + * Algorithm: + * ChaCha20-Poly1305 + * + * This mode uses a 64-bit random nonce with a 64-bit counter. + * IETF mode uses a 96-bit random nonce with a 32-bit counter. + * + * @param string $ciphertext Encrypted message (with Poly1305 MAC appended) + * @param string $assocData Authenticated Associated Data (unencrypted) + * @param string $nonce Number to be used only Once; must be 8 bytes + * @param string $key Encryption key + * + * @return string The original plaintext message + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedInferredReturnType + * @psalm-suppress MixedReturnStatement + */ + public static function crypto_aead_chacha20poly1305_decrypt( + $ciphertext = '', + $assocData = '', + $nonce = '', + $key = '' + ) { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES) { + throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES long'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) { + throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long'); + } + if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_CHACHA20POLY1305_ABYTES) { + throw new SodiumException('Message must be at least CRYPTO_AEAD_CHACHA20POLY1305_ABYTES long'); + } + + if (self::useNewSodiumAPI()) { + /** + * @psalm-suppress InvalidReturnStatement + * @psalm-suppress FalsableReturnStatement + */ + return sodium_crypto_aead_chacha20poly1305_decrypt( + $ciphertext, + $assocData, + $nonce, + $key + ); + } + if (self::use_fallback('crypto_aead_chacha20poly1305_decrypt')) { + return call_user_func( + '\\Sodium\\crypto_aead_chacha20poly1305_decrypt', + $ciphertext, + $assocData, + $nonce, + $key + ); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_decrypt( + $ciphertext, + $assocData, + $nonce, + $key + ); + } + return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_decrypt( + $ciphertext, + $assocData, + $nonce, + $key + ); + } + + /** + * Authenticated Encryption with Associated Data + * + * Algorithm: + * ChaCha20-Poly1305 + * + * This mode uses a 64-bit random nonce with a 64-bit counter. + * IETF mode uses a 96-bit random nonce with a 32-bit counter. + * + * @param string $plaintext Message to be encrypted + * @param string $assocData Authenticated Associated Data (unencrypted) + * @param string $nonce Number to be used only Once; must be 8 bytes + * @param string $key Encryption key + * + * @return string Ciphertext with a 16-byte Poly1305 message + * authentication code appended + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_aead_chacha20poly1305_encrypt( + $plaintext = '', + $assocData = '', + $nonce = '', + $key = '' + ) { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES) { + throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES long'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) { + throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long'); + } + + if (self::useNewSodiumAPI()) { + return (string) sodium_crypto_aead_chacha20poly1305_encrypt( + $plaintext, + $assocData, + $nonce, + $key + ); + } + if (self::use_fallback('crypto_aead_chacha20poly1305_encrypt')) { + return (string) call_user_func( + '\\Sodium\\crypto_aead_chacha20poly1305_encrypt', + $plaintext, + $assocData, + $nonce, + $key + ); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_encrypt( + $plaintext, + $assocData, + $nonce, + $key + ); + } + return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_encrypt( + $plaintext, + $assocData, + $nonce, + $key + ); + } + + /** + * Authenticated Encryption with Associated Data: Decryption + * + * Algorithm: + * ChaCha20-Poly1305 + * + * IETF mode uses a 96-bit random nonce with a 32-bit counter. + * Regular mode uses a 64-bit random nonce with a 64-bit counter. + * + * @param string $ciphertext Encrypted message (with Poly1305 MAC appended) + * @param string $assocData Authenticated Associated Data (unencrypted) + * @param string $nonce Number to be used only Once; must be 12 bytes + * @param string $key Encryption key + * + * @return string The original plaintext message + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedInferredReturnType + * @psalm-suppress MixedReturnStatement + */ + public static function crypto_aead_chacha20poly1305_ietf_decrypt( + $ciphertext = '', + $assocData = '', + $nonce = '', + $key = '' + ) { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES) { + throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES long'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) { + throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long'); + } + if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_CHACHA20POLY1305_ABYTES) { + throw new SodiumException('Message must be at least CRYPTO_AEAD_CHACHA20POLY1305_ABYTES long'); + } + + if (self::useNewSodiumAPI()) { + /** + * @psalm-suppress InvalidReturnStatement + * @psalm-suppress FalsableReturnStatement + */ + return sodium_crypto_aead_chacha20poly1305_ietf_decrypt( + $ciphertext, + $assocData, + $nonce, + $key + ); + } + if (self::use_fallback('crypto_aead_chacha20poly1305_ietf_decrypt')) { + return call_user_func( + '\\Sodium\\crypto_aead_chacha20poly1305_ietf_decrypt', + $ciphertext, + $assocData, + $nonce, + $key + ); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_ietf_decrypt( + $ciphertext, + $assocData, + $nonce, + $key + ); + } + return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_ietf_decrypt( + $ciphertext, + $assocData, + $nonce, + $key + ); + } + + /** + * Return a secure random key for use with the ChaCha20-Poly1305 + * symmetric AEAD interface. + * + * @return string + * @throws Exception + * @throws Error + */ + public static function crypto_aead_chacha20poly1305_keygen() + { + return random_bytes(self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES); + } + + /** + * Authenticated Encryption with Associated Data + * + * Algorithm: + * ChaCha20-Poly1305 + * + * IETF mode uses a 96-bit random nonce with a 32-bit counter. + * Regular mode uses a 64-bit random nonce with a 64-bit counter. + * + * @param string $plaintext Message to be encrypted + * @param string $assocData Authenticated Associated Data (unencrypted) + * @param string $nonce Number to be used only Once; must be 8 bytes + * @param string $key Encryption key + * + * @return string Ciphertext with a 16-byte Poly1305 message + * authentication code appended + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_aead_chacha20poly1305_ietf_encrypt( + $plaintext = '', + $assocData = '', + $nonce = '', + $key = '' + ) { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1); + if (!is_null($assocData)) { + ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2); + } + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES) { + throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES long'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) { + throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long'); + } + + if (self::useNewSodiumAPI()) { + return (string) sodium_crypto_aead_chacha20poly1305_ietf_encrypt( + $plaintext, + $assocData, + $nonce, + $key + ); + } + if (self::use_fallback('crypto_aead_chacha20poly1305_ietf_encrypt')) { + return (string) call_user_func( + '\\Sodium\\crypto_aead_chacha20poly1305_ietf_encrypt', + $plaintext, + $assocData, + $nonce, + $key + ); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_ietf_encrypt( + $plaintext, + $assocData, + $nonce, + $key + ); + } + return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_ietf_encrypt( + $plaintext, + $assocData, + $nonce, + $key + ); + } + + /** + * Return a secure random key for use with the ChaCha20-Poly1305 + * symmetric AEAD interface. (IETF version) + * + * @return string + * @throws Exception + * @throws Error + */ + public static function crypto_aead_chacha20poly1305_ietf_keygen() + { + return random_bytes(self::CRYPTO_AEAD_CHACHA20POLY1305_IETF_KEYBYTES); + } + + /** + * Authenticated Encryption with Associated Data: Decryption + * + * Algorithm: + * XChaCha20-Poly1305 + * + * This mode uses a 64-bit random nonce with a 64-bit counter. + * IETF mode uses a 96-bit random nonce with a 32-bit counter. + * + * @param string $ciphertext Encrypted message (with Poly1305 MAC appended) + * @param string $assocData Authenticated Associated Data (unencrypted) + * @param string $nonce Number to be used only Once; must be 8 bytes + * @param string $key Encryption key + * @param bool $dontFallback Don't fallback to ext/sodium + * + * @return string|bool The original plaintext message + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_aead_xchacha20poly1305_ietf_decrypt( + $ciphertext = '', + $assocData = '', + $nonce = '', + $key = '', + $dontFallback = false + ) { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1); + if (!is_null($assocData)) { + ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2); + } else { + $assocData = ''; + } + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES) { + throw new SodiumException('Nonce must be CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES long'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES) { + throw new SodiumException('Key must be CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES long'); + } + if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_ABYTES) { + throw new SodiumException('Message must be at least CRYPTO_AEAD_XCHACHA20POLY1305_IETF_ABYTES long'); + } + if (self::useNewSodiumAPI() && !$dontFallback) { + if (is_callable('sodium_crypto_aead_xchacha20poly1305_ietf_decrypt')) { + return sodium_crypto_aead_xchacha20poly1305_ietf_decrypt( + $ciphertext, + $assocData, + $nonce, + $key + ); + } + } + + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::aead_xchacha20poly1305_ietf_decrypt( + $ciphertext, + $assocData, + $nonce, + $key + ); + } + return ParagonIE_Sodium_Crypto::aead_xchacha20poly1305_ietf_decrypt( + $ciphertext, + $assocData, + $nonce, + $key + ); + } + + /** + * Authenticated Encryption with Associated Data + * + * Algorithm: + * XChaCha20-Poly1305 + * + * This mode uses a 64-bit random nonce with a 64-bit counter. + * IETF mode uses a 96-bit random nonce with a 32-bit counter. + * + * @param string $plaintext Message to be encrypted + * @param string $assocData Authenticated Associated Data (unencrypted) + * @param string $nonce Number to be used only Once; must be 8 bytes + * @param string $key Encryption key + * @param bool $dontFallback Don't fallback to ext/sodium + * + * @return string Ciphertext with a 16-byte Poly1305 message + * authentication code appended + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_aead_xchacha20poly1305_ietf_encrypt( + $plaintext = '', + $assocData = '', + $nonce = '', + $key = '', + $dontFallback = false + ) { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1); + if (!is_null($assocData)) { + ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2); + } else { + $assocData = ''; + } + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES) { + throw new SodiumException('Nonce must be CRYPTO_AEAD_XCHACHA20POLY1305_NPUBBYTES long'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES) { + throw new SodiumException('Key must be CRYPTO_AEAD_XCHACHA20POLY1305_KEYBYTES long'); + } + if (self::useNewSodiumAPI() && !$dontFallback) { + if (is_callable('sodium_crypto_aead_xchacha20poly1305_ietf_encrypt')) { + return sodium_crypto_aead_xchacha20poly1305_ietf_encrypt( + $plaintext, + $assocData, + $nonce, + $key + ); + } + } + + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::aead_xchacha20poly1305_ietf_encrypt( + $plaintext, + $assocData, + $nonce, + $key + ); + } + return ParagonIE_Sodium_Crypto::aead_xchacha20poly1305_ietf_encrypt( + $plaintext, + $assocData, + $nonce, + $key + ); + } + + /** + * Return a secure random key for use with the XChaCha20-Poly1305 + * symmetric AEAD interface. + * + * @return string + * @throws Exception + * @throws Error + */ + public static function crypto_aead_xchacha20poly1305_ietf_keygen() + { + return random_bytes(self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES); + } + + /** + * Authenticate a message. Uses symmetric-key cryptography. + * + * Algorithm: + * HMAC-SHA512-256. Which is HMAC-SHA-512 truncated to 256 bits. + * Not to be confused with HMAC-SHA-512/256 which would use the + * SHA-512/256 hash function (uses different initial parameters + * but still truncates to 256 bits to sidestep length-extension + * attacks). + * + * @param string $message Message to be authenticated + * @param string $key Symmetric authentication key + * @return string Message authentication code + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_auth($message, $key) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 2); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AUTH_KEYBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_AUTH_KEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return (string) sodium_crypto_auth($message, $key); + } + if (self::use_fallback('crypto_auth')) { + return (string) call_user_func('\\Sodium\\crypto_auth', $message, $key); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::auth($message, $key); + } + return ParagonIE_Sodium_Crypto::auth($message, $key); + } + + /** + * @return string + * @throws Exception + * @throws Error + */ + public static function crypto_auth_keygen() + { + return random_bytes(self::CRYPTO_AUTH_KEYBYTES); + } + + /** + * Verify the MAC of a message previously authenticated with crypto_auth. + * + * @param string $mac Message authentication code + * @param string $message Message whose authenticity you are attempting to + * verify (with a given MAC and key) + * @param string $key Symmetric authentication key + * @return bool TRUE if authenticated, FALSE otherwise + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_auth_verify($mac, $message, $key) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($mac, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($mac) !== self::CRYPTO_AUTH_BYTES) { + throw new SodiumException('Argument 1 must be CRYPTO_AUTH_BYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AUTH_KEYBYTES) { + throw new SodiumException('Argument 3 must be CRYPTO_AUTH_KEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return (bool) sodium_crypto_auth_verify($mac, $message, $key); + } + if (self::use_fallback('crypto_auth_verify')) { + return (bool) call_user_func('\\Sodium\\crypto_auth_verify', $mac, $message, $key); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::auth_verify($mac, $message, $key); + } + return ParagonIE_Sodium_Crypto::auth_verify($mac, $message, $key); + } + + /** + * Authenticated asymmetric-key encryption. Both the sender and recipient + * may decrypt messages. + * + * Algorithm: X25519-XSalsa20-Poly1305. + * X25519: Elliptic-Curve Diffie Hellman over Curve25519. + * XSalsa20: Extended-nonce variant of salsa20. + * Poyl1305: Polynomial MAC for one-time message authentication. + * + * @param string $plaintext The message to be encrypted + * @param string $nonce A Number to only be used Once; must be 24 bytes + * @param string $keypair Your secret key and your recipient's public key + * @return string Ciphertext with 16-byte Poly1305 MAC + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_box($plaintext, $nonce, $keypair) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 3); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_BOX_NONCEBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_BOX_NONCEBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) { + throw new SodiumException('Argument 3 must be CRYPTO_BOX_KEYPAIRBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return (string) sodium_crypto_box($plaintext, $nonce, $keypair); + } + if (self::use_fallback('crypto_box')) { + return (string) call_user_func('\\Sodium\\crypto_box', $plaintext, $nonce, $keypair); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::box($plaintext, $nonce, $keypair); + } + return ParagonIE_Sodium_Crypto::box($plaintext, $nonce, $keypair); + } + + /** + * Anonymous public-key encryption. Only the recipient may decrypt messages. + * + * Algorithm: X25519-XSalsa20-Poly1305, as with crypto_box. + * The sender's X25519 keypair is ephemeral. + * Nonce is generated from the BLAKE2b hash of both public keys. + * + * This provides ciphertext integrity. + * + * @param string $plaintext Message to be sealed + * @param string $publicKey Your recipient's public key + * @return string Sealed message that only your recipient can + * decrypt + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_box_seal($plaintext, $publicKey) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_BOX_PUBLICKEYBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return (string) sodium_crypto_box_seal($plaintext, $publicKey); + } + if (self::use_fallback('crypto_box_seal')) { + return (string) call_user_func('\\Sodium\\crypto_box_seal', $plaintext, $publicKey); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::box_seal($plaintext, $publicKey); + } + return ParagonIE_Sodium_Crypto::box_seal($plaintext, $publicKey); + } + + /** + * Opens a message encrypted with crypto_box_seal(). Requires + * the recipient's keypair (sk || pk) to decrypt successfully. + * + * This validates ciphertext integrity. + * + * @param string $ciphertext Sealed message to be opened + * @param string $keypair Your crypto_box keypair + * @return string The original plaintext message + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedInferredReturnType + * @psalm-suppress MixedReturnStatement + */ + public static function crypto_box_seal_open($ciphertext, $keypair) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 2); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_BOX_KEYPAIRBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + /** + * @psalm-suppress InvalidReturnStatement + * @psalm-suppress FalsableReturnStatement + */ + return sodium_crypto_box_seal_open($ciphertext, $keypair); + } + if (self::use_fallback('crypto_box_seal_open')) { + return call_user_func('\\Sodium\\crypto_box_seal_open', $ciphertext, $keypair); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::box_seal_open($ciphertext, $keypair); + } + return ParagonIE_Sodium_Crypto::box_seal_open($ciphertext, $keypair); + } + + /** + * Generate a new random X25519 keypair. + * + * @return string A 64-byte string; the first 32 are your secret key, while + * the last 32 are your public key. crypto_box_secretkey() + * and crypto_box_publickey() exist to separate them so you + * don't accidentally get them mixed up! + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_box_keypair() + { + if (self::useNewSodiumAPI()) { + return (string) sodium_crypto_box_keypair(); + } + if (self::use_fallback('crypto_box_keypair')) { + return (string) call_user_func('\\Sodium\\crypto_box_keypair'); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::box_keypair(); + } + return ParagonIE_Sodium_Crypto::box_keypair(); + } + + /** + * Combine two keys into a keypair for use in library methods that expect + * a keypair. This doesn't necessarily have to be the same person's keys. + * + * @param string $secretKey Secret key + * @param string $publicKey Public key + * @return string Keypair + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_box_keypair_from_secretkey_and_publickey($secretKey, $publicKey) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) { + throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_BOX_PUBLICKEYBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return (string) sodium_crypto_box_keypair_from_secretkey_and_publickey($secretKey, $publicKey); + } + if (self::use_fallback('crypto_box_keypair_from_secretkey_and_publickey')) { + return (string) call_user_func('\\Sodium\\crypto_box_keypair_from_secretkey_and_publickey', $secretKey, $publicKey); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::box_keypair_from_secretkey_and_publickey($secretKey, $publicKey); + } + return ParagonIE_Sodium_Crypto::box_keypair_from_secretkey_and_publickey($secretKey, $publicKey); + } + + /** + * Decrypt a message previously encrypted with crypto_box(). + * + * @param string $ciphertext Encrypted message + * @param string $nonce Number to only be used Once; must be 24 bytes + * @param string $keypair Your secret key and the sender's public key + * @return string The original plaintext message + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedInferredReturnType + * @psalm-suppress MixedReturnStatement + */ + public static function crypto_box_open($ciphertext, $nonce, $keypair) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 3); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_BOX_MACBYTES) { + throw new SodiumException('Argument 1 must be at least CRYPTO_BOX_MACBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_BOX_NONCEBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_BOX_NONCEBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) { + throw new SodiumException('Argument 3 must be CRYPTO_BOX_KEYPAIRBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + /** + * @psalm-suppress InvalidReturnStatement + * @psalm-suppress FalsableReturnStatement + */ + return sodium_crypto_box_open($ciphertext, $nonce, $keypair); + } + if (self::use_fallback('crypto_box_open')) { + return call_user_func('\\Sodium\\crypto_box_open', $ciphertext, $nonce, $keypair); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::box_open($ciphertext, $nonce, $keypair); + } + return ParagonIE_Sodium_Crypto::box_open($ciphertext, $nonce, $keypair); + } + + /** + * Extract the public key from a crypto_box keypair. + * + * @param string $keypair Keypair containing secret and public key + * @return string Your crypto_box public key + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_box_publickey($keypair) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) { + throw new SodiumException('Argument 1 must be CRYPTO_BOX_KEYPAIRBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return (string) sodium_crypto_box_publickey($keypair); + } + if (self::use_fallback('crypto_box_publickey')) { + return (string) call_user_func('\\Sodium\\crypto_box_publickey', $keypair); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::box_publickey($keypair); + } + return ParagonIE_Sodium_Crypto::box_publickey($keypair); + } + + /** + * Calculate the X25519 public key from a given X25519 secret key. + * + * @param string $secretKey Any X25519 secret key + * @return string The corresponding X25519 public key + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_box_publickey_from_secretkey($secretKey) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) { + throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return (string) sodium_crypto_box_publickey_from_secretkey($secretKey); + } + if (self::use_fallback('crypto_box_publickey_from_secretkey')) { + return (string) call_user_func('\\Sodium\\crypto_box_publickey_from_secretkey', $secretKey); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::box_publickey_from_secretkey($secretKey); + } + return ParagonIE_Sodium_Crypto::box_publickey_from_secretkey($secretKey); + } + + /** + * Extract the secret key from a crypto_box keypair. + * + * @param string $keypair + * @return string Your crypto_box secret key + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_box_secretkey($keypair) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) { + throw new SodiumException('Argument 1 must be CRYPTO_BOX_KEYPAIRBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return (string) sodium_crypto_box_secretkey($keypair); + } + if (self::use_fallback('crypto_box_secretkey')) { + return (string) call_user_func('\\Sodium\\crypto_box_secretkey', $keypair); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::box_secretkey($keypair); + } + return ParagonIE_Sodium_Crypto::box_secretkey($keypair); + } + + /** + * Generate an X25519 keypair from a seed. + * + * @param string $seed + * @return string + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress UndefinedFunction + */ + public static function crypto_box_seed_keypair($seed) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($seed, 'string', 1); + + if (self::useNewSodiumAPI()) { + return (string) sodium_crypto_box_seed_keypair($seed); + } + if (self::use_fallback('crypto_box_seed_keypair')) { + return (string) call_user_func('\\Sodium\\crypto_box_seed_keypair', $seed); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::box_seed_keypair($seed); + } + return ParagonIE_Sodium_Crypto::box_seed_keypair($seed); + } + + /** + * Calculates a BLAKE2b hash, with an optional key. + * + * @param string $message The message to be hashed + * @param string|null $key If specified, must be a string between 16 + * and 64 bytes long + * @param int $length Output length in bytes; must be between 16 + * and 64 (default = 32) + * @return string Raw binary + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_generichash($message, $key = '', $length = self::CRYPTO_GENERICHASH_BYTES) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1); + if (is_null($key)) { + $key = ''; + } + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 3); + + /* Input validation: */ + if (!empty($key)) { + if (ParagonIE_Sodium_Core_Util::strlen($key) < self::CRYPTO_GENERICHASH_KEYBYTES_MIN) { + throw new SodiumException('Unsupported key size. Must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) > self::CRYPTO_GENERICHASH_KEYBYTES_MAX) { + throw new SodiumException('Unsupported key size. Must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes long.'); + } + } + + if (self::useNewSodiumAPI()) { + return (string) sodium_crypto_generichash($message, $key, $length); + } + if (self::use_fallback('crypto_generichash')) { + return (string) call_user_func('\\Sodium\\crypto_generichash', $message, $key, $length); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::generichash($message, $key, $length); + } + return ParagonIE_Sodium_Crypto::generichash($message, $key, $length); + } + + /** + * Get the final BLAKE2b hash output for a given context. + * + * @param string $ctx BLAKE2 hashing context. Generated by crypto_generichash_init(). + * @param int $length Hash output size. + * @return string Final BLAKE2b hash. + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress ReferenceConstraintViolation + * @psalm-suppress ConflictingReferenceConstraint + */ + public static function crypto_generichash_final(&$ctx, $length = self::CRYPTO_GENERICHASH_BYTES) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($ctx, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 2); + + if (self::useNewSodiumAPI()) { + return sodium_crypto_generichash_final($ctx, $length); + } + if (self::use_fallback('crypto_generichash_final')) { + $func = '\\Sodium\\crypto_generichash_final'; + return (string) $func($ctx, $length); + } + if ($length < 1) { + try { + self::memzero($ctx); + } catch (SodiumException $ex) { + unset($ctx); + } + return ''; + } + if (PHP_INT_SIZE === 4) { + $result = ParagonIE_Sodium_Crypto32::generichash_final($ctx, $length); + } else { + $result = ParagonIE_Sodium_Crypto::generichash_final($ctx, $length); + } + try { + self::memzero($ctx); + } catch (SodiumException $ex) { + unset($ctx); + } + return $result; + } + + /** + * Initialize a BLAKE2b hashing context, for use in a streaming interface. + * + * @param string|null $key If specified must be a string between 16 and 64 bytes + * @param int $length The size of the desired hash output + * @return string A BLAKE2 hashing context, encoded as a string + * (To be 100% compatible with ext/libsodium) + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_generichash_init($key = '', $length = self::CRYPTO_GENERICHASH_BYTES) + { + /* Type checks: */ + if (is_null($key)) { + $key = ''; + } + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 2); + + /* Input validation: */ + if (!empty($key)) { + if (ParagonIE_Sodium_Core_Util::strlen($key) < self::CRYPTO_GENERICHASH_KEYBYTES_MIN) { + throw new SodiumException('Unsupported key size. Must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) > self::CRYPTO_GENERICHASH_KEYBYTES_MAX) { + throw new SodiumException('Unsupported key size. Must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes long.'); + } + } + + if (self::useNewSodiumAPI()) { + return sodium_crypto_generichash_init($key, $length); + } + if (self::use_fallback('crypto_generichash_init')) { + return (string) call_user_func('\\Sodium\\crypto_generichash_init', $key, $length); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::generichash_init($key, $length); + } + return ParagonIE_Sodium_Crypto::generichash_init($key, $length); + } + + /** + * Initialize a BLAKE2b hashing context, for use in a streaming interface. + * + * @param string|null $key If specified must be a string between 16 and 64 bytes + * @param int $length The size of the desired hash output + * @param string $salt Salt (up to 16 bytes) + * @param string $personal Personalization string (up to 16 bytes) + * @return string A BLAKE2 hashing context, encoded as a string + * (To be 100% compatible with ext/libsodium) + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_generichash_init_salt_personal( + $key = '', + $length = self::CRYPTO_GENERICHASH_BYTES, + $salt = '', + $personal = '' + ) { + /* Type checks: */ + if (is_null($key)) { + $key = ''; + } + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($salt, 'string', 3); + ParagonIE_Sodium_Core_Util::declareScalarType($personal, 'string', 4); + $salt = str_pad($salt, 16, "\0", STR_PAD_RIGHT); + $personal = str_pad($personal, 16, "\0", STR_PAD_RIGHT); + + /* Input validation: */ + if (!empty($key)) { + /* + if (ParagonIE_Sodium_Core_Util::strlen($key) < self::CRYPTO_GENERICHASH_KEYBYTES_MIN) { + throw new SodiumException('Unsupported key size. Must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes long.'); + } + */ + if (ParagonIE_Sodium_Core_Util::strlen($key) > self::CRYPTO_GENERICHASH_KEYBYTES_MAX) { + throw new SodiumException('Unsupported key size. Must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes long.'); + } + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::generichash_init_salt_personal($key, $length, $salt, $personal); + } + return ParagonIE_Sodium_Crypto::generichash_init_salt_personal($key, $length, $salt, $personal); + } + + /** + * Update a BLAKE2b hashing context with additional data. + * + * @param string $ctx BLAKE2 hashing context. Generated by crypto_generichash_init(). + * $ctx is passed by reference and gets updated in-place. + * @param-out string $ctx + * @param string $message The message to append to the existing hash state. + * @return void + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress ReferenceConstraintViolation + */ + public static function crypto_generichash_update(&$ctx, $message) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($ctx, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 2); + + if (self::useNewSodiumAPI()) { + sodium_crypto_generichash_update($ctx, $message); + return; + } + if (self::use_fallback('crypto_generichash_update')) { + $func = '\\Sodium\\crypto_generichash_update'; + $func($ctx, $message); + return; + } + if (PHP_INT_SIZE === 4) { + $ctx = ParagonIE_Sodium_Crypto32::generichash_update($ctx, $message); + } else { + $ctx = ParagonIE_Sodium_Crypto::generichash_update($ctx, $message); + } + } + + /** + * @return string + * @throws Exception + * @throws Error + */ + public static function crypto_generichash_keygen() + { + return random_bytes(self::CRYPTO_GENERICHASH_KEYBYTES); + } + + /** + * @param int $subkey_len + * @param int $subkey_id + * @param string $context + * @param string $key + * @return string + * @throws SodiumException + */ + public static function crypto_kdf_derive_from_key( + $subkey_len, + $subkey_id, + $context, + $key + ) { + ParagonIE_Sodium_Core_Util::declareScalarType($subkey_len, 'int', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($subkey_id, 'int', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($context, 'string', 3); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4); + $subkey_id = (int) $subkey_id; + $subkey_len = (int) $subkey_len; + $context = (string) $context; + $key = (string) $key; + + if ($subkey_len < self::CRYPTO_KDF_BYTES_MIN) { + throw new SodiumException('subkey cannot be smaller than SODIUM_CRYPTO_KDF_BYTES_MIN'); + } + if ($subkey_len > self::CRYPTO_KDF_BYTES_MAX) { + throw new SodiumException('subkey cannot be larger than SODIUM_CRYPTO_KDF_BYTES_MAX'); + } + if ($subkey_id < 0) { + throw new SodiumException('subkey_id cannot be negative'); + } + if (ParagonIE_Sodium_Core_Util::strlen($context) !== self::CRYPTO_KDF_CONTEXTBYTES) { + throw new SodiumException('context should be SODIUM_CRYPTO_KDF_CONTEXTBYTES bytes'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_KDF_KEYBYTES) { + throw new SodiumException('key should be SODIUM_CRYPTO_KDF_KEYBYTES bytes'); + } + + $salt = ParagonIE_Sodium_Core_Util::store64_le($subkey_id); + $state = self::crypto_generichash_init_salt_personal( + $key, + $subkey_len, + $salt, + $context + ); + return self::crypto_generichash_final($state, $subkey_len); + } + + /** + * @return string + * @throws Exception + * @throws Error + */ + public static function crypto_kdf_keygen() + { + return random_bytes(self::CRYPTO_KDF_KEYBYTES); + } + + /** + * Perform a key exchange, between a designated client and a server. + * + * Typically, you would designate one machine to be the client and the + * other to be the server. The first two keys are what you'd expect for + * scalarmult() below, but the latter two public keys don't swap places. + * + * | ALICE | BOB | + * | Client | Server | + * |--------------------------------|-------------------------------------| + * | shared = crypto_kx( | shared = crypto_kx( | + * | alice_sk, | bob_sk, | <- contextual + * | bob_pk, | alice_pk, | <- contextual + * | alice_pk, | alice_pk, | <----- static + * | bob_pk | bob_pk | <----- static + * | ) | ) | + * + * They are used along with the scalarmult product to generate a 256-bit + * BLAKE2b hash unique to the client and server keys. + * + * @param string $my_secret + * @param string $their_public + * @param string $client_public + * @param string $server_public + * @param bool $dontFallback + * @return string + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_kx($my_secret, $their_public, $client_public, $server_public, $dontFallback = false) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($my_secret, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($their_public, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($client_public, 'string', 3); + ParagonIE_Sodium_Core_Util::declareScalarType($server_public, 'string', 4); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($my_secret) !== self::CRYPTO_BOX_SECRETKEYBYTES) { + throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($their_public) !== self::CRYPTO_BOX_PUBLICKEYBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($client_public) !== self::CRYPTO_BOX_PUBLICKEYBYTES) { + throw new SodiumException('Argument 3 must be CRYPTO_BOX_PUBLICKEYBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($server_public) !== self::CRYPTO_BOX_PUBLICKEYBYTES) { + throw new SodiumException('Argument 4 must be CRYPTO_BOX_PUBLICKEYBYTES long.'); + } + + if (self::useNewSodiumAPI() && !$dontFallback) { + if (is_callable('sodium_crypto_kx')) { + return (string) sodium_crypto_kx( + $my_secret, + $their_public, + $client_public, + $server_public + ); + } + } + if (self::use_fallback('crypto_kx')) { + return (string) call_user_func( + '\\Sodium\\crypto_kx', + $my_secret, + $their_public, + $client_public, + $server_public + ); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::keyExchange( + $my_secret, + $their_public, + $client_public, + $server_public + ); + } + return ParagonIE_Sodium_Crypto::keyExchange( + $my_secret, + $their_public, + $client_public, + $server_public + ); + } + + /** + * @param string $seed + * @return string + * @throws SodiumException + */ + public static function crypto_kx_seed_keypair($seed) + { + ParagonIE_Sodium_Core_Util::declareScalarType($seed, 'string', 1); + + $seed = (string) $seed; + + if (ParagonIE_Sodium_Core_Util::strlen($seed) !== self::CRYPTO_KX_SEEDBYTES) { + throw new SodiumException('seed must be SODIUM_CRYPTO_KX_SEEDBYTES bytes'); + } + + $sk = self::crypto_generichash($seed, '', self::CRYPTO_KX_SECRETKEYBYTES); + $pk = self::crypto_scalarmult_base($sk); + return $sk . $pk; + } + + /** + * @return string + * @throws Exception + */ + public static function crypto_kx_keypair() + { + $sk = self::randombytes_buf(self::CRYPTO_KX_SECRETKEYBYTES); + $pk = self::crypto_scalarmult_base($sk); + return $sk . $pk; + } + + /** + * @param string $keypair + * @param string $serverPublicKey + * @return array{0: string, 1: string} + * @throws SodiumException + */ + public static function crypto_kx_client_session_keys($keypair, $serverPublicKey) + { + ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($serverPublicKey, 'string', 2); + + $keypair = (string) $keypair; + $serverPublicKey = (string) $serverPublicKey; + + if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_KX_KEYPAIRBYTES) { + throw new SodiumException('keypair should be SODIUM_CRYPTO_KX_KEYPAIRBYTES bytes'); + } + if (ParagonIE_Sodium_Core_Util::strlen($serverPublicKey) !== self::CRYPTO_KX_PUBLICKEYBYTES) { + throw new SodiumException('public keys must be SODIUM_CRYPTO_KX_PUBLICKEYBYTES bytes'); + } + + $sk = self::crypto_kx_secretkey($keypair); + $pk = self::crypto_kx_publickey($keypair); + $h = self::crypto_generichash_init(null, self::CRYPTO_KX_SESSIONKEYBYTES * 2); + self::crypto_generichash_update($h, self::crypto_scalarmult($sk, $serverPublicKey)); + self::crypto_generichash_update($h, $pk); + self::crypto_generichash_update($h, $serverPublicKey); + $sessionKeys = self::crypto_generichash_final($h, self::CRYPTO_KX_SESSIONKEYBYTES * 2); + return array( + ParagonIE_Sodium_Core_Util::substr( + $sessionKeys, + 0, + self::CRYPTO_KX_SESSIONKEYBYTES + ), + ParagonIE_Sodium_Core_Util::substr( + $sessionKeys, + self::CRYPTO_KX_SESSIONKEYBYTES, + self::CRYPTO_KX_SESSIONKEYBYTES + ) + ); + } + + /** + * @param string $keypair + * @param string $clientPublicKey + * @return array{0: string, 1: string} + * @throws SodiumException + */ + public static function crypto_kx_server_session_keys($keypair, $clientPublicKey) + { + ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($clientPublicKey, 'string', 2); + + $keypair = (string) $keypair; + $clientPublicKey = (string) $clientPublicKey; + + if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_KX_KEYPAIRBYTES) { + throw new SodiumException('keypair should be SODIUM_CRYPTO_KX_KEYPAIRBYTES bytes'); + } + if (ParagonIE_Sodium_Core_Util::strlen($clientPublicKey) !== self::CRYPTO_KX_PUBLICKEYBYTES) { + throw new SodiumException('public keys must be SODIUM_CRYPTO_KX_PUBLICKEYBYTES bytes'); + } + + $sk = self::crypto_kx_secretkey($keypair); + $pk = self::crypto_kx_publickey($keypair); + $h = self::crypto_generichash_init(null, self::CRYPTO_KX_SESSIONKEYBYTES * 2); + self::crypto_generichash_update($h, self::crypto_scalarmult($sk, $clientPublicKey)); + self::crypto_generichash_update($h, $clientPublicKey); + self::crypto_generichash_update($h, $pk); + $sessionKeys = self::crypto_generichash_final($h, self::CRYPTO_KX_SESSIONKEYBYTES * 2); + return array( + ParagonIE_Sodium_Core_Util::substr( + $sessionKeys, + self::CRYPTO_KX_SESSIONKEYBYTES, + self::CRYPTO_KX_SESSIONKEYBYTES + ), + ParagonIE_Sodium_Core_Util::substr( + $sessionKeys, + 0, + self::CRYPTO_KX_SESSIONKEYBYTES + ) + ); + } + + /** + * @param string $kp + * @return string + * @throws SodiumException + */ + public static function crypto_kx_secretkey($kp) + { + return ParagonIE_Sodium_Core_Util::substr( + $kp, + 0, + self::CRYPTO_KX_SECRETKEYBYTES + ); + } + + /** + * @param string $kp + * @return string + * @throws SodiumException + */ + public static function crypto_kx_publickey($kp) + { + return ParagonIE_Sodium_Core_Util::substr( + $kp, + self::CRYPTO_KX_SECRETKEYBYTES, + self::CRYPTO_KX_PUBLICKEYBYTES + ); + } + + /** + * @param int $outlen + * @param string $passwd + * @param string $salt + * @param int $opslimit + * @param int $memlimit + * @param int|null $alg + * @return string + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_pwhash($outlen, $passwd, $salt, $opslimit, $memlimit, $alg = null) + { + ParagonIE_Sodium_Core_Util::declareScalarType($outlen, 'int', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($salt, 'string', 3); + ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 4); + ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 5); + + if (self::useNewSodiumAPI()) { + if (!is_null($alg)) { + ParagonIE_Sodium_Core_Util::declareScalarType($alg, 'int', 6); + return sodium_crypto_pwhash($outlen, $passwd, $salt, $opslimit, $memlimit, $alg); + } + return sodium_crypto_pwhash($outlen, $passwd, $salt, $opslimit, $memlimit); + } + if (self::use_fallback('crypto_pwhash')) { + return (string) call_user_func('\\Sodium\\crypto_pwhash', $outlen, $passwd, $salt, $opslimit, $memlimit); + } + // This is the best we can do. + throw new SodiumException( + 'This is not implemented, as it is not possible to implement Argon2i with acceptable performance in pure-PHP' + ); + } + + /** + * !Exclusive to sodium_compat! + * + * This returns TRUE if the native crypto_pwhash API is available by libsodium. + * This returns FALSE if only sodium_compat is available. + * + * @return bool + */ + public static function crypto_pwhash_is_available() + { + if (self::useNewSodiumAPI()) { + return true; + } + if (self::use_fallback('crypto_pwhash')) { + return true; + } + return false; + } + + /** + * @param string $passwd + * @param int $opslimit + * @param int $memlimit + * @return string + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_pwhash_str($passwd, $opslimit, $memlimit) + { + ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 3); + + if (self::useNewSodiumAPI()) { + return sodium_crypto_pwhash_str($passwd, $opslimit, $memlimit); + } + if (self::use_fallback('crypto_pwhash_str')) { + return (string) call_user_func('\\Sodium\\crypto_pwhash_str', $passwd, $opslimit, $memlimit); + } + // This is the best we can do. + throw new SodiumException( + 'This is not implemented, as it is not possible to implement Argon2i with acceptable performance in pure-PHP' + ); + } + + /** + * Do we need to rehash this password? + * + * @param string $hash + * @param int $opslimit + * @param int $memlimit + * @return bool + * @throws SodiumException + */ + public static function crypto_pwhash_str_needs_rehash($hash, $opslimit, $memlimit) + { + ParagonIE_Sodium_Core_Util::declareScalarType($hash, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 3); + + // Just grab the first 4 pieces. + $pieces = explode('$', (string) $hash); + $prefix = implode('$', array_slice($pieces, 0, 4)); + + // Rebuild the expected header. + /** @var int $ops */ + $ops = (int) $opslimit; + /** @var int $mem */ + $mem = (int) $memlimit >> 10; + $encoded = self::CRYPTO_PWHASH_STRPREFIX . 'v=19$m=' . $mem . ',t=' . $ops . ',p=1'; + + // Do they match? If so, we don't need to rehash, so return false. + return !ParagonIE_Sodium_Core_Util::hashEquals($encoded, $prefix); + } + + /** + * @param string $passwd + * @param string $hash + * @return bool + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_pwhash_str_verify($passwd, $hash) + { + ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($hash, 'string', 2); + + if (self::useNewSodiumAPI()) { + return (bool) sodium_crypto_pwhash_str_verify($passwd, $hash); + } + if (self::use_fallback('crypto_pwhash_str_verify')) { + return (bool) call_user_func('\\Sodium\\crypto_pwhash_str_verify', $passwd, $hash); + } + // This is the best we can do. + throw new SodiumException( + 'This is not implemented, as it is not possible to implement Argon2i with acceptable performance in pure-PHP' + ); + } + + /** + * @param int $outlen + * @param string $passwd + * @param string $salt + * @param int $opslimit + * @param int $memlimit + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function crypto_pwhash_scryptsalsa208sha256($outlen, $passwd, $salt, $opslimit, $memlimit) + { + ParagonIE_Sodium_Core_Util::declareScalarType($outlen, 'int', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($salt, 'string', 3); + ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 4); + ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 5); + + if (self::useNewSodiumAPI()) { + return (string) sodium_crypto_pwhash_scryptsalsa208sha256( + (int) $outlen, + (string) $passwd, + (string) $salt, + (int) $opslimit, + (int) $memlimit + ); + } + if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256')) { + return (string) call_user_func( + '\\Sodium\\crypto_pwhash_scryptsalsa208sha256', + (int) $outlen, + (string) $passwd, + (string) $salt, + (int) $opslimit, + (int) $memlimit + ); + } + // This is the best we can do. + throw new SodiumException( + 'This is not implemented, as it is not possible to implement Scrypt with acceptable performance in pure-PHP' + ); + } + + /** + * !Exclusive to sodium_compat! + * + * This returns TRUE if the native crypto_pwhash API is available by libsodium. + * This returns FALSE if only sodium_compat is available. + * + * @return bool + */ + public static function crypto_pwhash_scryptsalsa208sha256_is_available() + { + if (self::useNewSodiumAPI()) { + return true; + } + if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256')) { + return true; + } + return false; + } + + /** + * @param string $passwd + * @param int $opslimit + * @param int $memlimit + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function crypto_pwhash_scryptsalsa208sha256_str($passwd, $opslimit, $memlimit) + { + ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 3); + + if (self::useNewSodiumAPI()) { + return (string) sodium_crypto_pwhash_scryptsalsa208sha256_str( + (string) $passwd, + (int) $opslimit, + (int) $memlimit + ); + } + if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256_str')) { + return (string) call_user_func( + '\\Sodium\\crypto_pwhash_scryptsalsa208sha256_str', + (string) $passwd, + (int) $opslimit, + (int) $memlimit + ); + } + // This is the best we can do. + throw new SodiumException( + 'This is not implemented, as it is not possible to implement Scrypt with acceptable performance in pure-PHP' + ); + } + + /** + * @param string $passwd + * @param string $hash + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function crypto_pwhash_scryptsalsa208sha256_str_verify($passwd, $hash) + { + ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($hash, 'string', 2); + + if (self::useNewSodiumAPI()) { + return (bool) sodium_crypto_pwhash_scryptsalsa208sha256_str_verify( + (string) $passwd, + (string) $hash + ); + } + if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256_str_verify')) { + return (bool) call_user_func( + '\\Sodium\\crypto_pwhash_scryptsalsa208sha256_str_verify', + (string) $passwd, + (string) $hash + ); + } + // This is the best we can do. + throw new SodiumException( + 'This is not implemented, as it is not possible to implement Scrypt with acceptable performance in pure-PHP' + ); + } + + /** + * Calculate the shared secret between your secret key and your + * recipient's public key. + * + * Algorithm: X25519 (ECDH over Curve25519) + * + * @param string $secretKey + * @param string $publicKey + * @return string + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_scalarmult($secretKey, $publicKey) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) { + throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_BOX_PUBLICKEYBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return sodium_crypto_scalarmult($secretKey, $publicKey); + } + if (self::use_fallback('crypto_scalarmult')) { + return (string) call_user_func('\\Sodium\\crypto_scalarmult', $secretKey, $publicKey); + } + + /* Output validation: Forbid all-zero keys */ + if (ParagonIE_Sodium_Core_Util::hashEquals($secretKey, str_repeat("\0", self::CRYPTO_BOX_SECRETKEYBYTES))) { + throw new SodiumException('Zero secret key is not allowed'); + } + if (ParagonIE_Sodium_Core_Util::hashEquals($publicKey, str_repeat("\0", self::CRYPTO_BOX_PUBLICKEYBYTES))) { + throw new SodiumException('Zero public key is not allowed'); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::scalarmult($secretKey, $publicKey); + } + return ParagonIE_Sodium_Crypto::scalarmult($secretKey, $publicKey); + } + + /** + * Calculate an X25519 public key from an X25519 secret key. + * + * @param string $secretKey + * @return string + * @throws SodiumException + * @throws TypeError + * @psalm-suppress TooFewArguments + * @psalm-suppress MixedArgument + */ + public static function crypto_scalarmult_base($secretKey) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) { + throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return sodium_crypto_scalarmult_base($secretKey); + } + if (self::use_fallback('crypto_scalarmult_base')) { + return (string) call_user_func('\\Sodium\\crypto_scalarmult_base', $secretKey); + } + if (ParagonIE_Sodium_Core_Util::hashEquals($secretKey, str_repeat("\0", self::CRYPTO_BOX_SECRETKEYBYTES))) { + throw new SodiumException('Zero secret key is not allowed'); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::scalarmult_base($secretKey); + } + return ParagonIE_Sodium_Crypto::scalarmult_base($secretKey); + } + + /** + * Authenticated symmetric-key encryption. + * + * Algorithm: XSalsa20-Poly1305 + * + * @param string $plaintext The message you're encrypting + * @param string $nonce A Number to be used Once; must be 24 bytes + * @param string $key Symmetric encryption key + * @return string Ciphertext with Poly1305 MAC + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_secretbox($plaintext, $nonce, $key) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) { + throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return sodium_crypto_secretbox($plaintext, $nonce, $key); + } + if (self::use_fallback('crypto_secretbox')) { + return (string) call_user_func('\\Sodium\\crypto_secretbox', $plaintext, $nonce, $key); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::secretbox($plaintext, $nonce, $key); + } + return ParagonIE_Sodium_Crypto::secretbox($plaintext, $nonce, $key); + } + + /** + * Decrypts a message previously encrypted with crypto_secretbox(). + * + * @param string $ciphertext Ciphertext with Poly1305 MAC + * @param string $nonce A Number to be used Once; must be 24 bytes + * @param string $key Symmetric encryption key + * @return string Original plaintext message + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedInferredReturnType + * @psalm-suppress MixedReturnStatement + */ + public static function crypto_secretbox_open($ciphertext, $nonce, $key) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) { + throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + /** + * @psalm-suppress InvalidReturnStatement + * @psalm-suppress FalsableReturnStatement + */ + return sodium_crypto_secretbox_open($ciphertext, $nonce, $key); + } + if (self::use_fallback('crypto_secretbox_open')) { + return call_user_func('\\Sodium\\crypto_secretbox_open', $ciphertext, $nonce, $key); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::secretbox_open($ciphertext, $nonce, $key); + } + return ParagonIE_Sodium_Crypto::secretbox_open($ciphertext, $nonce, $key); + } + + /** + * Return a secure random key for use with crypto_secretbox + * + * @return string + * @throws Exception + * @throws Error + */ + public static function crypto_secretbox_keygen() + { + return random_bytes(self::CRYPTO_SECRETBOX_KEYBYTES); + } + + /** + * Authenticated symmetric-key encryption. + * + * Algorithm: XChaCha20-Poly1305 + * + * @param string $plaintext The message you're encrypting + * @param string $nonce A Number to be used Once; must be 24 bytes + * @param string $key Symmetric encryption key + * @return string Ciphertext with Poly1305 MAC + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_secretbox_xchacha20poly1305($plaintext, $nonce, $key) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) { + throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.'); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::secretbox_xchacha20poly1305($plaintext, $nonce, $key); + } + return ParagonIE_Sodium_Crypto::secretbox_xchacha20poly1305($plaintext, $nonce, $key); + } + /** + * Decrypts a message previously encrypted with crypto_secretbox_xchacha20poly1305(). + * + * @param string $ciphertext Ciphertext with Poly1305 MAC + * @param string $nonce A Number to be used Once; must be 24 bytes + * @param string $key Symmetric encryption key + * @return string Original plaintext message + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_secretbox_xchacha20poly1305_open($ciphertext, $nonce, $key) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) { + throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.'); + } + + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::secretbox_xchacha20poly1305_open($ciphertext, $nonce, $key); + } + return ParagonIE_Sodium_Crypto::secretbox_xchacha20poly1305_open($ciphertext, $nonce, $key); + } + + /** + * @param string $key + * @return array<int, string> Returns a state and a header. + * @throws Exception + * @throws SodiumException + */ + public static function crypto_secretstream_xchacha20poly1305_init_push($key) + { + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_init_push($key); + } + return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_init_push($key); + } + + /** + * @param string $header + * @param string $key + * @return string Returns a state. + * @throws Exception + */ + public static function crypto_secretstream_xchacha20poly1305_init_pull($header, $key) + { + if (ParagonIE_Sodium_Core_Util::strlen($header) < self::CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES) { + throw new SodiumException( + 'header size should be SODIUM_CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES bytes' + ); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_init_pull($key, $header); + } + return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_init_pull($key, $header); + } + + /** + * @param string $state + * @param string $msg + * @param string $aad + * @param int $tag + * @return string + * @throws SodiumException + */ + public static function crypto_secretstream_xchacha20poly1305_push(&$state, $msg, $aad = '', $tag = 0) + { + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_push( + $state, + $msg, + $aad, + $tag + ); + } + return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_push( + $state, + $msg, + $aad, + $tag + ); + } + + /** + * @param string $state + * @param string $msg + * @param string $aad + * @return bool|array{0: string, 1: int} + * @throws SodiumException + */ + public static function crypto_secretstream_xchacha20poly1305_pull(&$state, $msg, $aad = '') + { + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_pull( + $state, + $msg, + $aad + ); + } + return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_pull( + $state, + $msg, + $aad + ); + } + + /** + * @return string + * @throws Exception + */ + public static function crypto_secretstream_xchacha20poly1305_keygen() + { + return random_bytes(self::CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_KEYBYTES); + } + + /** + * @param string $state + * @return void + * @throws SodiumException + */ + public static function crypto_secretstream_xchacha20poly1305_rekey(&$state) + { + if (PHP_INT_SIZE === 4) { + ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_rekey($state); + } else { + ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_rekey($state); + } + } + + /** + * Calculates a SipHash-2-4 hash of a message for a given key. + * + * @param string $message Input message + * @param string $key SipHash-2-4 key + * @return string Hash + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedInferredReturnType + * @psalm-suppress MixedReturnStatement + */ + public static function crypto_shorthash($message, $key) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 2); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SHORTHASH_KEYBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_SHORTHASH_KEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return sodium_crypto_shorthash($message, $key); + } + if (self::use_fallback('crypto_shorthash')) { + return (string) call_user_func('\\Sodium\\crypto_shorthash', $message, $key); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Core32_SipHash::sipHash24($message, $key); + } + return ParagonIE_Sodium_Core_SipHash::sipHash24($message, $key); + } + + /** + * Return a secure random key for use with crypto_shorthash + * + * @return string + * @throws Exception + * @throws Error + */ + public static function crypto_shorthash_keygen() + { + return random_bytes(self::CRYPTO_SHORTHASH_KEYBYTES); + } + + /** + * Returns a signed message. You probably want crypto_sign_detached() + * instead, which only returns the signature. + * + * Algorithm: Ed25519 (EdDSA over Curve25519) + * + * @param string $message Message to be signed. + * @param string $secretKey Secret signing key. + * @return string Signed message (signature is prefixed). + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedInferredReturnType + * @psalm-suppress MixedReturnStatement + */ + public static function crypto_sign($message, $secretKey) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 2); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_SIGN_SECRETKEYBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_SIGN_SECRETKEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return sodium_crypto_sign($message, $secretKey); + } + if (self::use_fallback('crypto_sign')) { + return (string) call_user_func('\\Sodium\\crypto_sign', $message, $secretKey); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::sign($message, $secretKey); + } + return ParagonIE_Sodium_Crypto::sign($message, $secretKey); + } + + /** + * Validates a signed message then returns the message. + * + * @param string $signedMessage A signed message + * @param string $publicKey A public key + * @return string The original message (if the signature is + * valid for this public key) + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedInferredReturnType + * @psalm-suppress MixedReturnStatement + */ + public static function crypto_sign_open($signedMessage, $publicKey) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($signedMessage, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($signedMessage) < self::CRYPTO_SIGN_BYTES) { + throw new SodiumException('Argument 1 must be at least CRYPTO_SIGN_BYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_SIGN_PUBLICKEYBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_SIGN_PUBLICKEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + /** + * @psalm-suppress InvalidReturnStatement + * @psalm-suppress FalsableReturnStatement + */ + return sodium_crypto_sign_open($signedMessage, $publicKey); + } + if (self::use_fallback('crypto_sign_open')) { + return call_user_func('\\Sodium\\crypto_sign_open', $signedMessage, $publicKey); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::sign_open($signedMessage, $publicKey); + } + return ParagonIE_Sodium_Crypto::sign_open($signedMessage, $publicKey); + } + + /** + * Generate a new random Ed25519 keypair. + * + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function crypto_sign_keypair() + { + if (self::useNewSodiumAPI()) { + return sodium_crypto_sign_keypair(); + } + if (self::use_fallback('crypto_sign_keypair')) { + return (string) call_user_func('\\Sodium\\crypto_sign_keypair'); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Core32_Ed25519::keypair(); + } + return ParagonIE_Sodium_Core_Ed25519::keypair(); + } + + /** + * @param string $sk + * @param string $pk + * @return string + * @throws SodiumException + */ + public static function crypto_sign_keypair_from_secretkey_and_publickey($sk, $pk) + { + ParagonIE_Sodium_Core_Util::declareScalarType($sk, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($pk, 'string', 1); + $sk = (string) $sk; + $pk = (string) $pk; + + if (ParagonIE_Sodium_Core_Util::strlen($sk) !== self::CRYPTO_SIGN_SECRETKEYBYTES) { + throw new SodiumException('secretkey should be SODIUM_CRYPTO_SIGN_SECRETKEYBYTES bytes'); + } + if (ParagonIE_Sodium_Core_Util::strlen($pk) !== self::CRYPTO_SIGN_PUBLICKEYBYTES) { + throw new SodiumException('publickey should be SODIUM_CRYPTO_SIGN_PUBLICKEYBYTES bytes'); + } + + if (self::useNewSodiumAPI()) { + return sodium_crypto_sign_keypair_from_secretkey_and_publickey($sk, $pk); + } + return $sk . $pk; + } + + /** + * Generate an Ed25519 keypair from a seed. + * + * @param string $seed Input seed + * @return string Keypair + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_sign_seed_keypair($seed) + { + ParagonIE_Sodium_Core_Util::declareScalarType($seed, 'string', 1); + + if (self::useNewSodiumAPI()) { + return sodium_crypto_sign_seed_keypair($seed); + } + if (self::use_fallback('crypto_sign_keypair')) { + return (string) call_user_func('\\Sodium\\crypto_sign_seed_keypair', $seed); + } + $publicKey = ''; + $secretKey = ''; + if (PHP_INT_SIZE === 4) { + ParagonIE_Sodium_Core32_Ed25519::seed_keypair($publicKey, $secretKey, $seed); + } else { + ParagonIE_Sodium_Core_Ed25519::seed_keypair($publicKey, $secretKey, $seed); + } + return $secretKey . $publicKey; + } + + /** + * Extract an Ed25519 public key from an Ed25519 keypair. + * + * @param string $keypair Keypair + * @return string Public key + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_sign_publickey($keypair) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_SIGN_KEYPAIRBYTES) { + throw new SodiumException('Argument 1 must be CRYPTO_SIGN_KEYPAIRBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return sodium_crypto_sign_publickey($keypair); + } + if (self::use_fallback('crypto_sign_publickey')) { + return (string) call_user_func('\\Sodium\\crypto_sign_publickey', $keypair); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Core32_Ed25519::publickey($keypair); + } + return ParagonIE_Sodium_Core_Ed25519::publickey($keypair); + } + + /** + * Calculate an Ed25519 public key from an Ed25519 secret key. + * + * @param string $secretKey Your Ed25519 secret key + * @return string The corresponding Ed25519 public key + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_sign_publickey_from_secretkey($secretKey) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_SIGN_SECRETKEYBYTES) { + throw new SodiumException('Argument 1 must be CRYPTO_SIGN_SECRETKEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return sodium_crypto_sign_publickey_from_secretkey($secretKey); + } + if (self::use_fallback('crypto_sign_publickey_from_secretkey')) { + return (string) call_user_func('\\Sodium\\crypto_sign_publickey_from_secretkey', $secretKey); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Core32_Ed25519::publickey_from_secretkey($secretKey); + } + return ParagonIE_Sodium_Core_Ed25519::publickey_from_secretkey($secretKey); + } + + /** + * Extract an Ed25519 secret key from an Ed25519 keypair. + * + * @param string $keypair Keypair + * @return string Secret key + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_sign_secretkey($keypair) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_SIGN_KEYPAIRBYTES) { + throw new SodiumException('Argument 1 must be CRYPTO_SIGN_KEYPAIRBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return sodium_crypto_sign_secretkey($keypair); + } + if (self::use_fallback('crypto_sign_secretkey')) { + return (string) call_user_func('\\Sodium\\crypto_sign_secretkey', $keypair); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Core32_Ed25519::secretkey($keypair); + } + return ParagonIE_Sodium_Core_Ed25519::secretkey($keypair); + } + + /** + * Calculate the Ed25519 signature of a message and return ONLY the signature. + * + * Algorithm: Ed25519 (EdDSA over Curve25519) + * + * @param string $message Message to be signed + * @param string $secretKey Secret signing key + * @return string Digital signature + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_sign_detached($message, $secretKey) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 2); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_SIGN_SECRETKEYBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_SIGN_SECRETKEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return sodium_crypto_sign_detached($message, $secretKey); + } + if (self::use_fallback('crypto_sign_detached')) { + return (string) call_user_func('\\Sodium\\crypto_sign_detached', $message, $secretKey); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::sign_detached($message, $secretKey); + } + return ParagonIE_Sodium_Crypto::sign_detached($message, $secretKey); + } + + /** + * Verify the Ed25519 signature of a message. + * + * @param string $signature Digital sginature + * @param string $message Message to be verified + * @param string $publicKey Public key + * @return bool TRUE if this signature is good for this public key; + * FALSE otherwise + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_sign_verify_detached($signature, $message, $publicKey) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($signature, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 3); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($signature) !== self::CRYPTO_SIGN_BYTES) { + throw new SodiumException('Argument 1 must be CRYPTO_SIGN_BYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_SIGN_PUBLICKEYBYTES) { + throw new SodiumException('Argument 3 must be CRYPTO_SIGN_PUBLICKEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return sodium_crypto_sign_verify_detached($signature, $message, $publicKey); + } + if (self::use_fallback('crypto_sign_verify_detached')) { + return (bool) call_user_func( + '\\Sodium\\crypto_sign_verify_detached', + $signature, + $message, + $publicKey + ); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Crypto32::sign_verify_detached($signature, $message, $publicKey); + } + return ParagonIE_Sodium_Crypto::sign_verify_detached($signature, $message, $publicKey); + } + + /** + * Convert an Ed25519 public key to a Curve25519 public key + * + * @param string $pk + * @return string + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_sign_ed25519_pk_to_curve25519($pk) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($pk, 'string', 1); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($pk) < self::CRYPTO_SIGN_PUBLICKEYBYTES) { + throw new SodiumException('Argument 1 must be at least CRYPTO_SIGN_PUBLICKEYBYTES long.'); + } + if (self::useNewSodiumAPI()) { + if (is_callable('crypto_sign_ed25519_pk_to_curve25519')) { + return (string) sodium_crypto_sign_ed25519_pk_to_curve25519($pk); + } + } + if (self::use_fallback('crypto_sign_ed25519_pk_to_curve25519')) { + return (string) call_user_func('\\Sodium\\crypto_sign_ed25519_pk_to_curve25519', $pk); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Core32_Ed25519::pk_to_curve25519($pk); + } + return ParagonIE_Sodium_Core_Ed25519::pk_to_curve25519($pk); + } + + /** + * Convert an Ed25519 secret key to a Curve25519 secret key + * + * @param string $sk + * @return string + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_sign_ed25519_sk_to_curve25519($sk) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($sk, 'string', 1); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($sk) < self::CRYPTO_SIGN_SEEDBYTES) { + throw new SodiumException('Argument 1 must be at least CRYPTO_SIGN_SEEDBYTES long.'); + } + if (self::useNewSodiumAPI()) { + if (is_callable('crypto_sign_ed25519_sk_to_curve25519')) { + return sodium_crypto_sign_ed25519_sk_to_curve25519($sk); + } + } + if (self::use_fallback('crypto_sign_ed25519_sk_to_curve25519')) { + return (string) call_user_func('\\Sodium\\crypto_sign_ed25519_sk_to_curve25519', $sk); + } + + $h = hash('sha512', ParagonIE_Sodium_Core_Util::substr($sk, 0, 32), true); + $h[0] = ParagonIE_Sodium_Core_Util::intToChr( + ParagonIE_Sodium_Core_Util::chrToInt($h[0]) & 248 + ); + $h[31] = ParagonIE_Sodium_Core_Util::intToChr( + (ParagonIE_Sodium_Core_Util::chrToInt($h[31]) & 127) | 64 + ); + return ParagonIE_Sodium_Core_Util::substr($h, 0, 32); + } + + /** + * Expand a key and nonce into a keystream of pseudorandom bytes. + * + * @param int $len Number of bytes desired + * @param string $nonce Number to be used Once; must be 24 bytes + * @param string $key XSalsa20 key + * @return string Pseudorandom stream that can be XORed with messages + * to provide encryption (but not authentication; see + * Poly1305 or crypto_auth() for that, which is not + * optional for security) + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_stream($len, $nonce, $key) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($len, 'int', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_NONCEBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_KEYBYTES) { + throw new SodiumException('Argument 3 must be CRYPTO_STREAM_KEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return sodium_crypto_stream($len, $nonce, $key); + } + if (self::use_fallback('crypto_stream')) { + return (string) call_user_func('\\Sodium\\crypto_stream', $len, $nonce, $key); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Core32_XSalsa20::xsalsa20($len, $nonce, $key); + } + return ParagonIE_Sodium_Core_XSalsa20::xsalsa20($len, $nonce, $key); + } + + /** + * DANGER! UNAUTHENTICATED ENCRYPTION! + * + * Unless you are following expert advice, do not use this feature. + * + * Algorithm: XSalsa20 + * + * This DOES NOT provide ciphertext integrity. + * + * @param string $message Plaintext message + * @param string $nonce Number to be used Once; must be 24 bytes + * @param string $key Encryption key + * @return string Encrypted text which is vulnerable to chosen- + * ciphertext attacks unless you implement some + * other mitigation to the ciphertext (i.e. + * Encrypt then MAC) + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_stream_xor($message, $nonce, $key) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_NONCEBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_KEYBYTES) { + throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.'); + } + + if (self::useNewSodiumAPI()) { + return sodium_crypto_stream_xor($message, $nonce, $key); + } + if (self::use_fallback('crypto_stream_xor')) { + return (string) call_user_func('\\Sodium\\crypto_stream_xor', $message, $nonce, $key); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Core32_XSalsa20::xsalsa20_xor($message, $nonce, $key); + } + return ParagonIE_Sodium_Core_XSalsa20::xsalsa20_xor($message, $nonce, $key); + } + + /** + * Return a secure random key for use with crypto_stream + * + * @return string + * @throws Exception + * @throws Error + */ + public static function crypto_stream_keygen() + { + return random_bytes(self::CRYPTO_STREAM_KEYBYTES); + } + + + /** + * Expand a key and nonce into a keystream of pseudorandom bytes. + * + * @param int $len Number of bytes desired + * @param string $nonce Number to be used Once; must be 24 bytes + * @param string $key XChaCha20 key + * @param bool $dontFallback + * @return string Pseudorandom stream that can be XORed with messages + * to provide encryption (but not authentication; see + * Poly1305 or crypto_auth() for that, which is not + * optional for security) + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_stream_xchacha20($len, $nonce, $key, $dontFallback = false) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($len, 'int', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_XCHACHA20_NONCEBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_XCHACHA20_NONCEBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_XCHACHA20_KEYBYTES) { + throw new SodiumException('Argument 3 must be CRYPTO_STREAM_XCHACHA20_KEYBYTES long.'); + } + + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_stream_xchacha20($len, $nonce, $key); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Core32_XChaCha20::stream($len, $nonce, $key); + } + return ParagonIE_Sodium_Core_XChaCha20::stream($len, $nonce, $key); + } + + /** + * DANGER! UNAUTHENTICATED ENCRYPTION! + * + * Unless you are following expert advice, do not use this feature. + * + * Algorithm: XChaCha20 + * + * This DOES NOT provide ciphertext integrity. + * + * @param string $message Plaintext message + * @param string $nonce Number to be used Once; must be 24 bytes + * @param string $key Encryption key + * @return string Encrypted text which is vulnerable to chosen- + * ciphertext attacks unless you implement some + * other mitigation to the ciphertext (i.e. + * Encrypt then MAC) + * @param bool $dontFallback + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_stream_xchacha20_xor($message, $nonce, $key, $dontFallback = false) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_XCHACHA20_NONCEBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_XCHACHA20_NONCEBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_XCHACHA20_KEYBYTES) { + throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_XCHACHA20_KEYBYTES long.'); + } + + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_stream_xchacha20_xor($message, $nonce, $key); + } + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Core32_XChaCha20::streamXorIc($message, $nonce, $key); + } + return ParagonIE_Sodium_Core_XChaCha20::streamXorIc($message, $nonce, $key); + } + + /** + * DANGER! UNAUTHENTICATED ENCRYPTION! + * + * Unless you are following expert advice, do not use this feature. + * + * Algorithm: XChaCha20 + * + * This DOES NOT provide ciphertext integrity. + * + * @param string $message Plaintext message + * @param string $nonce Number to be used Once; must be 24 bytes + * @param int $counter + * @param string $key Encryption key + * @return string Encrypted text which is vulnerable to chosen- + * ciphertext attacks unless you implement some + * other mitigation to the ciphertext (i.e. + * Encrypt then MAC) + * @param bool $dontFallback + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function crypto_stream_xchacha20_xor_ic($message, $nonce, $counter, $key, $dontFallback = false) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2); + ParagonIE_Sodium_Core_Util::declareScalarType($counter, 'int', 3); + ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4); + + /* Input validation: */ + if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_XCHACHA20_NONCEBYTES) { + throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_XCHACHA20_NONCEBYTES long.'); + } + if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_XCHACHA20_KEYBYTES) { + throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_XCHACHA20_KEYBYTES long.'); + } + + if (is_callable('sodium_crypto_stream_xchacha20_xor_ic') && !$dontFallback) { + return sodium_crypto_stream_xchacha20_xor_ic($message, $nonce, $counter, $key); + } + + $ic = ParagonIE_Sodium_Core_Util::store64_le($counter); + if (PHP_INT_SIZE === 4) { + return ParagonIE_Sodium_Core32_XChaCha20::streamXorIc($message, $nonce, $key, $ic); + } + return ParagonIE_Sodium_Core_XChaCha20::streamXorIc($message, $nonce, $key, $ic); + } + + /** + * Return a secure random key for use with crypto_stream_xchacha20 + * + * @return string + * @throws Exception + * @throws Error + */ + public static function crypto_stream_xchacha20_keygen() + { + return random_bytes(self::CRYPTO_STREAM_XCHACHA20_KEYBYTES); + } + + /** + * Cache-timing-safe implementation of hex2bin(). + * + * @param string $string Hexadecimal string + * @param string $ignore List of characters to ignore; useful for whitespace + * @return string Raw binary string + * @throws SodiumException + * @throws TypeError + * @psalm-suppress TooFewArguments + * @psalm-suppress MixedArgument + */ + public static function hex2bin($string, $ignore = '') + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($string, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($ignore, 'string', 2); + + if (self::useNewSodiumAPI()) { + if (is_callable('sodium_hex2bin')) { + return (string) sodium_hex2bin($string, $ignore); + } + } + if (self::use_fallback('hex2bin')) { + return (string) call_user_func('\\Sodium\\hex2bin', $string, $ignore); + } + return ParagonIE_Sodium_Core_Util::hex2bin($string, $ignore); + } + + /** + * Increase a string (little endian) + * + * @param string $var + * + * @return void + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function increment(&$var) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($var, 'string', 1); + + if (self::useNewSodiumAPI()) { + sodium_increment($var); + return; + } + if (self::use_fallback('increment')) { + $func = '\\Sodium\\increment'; + $func($var); + return; + } + + $len = ParagonIE_Sodium_Core_Util::strlen($var); + $c = 1; + $copy = ''; + for ($i = 0; $i < $len; ++$i) { + $c += ParagonIE_Sodium_Core_Util::chrToInt( + ParagonIE_Sodium_Core_Util::substr($var, $i, 1) + ); + $copy .= ParagonIE_Sodium_Core_Util::intToChr($c); + $c >>= 8; + } + $var = $copy; + } + + /** + * @param string $str + * @return bool + * + * @throws SodiumException + */ + public static function is_zero($str) + { + $d = 0; + for ($i = 0; $i < 32; ++$i) { + $d |= ParagonIE_Sodium_Core_Util::chrToInt($str[$i]); + } + return ((($d - 1) >> 31) & 1) === 1; + } + + /** + * The equivalent to the libsodium minor version we aim to be compatible + * with (sans pwhash and memzero). + * + * @return int + */ + public static function library_version_major() + { + if (self::useNewSodiumAPI() && defined('SODIUM_LIBRARY_MAJOR_VERSION')) { + return SODIUM_LIBRARY_MAJOR_VERSION; + } + if (self::use_fallback('library_version_major')) { + /** @psalm-suppress UndefinedFunction */ + return (int) call_user_func('\\Sodium\\library_version_major'); + } + return self::LIBRARY_VERSION_MAJOR; + } + + /** + * The equivalent to the libsodium minor version we aim to be compatible + * with (sans pwhash and memzero). + * + * @return int + */ + public static function library_version_minor() + { + if (self::useNewSodiumAPI() && defined('SODIUM_LIBRARY_MINOR_VERSION')) { + return SODIUM_LIBRARY_MINOR_VERSION; + } + if (self::use_fallback('library_version_minor')) { + /** @psalm-suppress UndefinedFunction */ + return (int) call_user_func('\\Sodium\\library_version_minor'); + } + return self::LIBRARY_VERSION_MINOR; + } + + /** + * Compare two strings. + * + * @param string $left + * @param string $right + * @return int + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + */ + public static function memcmp($left, $right) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($left, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($right, 'string', 2); + + if (self::useNewSodiumAPI()) { + return sodium_memcmp($left, $right); + } + if (self::use_fallback('memcmp')) { + return (int) call_user_func('\\Sodium\\memcmp', $left, $right); + } + /** @var string $left */ + /** @var string $right */ + return ParagonIE_Sodium_Core_Util::memcmp($left, $right); + } + + /** + * It's actually not possible to zero memory buffers in PHP. You need the + * native library for that. + * + * @param string|null $var + * @param-out string|null $var + * + * @return void + * @throws SodiumException (Unless libsodium is installed) + * @throws TypeError + * @psalm-suppress TooFewArguments + */ + public static function memzero(&$var) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($var, 'string', 1); + + if (self::useNewSodiumAPI()) { + /** @psalm-suppress MixedArgument */ + sodium_memzero($var); + return; + } + if (self::use_fallback('memzero')) { + $func = '\\Sodium\\memzero'; + $func($var); + if ($var === null) { + return; + } + } + // This is the best we can do. + throw new SodiumException( + 'This is not implemented in sodium_compat, as it is not possible to securely wipe memory from PHP. ' . + 'To fix this error, make sure libsodium is installed and the PHP extension is enabled.' + ); + } + + /** + * @param string $unpadded + * @param int $blockSize + * @param bool $dontFallback + * @return string + * @throws SodiumException + */ + public static function pad($unpadded, $blockSize, $dontFallback = false) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($unpadded, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($blockSize, 'int', 2); + + $unpadded = (string) $unpadded; + $blockSize = (int) $blockSize; + + if (self::useNewSodiumAPI() && !$dontFallback) { + return (string) sodium_pad($unpadded, $blockSize); + } + + if ($blockSize <= 0) { + throw new SodiumException( + 'block size cannot be less than 1' + ); + } + $unpadded_len = ParagonIE_Sodium_Core_Util::strlen($unpadded); + $xpadlen = ($blockSize - 1); + if (($blockSize & ($blockSize - 1)) === 0) { + $xpadlen -= $unpadded_len & ($blockSize - 1); + } else { + $xpadlen -= $unpadded_len % $blockSize; + } + + $xpadded_len = $unpadded_len + $xpadlen; + $padded = str_repeat("\0", $xpadded_len - 1); + if ($unpadded_len > 0) { + $st = 1; + $i = 0; + $k = $unpadded_len; + for ($j = 0; $j <= $xpadded_len; ++$j) { + $i = (int) $i; + $k = (int) $k; + $st = (int) $st; + if ($j >= $unpadded_len) { + $padded[$j] = "\0"; + } else { + $padded[$j] = $unpadded[$j]; + } + /** @var int $k */ + $k -= $st; + $st = (int) (~( + ( + ( + ($k >> 48) + | + ($k >> 32) + | + ($k >> 16) + | + $k + ) - 1 + ) >> 16 + ) + ) & 1; + $i += $st; + } + } + + $mask = 0; + $tail = $xpadded_len; + for ($i = 0; $i < $blockSize; ++$i) { + # barrier_mask = (unsigned char) + # (((i ^ xpadlen) - 1U) >> ((sizeof(size_t) - 1U) * CHAR_BIT)); + $barrier_mask = (($i ^ $xpadlen) -1) >> ((PHP_INT_SIZE << 3) - 1); + # tail[-i] = (tail[-i] & mask) | (0x80 & barrier_mask); + $padded[$tail - $i] = ParagonIE_Sodium_Core_Util::intToChr( + (ParagonIE_Sodium_Core_Util::chrToInt($padded[$tail - $i]) & $mask) + | + (0x80 & $barrier_mask) + ); + # mask |= barrier_mask; + $mask |= $barrier_mask; + } + return $padded; + } + + /** + * @param string $padded + * @param int $blockSize + * @param bool $dontFallback + * @return string + * @throws SodiumException + */ + public static function unpad($padded, $blockSize, $dontFallback = false) + { + /* Type checks: */ + ParagonIE_Sodium_Core_Util::declareScalarType($padded, 'string', 1); + ParagonIE_Sodium_Core_Util::declareScalarType($blockSize, 'int', 2); + + $padded = (string) $padded; + $blockSize = (int) $blockSize; + + if (self::useNewSodiumAPI() && !$dontFallback) { + return (string) sodium_unpad($padded, $blockSize); + } + if ($blockSize <= 0) { + throw new SodiumException('block size cannot be less than 1'); + } + $padded_len = ParagonIE_Sodium_Core_Util::strlen($padded); + if ($padded_len < $blockSize) { + throw new SodiumException('invalid padding'); + } + + # tail = &padded[padded_len - 1U]; + $tail = $padded_len - 1; + + $acc = 0; + $valid = 0; + $pad_len = 0; + + $found = 0; + for ($i = 0; $i < $blockSize; ++$i) { + # c = tail[-i]; + $c = ParagonIE_Sodium_Core_Util::chrToInt($padded[$tail - $i]); + + # is_barrier = + # (( (acc - 1U) & (pad_len - 1U) & ((c ^ 0x80) - 1U) ) >> 8) & 1U; + $is_barrier = ( + ( + ($acc - 1) & ($pad_len - 1) & (($c ^ 80) - 1) + ) >> 7 + ) & 1; + $is_barrier &= ~$found; + $found |= $is_barrier; + + # acc |= c; + $acc |= $c; + + # pad_len |= i & (1U + ~is_barrier); + $pad_len |= $i & (1 + ~$is_barrier); + + # valid |= (unsigned char) is_barrier; + $valid |= ($is_barrier & 0xff); + } + # unpadded_len = padded_len - 1U - pad_len; + $unpadded_len = $padded_len - 1 - $pad_len; + if ($valid !== 1) { + throw new SodiumException('invalid padding'); + } + return ParagonIE_Sodium_Core_Util::substr($padded, 0, $unpadded_len); + } + + /** + * Will sodium_compat run fast on the current hardware and PHP configuration? + * + * @return bool + */ + public static function polyfill_is_fast() + { + if (extension_loaded('sodium')) { + return true; + } + if (extension_loaded('libsodium')) { + return true; + } + return PHP_INT_SIZE === 8; + } + + /** + * Generate a string of bytes from the kernel's CSPRNG. + * Proudly uses /dev/urandom (if getrandom(2) is not available). + * + * @param int $numBytes + * @return string + * @throws Exception + * @throws TypeError + */ + public static function randombytes_buf($numBytes) + { + /* Type checks: */ + if (!is_int($numBytes)) { + if (is_numeric($numBytes)) { + $numBytes = (int) $numBytes; + } else { + throw new TypeError( + 'Argument 1 must be an integer, ' . gettype($numBytes) . ' given.' + ); + } + } + /** @var positive-int $numBytes */ + if (self::use_fallback('randombytes_buf')) { + return (string) call_user_func('\\Sodium\\randombytes_buf', $numBytes); + } + if ($numBytes < 0) { + throw new SodiumException("Number of bytes must be a positive integer"); + } + return random_bytes($numBytes); + } + + /** + * Generate an integer between 0 and $range (non-inclusive). + * + * @param int $range + * @return int + * @throws Exception + * @throws Error + * @throws TypeError + */ + public static function randombytes_uniform($range) + { + /* Type checks: */ + if (!is_int($range)) { + if (is_numeric($range)) { + $range = (int) $range; + } else { + throw new TypeError( + 'Argument 1 must be an integer, ' . gettype($range) . ' given.' + ); + } + } + if (self::use_fallback('randombytes_uniform')) { + return (int) call_user_func('\\Sodium\\randombytes_uniform', $range); + } + return random_int(0, $range - 1); + } + + /** + * Generate a random 16-bit integer. + * + * @return int + * @throws Exception + * @throws Error + * @throws TypeError + */ + public static function randombytes_random16() + { + if (self::use_fallback('randombytes_random16')) { + return (int) call_user_func('\\Sodium\\randombytes_random16'); + } + return random_int(0, 65535); + } + + /** + * @param string $p + * @param bool $dontFallback + * @return bool + * @throws SodiumException + */ + public static function ristretto255_is_valid_point($p, $dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_core_ristretto255_is_valid_point($p); + } + try { + $r = ParagonIE_Sodium_Core_Ristretto255::ristretto255_frombytes($p); + return $r['res'] === 0 && + ParagonIE_Sodium_Core_Ristretto255::ristretto255_point_is_canonical($p) === 1; + } catch (SodiumException $ex) { + if ($ex->getMessage() === 'S is not canonical') { + return false; + } + throw $ex; + } + } + + /** + * @param string $p + * @param string $q + * @param bool $dontFallback + * @return string + * @throws SodiumException + */ + public static function ristretto255_add($p, $q, $dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_core_ristretto255_add($p, $q); + } + return ParagonIE_Sodium_Core_Ristretto255::ristretto255_add($p, $q); + } + + /** + * @param string $p + * @param string $q + * @param bool $dontFallback + * @return string + * @throws SodiumException + */ + public static function ristretto255_sub($p, $q, $dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_core_ristretto255_sub($p, $q); + } + return ParagonIE_Sodium_Core_Ristretto255::ristretto255_sub($p, $q); + } + + /** + * @param string $r + * @param bool $dontFallback + * @return string + * + * @throws SodiumException + */ + public static function ristretto255_from_hash($r, $dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_core_ristretto255_from_hash($r); + } + return ParagonIE_Sodium_Core_Ristretto255::ristretto255_from_hash($r); + } + + /** + * @param bool $dontFallback + * @return string + * + * @throws SodiumException + */ + public static function ristretto255_random($dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_core_ristretto255_random(); + } + return ParagonIE_Sodium_Core_Ristretto255::ristretto255_random(); + } + + /** + * @param bool $dontFallback + * @return string + * + * @throws SodiumException + */ + public static function ristretto255_scalar_random($dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_core_ristretto255_scalar_random(); + } + return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_random(); + } + + /** + * @param string $s + * @param bool $dontFallback + * @return string + * @throws SodiumException + */ + public static function ristretto255_scalar_invert($s, $dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_core_ristretto255_scalar_invert($s); + } + return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_invert($s); + } + /** + * @param string $s + * @param bool $dontFallback + * @return string + * @throws SodiumException + */ + public static function ristretto255_scalar_negate($s, $dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_core_ristretto255_scalar_negate($s); + } + return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_negate($s); + } + + /** + * @param string $s + * @param bool $dontFallback + * @return string + * @throws SodiumException + */ + public static function ristretto255_scalar_complement($s, $dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_core_ristretto255_scalar_complement($s); + } + return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_complement($s); + } + + /** + * @param string $x + * @param string $y + * @param bool $dontFallback + * @return string + * @throws SodiumException + */ + public static function ristretto255_scalar_add($x, $y, $dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_core_ristretto255_scalar_add($x, $y); + } + return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_add($x, $y); + } + + /** + * @param string $x + * @param string $y + * @param bool $dontFallback + * @return string + * @throws SodiumException + */ + public static function ristretto255_scalar_sub($x, $y, $dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_core_ristretto255_scalar_sub($x, $y); + } + return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_sub($x, $y); + } + + /** + * @param string $x + * @param string $y + * @param bool $dontFallback + * @return string + * @throws SodiumException + */ + public static function ristretto255_scalar_mul($x, $y, $dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_core_ristretto255_scalar_mul($x, $y); + } + return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_mul($x, $y); + } + + /** + * @param string $n + * @param string $p + * @param bool $dontFallback + * @return string + * @throws SodiumException + */ + public static function scalarmult_ristretto255($n, $p, $dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_scalarmult_ristretto255($n, $p); + } + return ParagonIE_Sodium_Core_Ristretto255::scalarmult_ristretto255($n, $p); + } + + /** + * @param string $n + * @param string $p + * @param bool $dontFallback + * @return string + * @throws SodiumException + */ + public static function scalarmult_ristretto255_base($n, $dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_scalarmult_ristretto255_base($n); + } + return ParagonIE_Sodium_Core_Ristretto255::scalarmult_ristretto255_base($n); + } + + /** + * @param string $s + * @param bool $dontFallback + * @return string + * @throws SodiumException + */ + public static function ristretto255_scalar_reduce($s, $dontFallback = false) + { + if (self::useNewSodiumAPI() && !$dontFallback) { + return sodium_crypto_core_ristretto255_scalar_reduce($s); + } + return ParagonIE_Sodium_Core_Ristretto255::sc_reduce($s); + } + + /** + * Runtime testing method for 32-bit platforms. + * + * Usage: If runtime_speed_test() returns FALSE, then our 32-bit + * implementation is to slow to use safely without risking timeouts. + * If this happens, install sodium from PECL to get acceptable + * performance. + * + * @param int $iterations Number of multiplications to attempt + * @param int $maxTimeout Milliseconds + * @return bool TRUE if we're fast enough, FALSE is not + * @throws SodiumException + */ + public static function runtime_speed_test($iterations, $maxTimeout) + { + if (self::polyfill_is_fast()) { + return true; + } + /** @var float $end */ + $end = 0.0; + /** @var float $start */ + $start = microtime(true); + /** @var ParagonIE_Sodium_Core32_Int64 $a */ + $a = ParagonIE_Sodium_Core32_Int64::fromInt(random_int(3, 1 << 16)); + for ($i = 0; $i < $iterations; ++$i) { + /** @var ParagonIE_Sodium_Core32_Int64 $b */ + $b = ParagonIE_Sodium_Core32_Int64::fromInt(random_int(3, 1 << 16)); + $a->mulInt64($b); + } + /** @var float $end */ + $end = microtime(true); + /** @var int $diff */ + $diff = (int) ceil(($end - $start) * 1000); + return $diff < $maxTimeout; + } + + /** + * Add two numbers (little-endian unsigned), storing the value in the first + * parameter. + * + * This mutates $val. + * + * @param string $val + * @param string $addv + * @return void + * @throws SodiumException + */ + public static function sub(&$val, $addv) + { + $val_len = ParagonIE_Sodium_Core_Util::strlen($val); + $addv_len = ParagonIE_Sodium_Core_Util::strlen($addv); + if ($val_len !== $addv_len) { + throw new SodiumException('values must have the same length'); + } + $A = ParagonIE_Sodium_Core_Util::stringToIntArray($val); + $B = ParagonIE_Sodium_Core_Util::stringToIntArray($addv); + + $c = 0; + for ($i = 0; $i < $val_len; $i++) { + $c = ($A[$i] - $B[$i] - $c); + $A[$i] = ($c & 0xff); + $c = ($c >> 8) & 1; + } + $val = ParagonIE_Sodium_Core_Util::intArrayToString($A); + } + + /** + * This emulates libsodium's version_string() function, except ours is + * prefixed with 'polyfill-'. + * + * @return string + * @psalm-suppress MixedInferredReturnType + * @psalm-suppress UndefinedFunction + */ + public static function version_string() + { + if (self::useNewSodiumAPI()) { + return (string) sodium_version_string(); + } + if (self::use_fallback('version_string')) { + return (string) call_user_func('\\Sodium\\version_string'); + } + return (string) self::VERSION_STRING; + } + + /** + * Should we use the libsodium core function instead? + * This is always a good idea, if it's available. (Unless we're in the + * middle of running our unit test suite.) + * + * If ext/libsodium is available, use it. Return TRUE. + * Otherwise, we have to use the code provided herein. Return FALSE. + * + * @param string $sodium_func_name + * + * @return bool + */ + protected static function use_fallback($sodium_func_name = '') + { + static $res = null; + if ($res === null) { + $res = extension_loaded('libsodium') && PHP_VERSION_ID >= 50300; + } + if ($res === false) { + // No libsodium installed + return false; + } + if (self::$disableFallbackForUnitTests) { + // Don't fallback. Use the PHP implementation. + return false; + } + if (!empty($sodium_func_name)) { + return is_callable('\\Sodium\\' . $sodium_func_name); + } + return true; + } + + /** + * Libsodium as implemented in PHP 7.2 + * and/or ext/sodium (via PECL) + * + * @ref https://wiki.php.net/rfc/libsodium + * @return bool + */ + protected static function useNewSodiumAPI() + { + static $res = null; + if ($res === null) { + $res = PHP_VERSION_ID >= 70000 && extension_loaded('sodium'); + } + if (self::$disableFallbackForUnitTests) { + // Don't fallback. Use the PHP implementation. + return false; + } + return (bool) $res; + } +} diff --git a/vendor/paragonie/sodium_compat/src/Core/BLAKE2b.php b/vendor/paragonie/sodium_compat/src/Core/BLAKE2b.php index 99bae98..6ad4ab7 100644 --- a/vendor/paragonie/sodium_compat/src/Core/BLAKE2b.php +++ b/vendor/paragonie/sodium_compat/src/Core/BLAKE2b.php @@ -1,790 +1,797 @@ -<?php
-
-if (class_exists('ParagonIE_Sodium_Core_BLAKE2b', false)) {
- return;
-}
-
-/**
- * Class ParagonIE_Sodium_Core_BLAKE2b
- *
- * Based on the work of Devi Mandiri in devi/salt.
- */
-abstract class ParagonIE_Sodium_Core_BLAKE2b extends ParagonIE_Sodium_Core_Util
-{
- /**
- * @var SplFixedArray
- */
- protected static $iv;
-
- /**
- * @var array<int, array<int, int>>
- */
- protected static $sigma = array(
- array( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
- array( 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3),
- array( 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4),
- array( 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8),
- array( 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13),
- array( 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9),
- array( 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11),
- array( 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10),
- array( 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5),
- array( 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0),
- array( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
- array( 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3)
- );
-
- const BLOCKBYTES = 128;
- const OUTBYTES = 64;
- const KEYBYTES = 64;
-
- /**
- * Turn two 32-bit integers into a fixed array representing a 64-bit integer.
- *
- * @internal You should not use this directly from another application
- *
- * @param int $high
- * @param int $low
- * @return SplFixedArray
- * @psalm-suppress MixedAssignment
- */
- public static function new64($high, $low)
- {
- $i64 = new SplFixedArray(2);
- $i64[0] = $high & 0xffffffff;
- $i64[1] = $low & 0xffffffff;
- return $i64;
- }
-
- /**
- * Convert an arbitrary number into an SplFixedArray of two 32-bit integers
- * that represents a 64-bit integer.
- *
- * @internal You should not use this directly from another application
- *
- * @param int $num
- * @return SplFixedArray
- */
- protected static function to64($num)
- {
- list($hi, $lo) = self::numericTo64BitInteger($num);
- return self::new64($hi, $lo);
- }
-
- /**
- * Adds two 64-bit integers together, returning their sum as a SplFixedArray
- * containing two 32-bit integers (representing a 64-bit integer).
- *
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $x
- * @param SplFixedArray $y
- * @return SplFixedArray
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedOperand
- */
- protected static function add64($x, $y)
- {
- $l = ($x[1] + $y[1]) & 0xffffffff;
- return self::new64(
- (int) ($x[0] + $y[0] + (
- ($l < $x[1]) ? 1 : 0
- )),
- (int) $l
- );
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $x
- * @param SplFixedArray $y
- * @param SplFixedArray $z
- * @return SplFixedArray
- */
- protected static function add364($x, $y, $z)
- {
- return self::add64($x, self::add64($y, $z));
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $x
- * @param SplFixedArray $y
- * @return SplFixedArray
- * @throws SodiumException
- * @throws TypeError
- */
- protected static function xor64(SplFixedArray $x, SplFixedArray $y)
- {
- if (!is_numeric($x[0])) {
- throw new SodiumException('x[0] is not an integer');
- }
- if (!is_numeric($x[1])) {
- throw new SodiumException('x[1] is not an integer');
- }
- if (!is_numeric($y[0])) {
- throw new SodiumException('y[0] is not an integer');
- }
- if (!is_numeric($y[1])) {
- throw new SodiumException('y[1] is not an integer');
- }
- return self::new64(
- (int) (($x[0] ^ $y[0]) & 0xffffffff),
- (int) (($x[1] ^ $y[1]) & 0xffffffff)
- );
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $x
- * @param int $c
- * @return SplFixedArray
- * @psalm-suppress MixedAssignment
- */
- public static function rotr64($x, $c)
- {
- if ($c >= 64) {
- $c %= 64;
- }
- if ($c >= 32) {
- /** @var int $tmp */
- $tmp = $x[0];
- $x[0] = $x[1];
- $x[1] = $tmp;
- $c -= 32;
- }
- if ($c === 0) {
- return $x;
- }
-
- $l0 = 0;
- $c = 64 - $c;
-
- if ($c < 32) {
- /** @var int $h0 */
- $h0 = ((int) ($x[0]) << $c) | (
- (
- (int) ($x[1]) & ((1 << $c) - 1)
- <<
- (32 - $c)
- ) >> (32 - $c)
- );
- /** @var int $l0 */
- $l0 = (int) ($x[1]) << $c;
- } else {
- /** @var int $h0 */
- $h0 = (int) ($x[1]) << ($c - 32);
- }
-
- $h1 = 0;
- $c1 = 64 - $c;
-
- if ($c1 < 32) {
- /** @var int $h1 */
- $h1 = (int) ($x[0]) >> $c1;
- /** @var int $l1 */
- $l1 = ((int) ($x[1]) >> $c1) | ((int) ($x[0]) & ((1 << $c1) - 1)) << (32 - $c1);
- } else {
- /** @var int $l1 */
- $l1 = (int) ($x[0]) >> ($c1 - 32);
- }
-
- return self::new64($h0 | $h1, $l0 | $l1);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $x
- * @return int
- * @psalm-suppress MixedOperand
- */
- protected static function flatten64($x)
- {
- return (int) ($x[0] * 4294967296 + $x[1]);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $x
- * @param int $i
- * @return SplFixedArray
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedArrayOffset
- */
- protected static function load64(SplFixedArray $x, $i)
- {
- /** @var int $l */
- $l = (int) ($x[$i])
- | ((int) ($x[$i+1]) << 8)
- | ((int) ($x[$i+2]) << 16)
- | ((int) ($x[$i+3]) << 24);
- /** @var int $h */
- $h = (int) ($x[$i+4])
- | ((int) ($x[$i+5]) << 8)
- | ((int) ($x[$i+6]) << 16)
- | ((int) ($x[$i+7]) << 24);
- return self::new64($h, $l);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $x
- * @param int $i
- * @param SplFixedArray $u
- * @return void
- * @psalm-suppress MixedAssignment
- */
- protected static function store64(SplFixedArray $x, $i, SplFixedArray $u)
- {
- $maxLength = $x->getSize() - 1;
- for ($j = 0; $j < 8; ++$j) {
- /*
- [0, 1, 2, 3, 4, 5, 6, 7]
- ... becomes ...
- [0, 0, 0, 0, 1, 1, 1, 1]
- */
- /** @var int $uIdx */
- $uIdx = ((7 - $j) & 4) >> 2;
- $x[$i] = ((int) ($u[$uIdx]) & 0xff);
- if (++$i > $maxLength) {
- return;
- }
- /** @psalm-suppress MixedOperand */
- $u[$uIdx] >>= 8;
- }
- }
-
- /**
- * This just sets the $iv static variable.
- *
- * @internal You should not use this directly from another application
- *
- * @return void
- */
- public static function pseudoConstructor()
- {
- static $called = false;
- if ($called) {
- return;
- }
- self::$iv = new SplFixedArray(8);
- self::$iv[0] = self::new64(0x6a09e667, 0xf3bcc908);
- self::$iv[1] = self::new64(0xbb67ae85, 0x84caa73b);
- self::$iv[2] = self::new64(0x3c6ef372, 0xfe94f82b);
- self::$iv[3] = self::new64(0xa54ff53a, 0x5f1d36f1);
- self::$iv[4] = self::new64(0x510e527f, 0xade682d1);
- self::$iv[5] = self::new64(0x9b05688c, 0x2b3e6c1f);
- self::$iv[6] = self::new64(0x1f83d9ab, 0xfb41bd6b);
- self::$iv[7] = self::new64(0x5be0cd19, 0x137e2179);
-
- $called = true;
- }
-
- /**
- * Returns a fresh BLAKE2 context.
- *
- * @internal You should not use this directly from another application
- *
- * @return SplFixedArray
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- */
- protected static function context()
- {
- $ctx = new SplFixedArray(6);
- $ctx[0] = new SplFixedArray(8); // h
- $ctx[1] = new SplFixedArray(2); // t
- $ctx[2] = new SplFixedArray(2); // f
- $ctx[3] = new SplFixedArray(256); // buf
- $ctx[4] = 0; // buflen
- $ctx[5] = 0; // last_node (uint8_t)
-
- for ($i = 8; $i--;) {
- $ctx[0][$i] = self::$iv[$i];
- }
- for ($i = 256; $i--;) {
- $ctx[3][$i] = 0;
- }
-
- $zero = self::new64(0, 0);
- $ctx[1][0] = $zero;
- $ctx[1][1] = $zero;
- $ctx[2][0] = $zero;
- $ctx[2][1] = $zero;
-
- return $ctx;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $ctx
- * @param SplFixedArray $buf
- * @return void
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- * @psalm-suppress MixedArrayOffset
- */
- protected static function compress(SplFixedArray $ctx, SplFixedArray $buf)
- {
- $m = new SplFixedArray(16);
- $v = new SplFixedArray(16);
-
- for ($i = 16; $i--;) {
- $m[$i] = self::load64($buf, $i << 3);
- }
-
- for ($i = 8; $i--;) {
- $v[$i] = $ctx[0][$i];
- }
-
- $v[ 8] = self::$iv[0];
- $v[ 9] = self::$iv[1];
- $v[10] = self::$iv[2];
- $v[11] = self::$iv[3];
-
- $v[12] = self::xor64($ctx[1][0], self::$iv[4]);
- $v[13] = self::xor64($ctx[1][1], self::$iv[5]);
- $v[14] = self::xor64($ctx[2][0], self::$iv[6]);
- $v[15] = self::xor64($ctx[2][1], self::$iv[7]);
-
- for ($r = 0; $r < 12; ++$r) {
- $v = self::G($r, 0, 0, 4, 8, 12, $v, $m);
- $v = self::G($r, 1, 1, 5, 9, 13, $v, $m);
- $v = self::G($r, 2, 2, 6, 10, 14, $v, $m);
- $v = self::G($r, 3, 3, 7, 11, 15, $v, $m);
- $v = self::G($r, 4, 0, 5, 10, 15, $v, $m);
- $v = self::G($r, 5, 1, 6, 11, 12, $v, $m);
- $v = self::G($r, 6, 2, 7, 8, 13, $v, $m);
- $v = self::G($r, 7, 3, 4, 9, 14, $v, $m);
- }
-
- for ($i = 8; $i--;) {
- $ctx[0][$i] = self::xor64(
- $ctx[0][$i], self::xor64($v[$i], $v[$i+8])
- );
- }
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param int $r
- * @param int $i
- * @param int $a
- * @param int $b
- * @param int $c
- * @param int $d
- * @param SplFixedArray $v
- * @param SplFixedArray $m
- * @return SplFixedArray
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedArrayOffset
- */
- public static function G($r, $i, $a, $b, $c, $d, SplFixedArray $v, SplFixedArray $m)
- {
- $v[$a] = self::add364($v[$a], $v[$b], $m[self::$sigma[$r][$i << 1]]);
- $v[$d] = self::rotr64(self::xor64($v[$d], $v[$a]), 32);
- $v[$c] = self::add64($v[$c], $v[$d]);
- $v[$b] = self::rotr64(self::xor64($v[$b], $v[$c]), 24);
- $v[$a] = self::add364($v[$a], $v[$b], $m[self::$sigma[$r][($i << 1) + 1]]);
- $v[$d] = self::rotr64(self::xor64($v[$d], $v[$a]), 16);
- $v[$c] = self::add64($v[$c], $v[$d]);
- $v[$b] = self::rotr64(self::xor64($v[$b], $v[$c]), 63);
- return $v;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $ctx
- * @param int $inc
- * @return void
- * @throws SodiumException
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- */
- public static function increment_counter($ctx, $inc)
- {
- if ($inc < 0) {
- throw new SodiumException('Increasing by a negative number makes no sense.');
- }
- $t = self::to64($inc);
- # S->t is $ctx[1] in our implementation
-
- # S->t[0] = ( uint64_t )( t >> 0 );
- $ctx[1][0] = self::add64($ctx[1][0], $t);
-
- # S->t[1] += ( S->t[0] < inc );
- if (self::flatten64($ctx[1][0]) < $inc) {
- $ctx[1][1] = self::add64($ctx[1][1], self::to64(1));
- }
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $ctx
- * @param SplFixedArray $p
- * @param int $plen
- * @return void
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- * @psalm-suppress MixedArrayOffset
- * @psalm-suppress MixedOperand
- */
- public static function update(SplFixedArray $ctx, SplFixedArray $p, $plen)
- {
- self::pseudoConstructor();
-
- $offset = 0;
- while ($plen > 0) {
- $left = $ctx[4];
- $fill = 256 - $left;
-
- if ($plen > $fill) {
- # memcpy( S->buf + left, in, fill ); /* Fill buffer */
- for ($i = $fill; $i--;) {
- $ctx[3][$i + $left] = $p[$i + $offset];
- }
-
- # S->buflen += fill;
- $ctx[4] += $fill;
-
- # blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
- self::increment_counter($ctx, 128);
-
- # blake2b_compress( S, S->buf ); /* Compress */
- self::compress($ctx, $ctx[3]);
-
- # memcpy( S->buf, S->buf + BLAKE2B_BLOCKBYTES, BLAKE2B_BLOCKBYTES ); /* Shift buffer left */
- for ($i = 128; $i--;) {
- $ctx[3][$i] = $ctx[3][$i + 128];
- }
-
- # S->buflen -= BLAKE2B_BLOCKBYTES;
- $ctx[4] -= 128;
-
- # in += fill;
- $offset += $fill;
-
- # inlen -= fill;
- $plen -= $fill;
- } else {
- for ($i = $plen; $i--;) {
- $ctx[3][$i + $left] = $p[$i + $offset];
- }
- $ctx[4] += $plen;
- $offset += $plen;
- $plen -= $plen;
- }
- }
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $ctx
- * @param SplFixedArray $out
- * @return SplFixedArray
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- * @psalm-suppress MixedArrayOffset
- * @psalm-suppress MixedOperand
- */
- public static function finish(SplFixedArray $ctx, SplFixedArray $out)
- {
- self::pseudoConstructor();
- if ($ctx[4] > 128) {
- self::increment_counter($ctx, 128);
- self::compress($ctx, $ctx[3]);
- $ctx[4] -= 128;
- if ($ctx[4] > 128) {
- throw new SodiumException('Failed to assert that buflen <= 128 bytes');
- }
- for ($i = $ctx[4]; $i--;) {
- $ctx[3][$i] = $ctx[3][$i + 128];
- }
- }
-
- self::increment_counter($ctx, $ctx[4]);
- $ctx[2][0] = self::new64(0xffffffff, 0xffffffff);
-
- for ($i = 256 - $ctx[4]; $i--;) {
- $ctx[3][$i+$ctx[4]] = 0;
- }
-
- self::compress($ctx, $ctx[3]);
-
- $i = (int) (($out->getSize() - 1) / 8);
- for (; $i >= 0; --$i) {
- self::store64($out, $i << 3, $ctx[0][$i]);
- }
- return $out;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray|null $key
- * @param int $outlen
- * @param SplFixedArray|null $salt
- * @param SplFixedArray|null $personal
- * @return SplFixedArray
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- * @psalm-suppress MixedArrayOffset
- */
- public static function init(
- $key = null,
- $outlen = 64,
- $salt = null,
- $personal = null
- ) {
- self::pseudoConstructor();
- $klen = 0;
-
- if ($key !== null) {
- if (count($key) > 64) {
- throw new SodiumException('Invalid key size');
- }
- $klen = count($key);
- }
-
- if ($outlen > 64) {
- throw new SodiumException('Invalid output size');
- }
-
- $ctx = self::context();
-
- $p = new SplFixedArray(64);
- // Zero our param buffer...
- for ($i = 64; --$i;) {
- $p[$i] = 0;
- }
-
- $p[0] = $outlen; // digest_length
- $p[1] = $klen; // key_length
- $p[2] = 1; // fanout
- $p[3] = 1; // depth
-
- if ($salt instanceof SplFixedArray) {
- // salt: [32] through [47]
- for ($i = 0; $i < 16; ++$i) {
- $p[32 + $i] = (int) $salt[$i];
- }
- }
- if ($personal instanceof SplFixedArray) {
- // personal: [48] through [63]
- for ($i = 0; $i < 16; ++$i) {
- $p[48 + $i] = (int) $personal[$i];
- }
- }
-
- $ctx[0][0] = self::xor64(
- $ctx[0][0],
- self::load64($p, 0)
- );
- if ($salt instanceof SplFixedArray || $personal instanceof SplFixedArray) {
- // We need to do what blake2b_init_param() does:
- for ($i = 1; $i < 8; ++$i) {
- $ctx[0][$i] = self::xor64(
- $ctx[0][$i],
- self::load64($p, $i << 3)
- );
- }
- }
-
- if ($klen > 0 && $key instanceof SplFixedArray) {
- $block = new SplFixedArray(128);
- for ($i = 128; $i--;) {
- $block[$i] = 0;
- }
- for ($i = $klen; $i--;) {
- $block[$i] = $key[$i];
- }
- self::update($ctx, $block, 128);
- $ctx[4] = 128;
- }
-
- return $ctx;
- }
-
- /**
- * Convert a string into an SplFixedArray of integers
- *
- * @internal You should not use this directly from another application
- *
- * @param string $str
- * @return SplFixedArray
- * @psalm-suppress MixedArgumentTypeCoercion
- */
- public static function stringToSplFixedArray($str = '')
- {
- $values = unpack('C*', $str);
- return SplFixedArray::fromArray(array_values($values));
- }
-
- /**
- * Convert an SplFixedArray of integers into a string
- *
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $a
- * @return string
- * @throws TypeError
- */
- public static function SplFixedArrayToString(SplFixedArray $a)
- {
- /**
- * @var array<int, int|string> $arr
- */
- $arr = $a->toArray();
- $c = $a->count();
- array_unshift($arr, str_repeat('C', $c));
- return (string) (call_user_func_array('pack', $arr));
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $ctx
- * @return string
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- * @psalm-suppress MixedArrayOffset
- * @psalm-suppress MixedMethodCall
- */
- public static function contextToString(SplFixedArray $ctx)
- {
- $str = '';
- /** @var array<int, array<int, int>> $ctxA */
- $ctxA = $ctx[0]->toArray();
-
- # uint64_t h[8];
- for ($i = 0; $i < 8; ++$i) {
- $str .= self::store32_le($ctxA[$i][1]);
- $str .= self::store32_le($ctxA[$i][0]);
- }
-
- # uint64_t t[2];
- # uint64_t f[2];
- for ($i = 1; $i < 3; ++$i) {
- $ctxA = $ctx[$i]->toArray();
- $str .= self::store32_le($ctxA[0][1]);
- $str .= self::store32_le($ctxA[0][0]);
- $str .= self::store32_le($ctxA[1][1]);
- $str .= self::store32_le($ctxA[1][0]);
- }
-
- # uint8_t buf[2 * 128];
- $str .= self::SplFixedArrayToString($ctx[3]);
-
- /** @var int $ctx4 */
- $ctx4 = (int) $ctx[4];
-
- # size_t buflen;
- $str .= implode('', array(
- self::intToChr($ctx4 & 0xff),
- self::intToChr(($ctx4 >> 8) & 0xff),
- self::intToChr(($ctx4 >> 16) & 0xff),
- self::intToChr(($ctx4 >> 24) & 0xff),
- self::intToChr(($ctx4 >> 32) & 0xff),
- self::intToChr(($ctx4 >> 40) & 0xff),
- self::intToChr(($ctx4 >> 48) & 0xff),
- self::intToChr(($ctx4 >> 56) & 0xff)
- ));
- # uint8_t last_node;
- return $str . self::intToChr($ctx[5]) . str_repeat("\x00", 23);
- }
-
- /**
- * Creates an SplFixedArray containing other SplFixedArray elements, from
- * a string (compatible with \Sodium\crypto_generichash_{init, update, final})
- *
- * @internal You should not use this directly from another application
- *
- * @param string $string
- * @return SplFixedArray
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArrayAssignment
- */
- public static function stringToContext($string)
- {
- $ctx = self::context();
-
- # uint64_t h[8];
- for ($i = 0; $i < 8; ++$i) {
- $ctx[0][$i] = SplFixedArray::fromArray(
- array(
- self::load_4(
- self::substr($string, (($i << 3) + 4), 4)
- ),
- self::load_4(
- self::substr($string, (($i << 3) + 0), 4)
- )
- )
- );
- }
-
- # uint64_t t[2];
- # uint64_t f[2];
- for ($i = 1; $i < 3; ++$i) {
- $ctx[$i][1] = SplFixedArray::fromArray(
- array(
- self::load_4(self::substr($string, 76 + (($i - 1) << 4), 4)),
- self::load_4(self::substr($string, 72 + (($i - 1) << 4), 4))
- )
- );
- $ctx[$i][0] = SplFixedArray::fromArray(
- array(
- self::load_4(self::substr($string, 68 + (($i - 1) << 4), 4)),
- self::load_4(self::substr($string, 64 + (($i - 1) << 4), 4))
- )
- );
- }
-
- # uint8_t buf[2 * 128];
- $ctx[3] = self::stringToSplFixedArray(self::substr($string, 96, 256));
-
- # uint8_t buf[2 * 128];
- $int = 0;
- for ($i = 0; $i < 8; ++$i) {
- $int |= self::chrToInt($string[352 + $i]) << ($i << 3);
- }
- $ctx[4] = $int;
-
- return $ctx;
- }
-}
+<?php + +if (class_exists('ParagonIE_Sodium_Core_BLAKE2b', false)) { + return; +} + +/** + * Class ParagonIE_Sodium_Core_BLAKE2b + * + * Based on the work of Devi Mandiri in devi/salt. + */ +abstract class ParagonIE_Sodium_Core_BLAKE2b extends ParagonIE_Sodium_Core_Util +{ + /** + * @var SplFixedArray + */ + protected static $iv; + + /** + * @var array<int, array<int, int>> + */ + protected static $sigma = array( + array( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15), + array( 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3), + array( 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4), + array( 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8), + array( 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13), + array( 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9), + array( 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11), + array( 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10), + array( 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5), + array( 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0), + array( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15), + array( 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3) + ); + + const BLOCKBYTES = 128; + const OUTBYTES = 64; + const KEYBYTES = 64; + + /** + * Turn two 32-bit integers into a fixed array representing a 64-bit integer. + * + * @internal You should not use this directly from another application + * + * @param int $high + * @param int $low + * @return SplFixedArray + * @psalm-suppress MixedAssignment + */ + public static function new64($high, $low) + { + if (PHP_INT_SIZE === 4) { + throw new SodiumException("Error, use 32-bit"); + } + $i64 = new SplFixedArray(2); + $i64[0] = $high & 0xffffffff; + $i64[1] = $low & 0xffffffff; + return $i64; + } + + /** + * Convert an arbitrary number into an SplFixedArray of two 32-bit integers + * that represents a 64-bit integer. + * + * @internal You should not use this directly from another application + * + * @param int $num + * @return SplFixedArray + */ + protected static function to64($num) + { + list($hi, $lo) = self::numericTo64BitInteger($num); + return self::new64($hi, $lo); + } + + /** + * Adds two 64-bit integers together, returning their sum as a SplFixedArray + * containing two 32-bit integers (representing a 64-bit integer). + * + * @internal You should not use this directly from another application + * + * @param SplFixedArray $x + * @param SplFixedArray $y + * @return SplFixedArray + * @psalm-suppress MixedArgument + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedOperand + */ + protected static function add64($x, $y) + { + if (PHP_INT_SIZE === 4) { + throw new SodiumException("Error, use 32-bit"); + } + $l = ($x[1] + $y[1]) & 0xffffffff; + return self::new64( + (int) ($x[0] + $y[0] + ( + ($l < $x[1]) ? 1 : 0 + )), + (int) $l + ); + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $x + * @param SplFixedArray $y + * @param SplFixedArray $z + * @return SplFixedArray + */ + protected static function add364($x, $y, $z) + { + return self::add64($x, self::add64($y, $z)); + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $x + * @param SplFixedArray $y + * @return SplFixedArray + * @throws SodiumException + * @throws TypeError + */ + protected static function xor64(SplFixedArray $x, SplFixedArray $y) + { + if (PHP_INT_SIZE === 4) { + throw new SodiumException("Error, use 32-bit"); + } + if (!is_numeric($x[0])) { + throw new SodiumException('x[0] is not an integer'); + } + if (!is_numeric($x[1])) { + throw new SodiumException('x[1] is not an integer'); + } + if (!is_numeric($y[0])) { + throw new SodiumException('y[0] is not an integer'); + } + if (!is_numeric($y[1])) { + throw new SodiumException('y[1] is not an integer'); + } + return self::new64( + (int) (($x[0] ^ $y[0]) & 0xffffffff), + (int) (($x[1] ^ $y[1]) & 0xffffffff) + ); + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $x + * @param int $c + * @return SplFixedArray + * @psalm-suppress MixedAssignment + */ + public static function rotr64($x, $c) + { + if (PHP_INT_SIZE === 4) { + throw new SodiumException("Error, use 32-bit"); + } + if ($c >= 64) { + $c %= 64; + } + if ($c >= 32) { + /** @var int $tmp */ + $tmp = $x[0]; + $x[0] = $x[1]; + $x[1] = $tmp; + $c -= 32; + } + if ($c === 0) { + return $x; + } + + $l0 = 0; + $c = 64 - $c; + + /** @var int $c */ + if ($c < 32) { + $h0 = ((int) ($x[0]) << $c) | ( + ( + (int) ($x[1]) & ((1 << $c) - 1) + << + (32 - $c) + ) >> (32 - $c) + ); + $l0 = (int) ($x[1]) << $c; + } else { + $h0 = (int) ($x[1]) << ($c - 32); + } + + $h1 = 0; + $c1 = 64 - $c; + + if ($c1 < 32) { + $h1 = (int) ($x[0]) >> $c1; + $l1 = ((int) ($x[1]) >> $c1) | ((int) ($x[0]) & ((1 << $c1) - 1)) << (32 - $c1); + } else { + $l1 = (int) ($x[0]) >> ($c1 - 32); + } + + return self::new64($h0 | $h1, $l0 | $l1); + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $x + * @return int + * @psalm-suppress MixedOperand + */ + protected static function flatten64($x) + { + return (int) ($x[0] * 4294967296 + $x[1]); + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $x + * @param int $i + * @return SplFixedArray + * @psalm-suppress MixedArgument + * @psalm-suppress MixedArrayOffset + */ + protected static function load64(SplFixedArray $x, $i) + { + /** @var int $l */ + $l = (int) ($x[$i]) + | ((int) ($x[$i+1]) << 8) + | ((int) ($x[$i+2]) << 16) + | ((int) ($x[$i+3]) << 24); + /** @var int $h */ + $h = (int) ($x[$i+4]) + | ((int) ($x[$i+5]) << 8) + | ((int) ($x[$i+6]) << 16) + | ((int) ($x[$i+7]) << 24); + return self::new64($h, $l); + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $x + * @param int $i + * @param SplFixedArray $u + * @return void + * @psalm-suppress MixedAssignment + */ + protected static function store64(SplFixedArray $x, $i, SplFixedArray $u) + { + $maxLength = $x->getSize() - 1; + for ($j = 0; $j < 8; ++$j) { + /* + [0, 1, 2, 3, 4, 5, 6, 7] + ... becomes ... + [0, 0, 0, 0, 1, 1, 1, 1] + */ + /** @var int $uIdx */ + $uIdx = ((7 - $j) & 4) >> 2; + $x[$i] = ((int) ($u[$uIdx]) & 0xff); + if (++$i > $maxLength) { + return; + } + /** @psalm-suppress MixedOperand */ + $u[$uIdx] >>= 8; + } + } + + /** + * This just sets the $iv static variable. + * + * @internal You should not use this directly from another application + * + * @return void + */ + public static function pseudoConstructor() + { + static $called = false; + if ($called) { + return; + } + self::$iv = new SplFixedArray(8); + self::$iv[0] = self::new64(0x6a09e667, 0xf3bcc908); + self::$iv[1] = self::new64(0xbb67ae85, 0x84caa73b); + self::$iv[2] = self::new64(0x3c6ef372, 0xfe94f82b); + self::$iv[3] = self::new64(0xa54ff53a, 0x5f1d36f1); + self::$iv[4] = self::new64(0x510e527f, 0xade682d1); + self::$iv[5] = self::new64(0x9b05688c, 0x2b3e6c1f); + self::$iv[6] = self::new64(0x1f83d9ab, 0xfb41bd6b); + self::$iv[7] = self::new64(0x5be0cd19, 0x137e2179); + + $called = true; + } + + /** + * Returns a fresh BLAKE2 context. + * + * @internal You should not use this directly from another application + * + * @return SplFixedArray + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + */ + protected static function context() + { + $ctx = new SplFixedArray(6); + $ctx[0] = new SplFixedArray(8); // h + $ctx[1] = new SplFixedArray(2); // t + $ctx[2] = new SplFixedArray(2); // f + $ctx[3] = new SplFixedArray(256); // buf + $ctx[4] = 0; // buflen + $ctx[5] = 0; // last_node (uint8_t) + + for ($i = 8; $i--;) { + $ctx[0][$i] = self::$iv[$i]; + } + for ($i = 256; $i--;) { + $ctx[3][$i] = 0; + } + + $zero = self::new64(0, 0); + $ctx[1][0] = $zero; + $ctx[1][1] = $zero; + $ctx[2][0] = $zero; + $ctx[2][1] = $zero; + + return $ctx; + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $ctx + * @param SplFixedArray $buf + * @return void + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + * @psalm-suppress MixedArrayOffset + */ + protected static function compress(SplFixedArray $ctx, SplFixedArray $buf) + { + $m = new SplFixedArray(16); + $v = new SplFixedArray(16); + + for ($i = 16; $i--;) { + $m[$i] = self::load64($buf, $i << 3); + } + + for ($i = 8; $i--;) { + $v[$i] = $ctx[0][$i]; + } + + $v[ 8] = self::$iv[0]; + $v[ 9] = self::$iv[1]; + $v[10] = self::$iv[2]; + $v[11] = self::$iv[3]; + + $v[12] = self::xor64($ctx[1][0], self::$iv[4]); + $v[13] = self::xor64($ctx[1][1], self::$iv[5]); + $v[14] = self::xor64($ctx[2][0], self::$iv[6]); + $v[15] = self::xor64($ctx[2][1], self::$iv[7]); + + for ($r = 0; $r < 12; ++$r) { + $v = self::G($r, 0, 0, 4, 8, 12, $v, $m); + $v = self::G($r, 1, 1, 5, 9, 13, $v, $m); + $v = self::G($r, 2, 2, 6, 10, 14, $v, $m); + $v = self::G($r, 3, 3, 7, 11, 15, $v, $m); + $v = self::G($r, 4, 0, 5, 10, 15, $v, $m); + $v = self::G($r, 5, 1, 6, 11, 12, $v, $m); + $v = self::G($r, 6, 2, 7, 8, 13, $v, $m); + $v = self::G($r, 7, 3, 4, 9, 14, $v, $m); + } + + for ($i = 8; $i--;) { + $ctx[0][$i] = self::xor64( + $ctx[0][$i], self::xor64($v[$i], $v[$i+8]) + ); + } + } + + /** + * @internal You should not use this directly from another application + * + * @param int $r + * @param int $i + * @param int $a + * @param int $b + * @param int $c + * @param int $d + * @param SplFixedArray $v + * @param SplFixedArray $m + * @return SplFixedArray + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedArrayOffset + */ + public static function G($r, $i, $a, $b, $c, $d, SplFixedArray $v, SplFixedArray $m) + { + $v[$a] = self::add364($v[$a], $v[$b], $m[self::$sigma[$r][$i << 1]]); + $v[$d] = self::rotr64(self::xor64($v[$d], $v[$a]), 32); + $v[$c] = self::add64($v[$c], $v[$d]); + $v[$b] = self::rotr64(self::xor64($v[$b], $v[$c]), 24); + $v[$a] = self::add364($v[$a], $v[$b], $m[self::$sigma[$r][($i << 1) + 1]]); + $v[$d] = self::rotr64(self::xor64($v[$d], $v[$a]), 16); + $v[$c] = self::add64($v[$c], $v[$d]); + $v[$b] = self::rotr64(self::xor64($v[$b], $v[$c]), 63); + return $v; + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $ctx + * @param int $inc + * @return void + * @throws SodiumException + * @psalm-suppress MixedArgument + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + */ + public static function increment_counter($ctx, $inc) + { + if ($inc < 0) { + throw new SodiumException('Increasing by a negative number makes no sense.'); + } + $t = self::to64($inc); + # S->t is $ctx[1] in our implementation + + # S->t[0] = ( uint64_t )( t >> 0 ); + $ctx[1][0] = self::add64($ctx[1][0], $t); + + # S->t[1] += ( S->t[0] < inc ); + if (self::flatten64($ctx[1][0]) < $inc) { + $ctx[1][1] = self::add64($ctx[1][1], self::to64(1)); + } + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $ctx + * @param SplFixedArray $p + * @param int $plen + * @return void + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + * @psalm-suppress MixedArrayOffset + * @psalm-suppress MixedOperand + */ + public static function update(SplFixedArray $ctx, SplFixedArray $p, $plen) + { + self::pseudoConstructor(); + + $offset = 0; + while ($plen > 0) { + $left = $ctx[4]; + $fill = 256 - $left; + + if ($plen > $fill) { + # memcpy( S->buf + left, in, fill ); /* Fill buffer */ + for ($i = $fill; $i--;) { + $ctx[3][$i + $left] = $p[$i + $offset]; + } + + # S->buflen += fill; + $ctx[4] += $fill; + + # blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES ); + self::increment_counter($ctx, 128); + + # blake2b_compress( S, S->buf ); /* Compress */ + self::compress($ctx, $ctx[3]); + + # memcpy( S->buf, S->buf + BLAKE2B_BLOCKBYTES, BLAKE2B_BLOCKBYTES ); /* Shift buffer left */ + for ($i = 128; $i--;) { + $ctx[3][$i] = $ctx[3][$i + 128]; + } + + # S->buflen -= BLAKE2B_BLOCKBYTES; + $ctx[4] -= 128; + + # in += fill; + $offset += $fill; + + # inlen -= fill; + $plen -= $fill; + } else { + for ($i = $plen; $i--;) { + $ctx[3][$i + $left] = $p[$i + $offset]; + } + $ctx[4] += $plen; + $offset += $plen; + $plen -= $plen; + } + } + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $ctx + * @param SplFixedArray $out + * @return SplFixedArray + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + * @psalm-suppress MixedArrayOffset + * @psalm-suppress MixedOperand + */ + public static function finish(SplFixedArray $ctx, SplFixedArray $out) + { + self::pseudoConstructor(); + if ($ctx[4] > 128) { + self::increment_counter($ctx, 128); + self::compress($ctx, $ctx[3]); + $ctx[4] -= 128; + if ($ctx[4] > 128) { + throw new SodiumException('Failed to assert that buflen <= 128 bytes'); + } + for ($i = $ctx[4]; $i--;) { + $ctx[3][$i] = $ctx[3][$i + 128]; + } + } + + self::increment_counter($ctx, $ctx[4]); + $ctx[2][0] = self::new64(0xffffffff, 0xffffffff); + + for ($i = 256 - $ctx[4]; $i--;) { + $ctx[3][$i+$ctx[4]] = 0; + } + + self::compress($ctx, $ctx[3]); + + $i = (int) (($out->getSize() - 1) / 8); + for (; $i >= 0; --$i) { + self::store64($out, $i << 3, $ctx[0][$i]); + } + return $out; + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray|null $key + * @param int $outlen + * @param SplFixedArray|null $salt + * @param SplFixedArray|null $personal + * @return SplFixedArray + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + * @psalm-suppress MixedArrayOffset + */ + public static function init( + $key = null, + $outlen = 64, + $salt = null, + $personal = null + ) { + self::pseudoConstructor(); + $klen = 0; + + if ($key !== null) { + if (count($key) > 64) { + throw new SodiumException('Invalid key size'); + } + $klen = count($key); + } + + if ($outlen > 64) { + throw new SodiumException('Invalid output size'); + } + + $ctx = self::context(); + + $p = new SplFixedArray(64); + // Zero our param buffer... + for ($i = 64; --$i;) { + $p[$i] = 0; + } + + $p[0] = $outlen; // digest_length + $p[1] = $klen; // key_length + $p[2] = 1; // fanout + $p[3] = 1; // depth + + if ($salt instanceof SplFixedArray) { + // salt: [32] through [47] + for ($i = 0; $i < 16; ++$i) { + $p[32 + $i] = (int) $salt[$i]; + } + } + if ($personal instanceof SplFixedArray) { + // personal: [48] through [63] + for ($i = 0; $i < 16; ++$i) { + $p[48 + $i] = (int) $personal[$i]; + } + } + + $ctx[0][0] = self::xor64( + $ctx[0][0], + self::load64($p, 0) + ); + if ($salt instanceof SplFixedArray || $personal instanceof SplFixedArray) { + // We need to do what blake2b_init_param() does: + for ($i = 1; $i < 8; ++$i) { + $ctx[0][$i] = self::xor64( + $ctx[0][$i], + self::load64($p, $i << 3) + ); + } + } + + if ($klen > 0 && $key instanceof SplFixedArray) { + $block = new SplFixedArray(128); + for ($i = 128; $i--;) { + $block[$i] = 0; + } + for ($i = $klen; $i--;) { + $block[$i] = $key[$i]; + } + self::update($ctx, $block, 128); + $ctx[4] = 128; + } + + return $ctx; + } + + /** + * Convert a string into an SplFixedArray of integers + * + * @internal You should not use this directly from another application + * + * @param string $str + * @return SplFixedArray + * @psalm-suppress MixedArgumentTypeCoercion + */ + public static function stringToSplFixedArray($str = '') + { + $values = unpack('C*', $str); + return SplFixedArray::fromArray(array_values($values)); + } + + /** + * Convert an SplFixedArray of integers into a string + * + * @internal You should not use this directly from another application + * + * @param SplFixedArray $a + * @return string + * @throws TypeError + */ + public static function SplFixedArrayToString(SplFixedArray $a) + { + /** + * @var array<int, int|string> $arr + */ + $arr = $a->toArray(); + $c = $a->count(); + array_unshift($arr, str_repeat('C', $c)); + return (string) (call_user_func_array('pack', $arr)); + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $ctx + * @return string + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + * @psalm-suppress MixedArrayOffset + * @psalm-suppress MixedMethodCall + */ + public static function contextToString(SplFixedArray $ctx) + { + $str = ''; + /** @var array<int, array<int, int>> $ctxA */ + $ctxA = $ctx[0]->toArray(); + + # uint64_t h[8]; + for ($i = 0; $i < 8; ++$i) { + $str .= self::store32_le($ctxA[$i][1]); + $str .= self::store32_le($ctxA[$i][0]); + } + + # uint64_t t[2]; + # uint64_t f[2]; + for ($i = 1; $i < 3; ++$i) { + $ctxA = $ctx[$i]->toArray(); + $str .= self::store32_le($ctxA[0][1]); + $str .= self::store32_le($ctxA[0][0]); + $str .= self::store32_le($ctxA[1][1]); + $str .= self::store32_le($ctxA[1][0]); + } + + # uint8_t buf[2 * 128]; + $str .= self::SplFixedArrayToString($ctx[3]); + + /** @var int $ctx4 */ + $ctx4 = (int) $ctx[4]; + + # size_t buflen; + $str .= implode('', array( + self::intToChr($ctx4 & 0xff), + self::intToChr(($ctx4 >> 8) & 0xff), + self::intToChr(($ctx4 >> 16) & 0xff), + self::intToChr(($ctx4 >> 24) & 0xff), + self::intToChr(($ctx4 >> 32) & 0xff), + self::intToChr(($ctx4 >> 40) & 0xff), + self::intToChr(($ctx4 >> 48) & 0xff), + self::intToChr(($ctx4 >> 56) & 0xff) + )); + # uint8_t last_node; + return $str . self::intToChr($ctx[5]) . str_repeat("\x00", 23); + } + + /** + * Creates an SplFixedArray containing other SplFixedArray elements, from + * a string (compatible with \Sodium\crypto_generichash_{init, update, final}) + * + * @internal You should not use this directly from another application + * + * @param string $string + * @return SplFixedArray + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArrayAssignment + */ + public static function stringToContext($string) + { + $ctx = self::context(); + + # uint64_t h[8]; + for ($i = 0; $i < 8; ++$i) { + $ctx[0][$i] = SplFixedArray::fromArray( + array( + self::load_4( + self::substr($string, (($i << 3) + 4), 4) + ), + self::load_4( + self::substr($string, (($i << 3) + 0), 4) + ) + ) + ); + } + + # uint64_t t[2]; + # uint64_t f[2]; + for ($i = 1; $i < 3; ++$i) { + $ctx[$i][1] = SplFixedArray::fromArray( + array( + self::load_4(self::substr($string, 76 + (($i - 1) << 4), 4)), + self::load_4(self::substr($string, 72 + (($i - 1) << 4), 4)) + ) + ); + $ctx[$i][0] = SplFixedArray::fromArray( + array( + self::load_4(self::substr($string, 68 + (($i - 1) << 4), 4)), + self::load_4(self::substr($string, 64 + (($i - 1) << 4), 4)) + ) + ); + } + + # uint8_t buf[2 * 128]; + $ctx[3] = self::stringToSplFixedArray(self::substr($string, 96, 256)); + + # uint8_t buf[2 * 128]; + $int = 0; + for ($i = 0; $i < 8; ++$i) { + $int |= self::chrToInt($string[352 + $i]) << ($i << 3); + } + $ctx[4] = $int; + + return $ctx; + } +} diff --git a/vendor/paragonie/sodium_compat/src/Core/ChaCha20/Ctx.php b/vendor/paragonie/sodium_compat/src/Core/ChaCha20/Ctx.php index 47a42b7..01e4c46 100644 --- a/vendor/paragonie/sodium_compat/src/Core/ChaCha20/Ctx.php +++ b/vendor/paragonie/sodium_compat/src/Core/ChaCha20/Ctx.php @@ -69,6 +69,7 @@ class ParagonIE_Sodium_Core_ChaCha20_Ctx extends ParagonIE_Sodium_Core_Util impl * @return void * @psalm-suppress MixedArrayOffset */ + #[ReturnTypeWillChange] public function offsetSet($offset, $value) { if (!is_int($offset)) { @@ -86,6 +87,7 @@ class ParagonIE_Sodium_Core_ChaCha20_Ctx extends ParagonIE_Sodium_Core_Util impl * @param int $offset * @return bool */ + #[ReturnTypeWillChange] public function offsetExists($offset) { return isset($this->container[$offset]); @@ -98,6 +100,7 @@ class ParagonIE_Sodium_Core_ChaCha20_Ctx extends ParagonIE_Sodium_Core_Util impl * @return void * @psalm-suppress MixedArrayOffset */ + #[ReturnTypeWillChange] public function offsetUnset($offset) { unset($this->container[$offset]); @@ -110,6 +113,7 @@ class ParagonIE_Sodium_Core_ChaCha20_Ctx extends ParagonIE_Sodium_Core_Util impl * @return mixed|null * @psalm-suppress MixedArrayOffset */ + #[ReturnTypeWillChange] public function offsetGet($offset) { return isset($this->container[$offset]) diff --git a/vendor/paragonie/sodium_compat/src/Core/Curve25519.php b/vendor/paragonie/sodium_compat/src/Core/Curve25519.php index f0b9c5f..dfcf26a 100644 --- a/vendor/paragonie/sodium_compat/src/Core/Curve25519.php +++ b/vendor/paragonie/sodium_compat/src/Core/Curve25519.php @@ -1,4106 +1,3836 @@ -<?php
-
-if (class_exists('ParagonIE_Sodium_Core_Curve25519', false)) {
- return;
-}
-
-/**
- * Class ParagonIE_Sodium_Core_Curve25519
- *
- * Implements Curve25519 core functions
- *
- * Based on the ref10 curve25519 code provided by libsodium
- *
- * @ref https://github.com/jedisct1/libsodium/blob/master/src/libsodium/crypto_core/curve25519/ref10/curve25519_ref10.c
- */
-abstract class ParagonIE_Sodium_Core_Curve25519 extends ParagonIE_Sodium_Core_Curve25519_H
-{
- /**
- * Get a field element of size 10 with a value of 0
- *
- * @internal You should not use this directly from another application
- *
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- */
- public static function fe_0()
- {
- return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(
- array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
- );
- }
-
- /**
- * Get a field element of size 10 with a value of 1
- *
- * @internal You should not use this directly from another application
- *
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- */
- public static function fe_1()
- {
- return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(
- array(1, 0, 0, 0, 0, 0, 0, 0, 0, 0)
- );
- }
-
- /**
- * Add two field elements.
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $f
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $g
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedOperand
- */
- public static function fe_add(
- ParagonIE_Sodium_Core_Curve25519_Fe $f,
- ParagonIE_Sodium_Core_Curve25519_Fe $g
- ) {
- /** @var array<int, int> $arr */
- $arr = array();
- for ($i = 0; $i < 10; ++$i) {
- $arr[$i] = (int) ($f[$i] + $g[$i]);
- }
- return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray($arr);
- }
-
- /**
- * Constant-time conditional move.
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $f
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $g
- * @param int $b
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- * @psalm-suppress MixedAssignment
- */
- public static function fe_cmov(
- ParagonIE_Sodium_Core_Curve25519_Fe $f,
- ParagonIE_Sodium_Core_Curve25519_Fe $g,
- $b = 0
- ) {
- /** @var array<int, int> $h */
- $h = array();
- $b *= -1;
- for ($i = 0; $i < 10; ++$i) {
- $x = (($f[$i] ^ $g[$i]) & $b);
- $h[$i] = ($f[$i]) ^ $x;
- }
- return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray($h);
- }
-
- /**
- * Create a copy of a field element.
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $f
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- */
- public static function fe_copy(ParagonIE_Sodium_Core_Curve25519_Fe $f)
- {
- $h = clone $f;
- return $h;
- }
-
- /**
- * Give: 32-byte string.
- * Receive: A field element object to use for internal calculations.
- *
- * @internal You should not use this directly from another application
- *
- * @param string $s
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- * @throws RangeException
- * @throws TypeError
- */
- public static function fe_frombytes($s)
- {
- if (self::strlen($s) !== 32) {
- throw new RangeException('Expected a 32-byte string.');
- }
- /** @var int $h0 */
- $h0 = self::load_4($s);
- /** @var int $h1 */
- $h1 = self::load_3(self::substr($s, 4, 3)) << 6;
- /** @var int $h2 */
- $h2 = self::load_3(self::substr($s, 7, 3)) << 5;
- /** @var int $h3 */
- $h3 = self::load_3(self::substr($s, 10, 3)) << 3;
- /** @var int $h4 */
- $h4 = self::load_3(self::substr($s, 13, 3)) << 2;
- /** @var int $h5 */
- $h5 = self::load_4(self::substr($s, 16, 4));
- /** @var int $h6 */
- $h6 = self::load_3(self::substr($s, 20, 3)) << 7;
- /** @var int $h7 */
- $h7 = self::load_3(self::substr($s, 23, 3)) << 5;
- /** @var int $h8 */
- $h8 = self::load_3(self::substr($s, 26, 3)) << 4;
- /** @var int $h9 */
- $h9 = (self::load_3(self::substr($s, 29, 3)) & 8388607) << 2;
-
- /** @var int $carry9 */
- $carry9 = ($h9 + (1 << 24)) >> 25;
- $h0 += self::mul($carry9, 19, 5);
- $h9 -= $carry9 << 25;
- /** @var int $carry1 */
- $carry1 = ($h1 + (1 << 24)) >> 25;
- $h2 += $carry1;
- $h1 -= $carry1 << 25;
- /** @var int $carry3 */
- $carry3 = ($h3 + (1 << 24)) >> 25;
- $h4 += $carry3;
- $h3 -= $carry3 << 25;
- /** @var int $carry5 */
- $carry5 = ($h5 + (1 << 24)) >> 25;
- $h6 += $carry5;
- $h5 -= $carry5 << 25;
- /** @var int $carry7 */
- $carry7 = ($h7 + (1 << 24)) >> 25;
- $h8 += $carry7;
- $h7 -= $carry7 << 25;
-
- /** @var int $carry0 */
- $carry0 = ($h0 + (1 << 25)) >> 26;
- $h1 += $carry0;
- $h0 -= $carry0 << 26;
- /** @var int $carry2 */
- $carry2 = ($h2 + (1 << 25)) >> 26;
- $h3 += $carry2;
- $h2 -= $carry2 << 26;
- /** @var int $carry4 */
- $carry4 = ($h4 + (1 << 25)) >> 26;
- $h5 += $carry4;
- $h4 -= $carry4 << 26;
- /** @var int $carry6 */
- $carry6 = ($h6 + (1 << 25)) >> 26;
- $h7 += $carry6;
- $h6 -= $carry6 << 26;
- /** @var int $carry8 */
- $carry8 = ($h8 + (1 << 25)) >> 26;
- $h9 += $carry8;
- $h8 -= $carry8 << 26;
-
- return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(
- array(
- (int) $h0,
- (int) $h1,
- (int) $h2,
- (int) $h3,
- (int) $h4,
- (int) $h5,
- (int) $h6,
- (int) $h7,
- (int) $h8,
- (int) $h9
- )
- );
- }
-
- /**
- * Convert a field element to a byte string.
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $h
- * @return string
- */
- public static function fe_tobytes(ParagonIE_Sodium_Core_Curve25519_Fe $h)
- {
- /** @var int $h0 */
- $h0 = (int) $h[0];
- /** @var int $h1 */
- $h1 = (int) $h[1];
- /** @var int $h2 */
- $h2 = (int) $h[2];
- /** @var int $h3 */
- $h3 = (int) $h[3];
- /** @var int $h4 */
- $h4 = (int) $h[4];
- /** @var int $h5 */
- $h5 = (int) $h[5];
- /** @var int $h6 */
- $h6 = (int) $h[6];
- /** @var int $h7 */
- $h7 = (int) $h[7];
- /** @var int $h8 */
- $h8 = (int) $h[8];
- /** @var int $h9 */
- $h9 = (int) $h[9];
-
- /** @var int $q */
- $q = (self::mul($h9, 19, 5) + (1 << 24)) >> 25;
- /** @var int $q */
- $q = ($h0 + $q) >> 26;
- /** @var int $q */
- $q = ($h1 + $q) >> 25;
- /** @var int $q */
- $q = ($h2 + $q) >> 26;
- /** @var int $q */
- $q = ($h3 + $q) >> 25;
- /** @var int $q */
- $q = ($h4 + $q) >> 26;
- /** @var int $q */
- $q = ($h5 + $q) >> 25;
- /** @var int $q */
- $q = ($h6 + $q) >> 26;
- /** @var int $q */
- $q = ($h7 + $q) >> 25;
- /** @var int $q */
- $q = ($h8 + $q) >> 26;
- /** @var int $q */
- $q = ($h9 + $q) >> 25;
-
- $h0 += self::mul($q, 19, 5);
-
- /** @var int $carry0 */
- $carry0 = $h0 >> 26;
- $h1 += $carry0;
- $h0 -= $carry0 << 26;
- /** @var int $carry1 */
- $carry1 = $h1 >> 25;
- $h2 += $carry1;
- $h1 -= $carry1 << 25;
- /** @var int $carry2 */
- $carry2 = $h2 >> 26;
- $h3 += $carry2;
- $h2 -= $carry2 << 26;
- /** @var int $carry3 */
- $carry3 = $h3 >> 25;
- $h4 += $carry3;
- $h3 -= $carry3 << 25;
- /** @var int $carry4 */
- $carry4 = $h4 >> 26;
- $h5 += $carry4;
- $h4 -= $carry4 << 26;
- /** @var int $carry5 */
- $carry5 = $h5 >> 25;
- $h6 += $carry5;
- $h5 -= $carry5 << 25;
- /** @var int $carry6 */
- $carry6 = $h6 >> 26;
- $h7 += $carry6;
- $h6 -= $carry6 << 26;
- /** @var int $carry7 */
- $carry7 = $h7 >> 25;
- $h8 += $carry7;
- $h7 -= $carry7 << 25;
- /** @var int $carry8 */
- $carry8 = $h8 >> 26;
- $h9 += $carry8;
- $h8 -= $carry8 << 26;
- /** @var int $carry9 */
- $carry9 = $h9 >> 25;
- $h9 -= $carry9 << 25;
-
- /**
- * @var array<int, int>
- */
- $s = array(
- (int) (($h0 >> 0) & 0xff),
- (int) (($h0 >> 8) & 0xff),
- (int) (($h0 >> 16) & 0xff),
- (int) ((($h0 >> 24) | ($h1 << 2)) & 0xff),
- (int) (($h1 >> 6) & 0xff),
- (int) (($h1 >> 14) & 0xff),
- (int) ((($h1 >> 22) | ($h2 << 3)) & 0xff),
- (int) (($h2 >> 5) & 0xff),
- (int) (($h2 >> 13) & 0xff),
- (int) ((($h2 >> 21) | ($h3 << 5)) & 0xff),
- (int) (($h3 >> 3) & 0xff),
- (int) (($h3 >> 11) & 0xff),
- (int) ((($h3 >> 19) | ($h4 << 6)) & 0xff),
- (int) (($h4 >> 2) & 0xff),
- (int) (($h4 >> 10) & 0xff),
- (int) (($h4 >> 18) & 0xff),
- (int) (($h5 >> 0) & 0xff),
- (int) (($h5 >> 8) & 0xff),
- (int) (($h5 >> 16) & 0xff),
- (int) ((($h5 >> 24) | ($h6 << 1)) & 0xff),
- (int) (($h6 >> 7) & 0xff),
- (int) (($h6 >> 15) & 0xff),
- (int) ((($h6 >> 23) | ($h7 << 3)) & 0xff),
- (int) (($h7 >> 5) & 0xff),
- (int) (($h7 >> 13) & 0xff),
- (int) ((($h7 >> 21) | ($h8 << 4)) & 0xff),
- (int) (($h8 >> 4) & 0xff),
- (int) (($h8 >> 12) & 0xff),
- (int) ((($h8 >> 20) | ($h9 << 6)) & 0xff),
- (int) (($h9 >> 2) & 0xff),
- (int) (($h9 >> 10) & 0xff),
- (int) (($h9 >> 18) & 0xff)
- );
- return self::intArrayToString($s);
- }
-
- /**
- * Is a field element negative? (1 = yes, 0 = no. Used in calculations.)
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $f
- * @return int
- * @throws SodiumException
- * @throws TypeError
- */
- public static function fe_isnegative(ParagonIE_Sodium_Core_Curve25519_Fe $f)
- {
- $str = self::fe_tobytes($f);
- return (int) (self::chrToInt($str[0]) & 1);
- }
-
- /**
- * Returns 0 if this field element results in all NUL bytes.
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $f
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function fe_isnonzero(ParagonIE_Sodium_Core_Curve25519_Fe $f)
- {
- static $zero;
- if ($zero === null) {
- $zero = str_repeat("\x00", 32);
- }
- /** @var string $zero */
- /** @var string $str */
- $str = self::fe_tobytes($f);
- return !self::verify_32($str, (string) $zero);
- }
-
- /**
- * Multiply two field elements
- *
- * h = f * g
- *
- * @internal You should not use this directly from another application
- *
- * @security Is multiplication a source of timing leaks? If so, can we do
- * anything to prevent that from happening?
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $f
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $g
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- */
- public static function fe_mul(
- ParagonIE_Sodium_Core_Curve25519_Fe $f,
- ParagonIE_Sodium_Core_Curve25519_Fe $g
- ) {
- /** @var int $f0 */
- $f0 = $f[0];
- /** @var int $f1 */
- $f1 = $f[1];
- /** @var int $f2 */
- $f2 = $f[2];
- /** @var int $f3 */
- $f3 = $f[3];
- /** @var int $f4 */
- $f4 = $f[4];
- /** @var int $f5 */
- $f5 = $f[5];
- /** @var int $f6 */
- $f6 = $f[6];
- /** @var int $f7 */
- $f7 = $f[7];
- /** @var int $f8 */
- $f8 = $f[8];
- /** @var int $f9 */
- $f9 = $f[9];
- /** @var int $g0 */
- $g0 = $g[0];
- /** @var int $g1 */
- $g1 = $g[1];
- /** @var int $g2 */
- $g2 = $g[2];
- /** @var int $g3 */
- $g3 = $g[3];
- /** @var int $g4 */
- $g4 = $g[4];
- /** @var int $g5 */
- $g5 = $g[5];
- /** @var int $g6 */
- $g6 = $g[6];
- /** @var int $g7 */
- $g7 = $g[7];
- /** @var int $g8 */
- $g8 = $g[8];
- /** @var int $g9 */
- $g9 = $g[9];
- $g1_19 = self::mul($g1, 19, 5);
- $g2_19 = self::mul($g2, 19, 5);
- $g3_19 = self::mul($g3, 19, 5);
- $g4_19 = self::mul($g4, 19, 5);
- $g5_19 = self::mul($g5, 19, 5);
- $g6_19 = self::mul($g6, 19, 5);
- $g7_19 = self::mul($g7, 19, 5);
- $g8_19 = self::mul($g8, 19, 5);
- $g9_19 = self::mul($g9, 19, 5);
- /** @var int $f1_2 */
- $f1_2 = $f1 << 1;
- /** @var int $f3_2 */
- $f3_2 = $f3 << 1;
- /** @var int $f5_2 */
- $f5_2 = $f5 << 1;
- /** @var int $f7_2 */
- $f7_2 = $f7 << 1;
- /** @var int $f9_2 */
- $f9_2 = $f9 << 1;
- $f0g0 = self::mul($f0, $g0, 26);
- $f0g1 = self::mul($f0, $g1, 25);
- $f0g2 = self::mul($f0, $g2, 26);
- $f0g3 = self::mul($f0, $g3, 25);
- $f0g4 = self::mul($f0, $g4, 26);
- $f0g5 = self::mul($f0, $g5, 25);
- $f0g6 = self::mul($f0, $g6, 26);
- $f0g7 = self::mul($f0, $g7, 25);
- $f0g8 = self::mul($f0, $g8, 26);
- $f0g9 = self::mul($f0, $g9, 26);
- $f1g0 = self::mul($f1, $g0, 26);
- $f1g1_2 = self::mul($f1_2, $g1, 25);
- $f1g2 = self::mul($f1, $g2, 26);
- $f1g3_2 = self::mul($f1_2, $g3, 25);
- $f1g4 = self::mul($f1, $g4, 26);
- $f1g5_2 = self::mul($f1_2, $g5, 25);
- $f1g6 = self::mul($f1, $g6, 26);
- $f1g7_2 = self::mul($f1_2, $g7, 25);
- $f1g8 = self::mul($f1, $g8, 26);
- $f1g9_38 = self::mul($g9_19, $f1_2, 26);
- $f2g0 = self::mul($f2, $g0, 26);
- $f2g1 = self::mul($f2, $g1, 25);
- $f2g2 = self::mul($f2, $g2, 26);
- $f2g3 = self::mul($f2, $g3, 25);
- $f2g4 = self::mul($f2, $g4, 26);
- $f2g5 = self::mul($f2, $g5, 25);
- $f2g6 = self::mul($f2, $g6, 26);
- $f2g7 = self::mul($f2, $g7, 25);
- $f2g8_19 = self::mul($g8_19, $f2, 26);
- $f2g9_19 = self::mul($g9_19, $f2, 26);
- $f3g0 = self::mul($f3, $g0, 26);
- $f3g1_2 = self::mul($f3_2, $g1, 25);
- $f3g2 = self::mul($f3, $g2, 26);
- $f3g3_2 = self::mul($f3_2, $g3, 25);
- $f3g4 = self::mul($f3, $g4, 26);
- $f3g5_2 = self::mul($f3_2, $g5, 25);
- $f3g6 = self::mul($f3, $g6, 26);
- $f3g7_38 = self::mul($g7_19, $f3_2, 26);
- $f3g8_19 = self::mul($g8_19, $f3, 25);
- $f3g9_38 = self::mul($g9_19, $f3_2, 26);
- $f4g0 = self::mul($f4, $g0, 26);
- $f4g1 = self::mul($f4, $g1, 25);
- $f4g2 = self::mul($f4, $g2, 26);
- $f4g3 = self::mul($f4, $g3, 25);
- $f4g4 = self::mul($f4, $g4, 26);
- $f4g5 = self::mul($f4, $g5, 25);
- $f4g6_19 = self::mul($g6_19, $f4, 26);
- $f4g7_19 = self::mul($g7_19, $f4, 26);
- $f4g8_19 = self::mul($g8_19, $f4, 26);
- $f4g9_19 = self::mul($g9_19, $f4, 26);
- $f5g0 = self::mul($f5, $g0, 26);
- $f5g1_2 = self::mul($f5_2, $g1, 25);
- $f5g2 = self::mul($f5, $g2, 26);
- $f5g3_2 = self::mul($f5_2, $g3, 25);
- $f5g4 = self::mul($f5, $g4, 26);
- $f5g5_38 = self::mul($g5_19, $f5_2, 26);
- $f5g6_19 = self::mul($g6_19, $f5, 25);
- $f5g7_38 = self::mul($g7_19, $f5_2, 26);
- $f5g8_19 = self::mul($g8_19, $f5, 25);
- $f5g9_38 = self::mul($g9_19, $f5_2, 26);
- $f6g0 = self::mul($f6, $g0, 26);
- $f6g1 = self::mul($f6, $g1, 25);
- $f6g2 = self::mul($f6, $g2, 26);
- $f6g3 = self::mul($f6, $g3, 25);
- $f6g4_19 = self::mul($g4_19, $f6, 26);
- $f6g5_19 = self::mul($g5_19, $f6, 26);
- $f6g6_19 = self::mul($g6_19, $f6, 26);
- $f6g7_19 = self::mul($g7_19, $f6, 26);
- $f6g8_19 = self::mul($g8_19, $f6, 26);
- $f6g9_19 = self::mul($g9_19, $f6, 26);
- $f7g0 = self::mul($f7, $g0, 26);
- $f7g1_2 = self::mul($f7_2, $g1, 25);
- $f7g2 = self::mul($f7, $g2, 26);
- $f7g3_38 = self::mul($g3_19, $f7_2, 26);
- $f7g4_19 = self::mul($g4_19, $f7, 26);
- $f7g5_38 = self::mul($g5_19, $f7_2, 26);
- $f7g6_19 = self::mul($g6_19, $f7, 25);
- $f7g7_38 = self::mul($g7_19, $f7_2, 26);
- $f7g8_19 = self::mul($g8_19, $f7, 25);
- $f7g9_38 = self::mul($g9_19,$f7_2, 26);
- $f8g0 = self::mul($f8, $g0, 26);
- $f8g1 = self::mul($f8, $g1, 25);
- $f8g2_19 = self::mul($g2_19, $f8, 26);
- $f8g3_19 = self::mul($g3_19, $f8, 26);
- $f8g4_19 = self::mul($g4_19, $f8, 26);
- $f8g5_19 = self::mul($g5_19, $f8, 26);
- $f8g6_19 = self::mul($g6_19, $f8, 26);
- $f8g7_19 = self::mul($g7_19, $f8, 26);
- $f8g8_19 = self::mul($g8_19, $f8, 26);
- $f8g9_19 = self::mul($g9_19, $f8, 26);
- $f9g0 = self::mul($f9, $g0, 26);
- $f9g1_38 = self::mul($g1_19, $f9_2, 26);
- $f9g2_19 = self::mul($g2_19, $f9, 25);
- $f9g3_38 = self::mul($g3_19, $f9_2, 26);
- $f9g4_19 = self::mul($g4_19, $f9, 25);
- $f9g5_38 = self::mul($g5_19, $f9_2, 26);
- $f9g6_19 = self::mul($g6_19, $f9, 25);
- $f9g7_38 = self::mul($g7_19, $f9_2, 26);
- $f9g8_19 = self::mul($g8_19, $f9, 25);
- $f9g9_38 = self::mul($g9_19, $f9_2, 26);
- $h0 = $f0g0 + $f1g9_38 + $f2g8_19 + $f3g7_38 + $f4g6_19 + $f5g5_38 + $f6g4_19 + $f7g3_38 + $f8g2_19 + $f9g1_38;
- $h1 = $f0g1 + $f1g0 + $f2g9_19 + $f3g8_19 + $f4g7_19 + $f5g6_19 + $f6g5_19 + $f7g4_19 + $f8g3_19 + $f9g2_19;
- $h2 = $f0g2 + $f1g1_2 + $f2g0 + $f3g9_38 + $f4g8_19 + $f5g7_38 + $f6g6_19 + $f7g5_38 + $f8g4_19 + $f9g3_38;
- $h3 = $f0g3 + $f1g2 + $f2g1 + $f3g0 + $f4g9_19 + $f5g8_19 + $f6g7_19 + $f7g6_19 + $f8g5_19 + $f9g4_19;
- $h4 = $f0g4 + $f1g3_2 + $f2g2 + $f3g1_2 + $f4g0 + $f5g9_38 + $f6g8_19 + $f7g7_38 + $f8g6_19 + $f9g5_38;
- $h5 = $f0g5 + $f1g4 + $f2g3 + $f3g2 + $f4g1 + $f5g0 + $f6g9_19 + $f7g8_19 + $f8g7_19 + $f9g6_19;
- $h6 = $f0g6 + $f1g5_2 + $f2g4 + $f3g3_2 + $f4g2 + $f5g1_2 + $f6g0 + $f7g9_38 + $f8g8_19 + $f9g7_38;
- $h7 = $f0g7 + $f1g6 + $f2g5 + $f3g4 + $f4g3 + $f5g2 + $f6g1 + $f7g0 + $f8g9_19 + $f9g8_19;
- $h8 = $f0g8 + $f1g7_2 + $f2g6 + $f3g5_2 + $f4g4 + $f5g3_2 + $f6g2 + $f7g1_2 + $f8g0 + $f9g9_38;
- $h9 = $f0g9 + $f1g8 + $f2g7 + $f3g6 + $f4g5 + $f5g4 + $f6g3 + $f7g2 + $f8g1 + $f9g0 ;
-
- /** @var int $carry0 */
- $carry0 = ($h0 + (1 << 25)) >> 26;
- $h1 += $carry0;
- $h0 -= $carry0 << 26;
- /** @var int $carry4 */
- $carry4 = ($h4 + (1 << 25)) >> 26;
- $h5 += $carry4;
- $h4 -= $carry4 << 26;
-
- /** @var int $carry1 */
- $carry1 = ($h1 + (1 << 24)) >> 25;
- $h2 += $carry1;
- $h1 -= $carry1 << 25;
- /** @var int $carry5 */
- $carry5 = ($h5 + (1 << 24)) >> 25;
- $h6 += $carry5;
- $h5 -= $carry5 << 25;
-
- /** @var int $carry2 */
- $carry2 = ($h2 + (1 << 25)) >> 26;
- $h3 += $carry2;
- $h2 -= $carry2 << 26;
- /** @var int $carry6 */
- $carry6 = ($h6 + (1 << 25)) >> 26;
- $h7 += $carry6;
- $h6 -= $carry6 << 26;
-
- /** @var int $carry3 */
- $carry3 = ($h3 + (1 << 24)) >> 25;
- $h4 += $carry3;
- $h3 -= $carry3 << 25;
- /** @var int $carry7 */
- $carry7 = ($h7 + (1 << 24)) >> 25;
- $h8 += $carry7;
- $h7 -= $carry7 << 25;
-
- /** @var int $carry4 */
- $carry4 = ($h4 + (1 << 25)) >> 26;
- $h5 += $carry4;
- $h4 -= $carry4 << 26;
- /** @var int $carry8 */
- $carry8 = ($h8 + (1 << 25)) >> 26;
- $h9 += $carry8;
- $h8 -= $carry8 << 26;
-
- /** @var int $carry9 */
- $carry9 = ($h9 + (1 << 24)) >> 25;
- $h0 += self::mul($carry9, 19, 5);
- $h9 -= $carry9 << 25;
-
- /** @var int $carry0 */
- $carry0 = ($h0 + (1 << 25)) >> 26;
- $h1 += $carry0;
- $h0 -= $carry0 << 26;
-
- return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(
- array(
- (int) $h0,
- (int) $h1,
- (int) $h2,
- (int) $h3,
- (int) $h4,
- (int) $h5,
- (int) $h6,
- (int) $h7,
- (int) $h8,
- (int) $h9
- )
- );
- }
-
- /**
- * Get the negative values for each piece of the field element.
- *
- * h = -f
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $f
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- * @psalm-suppress MixedAssignment
- */
- public static function fe_neg(ParagonIE_Sodium_Core_Curve25519_Fe $f)
- {
- $h = new ParagonIE_Sodium_Core_Curve25519_Fe();
- for ($i = 0; $i < 10; ++$i) {
- $h[$i] = -$f[$i];
- }
- return $h;
- }
-
- /**
- * Square a field element
- *
- * h = f * f
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $f
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- */
- public static function fe_sq(ParagonIE_Sodium_Core_Curve25519_Fe $f)
- {
- $f0 = (int) $f[0];
- $f1 = (int) $f[1];
- $f2 = (int) $f[2];
- $f3 = (int) $f[3];
- $f4 = (int) $f[4];
- $f5 = (int) $f[5];
- $f6 = (int) $f[6];
- $f7 = (int) $f[7];
- $f8 = (int) $f[8];
- $f9 = (int) $f[9];
-
- /** @var int $f0_2 */
- $f0_2 = $f0 << 1;
- /** @var int $f1_2 */
- $f1_2 = $f1 << 1;
- /** @var int $f2_2 */
- $f2_2 = $f2 << 1;
- /** @var int $f3_2 */
- $f3_2 = $f3 << 1;
- /** @var int $f4_2 */
- $f4_2 = $f4 << 1;
- /** @var int $f5_2 */
- $f5_2 = $f5 << 1;
- /** @var int $f6_2 */
- $f6_2 = $f6 << 1;
- /** @var int $f7_2 */
- $f7_2 = $f7 << 1;
- $f5_38 = self::mul($f5, 38, 6);
- $f6_19 = self::mul($f6, 19, 5);
- $f7_38 = self::mul($f7, 38, 6);
- $f8_19 = self::mul($f8, 19, 5);
- $f9_38 = self::mul($f9, 38, 6);
- $f0f0 = self::mul($f0, $f0, 25);
- $f0f1_2 = self::mul($f0_2, $f1, 24);
- $f0f2_2 = self::mul($f0_2, $f2, 26);
- $f0f3_2 = self::mul($f0_2, $f3, 24);
- $f0f4_2 = self::mul($f0_2, $f4, 25);
- $f0f5_2 = self::mul($f0_2, $f5, 25);
- $f0f6_2 = self::mul($f0_2, $f6, 25);
- $f0f7_2 = self::mul($f0_2, $f7, 24);
- $f0f8_2 = self::mul($f0_2, $f8, 25);
- $f0f9_2 = self::mul($f0_2, $f9, 25);
- $f1f1_2 = self::mul($f1_2, $f1, 24);
- $f1f2_2 = self::mul($f1_2, $f2, 26);
- $f1f3_4 = self::mul($f1_2, $f3_2, 25);
- $f1f4_2 = self::mul($f1_2, $f4, 25);
- $f1f5_4 = self::mul($f1_2, $f5_2, 26);
- $f1f6_2 = self::mul($f1_2, $f6, 25);
- $f1f7_4 = self::mul($f1_2, $f7_2, 25);
- $f1f8_2 = self::mul($f1_2, $f8, 25);
- $f1f9_76 = self::mul($f9_38, $f1_2, 25);
- $f2f2 = self::mul($f2, $f2, 26);
- $f2f3_2 = self::mul($f2_2, $f3, 24);
- $f2f4_2 = self::mul($f2_2, $f4, 25);
- $f2f5_2 = self::mul($f2_2, $f5, 25);
- $f2f6_2 = self::mul($f2_2, $f6, 25);
- $f2f7_2 = self::mul($f2_2, $f7, 25);
- $f2f8_38 = self::mul($f8_19, $f2_2, 27);
- $f2f9_38 = self::mul($f9_38, $f2, 26);
- $f3f3_2 = self::mul($f3_2, $f3, 25);
- $f3f4_2 = self::mul($f3_2, $f4, 25);
- $f3f5_4 = self::mul($f3_2, $f5_2, 26);
- $f3f6_2 = self::mul($f3_2, $f6, 25);
- $f3f7_76 = self::mul($f7_38, $f3_2, 25);
- $f3f8_38 = self::mul($f8_19, $f3_2, 25);
- $f3f9_76 = self::mul($f9_38, $f3_2, 25);
- $f4f4 = self::mul($f4, $f4, 25);
- $f4f5_2 = self::mul($f4_2, $f5, 25);
- $f4f6_38 = self::mul($f6_19, $f4_2, 26);
- $f4f7_38 = self::mul($f7_38, $f4, 25);
- $f4f8_38 = self::mul($f8_19, $f4_2, 26);
- $f4f9_38 = self::mul($f9_38, $f4, 25);
- $f5f5_38 = self::mul($f5_38, $f5, 25);
- $f5f6_38 = self::mul($f6_19, $f5_2, 26);
- $f5f7_76 = self::mul($f7_38, $f5_2, 26);
- $f5f8_38 = self::mul($f8_19, $f5_2, 26);
- $f5f9_76 = self::mul($f9_38, $f5_2, 26);
- $f6f6_19 = self::mul($f6_19, $f6, 25);
- $f6f7_38 = self::mul($f7_38, $f6, 25);
- $f6f8_38 = self::mul($f8_19, $f6_2, 26);
- $f6f9_38 = self::mul($f9_38, $f6, 25);
- $f7f7_38 = self::mul($f7_38, $f7, 24);
- $f7f8_38 = self::mul($f8_19, $f7_2, 25);
- $f7f9_76 = self::mul($f9_38, $f7_2, 25);
- $f8f8_19 = self::mul($f8_19, $f8, 25);
- $f8f9_38 = self::mul($f9_38, $f8, 25);
- $f9f9_38 = self::mul($f9_38, $f9, 25);
- $h0 = $f0f0 + $f1f9_76 + $f2f8_38 + $f3f7_76 + $f4f6_38 + $f5f5_38;
- $h1 = $f0f1_2 + $f2f9_38 + $f3f8_38 + $f4f7_38 + $f5f6_38;
- $h2 = $f0f2_2 + $f1f1_2 + $f3f9_76 + $f4f8_38 + $f5f7_76 + $f6f6_19;
- $h3 = $f0f3_2 + $f1f2_2 + $f4f9_38 + $f5f8_38 + $f6f7_38;
- $h4 = $f0f4_2 + $f1f3_4 + $f2f2 + $f5f9_76 + $f6f8_38 + $f7f7_38;
- $h5 = $f0f5_2 + $f1f4_2 + $f2f3_2 + $f6f9_38 + $f7f8_38;
- $h6 = $f0f6_2 + $f1f5_4 + $f2f4_2 + $f3f3_2 + $f7f9_76 + $f8f8_19;
- $h7 = $f0f7_2 + $f1f6_2 + $f2f5_2 + $f3f4_2 + $f8f9_38;
- $h8 = $f0f8_2 + $f1f7_4 + $f2f6_2 + $f3f5_4 + $f4f4 + $f9f9_38;
- $h9 = $f0f9_2 + $f1f8_2 + $f2f7_2 + $f3f6_2 + $f4f5_2;
-
- /** @var int $carry0 */
- $carry0 = ($h0 + (1 << 25)) >> 26;
- $h1 += $carry0;
- $h0 -= $carry0 << 26;
- /** @var int $carry4 */
- $carry4 = ($h4 + (1 << 25)) >> 26;
- $h5 += $carry4;
- $h4 -= $carry4 << 26;
-
- /** @var int $carry1 */
- $carry1 = ($h1 + (1 << 24)) >> 25;
- $h2 += $carry1;
- $h1 -= $carry1 << 25;
- /** @var int $carry5 */
- $carry5 = ($h5 + (1 << 24)) >> 25;
- $h6 += $carry5;
- $h5 -= $carry5 << 25;
-
- /** @var int $carry2 */
- $carry2 = ($h2 + (1 << 25)) >> 26;
- $h3 += $carry2;
- $h2 -= $carry2 << 26;
- /** @var int $carry6 */
- $carry6 = ($h6 + (1 << 25)) >> 26;
- $h7 += $carry6;
- $h6 -= $carry6 << 26;
-
- /** @var int $carry3 */
- $carry3 = ($h3 + (1 << 24)) >> 25;
- $h4 += $carry3;
- $h3 -= $carry3 << 25;
- /** @var int $carry7 */
- $carry7 = ($h7 + (1 << 24)) >> 25;
- $h8 += $carry7;
- $h7 -= $carry7 << 25;
-
- /** @var int $carry4 */
- $carry4 = ($h4 + (1 << 25)) >> 26;
- $h5 += $carry4;
- $h4 -= $carry4 << 26;
- /** @var int $carry8 */
- $carry8 = ($h8 + (1 << 25)) >> 26;
- $h9 += $carry8;
- $h8 -= $carry8 << 26;
-
- /** @var int $carry9 */
- $carry9 = ($h9 + (1 << 24)) >> 25;
- $h0 += self::mul($carry9, 19, 5);
- $h9 -= $carry9 << 25;
-
- /** @var int $carry0 */
- $carry0 = ($h0 + (1 << 25)) >> 26;
- $h1 += $carry0;
- $h0 -= $carry0 << 26;
-
- return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(
- array(
- (int) $h0,
- (int) $h1,
- (int) $h2,
- (int) $h3,
- (int) $h4,
- (int) $h5,
- (int) $h6,
- (int) $h7,
- (int) $h8,
- (int) $h9
- )
- );
- }
-
-
- /**
- * Square and double a field element
- *
- * h = 2 * f * f
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $f
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- */
- public static function fe_sq2(ParagonIE_Sodium_Core_Curve25519_Fe $f)
- {
- $f0 = (int) $f[0];
- $f1 = (int) $f[1];
- $f2 = (int) $f[2];
- $f3 = (int) $f[3];
- $f4 = (int) $f[4];
- $f5 = (int) $f[5];
- $f6 = (int) $f[6];
- $f7 = (int) $f[7];
- $f8 = (int) $f[8];
- $f9 = (int) $f[9];
-
- /** @var int $f0_2 */
- $f0_2 = $f0 << 1;
- /** @var int $f1_2 */
- $f1_2 = $f1 << 1;
- /** @var int $f2_2 */
- $f2_2 = $f2 << 1;
- /** @var int $f3_2 */
- $f3_2 = $f3 << 1;
- /** @var int $f4_2 */
- $f4_2 = $f4 << 1;
- /** @var int $f5_2 */
- $f5_2 = $f5 << 1;
- /** @var int $f6_2 */
- $f6_2 = $f6 << 1;
- /** @var int $f7_2 */
- $f7_2 = $f7 << 1;
- $f5_38 = self::mul($f5, 38, 6); /* 1.959375*2^30 */
- $f6_19 = self::mul($f6, 19, 5); /* 1.959375*2^30 */
- $f7_38 = self::mul($f7, 38, 6); /* 1.959375*2^30 */
- $f8_19 = self::mul($f8, 19, 5); /* 1.959375*2^30 */
- $f9_38 = self::mul($f9, 38, 6); /* 1.959375*2^30 */
- $f0f0 = self::mul($f0, $f0, 24);
- $f0f1_2 = self::mul($f0_2, $f1, 24);
- $f0f2_2 = self::mul($f0_2, $f2, 24);
- $f0f3_2 = self::mul($f0_2, $f3, 24);
- $f0f4_2 = self::mul($f0_2, $f4, 24);
- $f0f5_2 = self::mul($f0_2, $f5, 24);
- $f0f6_2 = self::mul($f0_2, $f6, 24);
- $f0f7_2 = self::mul($f0_2, $f7, 24);
- $f0f8_2 = self::mul($f0_2, $f8, 24);
- $f0f9_2 = self::mul($f0_2, $f9, 24);
- $f1f1_2 = self::mul($f1_2, $f1, 24);
- $f1f2_2 = self::mul($f1_2, $f2, 24);
- $f1f3_4 = self::mul($f1_2, $f3_2, 24);
- $f1f4_2 = self::mul($f1_2, $f4, 24);
- $f1f5_4 = self::mul($f1_2, $f5_2, 24);
- $f1f6_2 = self::mul($f1_2, $f6, 24);
- $f1f7_4 = self::mul($f1_2, $f7_2, 24);
- $f1f8_2 = self::mul($f1_2, $f8, 24);
- $f1f9_76 = self::mul($f9_38, $f1_2, 24);
- $f2f2 = self::mul($f2, $f2, 24);
- $f2f3_2 = self::mul($f2_2, $f3, 24);
- $f2f4_2 = self::mul($f2_2, $f4, 24);
- $f2f5_2 = self::mul($f2_2, $f5, 24);
- $f2f6_2 = self::mul($f2_2, $f6, 24);
- $f2f7_2 = self::mul($f2_2, $f7, 24);
- $f2f8_38 = self::mul($f8_19, $f2_2, 25);
- $f2f9_38 = self::mul($f9_38, $f2, 24);
- $f3f3_2 = self::mul($f3_2, $f3, 24);
- $f3f4_2 = self::mul($f3_2, $f4, 24);
- $f3f5_4 = self::mul($f3_2, $f5_2, 24);
- $f3f6_2 = self::mul($f3_2, $f6, 24);
- $f3f7_76 = self::mul($f7_38, $f3_2, 24);
- $f3f8_38 = self::mul($f8_19, $f3_2, 24);
- $f3f9_76 = self::mul($f9_38, $f3_2, 24);
- $f4f4 = self::mul($f4, $f4, 24);
- $f4f5_2 = self::mul($f4_2, $f5, 24);
- $f4f6_38 = self::mul($f6_19, $f4_2, 25);
- $f4f7_38 = self::mul($f7_38, $f4, 24);
- $f4f8_38 = self::mul($f8_19, $f4_2, 25);
- $f4f9_38 = self::mul($f9_38, $f4, 24);
- $f5f5_38 = self::mul($f5_38, $f5, 24);
- $f5f6_38 = self::mul($f6_19, $f5_2, 24);
- $f5f7_76 = self::mul($f7_38, $f5_2, 24);
- $f5f8_38 = self::mul($f8_19, $f5_2, 24);
- $f5f9_76 = self::mul($f9_38, $f5_2, 24);
- $f6f6_19 = self::mul($f6_19, $f6, 24);
- $f6f7_38 = self::mul($f7_38, $f6, 24);
- $f6f8_38 = self::mul($f8_19, $f6_2, 25);
- $f6f9_38 = self::mul($f9_38, $f6, 24);
- $f7f7_38 = self::mul($f7_38, $f7, 24);
- $f7f8_38 = self::mul($f8_19, $f7_2, 24);
- $f7f9_76 = self::mul($f9_38, $f7_2, 24);
- $f8f8_19 = self::mul($f8_19, $f8, 24);
- $f8f9_38 = self::mul($f9_38, $f8, 24);
- $f9f9_38 = self::mul($f9_38, $f9, 24);
-
- /** @var int $h0 */
- $h0 = (int) ($f0f0 + $f1f9_76 + $f2f8_38 + $f3f7_76 + $f4f6_38 + $f5f5_38) << 1;
- /** @var int $h1 */
- $h1 = (int) ($f0f1_2 + $f2f9_38 + $f3f8_38 + $f4f7_38 + $f5f6_38) << 1;
- /** @var int $h2 */
- $h2 = (int) ($f0f2_2 + $f1f1_2 + $f3f9_76 + $f4f8_38 + $f5f7_76 + $f6f6_19) << 1;
- /** @var int $h3 */
- $h3 = (int) ($f0f3_2 + $f1f2_2 + $f4f9_38 + $f5f8_38 + $f6f7_38) << 1;
- /** @var int $h4 */
- $h4 = (int) ($f0f4_2 + $f1f3_4 + $f2f2 + $f5f9_76 + $f6f8_38 + $f7f7_38) << 1;
- /** @var int $h5 */
- $h5 = (int) ($f0f5_2 + $f1f4_2 + $f2f3_2 + $f6f9_38 + $f7f8_38) << 1;
- /** @var int $h6 */
- $h6 = (int) ($f0f6_2 + $f1f5_4 + $f2f4_2 + $f3f3_2 + $f7f9_76 + $f8f8_19) << 1;
- /** @var int $h7 */
- $h7 = (int) ($f0f7_2 + $f1f6_2 + $f2f5_2 + $f3f4_2 + $f8f9_38) << 1;
- /** @var int $h8 */
- $h8 = (int) ($f0f8_2 + $f1f7_4 + $f2f6_2 + $f3f5_4 + $f4f4 + $f9f9_38) << 1;
- /** @var int $h9 */
- $h9 = (int) ($f0f9_2 + $f1f8_2 + $f2f7_2 + $f3f6_2 + $f4f5_2) << 1;
-
- /** @var int $carry0 */
- $carry0 = ($h0 + (1 << 25)) >> 26;
- $h1 += $carry0;
- $h0 -= $carry0 << 26;
- /** @var int $carry4 */
- $carry4 = ($h4 + (1 << 25)) >> 26;
- $h5 += $carry4;
- $h4 -= $carry4 << 26;
-
- /** @var int $carry1 */
- $carry1 = ($h1 + (1 << 24)) >> 25;
- $h2 += $carry1;
- $h1 -= $carry1 << 25;
- /** @var int $carry5 */
- $carry5 = ($h5 + (1 << 24)) >> 25;
- $h6 += $carry5;
- $h5 -= $carry5 << 25;
-
- /** @var int $carry2 */
- $carry2 = ($h2 + (1 << 25)) >> 26;
- $h3 += $carry2;
- $h2 -= $carry2 << 26;
- /** @var int $carry6 */
- $carry6 = ($h6 + (1 << 25)) >> 26;
- $h7 += $carry6;
- $h6 -= $carry6 << 26;
-
- /** @var int $carry3 */
- $carry3 = ($h3 + (1 << 24)) >> 25;
- $h4 += $carry3;
- $h3 -= $carry3 << 25;
- /** @var int $carry7 */
- $carry7 = ($h7 + (1 << 24)) >> 25;
- $h8 += $carry7;
- $h7 -= $carry7 << 25;
-
- /** @var int $carry4 */
- $carry4 = ($h4 + (1 << 25)) >> 26;
- $h5 += $carry4;
- $h4 -= $carry4 << 26;
- /** @var int $carry8 */
- $carry8 = ($h8 + (1 << 25)) >> 26;
- $h9 += $carry8;
- $h8 -= $carry8 << 26;
-
- /** @var int $carry9 */
- $carry9 = ($h9 + (1 << 24)) >> 25;
- $h0 += self::mul($carry9, 19, 5);
- $h9 -= $carry9 << 25;
-
- /** @var int $carry0 */
- $carry0 = ($h0 + (1 << 25)) >> 26;
- $h1 += $carry0;
- $h0 -= $carry0 << 26;
-
- return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(
- array(
- (int) $h0,
- (int) $h1,
- (int) $h2,
- (int) $h3,
- (int) $h4,
- (int) $h5,
- (int) $h6,
- (int) $h7,
- (int) $h8,
- (int) $h9
- )
- );
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $Z
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- */
- public static function fe_invert(ParagonIE_Sodium_Core_Curve25519_Fe $Z)
- {
- $z = clone $Z;
- $t0 = self::fe_sq($z);
- $t1 = self::fe_sq($t0);
- $t1 = self::fe_sq($t1);
- $t1 = self::fe_mul($z, $t1);
- $t0 = self::fe_mul($t0, $t1);
- $t2 = self::fe_sq($t0);
- $t1 = self::fe_mul($t1, $t2);
- $t2 = self::fe_sq($t1);
- for ($i = 1; $i < 5; ++$i) {
- $t2 = self::fe_sq($t2);
- }
- $t1 = self::fe_mul($t2, $t1);
- $t2 = self::fe_sq($t1);
- for ($i = 1; $i < 10; ++$i) {
- $t2 = self::fe_sq($t2);
- }
- $t2 = self::fe_mul($t2, $t1);
- $t3 = self::fe_sq($t2);
- for ($i = 1; $i < 20; ++$i) {
- $t3 = self::fe_sq($t3);
- }
- $t2 = self::fe_mul($t3, $t2);
- $t2 = self::fe_sq($t2);
- for ($i = 1; $i < 10; ++$i) {
- $t2 = self::fe_sq($t2);
- }
- $t1 = self::fe_mul($t2, $t1);
- $t2 = self::fe_sq($t1);
- for ($i = 1; $i < 50; ++$i) {
- $t2 = self::fe_sq($t2);
- }
- $t2 = self::fe_mul($t2, $t1);
- $t3 = self::fe_sq($t2);
- for ($i = 1; $i < 100; ++$i) {
- $t3 = self::fe_sq($t3);
- }
- $t2 = self::fe_mul($t3, $t2);
- $t2 = self::fe_sq($t2);
- for ($i = 1; $i < 50; ++$i) {
- $t2 = self::fe_sq($t2);
- }
- $t1 = self::fe_mul($t2, $t1);
- $t1 = self::fe_sq($t1);
- for ($i = 1; $i < 5; ++$i) {
- $t1 = self::fe_sq($t1);
- }
- return self::fe_mul($t1, $t0);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @ref https://github.com/jedisct1/libsodium/blob/68564326e1e9dc57ef03746f85734232d20ca6fb/src/libsodium/crypto_core/curve25519/ref10/curve25519_ref10.c#L1054-L1106
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $z
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- */
- public static function fe_pow22523(ParagonIE_Sodium_Core_Curve25519_Fe $z)
- {
- # fe_sq(t0, z);
- # fe_sq(t1, t0);
- # fe_sq(t1, t1);
- # fe_mul(t1, z, t1);
- # fe_mul(t0, t0, t1);
- # fe_sq(t0, t0);
- # fe_mul(t0, t1, t0);
- # fe_sq(t1, t0);
- $t0 = self::fe_sq($z);
- $t1 = self::fe_sq($t0);
- $t1 = self::fe_sq($t1);
- $t1 = self::fe_mul($z, $t1);
- $t0 = self::fe_mul($t0, $t1);
- $t0 = self::fe_sq($t0);
- $t0 = self::fe_mul($t1, $t0);
- $t1 = self::fe_sq($t0);
-
- # for (i = 1; i < 5; ++i) {
- # fe_sq(t1, t1);
- # }
- for ($i = 1; $i < 5; ++$i) {
- $t1 = self::fe_sq($t1);
- }
-
- # fe_mul(t0, t1, t0);
- # fe_sq(t1, t0);
- $t0 = self::fe_mul($t1, $t0);
- $t1 = self::fe_sq($t0);
-
- # for (i = 1; i < 10; ++i) {
- # fe_sq(t1, t1);
- # }
- for ($i = 1; $i < 10; ++$i) {
- $t1 = self::fe_sq($t1);
- }
-
- # fe_mul(t1, t1, t0);
- # fe_sq(t2, t1);
- $t1 = self::fe_mul($t1, $t0);
- $t2 = self::fe_sq($t1);
-
- # for (i = 1; i < 20; ++i) {
- # fe_sq(t2, t2);
- # }
- for ($i = 1; $i < 20; ++$i) {
- $t2 = self::fe_sq($t2);
- }
-
- # fe_mul(t1, t2, t1);
- # fe_sq(t1, t1);
- $t1 = self::fe_mul($t2, $t1);
- $t1 = self::fe_sq($t1);
-
- # for (i = 1; i < 10; ++i) {
- # fe_sq(t1, t1);
- # }
- for ($i = 1; $i < 10; ++$i) {
- $t1 = self::fe_sq($t1);
- }
-
- # fe_mul(t0, t1, t0);
- # fe_sq(t1, t0);
- $t0 = self::fe_mul($t1, $t0);
- $t1 = self::fe_sq($t0);
-
- # for (i = 1; i < 50; ++i) {
- # fe_sq(t1, t1);
- # }
- for ($i = 1; $i < 50; ++$i) {
- $t1 = self::fe_sq($t1);
- }
-
- # fe_mul(t1, t1, t0);
- # fe_sq(t2, t1);
- $t1 = self::fe_mul($t1, $t0);
- $t2 = self::fe_sq($t1);
-
- # for (i = 1; i < 100; ++i) {
- # fe_sq(t2, t2);
- # }
- for ($i = 1; $i < 100; ++$i) {
- $t2 = self::fe_sq($t2);
- }
-
- # fe_mul(t1, t2, t1);
- # fe_sq(t1, t1);
- $t1 = self::fe_mul($t2, $t1);
- $t1 = self::fe_sq($t1);
-
- # for (i = 1; i < 50; ++i) {
- # fe_sq(t1, t1);
- # }
- for ($i = 1; $i < 50; ++$i) {
- $t1 = self::fe_sq($t1);
- }
-
- # fe_mul(t0, t1, t0);
- # fe_sq(t0, t0);
- # fe_sq(t0, t0);
- # fe_mul(out, t0, z);
- $t0 = self::fe_mul($t1, $t0);
- $t0 = self::fe_sq($t0);
- $t0 = self::fe_sq($t0);
- return self::fe_mul($t0, $z);
- }
-
- /**
- * Subtract two field elements.
- *
- * h = f - g
- *
- * Preconditions:
- * |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
- * |g| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
- *
- * Postconditions:
- * |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $f
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $g
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- * @psalm-suppress MixedOperand
- */
- public static function fe_sub(ParagonIE_Sodium_Core_Curve25519_Fe $f, ParagonIE_Sodium_Core_Curve25519_Fe $g)
- {
- return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(
- array(
- (int) ($f[0] - $g[0]),
- (int) ($f[1] - $g[1]),
- (int) ($f[2] - $g[2]),
- (int) ($f[3] - $g[3]),
- (int) ($f[4] - $g[4]),
- (int) ($f[5] - $g[5]),
- (int) ($f[6] - $g[6]),
- (int) ($f[7] - $g[7]),
- (int) ($f[8] - $g[8]),
- (int) ($f[9] - $g[9])
- )
- );
- }
-
- /**
- * Add two group elements.
- *
- * r = p + q
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_Cached $q
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P1p1
- */
- public static function ge_add(
- ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p,
- ParagonIE_Sodium_Core_Curve25519_Ge_Cached $q
- ) {
- $r = new ParagonIE_Sodium_Core_Curve25519_Ge_P1p1();
- $r->X = self::fe_add($p->Y, $p->X);
- $r->Y = self::fe_sub($p->Y, $p->X);
- $r->Z = self::fe_mul($r->X, $q->YplusX);
- $r->Y = self::fe_mul($r->Y, $q->YminusX);
- $r->T = self::fe_mul($q->T2d, $p->T);
- $r->X = self::fe_mul($p->Z, $q->Z);
- $t0 = self::fe_add($r->X, $r->X);
- $r->X = self::fe_sub($r->Z, $r->Y);
- $r->Y = self::fe_add($r->Z, $r->Y);
- $r->Z = self::fe_add($t0, $r->T);
- $r->T = self::fe_sub($t0, $r->T);
- return $r;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @ref https://github.com/jedisct1/libsodium/blob/157c4a80c13b117608aeae12178b2d38825f9f8f/src/libsodium/crypto_core/curve25519/ref10/curve25519_ref10.c#L1185-L1215
- * @param string $a
- * @return array<int, mixed>
- * @throws SodiumException
- * @throws TypeError
- */
- public static function slide($a)
- {
- if (self::strlen($a) < 256) {
- if (self::strlen($a) < 16) {
- $a = str_pad($a, 256, '0', STR_PAD_RIGHT);
- }
- }
- /** @var array<int, int> $r */
- $r = array();
-
- /** @var int $i */
- for ($i = 0; $i < 256; ++$i) {
- $r[$i] = (int) (
- 1 & (
- self::chrToInt($a[(int) ($i >> 3)])
- >>
- ($i & 7)
- )
- );
- }
-
- for ($i = 0;$i < 256;++$i) {
- if ($r[$i]) {
- for ($b = 1;$b <= 6 && $i + $b < 256;++$b) {
- if ($r[$i + $b]) {
- if ($r[$i] + ($r[$i + $b] << $b) <= 15) {
- $r[$i] += $r[$i + $b] << $b;
- $r[$i + $b] = 0;
- } elseif ($r[$i] - ($r[$i + $b] << $b) >= -15) {
- $r[$i] -= $r[$i + $b] << $b;
- for ($k = $i + $b; $k < 256; ++$k) {
- if (!$r[$k]) {
- $r[$k] = 1;
- break;
- }
- $r[$k] = 0;
- }
- } else {
- break;
- }
- }
- }
- }
- }
- return $r;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $s
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P3
- * @throws SodiumException
- * @throws TypeError
- */
- public static function ge_frombytes_negate_vartime($s)
- {
- static $d = null;
- if (!$d) {
- $d = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$d);
- }
-
- # fe_frombytes(h->Y,s);
- # fe_1(h->Z);
- $h = new ParagonIE_Sodium_Core_Curve25519_Ge_P3(
- self::fe_0(),
- self::fe_frombytes($s),
- self::fe_1()
- );
-
- # fe_sq(u,h->Y);
- # fe_mul(v,u,d);
- # fe_sub(u,u,h->Z); /* u = y^2-1 */
- # fe_add(v,v,h->Z); /* v = dy^2+1 */
- $u = self::fe_sq($h->Y);
- /** @var ParagonIE_Sodium_Core_Curve25519_Fe $d */
- $v = self::fe_mul($u, $d);
- $u = self::fe_sub($u, $h->Z); /* u = y^2 - 1 */
- $v = self::fe_add($v, $h->Z); /* v = dy^2 + 1 */
-
- # fe_sq(v3,v);
- # fe_mul(v3,v3,v); /* v3 = v^3 */
- # fe_sq(h->X,v3);
- # fe_mul(h->X,h->X,v);
- # fe_mul(h->X,h->X,u); /* x = uv^7 */
- $v3 = self::fe_sq($v);
- $v3 = self::fe_mul($v3, $v); /* v3 = v^3 */
- $h->X = self::fe_sq($v3);
- $h->X = self::fe_mul($h->X, $v);
- $h->X = self::fe_mul($h->X, $u); /* x = uv^7 */
-
- # fe_pow22523(h->X,h->X); /* x = (uv^7)^((q-5)/8) */
- # fe_mul(h->X,h->X,v3);
- # fe_mul(h->X,h->X,u); /* x = uv^3(uv^7)^((q-5)/8) */
- $h->X = self::fe_pow22523($h->X); /* x = (uv^7)^((q-5)/8) */
- $h->X = self::fe_mul($h->X, $v3);
- $h->X = self::fe_mul($h->X, $u); /* x = uv^3(uv^7)^((q-5)/8) */
-
- # fe_sq(vxx,h->X);
- # fe_mul(vxx,vxx,v);
- # fe_sub(check,vxx,u); /* vx^2-u */
- $vxx = self::fe_sq($h->X);
- $vxx = self::fe_mul($vxx, $v);
- $check = self::fe_sub($vxx, $u); /* vx^2 - u */
-
- # if (fe_isnonzero(check)) {
- # fe_add(check,vxx,u); /* vx^2+u */
- # if (fe_isnonzero(check)) {
- # return -1;
- # }
- # fe_mul(h->X,h->X,sqrtm1);
- # }
- if (self::fe_isnonzero($check)) {
- $check = self::fe_add($vxx, $u); /* vx^2 + u */
- if (self::fe_isnonzero($check)) {
- throw new RangeException('Internal check failed.');
- }
- $h->X = self::fe_mul(
- $h->X,
- ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$sqrtm1)
- );
- }
-
- # if (fe_isnegative(h->X) == (s[31] >> 7)) {
- # fe_neg(h->X,h->X);
- # }
- $i = self::chrToInt($s[31]);
- if (self::fe_isnegative($h->X) === ($i >> 7)) {
- $h->X = self::fe_neg($h->X);
- }
-
- # fe_mul(h->T,h->X,h->Y);
- $h->T = self::fe_mul($h->X, $h->Y);
- return $h;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $R
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $q
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P1p1
- */
- public static function ge_madd(
- ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $R,
- ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p,
- ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $q
- ) {
- $r = clone $R;
- $r->X = self::fe_add($p->Y, $p->X);
- $r->Y = self::fe_sub($p->Y, $p->X);
- $r->Z = self::fe_mul($r->X, $q->yplusx);
- $r->Y = self::fe_mul($r->Y, $q->yminusx);
- $r->T = self::fe_mul($q->xy2d, $p->T);
- $t0 = self::fe_add(clone $p->Z, clone $p->Z);
- $r->X = self::fe_sub($r->Z, $r->Y);
- $r->Y = self::fe_add($r->Z, $r->Y);
- $r->Z = self::fe_add($t0, $r->T);
- $r->T = self::fe_sub($t0, $r->T);
-
- return $r;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $R
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $q
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P1p1
- */
- public static function ge_msub(
- ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $R,
- ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p,
- ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $q
- ) {
- $r = clone $R;
-
- $r->X = self::fe_add($p->Y, $p->X);
- $r->Y = self::fe_sub($p->Y, $p->X);
- $r->Z = self::fe_mul($r->X, $q->yminusx);
- $r->Y = self::fe_mul($r->Y, $q->yplusx);
- $r->T = self::fe_mul($q->xy2d, $p->T);
- $t0 = self::fe_add($p->Z, $p->Z);
- $r->X = self::fe_sub($r->Z, $r->Y);
- $r->Y = self::fe_add($r->Z, $r->Y);
- $r->Z = self::fe_sub($t0, $r->T);
- $r->T = self::fe_add($t0, $r->T);
-
- return $r;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $p
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P2
- */
- public static function ge_p1p1_to_p2(ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $p)
- {
- $r = new ParagonIE_Sodium_Core_Curve25519_Ge_P2();
- $r->X = self::fe_mul($p->X, $p->T);
- $r->Y = self::fe_mul($p->Y, $p->Z);
- $r->Z = self::fe_mul($p->Z, $p->T);
- return $r;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $p
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P3
- */
- public static function ge_p1p1_to_p3(ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $p)
- {
- $r = new ParagonIE_Sodium_Core_Curve25519_Ge_P3();
- $r->X = self::fe_mul($p->X, $p->T);
- $r->Y = self::fe_mul($p->Y, $p->Z);
- $r->Z = self::fe_mul($p->Z, $p->T);
- $r->T = self::fe_mul($p->X, $p->Y);
- return $r;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P2
- */
- public static function ge_p2_0()
- {
- return new ParagonIE_Sodium_Core_Curve25519_Ge_P2(
- self::fe_0(),
- self::fe_1(),
- self::fe_1()
- );
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P2 $p
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P1p1
- */
- public static function ge_p2_dbl(ParagonIE_Sodium_Core_Curve25519_Ge_P2 $p)
- {
- $r = new ParagonIE_Sodium_Core_Curve25519_Ge_P1p1();
-
- $r->X = self::fe_sq($p->X);
- $r->Z = self::fe_sq($p->Y);
- $r->T = self::fe_sq2($p->Z);
- $r->Y = self::fe_add($p->X, $p->Y);
- $t0 = self::fe_sq($r->Y);
- $r->Y = self::fe_add($r->Z, $r->X);
- $r->Z = self::fe_sub($r->Z, $r->X);
- $r->X = self::fe_sub($t0, $r->Y);
- $r->T = self::fe_sub($r->T, $r->Z);
-
- return $r;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P3
- */
- public static function ge_p3_0()
- {
- return new ParagonIE_Sodium_Core_Curve25519_Ge_P3(
- self::fe_0(),
- self::fe_1(),
- self::fe_1(),
- self::fe_0()
- );
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_Cached
- */
- public static function ge_p3_to_cached(ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p)
- {
- static $d2 = null;
- if ($d2 === null) {
- $d2 = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$d2);
- }
- /** @var ParagonIE_Sodium_Core_Curve25519_Fe $d2 */
- $r = new ParagonIE_Sodium_Core_Curve25519_Ge_Cached();
- $r->YplusX = self::fe_add($p->Y, $p->X);
- $r->YminusX = self::fe_sub($p->Y, $p->X);
- $r->Z = self::fe_copy($p->Z);
- $r->T2d = self::fe_mul($p->T, $d2);
- return $r;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P2
- */
- public static function ge_p3_to_p2(ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p)
- {
- return new ParagonIE_Sodium_Core_Curve25519_Ge_P2(
- self::fe_copy($p->X),
- self::fe_copy($p->Y),
- self::fe_copy($p->Z)
- );
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $h
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function ge_p3_tobytes(ParagonIE_Sodium_Core_Curve25519_Ge_P3 $h)
- {
- $recip = self::fe_invert($h->Z);
- $x = self::fe_mul($h->X, $recip);
- $y = self::fe_mul($h->Y, $recip);
- $s = self::fe_tobytes($y);
- $s[31] = self::intToChr(
- self::chrToInt($s[31]) ^ (self::fe_isnegative($x) << 7)
- );
- return $s;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P1p1
- */
- public static function ge_p3_dbl(ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p)
- {
- $q = self::ge_p3_to_p2($p);
- return self::ge_p2_dbl($q);
- }
-
- /**
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_Precomp
- */
- public static function ge_precomp_0()
- {
- return new ParagonIE_Sodium_Core_Curve25519_Ge_Precomp(
- self::fe_1(),
- self::fe_1(),
- self::fe_0()
- );
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param int $b
- * @param int $c
- * @return int
- */
- public static function equal($b, $c)
- {
- return (int) ((($b ^ $c) - 1) >> 31) & 1;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param int|string $char
- * @return int (1 = yes, 0 = no)
- * @throws SodiumException
- * @throws TypeError
- */
- public static function negative($char)
- {
- if (is_int($char)) {
- return ($char >> 63) & 1;
- }
- $x = self::chrToInt(self::substr($char, 0, 1));
- return (int) ($x >> 63);
- }
-
- /**
- * Conditional move
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $t
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $u
- * @param int $b
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_Precomp
- */
- public static function cmov(
- ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $t,
- ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $u,
- $b
- ) {
- if (!is_int($b)) {
- throw new InvalidArgumentException('Expected an integer.');
- }
- return new ParagonIE_Sodium_Core_Curve25519_Ge_Precomp(
- self::fe_cmov($t->yplusx, $u->yplusx, $b),
- self::fe_cmov($t->yminusx, $u->yminusx, $b),
- self::fe_cmov($t->xy2d, $u->xy2d, $b)
- );
- }
-
- /**
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_Cached $t
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_Cached $u
- * @param int $b
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_Cached
- */
- public static function ge_cmov_cached(
- ParagonIE_Sodium_Core_Curve25519_Ge_Cached $t,
- ParagonIE_Sodium_Core_Curve25519_Ge_Cached $u,
- $b
- ) {
- $b &= 1;
- $ret = new ParagonIE_Sodium_Core_Curve25519_Ge_Cached();
- $ret->YplusX = self::fe_cmov($t->YplusX, $u->YplusX, $b);
- $ret->YminusX = self::fe_cmov($t->YminusX, $u->YminusX, $b);
- $ret->Z = self::fe_cmov($t->Z, $u->Z, $b);
- $ret->T2d = self::fe_cmov($t->T2d, $u->T2d, $b);
- return $ret;
- }
-
- /**
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_Cached[] $cached
- * @param int $b
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_Cached
- * @throws SodiumException
- */
- public static function ge_cmov8_cached(array $cached, $b)
- {
- // const unsigned char bnegative = negative(b);
- // const unsigned char babs = b - (((-bnegative) & b) * ((signed char) 1 << 1));
- $bnegative = self::negative($b);
- $babs = $b - (((-$bnegative) & $b) << 1);
-
- // ge25519_cached_0(t);
- $t = new ParagonIE_Sodium_Core_Curve25519_Ge_Cached(
- self::fe_1(),
- self::fe_1(),
- self::fe_1(),
- self::fe_0()
- );
-
- // ge25519_cmov_cached(t, &cached[0], equal(babs, 1));
- // ge25519_cmov_cached(t, &cached[1], equal(babs, 2));
- // ge25519_cmov_cached(t, &cached[2], equal(babs, 3));
- // ge25519_cmov_cached(t, &cached[3], equal(babs, 4));
- // ge25519_cmov_cached(t, &cached[4], equal(babs, 5));
- // ge25519_cmov_cached(t, &cached[5], equal(babs, 6));
- // ge25519_cmov_cached(t, &cached[6], equal(babs, 7));
- // ge25519_cmov_cached(t, &cached[7], equal(babs, 8));
- for ($x = 0; $x < 8; ++$x) {
- $t = self::ge_cmov_cached($t, $cached[$x], self::equal($babs, $x + 1));
- }
-
- // fe25519_copy(minust.YplusX, t->YminusX);
- // fe25519_copy(minust.YminusX, t->YplusX);
- // fe25519_copy(minust.Z, t->Z);
- // fe25519_neg(minust.T2d, t->T2d);
- $minust = new ParagonIE_Sodium_Core_Curve25519_Ge_Cached(
- self::fe_copy($t->YminusX),
- self::fe_copy($t->YplusX),
- self::fe_copy($t->Z),
- self::fe_neg($t->T2d)
- );
- return self::ge_cmov_cached($t, $minust, $bnegative);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param int $pos
- * @param int $b
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_Precomp
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayOffset
- */
- public static function ge_select($pos = 0, $b = 0)
- {
- static $base = null;
- if ($base === null) {
- $base = array();
- /** @var int $i */
- foreach (self::$base as $i => $bas) {
- for ($j = 0; $j < 8; ++$j) {
- $base[$i][$j] = new ParagonIE_Sodium_Core_Curve25519_Ge_Precomp(
- ParagonIE_Sodium_Core_Curve25519_Fe::fromArray($bas[$j][0]),
- ParagonIE_Sodium_Core_Curve25519_Fe::fromArray($bas[$j][1]),
- ParagonIE_Sodium_Core_Curve25519_Fe::fromArray($bas[$j][2])
- );
- }
- }
- }
- /** @var array<int, array<int, ParagonIE_Sodium_Core_Curve25519_Ge_Precomp>> $base */
- if (!is_int($pos)) {
- throw new InvalidArgumentException('Position must be an integer');
- }
- if ($pos < 0 || $pos > 31) {
- throw new RangeException('Position is out of range [0, 31]');
- }
-
- /** @var int $bnegative */
- $bnegative = self::negative($b);
- /** @var int $babs */
- $babs = $b - (((-$bnegative) & $b) << 1);
-
- $t = self::ge_precomp_0();
- for ($i = 0; $i < 8; ++$i) {
- $t = self::cmov(
- $t,
- $base[$pos][$i],
- self::equal($babs, $i + 1)
- );
- }
- $minusT = new ParagonIE_Sodium_Core_Curve25519_Ge_Precomp(
- self::fe_copy($t->yminusx),
- self::fe_copy($t->yplusx),
- self::fe_neg($t->xy2d)
- );
- return self::cmov($t, $minusT, $bnegative);
- }
-
- /**
- * Subtract two group elements.
- *
- * r = p - q
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_Cached $q
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P1p1
- */
- public static function ge_sub(
- ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p,
- ParagonIE_Sodium_Core_Curve25519_Ge_Cached $q
- ) {
- $r = new ParagonIE_Sodium_Core_Curve25519_Ge_P1p1();
-
- $r->X = self::fe_add($p->Y, $p->X);
- $r->Y = self::fe_sub($p->Y, $p->X);
- $r->Z = self::fe_mul($r->X, $q->YminusX);
- $r->Y = self::fe_mul($r->Y, $q->YplusX);
- $r->T = self::fe_mul($q->T2d, $p->T);
- $r->X = self::fe_mul($p->Z, $q->Z);
- $t0 = self::fe_add($r->X, $r->X);
- $r->X = self::fe_sub($r->Z, $r->Y);
- $r->Y = self::fe_add($r->Z, $r->Y);
- $r->Z = self::fe_sub($t0, $r->T);
- $r->T = self::fe_add($t0, $r->T);
-
- return $r;
- }
-
- /**
- * Convert a group element to a byte string.
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P2 $h
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function ge_tobytes(ParagonIE_Sodium_Core_Curve25519_Ge_P2 $h)
- {
- $recip = self::fe_invert($h->Z);
- $x = self::fe_mul($h->X, $recip);
- $y = self::fe_mul($h->Y, $recip);
- $s = self::fe_tobytes($y);
- $s[31] = self::intToChr(
- self::chrToInt($s[31]) ^ (self::fe_isnegative($x) << 7)
- );
- return $s;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $a
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $A
- * @param string $b
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P2
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedArrayAccess
- */
- public static function ge_double_scalarmult_vartime(
- $a,
- ParagonIE_Sodium_Core_Curve25519_Ge_P3 $A,
- $b
- ) {
- /** @var array<int, ParagonIE_Sodium_Core_Curve25519_Ge_Cached> $Ai */
- $Ai = array();
-
- /** @var array<int, ParagonIE_Sodium_Core_Curve25519_Ge_Precomp> $Bi */
- static $Bi = array();
- if (!$Bi) {
- for ($i = 0; $i < 8; ++$i) {
- $Bi[$i] = new ParagonIE_Sodium_Core_Curve25519_Ge_Precomp(
- ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$base2[$i][0]),
- ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$base2[$i][1]),
- ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$base2[$i][2])
- );
- }
- }
- for ($i = 0; $i < 8; ++$i) {
- $Ai[$i] = new ParagonIE_Sodium_Core_Curve25519_Ge_Cached(
- self::fe_0(),
- self::fe_0(),
- self::fe_0(),
- self::fe_0()
- );
- }
-
- # slide(aslide,a);
- # slide(bslide,b);
- /** @var array<int, int> $aslide */
- $aslide = self::slide($a);
- /** @var array<int, int> $bslide */
- $bslide = self::slide($b);
-
- # ge_p3_to_cached(&Ai[0],A);
- # ge_p3_dbl(&t,A); ge_p1p1_to_p3(&A2,&t);
- $Ai[0] = self::ge_p3_to_cached($A);
- $t = self::ge_p3_dbl($A);
- $A2 = self::ge_p1p1_to_p3($t);
-
- # ge_add(&t,&A2,&Ai[0]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[1],&u);
- # ge_add(&t,&A2,&Ai[1]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[2],&u);
- # ge_add(&t,&A2,&Ai[2]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[3],&u);
- # ge_add(&t,&A2,&Ai[3]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[4],&u);
- # ge_add(&t,&A2,&Ai[4]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[5],&u);
- # ge_add(&t,&A2,&Ai[5]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[6],&u);
- # ge_add(&t,&A2,&Ai[6]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[7],&u);
- for ($i = 0; $i < 7; ++$i) {
- $t = self::ge_add($A2, $Ai[$i]);
- $u = self::ge_p1p1_to_p3($t);
- $Ai[$i + 1] = self::ge_p3_to_cached($u);
- }
-
- # ge_p2_0(r);
- $r = self::ge_p2_0();
-
- # for (i = 255;i >= 0;--i) {
- # if (aslide[i] || bslide[i]) break;
- # }
- $i = 255;
- for (; $i >= 0; --$i) {
- if ($aslide[$i] || $bslide[$i]) {
- break;
- }
- }
-
- # for (;i >= 0;--i) {
- for (; $i >= 0; --$i) {
- # ge_p2_dbl(&t,r);
- $t = self::ge_p2_dbl($r);
-
- # if (aslide[i] > 0) {
- if ($aslide[$i] > 0) {
- # ge_p1p1_to_p3(&u,&t);
- # ge_add(&t,&u,&Ai[aslide[i]/2]);
- $u = self::ge_p1p1_to_p3($t);
- $t = self::ge_add(
- $u,
- $Ai[(int) floor($aslide[$i] / 2)]
- );
- # } else if (aslide[i] < 0) {
- } elseif ($aslide[$i] < 0) {
- # ge_p1p1_to_p3(&u,&t);
- # ge_sub(&t,&u,&Ai[(-aslide[i])/2]);
- $u = self::ge_p1p1_to_p3($t);
- $t = self::ge_sub(
- $u,
- $Ai[(int) floor(-$aslide[$i] / 2)]
- );
- }
-
- # if (bslide[i] > 0) {
- if ($bslide[$i] > 0) {
- /** @var int $index */
- $index = (int) floor($bslide[$i] / 2);
- # ge_p1p1_to_p3(&u,&t);
- # ge_madd(&t,&u,&Bi[bslide[i]/2]);
- $u = self::ge_p1p1_to_p3($t);
- $t = self::ge_madd($t, $u, $Bi[$index]);
- # } else if (bslide[i] < 0) {
- } elseif ($bslide[$i] < 0) {
- /** @var int $index */
- $index = (int) floor(-$bslide[$i] / 2);
- # ge_p1p1_to_p3(&u,&t);
- # ge_msub(&t,&u,&Bi[(-bslide[i])/2]);
- $u = self::ge_p1p1_to_p3($t);
- $t = self::ge_msub($t, $u, $Bi[$index]);
- }
- # ge_p1p1_to_p2(r,&t);
- $r = self::ge_p1p1_to_p2($t);
- }
- return $r;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $a
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P3
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedOperand
- */
- public static function ge_scalarmult($a, $p)
- {
- $e = array_fill(0, 64, 0);
-
- /** @var ParagonIE_Sodium_Core_Curve25519_Ge_Cached[] $pi */
- $pi = array();
-
- // ge25519_p3_to_cached(&pi[1 - 1], p); /* p */
- $pi[0] = self::ge_p3_to_cached($p);
-
- // ge25519_p3_dbl(&t2, p);
- // ge25519_p1p1_to_p3(&p2, &t2);
- // ge25519_p3_to_cached(&pi[2 - 1], &p2); /* 2p = 2*p */
- $t2 = self::ge_p3_dbl($p);
- $p2 = self::ge_p1p1_to_p3($t2);
- $pi[1] = self::ge_p3_to_cached($p2);
-
- // ge25519_add_cached(&t3, p, &pi[2 - 1]);
- // ge25519_p1p1_to_p3(&p3, &t3);
- // ge25519_p3_to_cached(&pi[3 - 1], &p3); /* 3p = 2p+p */
- $t3 = self::ge_add($p, $pi[1]);
- $p3 = self::ge_p1p1_to_p3($t3);
- $pi[2] = self::ge_p3_to_cached($p3);
-
- // ge25519_p3_dbl(&t4, &p2);
- // ge25519_p1p1_to_p3(&p4, &t4);
- // ge25519_p3_to_cached(&pi[4 - 1], &p4); /* 4p = 2*2p */
- $t4 = self::ge_p3_dbl($p2);
- $p4 = self::ge_p1p1_to_p3($t4);
- $pi[3] = self::ge_p3_to_cached($p4);
-
- // ge25519_add_cached(&t5, p, &pi[4 - 1]);
- // ge25519_p1p1_to_p3(&p5, &t5);
- // ge25519_p3_to_cached(&pi[5 - 1], &p5); /* 5p = 4p+p */
- $t5 = self::ge_add($p, $pi[3]);
- $p5 = self::ge_p1p1_to_p3($t5);
- $pi[4] = self::ge_p3_to_cached($p5);
-
- // ge25519_p3_dbl(&t6, &p3);
- // ge25519_p1p1_to_p3(&p6, &t6);
- // ge25519_p3_to_cached(&pi[6 - 1], &p6); /* 6p = 2*3p */
- $t6 = self::ge_p3_dbl($p3);
- $p6 = self::ge_p1p1_to_p3($t6);
- $pi[5] = self::ge_p3_to_cached($p6);
-
- // ge25519_add_cached(&t7, p, &pi[6 - 1]);
- // ge25519_p1p1_to_p3(&p7, &t7);
- // ge25519_p3_to_cached(&pi[7 - 1], &p7); /* 7p = 6p+p */
- $t7 = self::ge_add($p, $pi[5]);
- $p7 = self::ge_p1p1_to_p3($t7);
- $pi[6] = self::ge_p3_to_cached($p7);
-
- // ge25519_p3_dbl(&t8, &p4);
- // ge25519_p1p1_to_p3(&p8, &t8);
- // ge25519_p3_to_cached(&pi[8 - 1], &p8); /* 8p = 2*4p */
- $t8 = self::ge_p3_dbl($p4);
- $p8 = self::ge_p1p1_to_p3($t8);
- $pi[7] = self::ge_p3_to_cached($p8);
-
-
- // for (i = 0; i < 32; ++i) {
- // e[2 * i + 0] = (a[i] >> 0) & 15;
- // e[2 * i + 1] = (a[i] >> 4) & 15;
- // }
- for ($i = 0; $i < 32; ++$i) {
- $e[($i << 1) ] = self::chrToInt($a[$i]) & 15;
- $e[($i << 1) + 1] = (self::chrToInt($a[$i]) >> 4) & 15;
- }
- // /* each e[i] is between 0 and 15 */
- // /* e[63] is between 0 and 7 */
-
- // carry = 0;
- // for (i = 0; i < 63; ++i) {
- // e[i] += carry;
- // carry = e[i] + 8;
- // carry >>= 4;
- // e[i] -= carry * ((signed char) 1 << 4);
- // }
- $carry = 0;
- for ($i = 0; $i < 64; ++$i) {
- $e[$i] += $carry;
- $carry = $e[$i] + 8;
- $carry >>= 4;
- $e[$i] -= $carry << 4;
- }
- // e[63] += carry;
- // /* each e[i] is between -8 and 8 */
- $e[63] += $carry;
-
- // ge25519_p3_0(h);
- $h = self::ge_p3_0();
-
- // for (i = 63; i != 0; i--) {
- for ($i = 63; $i != 0; --$i) {
- // ge25519_cmov8_cached(&t, pi, e[i]);
- $t = self::ge_cmov8_cached($pi, $e[$i]);
- // ge25519_add_cached(&r, h, &t);
- $r = self::ge_add($h, $t);
-
- // ge25519_p1p1_to_p2(&s, &r);
- // ge25519_p2_dbl(&r, &s);
- // ge25519_p1p1_to_p2(&s, &r);
- // ge25519_p2_dbl(&r, &s);
- // ge25519_p1p1_to_p2(&s, &r);
- // ge25519_p2_dbl(&r, &s);
- // ge25519_p1p1_to_p2(&s, &r);
- // ge25519_p2_dbl(&r, &s);
- $s = self::ge_p1p1_to_p2($r);
- $r = self::ge_p2_dbl($s);
- $s = self::ge_p1p1_to_p2($r);
- $r = self::ge_p2_dbl($s);
- $s = self::ge_p1p1_to_p2($r);
- $r = self::ge_p2_dbl($s);
- $s = self::ge_p1p1_to_p2($r);
- $r = self::ge_p2_dbl($s);
-
- // ge25519_p1p1_to_p3(h, &r); /* *16 */
- $h = self::ge_p1p1_to_p3($r); /* *16 */
- }
-
- // ge25519_cmov8_cached(&t, pi, e[i]);
- // ge25519_add_cached(&r, h, &t);
- // ge25519_p1p1_to_p3(h, &r);
- $t = self::ge_cmov8_cached($pi, $e[0]);
- $r = self::ge_add($h, $t);
- return self::ge_p1p1_to_p3($r);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $a
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P3
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedOperand
- */
- public static function ge_scalarmult_base($a)
- {
- /** @var array<int, int> $e */
- $e = array();
- $r = new ParagonIE_Sodium_Core_Curve25519_Ge_P1p1();
-
- for ($i = 0; $i < 32; ++$i) {
- /** @var int $dbl */
- $dbl = (int) $i << 1;
- $e[$dbl] = (int) self::chrToInt($a[$i]) & 15;
- $e[$dbl + 1] = (int) (self::chrToInt($a[$i]) >> 4) & 15;
- }
-
- /** @var int $carry */
- $carry = 0;
- for ($i = 0; $i < 63; ++$i) {
- $e[$i] += $carry;
- /** @var int $carry */
- $carry = $e[$i] + 8;
- /** @var int $carry */
- $carry >>= 4;
- $e[$i] -= $carry << 4;
- }
- /** @var array<int, int> $e */
- $e[63] += (int) $carry;
-
- $h = self::ge_p3_0();
-
- for ($i = 1; $i < 64; $i += 2) {
- $t = self::ge_select((int) floor($i / 2), (int) $e[$i]);
- $r = self::ge_madd($r, $h, $t);
- $h = self::ge_p1p1_to_p3($r);
- }
-
- $r = self::ge_p3_dbl($h);
-
- $s = self::ge_p1p1_to_p2($r);
- $r = self::ge_p2_dbl($s);
- $s = self::ge_p1p1_to_p2($r);
- $r = self::ge_p2_dbl($s);
- $s = self::ge_p1p1_to_p2($r);
- $r = self::ge_p2_dbl($s);
-
- $h = self::ge_p1p1_to_p3($r);
-
- for ($i = 0; $i < 64; $i += 2) {
- $t = self::ge_select($i >> 1, (int) $e[$i]);
- $r = self::ge_madd($r, $h, $t);
- $h = self::ge_p1p1_to_p3($r);
- }
- return $h;
- }
-
- /**
- * Calculates (ab + c) mod l
- * where l = 2^252 + 27742317777372353535851937790883648493
- *
- * @internal You should not use this directly from another application
- *
- * @param string $a
- * @param string $b
- * @param string $c
- * @return string
- * @throws TypeError
- */
- public static function sc_muladd($a, $b, $c)
- {
- /** @var int $a0 */
- $a0 = 2097151 & self::load_3(self::substr($a, 0, 3));
- /** @var int $a1 */
- $a1 = 2097151 & (self::load_4(self::substr($a, 2, 4)) >> 5);
- /** @var int $a2 */
- $a2 = 2097151 & (self::load_3(self::substr($a, 5, 3)) >> 2);
- /** @var int $a3 */
- $a3 = 2097151 & (self::load_4(self::substr($a, 7, 4)) >> 7);
- /** @var int $a4 */
- $a4 = 2097151 & (self::load_4(self::substr($a, 10, 4)) >> 4);
- /** @var int $a5 */
- $a5 = 2097151 & (self::load_3(self::substr($a, 13, 3)) >> 1);
- /** @var int $a6 */
- $a6 = 2097151 & (self::load_4(self::substr($a, 15, 4)) >> 6);
- /** @var int $a7 */
- $a7 = 2097151 & (self::load_3(self::substr($a, 18, 3)) >> 3);
- /** @var int $a8 */
- $a8 = 2097151 & self::load_3(self::substr($a, 21, 3));
- /** @var int $a9 */
- $a9 = 2097151 & (self::load_4(self::substr($a, 23, 4)) >> 5);
- /** @var int $a10 */
- $a10 = 2097151 & (self::load_3(self::substr($a, 26, 3)) >> 2);
- /** @var int $a11 */
- $a11 = (self::load_4(self::substr($a, 28, 4)) >> 7);
-
- /** @var int $b0 */
- $b0 = 2097151 & self::load_3(self::substr($b, 0, 3));
- /** @var int $b1 */
- $b1 = 2097151 & (self::load_4(self::substr($b, 2, 4)) >> 5);
- /** @var int $b2 */
- $b2 = 2097151 & (self::load_3(self::substr($b, 5, 3)) >> 2);
- /** @var int $b3 */
- $b3 = 2097151 & (self::load_4(self::substr($b, 7, 4)) >> 7);
- /** @var int $b4 */
- $b4 = 2097151 & (self::load_4(self::substr($b, 10, 4)) >> 4);
- /** @var int $b5 */
- $b5 = 2097151 & (self::load_3(self::substr($b, 13, 3)) >> 1);
- /** @var int $b6 */
- $b6 = 2097151 & (self::load_4(self::substr($b, 15, 4)) >> 6);
- /** @var int $b7 */
- $b7 = 2097151 & (self::load_3(self::substr($b, 18, 3)) >> 3);
- /** @var int $b8 */
- $b8 = 2097151 & self::load_3(self::substr($b, 21, 3));
- /** @var int $b9 */
- $b9 = 2097151 & (self::load_4(self::substr($b, 23, 4)) >> 5);
- /** @var int $b10 */
- $b10 = 2097151 & (self::load_3(self::substr($b, 26, 3)) >> 2);
- /** @var int $b11 */
- $b11 = (self::load_4(self::substr($b, 28, 4)) >> 7);
-
- /** @var int $c0 */
- $c0 = 2097151 & self::load_3(self::substr($c, 0, 3));
- /** @var int $c1 */
- $c1 = 2097151 & (self::load_4(self::substr($c, 2, 4)) >> 5);
- /** @var int $c2 */
- $c2 = 2097151 & (self::load_3(self::substr($c, 5, 3)) >> 2);
- /** @var int $c3 */
- $c3 = 2097151 & (self::load_4(self::substr($c, 7, 4)) >> 7);
- /** @var int $c4 */
- $c4 = 2097151 & (self::load_4(self::substr($c, 10, 4)) >> 4);
- /** @var int $c5 */
- $c5 = 2097151 & (self::load_3(self::substr($c, 13, 3)) >> 1);
- /** @var int $c6 */
- $c6 = 2097151 & (self::load_4(self::substr($c, 15, 4)) >> 6);
- /** @var int $c7 */
- $c7 = 2097151 & (self::load_3(self::substr($c, 18, 3)) >> 3);
- /** @var int $c8 */
- $c8 = 2097151 & self::load_3(self::substr($c, 21, 3));
- /** @var int $c9 */
- $c9 = 2097151 & (self::load_4(self::substr($c, 23, 4)) >> 5);
- /** @var int $c10 */
- $c10 = 2097151 & (self::load_3(self::substr($c, 26, 3)) >> 2);
- /** @var int $c11 */
- $c11 = (self::load_4(self::substr($c, 28, 4)) >> 7);
-
- /* Can't really avoid the pyramid here: */
- $s0 = $c0 + self::mul($a0, $b0, 24);
- $s1 = $c1 + self::mul($a0, $b1, 24) + self::mul($a1, $b0, 24);
- $s2 = $c2 + self::mul($a0, $b2, 24) + self::mul($a1, $b1, 24) + self::mul($a2, $b0, 24);
- $s3 = $c3 + self::mul($a0, $b3, 24) + self::mul($a1, $b2, 24) + self::mul($a2, $b1, 24) + self::mul($a3, $b0, 24);
- $s4 = $c4 + self::mul($a0, $b4, 24) + self::mul($a1, $b3, 24) + self::mul($a2, $b2, 24) + self::mul($a3, $b1, 24) +
- self::mul($a4, $b0, 24);
- $s5 = $c5 + self::mul($a0, $b5, 24) + self::mul($a1, $b4, 24) + self::mul($a2, $b3, 24) + self::mul($a3, $b2, 24) +
- self::mul($a4, $b1, 24) + self::mul($a5, $b0, 24);
- $s6 = $c6 + self::mul($a0, $b6, 24) + self::mul($a1, $b5, 24) + self::mul($a2, $b4, 24) + self::mul($a3, $b3, 24) +
- self::mul($a4, $b2, 24) + self::mul($a5, $b1, 24) + self::mul($a6, $b0, 24);
- $s7 = $c7 + self::mul($a0, $b7, 24) + self::mul($a1, $b6, 24) + self::mul($a2, $b5, 24) + self::mul($a3, $b4, 24) +
- self::mul($a4, $b3, 24) + self::mul($a5, $b2, 24) + self::mul($a6, $b1, 24) + self::mul($a7, $b0, 24);
- $s8 = $c8 + self::mul($a0, $b8, 24) + self::mul($a1, $b7, 24) + self::mul($a2, $b6, 24) + self::mul($a3, $b5, 24) +
- self::mul($a4, $b4, 24) + self::mul($a5, $b3, 24) + self::mul($a6, $b2, 24) + self::mul($a7, $b1, 24) +
- self::mul($a8, $b0, 24);
- $s9 = $c9 + self::mul($a0, $b9, 24) + self::mul($a1, $b8, 24) + self::mul($a2, $b7, 24) + self::mul($a3, $b6, 24) +
- self::mul($a4, $b5, 24) + self::mul($a5, $b4, 24) + self::mul($a6, $b3, 24) + self::mul($a7, $b2, 24) +
- self::mul($a8, $b1, 24) + self::mul($a9, $b0, 24);
- $s10 = $c10 + self::mul($a0, $b10, 24) + self::mul($a1, $b9, 24) + self::mul($a2, $b8, 24) + self::mul($a3, $b7, 24) +
- self::mul($a4, $b6, 24) + self::mul($a5, $b5, 24) + self::mul($a6, $b4, 24) + self::mul($a7, $b3, 24) +
- self::mul($a8, $b2, 24) + self::mul($a9, $b1, 24) + self::mul($a10, $b0, 24);
- $s11 = $c11 + self::mul($a0, $b11, 24) + self::mul($a1, $b10, 24) + self::mul($a2, $b9, 24) + self::mul($a3, $b8, 24) +
- self::mul($a4, $b7, 24) + self::mul($a5, $b6, 24) + self::mul($a6, $b5, 24) + self::mul($a7, $b4, 24) +
- self::mul($a8, $b3, 24) + self::mul($a9, $b2, 24) + self::mul($a10, $b1, 24) + self::mul($a11, $b0, 24);
- $s12 = self::mul($a1, $b11, 24) + self::mul($a2, $b10, 24) + self::mul($a3, $b9, 24) + self::mul($a4, $b8, 24) +
- self::mul($a5, $b7, 24) + self::mul($a6, $b6, 24) + self::mul($a7, $b5, 24) + self::mul($a8, $b4, 24) +
- self::mul($a9, $b3, 24) + self::mul($a10, $b2, 24) + self::mul($a11, $b1, 24);
- $s13 = self::mul($a2, $b11, 24) + self::mul($a3, $b10, 24) + self::mul($a4, $b9, 24) + self::mul($a5, $b8, 24) +
- self::mul($a6, $b7, 24) + self::mul($a7, $b6, 24) + self::mul($a8, $b5, 24) + self::mul($a9, $b4, 24) +
- self::mul($a10, $b3, 24) + self::mul($a11, $b2, 24);
- $s14 = self::mul($a3, $b11, 24) + self::mul($a4, $b10, 24) + self::mul($a5, $b9, 24) + self::mul($a6, $b8, 24) +
- self::mul($a7, $b7, 24) + self::mul($a8, $b6, 24) + self::mul($a9, $b5, 24) + self::mul($a10, $b4, 24) +
- self::mul($a11, $b3, 24);
- $s15 = self::mul($a4, $b11, 24) + self::mul($a5, $b10, 24) + self::mul($a6, $b9, 24) + self::mul($a7, $b8, 24) +
- self::mul($a8, $b7, 24) + self::mul($a9, $b6, 24) + self::mul($a10, $b5, 24) + self::mul($a11, $b4, 24);
- $s16 = self::mul($a5, $b11, 24) + self::mul($a6, $b10, 24) + self::mul($a7, $b9, 24) + self::mul($a8, $b8, 24) +
- self::mul($a9, $b7, 24) + self::mul($a10, $b6, 24) + self::mul($a11, $b5, 24);
- $s17 = self::mul($a6, $b11, 24) + self::mul($a7, $b10, 24) + self::mul($a8, $b9, 24) + self::mul($a9, $b8, 24) +
- self::mul($a10, $b7, 24) + self::mul($a11, $b6, 24);
- $s18 = self::mul($a7, $b11, 24) + self::mul($a8, $b10, 24) + self::mul($a9, $b9, 24) + self::mul($a10, $b8, 24) +
- self::mul($a11, $b7, 24);
- $s19 = self::mul($a8, $b11, 24) + self::mul($a9, $b10, 24) + self::mul($a10, $b9, 24) + self::mul($a11, $b8, 24);
- $s20 = self::mul($a9, $b11, 24) + self::mul($a10, $b10, 24) + self::mul($a11, $b9, 24);
- $s21 = self::mul($a10, $b11, 24) + self::mul($a11, $b10, 24);
- $s22 = self::mul($a11, $b11, 24);
- $s23 = 0;
-
- /** @var int $carry0 */
- $carry0 = ($s0 + (1 << 20)) >> 21;
- $s1 += $carry0;
- $s0 -= $carry0 << 21;
- /** @var int $carry2 */
- $carry2 = ($s2 + (1 << 20)) >> 21;
- $s3 += $carry2;
- $s2 -= $carry2 << 21;
- /** @var int $carry4 */
- $carry4 = ($s4 + (1 << 20)) >> 21;
- $s5 += $carry4;
- $s4 -= $carry4 << 21;
- /** @var int $carry6 */
- $carry6 = ($s6 + (1 << 20)) >> 21;
- $s7 += $carry6;
- $s6 -= $carry6 << 21;
- /** @var int $carry8 */
- $carry8 = ($s8 + (1 << 20)) >> 21;
- $s9 += $carry8;
- $s8 -= $carry8 << 21;
- /** @var int $carry10 */
- $carry10 = ($s10 + (1 << 20)) >> 21;
- $s11 += $carry10;
- $s10 -= $carry10 << 21;
- /** @var int $carry12 */
- $carry12 = ($s12 + (1 << 20)) >> 21;
- $s13 += $carry12;
- $s12 -= $carry12 << 21;
- /** @var int $carry14 */
- $carry14 = ($s14 + (1 << 20)) >> 21;
- $s15 += $carry14;
- $s14 -= $carry14 << 21;
- /** @var int $carry16 */
- $carry16 = ($s16 + (1 << 20)) >> 21;
- $s17 += $carry16;
- $s16 -= $carry16 << 21;
- /** @var int $carry18 */
- $carry18 = ($s18 + (1 << 20)) >> 21;
- $s19 += $carry18;
- $s18 -= $carry18 << 21;
- /** @var int $carry20 */
- $carry20 = ($s20 + (1 << 20)) >> 21;
- $s21 += $carry20;
- $s20 -= $carry20 << 21;
- /** @var int $carry22 */
- $carry22 = ($s22 + (1 << 20)) >> 21;
- $s23 += $carry22;
- $s22 -= $carry22 << 21;
-
- /** @var int $carry1 */
- $carry1 = ($s1 + (1 << 20)) >> 21;
- $s2 += $carry1;
- $s1 -= $carry1 << 21;
- /** @var int $carry3 */
- $carry3 = ($s3 + (1 << 20)) >> 21;
- $s4 += $carry3;
- $s3 -= $carry3 << 21;
- /** @var int $carry5 */
- $carry5 = ($s5 + (1 << 20)) >> 21;
- $s6 += $carry5;
- $s5 -= $carry5 << 21;
- /** @var int $carry7 */
- $carry7 = ($s7 + (1 << 20)) >> 21;
- $s8 += $carry7;
- $s7 -= $carry7 << 21;
- /** @var int $carry9 */
- $carry9 = ($s9 + (1 << 20)) >> 21;
- $s10 += $carry9;
- $s9 -= $carry9 << 21;
- /** @var int $carry11 */
- $carry11 = ($s11 + (1 << 20)) >> 21;
- $s12 += $carry11;
- $s11 -= $carry11 << 21;
- /** @var int $carry13 */
- $carry13 = ($s13 + (1 << 20)) >> 21;
- $s14 += $carry13;
- $s13 -= $carry13 << 21;
- /** @var int $carry15 */
- $carry15 = ($s15 + (1 << 20)) >> 21;
- $s16 += $carry15;
- $s15 -= $carry15 << 21;
- /** @var int $carry17 */
- $carry17 = ($s17 + (1 << 20)) >> 21;
- $s18 += $carry17;
- $s17 -= $carry17 << 21;
- /** @var int $carry19 */
- $carry19 = ($s19 + (1 << 20)) >> 21;
- $s20 += $carry19;
- $s19 -= $carry19 << 21;
- /** @var int $carry21 */
- $carry21 = ($s21 + (1 << 20)) >> 21;
- $s22 += $carry21;
- $s21 -= $carry21 << 21;
-
- $s11 += self::mul($s23, 666643, 20);
- $s12 += self::mul($s23, 470296, 19);
- $s13 += self::mul($s23, 654183, 20);
- $s14 -= self::mul($s23, 997805, 20);
- $s15 += self::mul($s23, 136657, 18);
- $s16 -= self::mul($s23, 683901, 20);
-
- $s10 += self::mul($s22, 666643, 20);
- $s11 += self::mul($s22, 470296, 19);
- $s12 += self::mul($s22, 654183, 20);
- $s13 -= self::mul($s22, 997805, 20);
- $s14 += self::mul($s22, 136657, 18);
- $s15 -= self::mul($s22, 683901, 20);
-
- $s9 += self::mul($s21, 666643, 20);
- $s10 += self::mul($s21, 470296, 19);
- $s11 += self::mul($s21, 654183, 20);
- $s12 -= self::mul($s21, 997805, 20);
- $s13 += self::mul($s21, 136657, 18);
- $s14 -= self::mul($s21, 683901, 20);
-
- $s8 += self::mul($s20, 666643, 20);
- $s9 += self::mul($s20, 470296, 19);
- $s10 += self::mul($s20, 654183, 20);
- $s11 -= self::mul($s20, 997805, 20);
- $s12 += self::mul($s20, 136657, 18);
- $s13 -= self::mul($s20, 683901, 20);
-
- $s7 += self::mul($s19, 666643, 20);
- $s8 += self::mul($s19, 470296, 19);
- $s9 += self::mul($s19, 654183, 20);
- $s10 -= self::mul($s19, 997805, 20);
- $s11 += self::mul($s19, 136657, 18);
- $s12 -= self::mul($s19, 683901, 20);
-
- $s6 += self::mul($s18, 666643, 20);
- $s7 += self::mul($s18, 470296, 19);
- $s8 += self::mul($s18, 654183, 20);
- $s9 -= self::mul($s18, 997805, 20);
- $s10 += self::mul($s18, 136657, 18);
- $s11 -= self::mul($s18, 683901, 20);
-
- /** @var int $carry6 */
- $carry6 = ($s6 + (1 << 20)) >> 21;
- $s7 += $carry6;
- $s6 -= $carry6 << 21;
- /** @var int $carry8 */
- $carry8 = ($s8 + (1 << 20)) >> 21;
- $s9 += $carry8;
- $s8 -= $carry8 << 21;
- /** @var int $carry10 */
- $carry10 = ($s10 + (1 << 20)) >> 21;
- $s11 += $carry10;
- $s10 -= $carry10 << 21;
- /** @var int $carry12 */
- $carry12 = ($s12 + (1 << 20)) >> 21;
- $s13 += $carry12;
- $s12 -= $carry12 << 21;
- /** @var int $carry14 */
- $carry14 = ($s14 + (1 << 20)) >> 21;
- $s15 += $carry14;
- $s14 -= $carry14 << 21;
- /** @var int $carry16 */
- $carry16 = ($s16 + (1 << 20)) >> 21;
- $s17 += $carry16;
- $s16 -= $carry16 << 21;
-
- /** @var int $carry7 */
- $carry7 = ($s7 + (1 << 20)) >> 21;
- $s8 += $carry7;
- $s7 -= $carry7 << 21;
- /** @var int $carry9 */
- $carry9 = ($s9 + (1 << 20)) >> 21;
- $s10 += $carry9;
- $s9 -= $carry9 << 21;
- /** @var int $carry11 */
- $carry11 = ($s11 + (1 << 20)) >> 21;
- $s12 += $carry11;
- $s11 -= $carry11 << 21;
- /** @var int $carry13 */
- $carry13 = ($s13 + (1 << 20)) >> 21;
- $s14 += $carry13;
- $s13 -= $carry13 << 21;
- /** @var int $carry15 */
- $carry15 = ($s15 + (1 << 20)) >> 21;
- $s16 += $carry15;
- $s15 -= $carry15 << 21;
-
- $s5 += self::mul($s17, 666643, 20);
- $s6 += self::mul($s17, 470296, 19);
- $s7 += self::mul($s17, 654183, 20);
- $s8 -= self::mul($s17, 997805, 20);
- $s9 += self::mul($s17, 136657, 18);
- $s10 -= self::mul($s17, 683901, 20);
-
- $s4 += self::mul($s16, 666643, 20);
- $s5 += self::mul($s16, 470296, 19);
- $s6 += self::mul($s16, 654183, 20);
- $s7 -= self::mul($s16, 997805, 20);
- $s8 += self::mul($s16, 136657, 18);
- $s9 -= self::mul($s16, 683901, 20);
-
- $s3 += self::mul($s15, 666643, 20);
- $s4 += self::mul($s15, 470296, 19);
- $s5 += self::mul($s15, 654183, 20);
- $s6 -= self::mul($s15, 997805, 20);
- $s7 += self::mul($s15, 136657, 18);
- $s8 -= self::mul($s15, 683901, 20);
-
- $s2 += self::mul($s14, 666643, 20);
- $s3 += self::mul($s14, 470296, 19);
- $s4 += self::mul($s14, 654183, 20);
- $s5 -= self::mul($s14, 997805, 20);
- $s6 += self::mul($s14, 136657, 18);
- $s7 -= self::mul($s14, 683901, 20);
-
- $s1 += self::mul($s13, 666643, 20);
- $s2 += self::mul($s13, 470296, 19);
- $s3 += self::mul($s13, 654183, 20);
- $s4 -= self::mul($s13, 997805, 20);
- $s5 += self::mul($s13, 136657, 18);
- $s6 -= self::mul($s13, 683901, 20);
-
- $s0 += self::mul($s12, 666643, 20);
- $s1 += self::mul($s12, 470296, 19);
- $s2 += self::mul($s12, 654183, 20);
- $s3 -= self::mul($s12, 997805, 20);
- $s4 += self::mul($s12, 136657, 18);
- $s5 -= self::mul($s12, 683901, 20);
- $s12 = 0;
-
- /** @var int $carry0 */
- $carry0 = ($s0 + (1 << 20)) >> 21;
- $s1 += $carry0;
- $s0 -= $carry0 << 21;
- /** @var int $carry2 */
- $carry2 = ($s2 + (1 << 20)) >> 21;
- $s3 += $carry2;
- $s2 -= $carry2 << 21;
- /** @var int $carry4 */
- $carry4 = ($s4 + (1 << 20)) >> 21;
- $s5 += $carry4;
- $s4 -= $carry4 << 21;
- /** @var int $carry6 */
- $carry6 = ($s6 + (1 << 20)) >> 21;
- $s7 += $carry6;
- $s6 -= $carry6 << 21;
- /** @var int $carry8 */
- $carry8 = ($s8 + (1 << 20)) >> 21;
- $s9 += $carry8;
- $s8 -= $carry8 << 21;
- /** @var int $carry10 */
- $carry10 = ($s10 + (1 << 20)) >> 21;
- $s11 += $carry10;
- $s10 -= $carry10 << 21;
-
- /** @var int $carry1 */
- $carry1 = ($s1 + (1 << 20)) >> 21;
- $s2 += $carry1;
- $s1 -= $carry1 << 21;
- /** @var int $carry3 */
- $carry3 = ($s3 + (1 << 20)) >> 21;
- $s4 += $carry3;
- $s3 -= $carry3 << 21;
- /** @var int $carry5 */
- $carry5 = ($s5 + (1 << 20)) >> 21;
- $s6 += $carry5;
- $s5 -= $carry5 << 21;
- /** @var int $carry7 */
- $carry7 = ($s7 + (1 << 20)) >> 21;
- $s8 += $carry7;
- $s7 -= $carry7 << 21;
- /** @var int $carry9 */
- $carry9 = ($s9 + (1 << 20)) >> 21;
- $s10 += $carry9;
- $s9 -= $carry9 << 21;
- /** @var int $carry11 */
- $carry11 = ($s11 + (1 << 20)) >> 21;
- $s12 += $carry11;
- $s11 -= $carry11 << 21;
-
- $s0 += self::mul($s12, 666643, 20);
- $s1 += self::mul($s12, 470296, 19);
- $s2 += self::mul($s12, 654183, 20);
- $s3 -= self::mul($s12, 997805, 20);
- $s4 += self::mul($s12, 136657, 18);
- $s5 -= self::mul($s12, 683901, 20);
- $s12 = 0;
-
- /** @var int $carry0 */
- $carry0 = $s0 >> 21;
- $s1 += $carry0;
- $s0 -= $carry0 << 21;
- /** @var int $carry1 */
- $carry1 = $s1 >> 21;
- $s2 += $carry1;
- $s1 -= $carry1 << 21;
- /** @var int $carry2 */
- $carry2 = $s2 >> 21;
- $s3 += $carry2;
- $s2 -= $carry2 << 21;
- /** @var int $carry3 */
- $carry3 = $s3 >> 21;
- $s4 += $carry3;
- $s3 -= $carry3 << 21;
- /** @var int $carry4 */
- $carry4 = $s4 >> 21;
- $s5 += $carry4;
- $s4 -= $carry4 << 21;
- /** @var int $carry5 */
- $carry5 = $s5 >> 21;
- $s6 += $carry5;
- $s5 -= $carry5 << 21;
- /** @var int $carry6 */
- $carry6 = $s6 >> 21;
- $s7 += $carry6;
- $s6 -= $carry6 << 21;
- /** @var int $carry7 */
- $carry7 = $s7 >> 21;
- $s8 += $carry7;
- $s7 -= $carry7 << 21;
- /** @var int $carry8 */
- $carry8 = $s8 >> 21;
- $s9 += $carry8;
- $s8 -= $carry8 << 21;
- /** @var int $carry9 */
- $carry9 = $s9 >> 21;
- $s10 += $carry9;
- $s9 -= $carry9 << 21;
- /** @var int $carry10 */
- $carry10 = $s10 >> 21;
- $s11 += $carry10;
- $s10 -= $carry10 << 21;
- /** @var int $carry11 */
- $carry11 = $s11 >> 21;
- $s12 += $carry11;
- $s11 -= $carry11 << 21;
-
- $s0 += self::mul($s12, 666643, 20);
- $s1 += self::mul($s12, 470296, 19);
- $s2 += self::mul($s12, 654183, 20);
- $s3 -= self::mul($s12, 997805, 20);
- $s4 += self::mul($s12, 136657, 18);
- $s5 -= self::mul($s12, 683901, 20);
-
- /** @var int $carry0 */
- $carry0 = $s0 >> 21;
- $s1 += $carry0;
- $s0 -= $carry0 << 21;
- /** @var int $carry1 */
- $carry1 = $s1 >> 21;
- $s2 += $carry1;
- $s1 -= $carry1 << 21;
- /** @var int $carry2 */
- $carry2 = $s2 >> 21;
- $s3 += $carry2;
- $s2 -= $carry2 << 21;
- /** @var int $carry3 */
- $carry3 = $s3 >> 21;
- $s4 += $carry3;
- $s3 -= $carry3 << 21;
- /** @var int $carry4 */
- $carry4 = $s4 >> 21;
- $s5 += $carry4;
- $s4 -= $carry4 << 21;
- /** @var int $carry5 */
- $carry5 = $s5 >> 21;
- $s6 += $carry5;
- $s5 -= $carry5 << 21;
- /** @var int $carry6 */
- $carry6 = $s6 >> 21;
- $s7 += $carry6;
- $s6 -= $carry6 << 21;
- /** @var int $carry7 */
- $carry7 = $s7 >> 21;
- $s8 += $carry7;
- $s7 -= $carry7 << 21;
- /** @var int $carry8 */
- $carry8 = $s8 >> 21;
- $s9 += $carry8;
- $s8 -= $carry8 << 21;
- /** @var int $carry9 */
- $carry9 = $s9 >> 21;
- $s10 += $carry9;
- $s9 -= $carry9 << 21;
- /** @var int $carry10 */
- $carry10 = $s10 >> 21;
- $s11 += $carry10;
- $s10 -= $carry10 << 21;
-
- /**
- * @var array<int, int>
- */
- $arr = array(
- (int) (0xff & ($s0 >> 0)),
- (int) (0xff & ($s0 >> 8)),
- (int) (0xff & (($s0 >> 16) | $s1 << 5)),
- (int) (0xff & ($s1 >> 3)),
- (int) (0xff & ($s1 >> 11)),
- (int) (0xff & (($s1 >> 19) | $s2 << 2)),
- (int) (0xff & ($s2 >> 6)),
- (int) (0xff & (($s2 >> 14) | $s3 << 7)),
- (int) (0xff & ($s3 >> 1)),
- (int) (0xff & ($s3 >> 9)),
- (int) (0xff & (($s3 >> 17) | $s4 << 4)),
- (int) (0xff & ($s4 >> 4)),
- (int) (0xff & ($s4 >> 12)),
- (int) (0xff & (($s4 >> 20) | $s5 << 1)),
- (int) (0xff & ($s5 >> 7)),
- (int) (0xff & (($s5 >> 15) | $s6 << 6)),
- (int) (0xff & ($s6 >> 2)),
- (int) (0xff & ($s6 >> 10)),
- (int) (0xff & (($s6 >> 18) | $s7 << 3)),
- (int) (0xff & ($s7 >> 5)),
- (int) (0xff & ($s7 >> 13)),
- (int) (0xff & ($s8 >> 0)),
- (int) (0xff & ($s8 >> 8)),
- (int) (0xff & (($s8 >> 16) | $s9 << 5)),
- (int) (0xff & ($s9 >> 3)),
- (int) (0xff & ($s9 >> 11)),
- (int) (0xff & (($s9 >> 19) | $s10 << 2)),
- (int) (0xff & ($s10 >> 6)),
- (int) (0xff & (($s10 >> 14) | $s11 << 7)),
- (int) (0xff & ($s11 >> 1)),
- (int) (0xff & ($s11 >> 9)),
- 0xff & ($s11 >> 17)
- );
- return self::intArrayToString($arr);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $s
- * @return string
- * @throws TypeError
- */
- public static function sc_reduce($s)
- {
- /** @var int $s0 */
- $s0 = 2097151 & self::load_3(self::substr($s, 0, 3));
- /** @var int $s1 */
- $s1 = 2097151 & (self::load_4(self::substr($s, 2, 4)) >> 5);
- /** @var int $s2 */
- $s2 = 2097151 & (self::load_3(self::substr($s, 5, 3)) >> 2);
- /** @var int $s3 */
- $s3 = 2097151 & (self::load_4(self::substr($s, 7, 4)) >> 7);
- /** @var int $s4 */
- $s4 = 2097151 & (self::load_4(self::substr($s, 10, 4)) >> 4);
- /** @var int $s5 */
- $s5 = 2097151 & (self::load_3(self::substr($s, 13, 3)) >> 1);
- /** @var int $s6 */
- $s6 = 2097151 & (self::load_4(self::substr($s, 15, 4)) >> 6);
- /** @var int $s7 */
- $s7 = 2097151 & (self::load_3(self::substr($s, 18, 4)) >> 3);
- /** @var int $s8 */
- $s8 = 2097151 & self::load_3(self::substr($s, 21, 3));
- /** @var int $s9 */
- $s9 = 2097151 & (self::load_4(self::substr($s, 23, 4)) >> 5);
- /** @var int $s10 */
- $s10 = 2097151 & (self::load_3(self::substr($s, 26, 3)) >> 2);
- /** @var int $s11 */
- $s11 = 2097151 & (self::load_4(self::substr($s, 28, 4)) >> 7);
- /** @var int $s12 */
- $s12 = 2097151 & (self::load_4(self::substr($s, 31, 4)) >> 4);
- /** @var int $s13 */
- $s13 = 2097151 & (self::load_3(self::substr($s, 34, 3)) >> 1);
- /** @var int $s14 */
- $s14 = 2097151 & (self::load_4(self::substr($s, 36, 4)) >> 6);
- /** @var int $s15 */
- $s15 = 2097151 & (self::load_3(self::substr($s, 39, 4)) >> 3);
- /** @var int $s16 */
- $s16 = 2097151 & self::load_3(self::substr($s, 42, 3));
- /** @var int $s17 */
- $s17 = 2097151 & (self::load_4(self::substr($s, 44, 4)) >> 5);
- /** @var int $s18 */
- $s18 = 2097151 & (self::load_3(self::substr($s, 47, 3)) >> 2);
- /** @var int $s19 */
- $s19 = 2097151 & (self::load_4(self::substr($s, 49, 4)) >> 7);
- /** @var int $s20 */
- $s20 = 2097151 & (self::load_4(self::substr($s, 52, 4)) >> 4);
- /** @var int $s21 */
- $s21 = 2097151 & (self::load_3(self::substr($s, 55, 3)) >> 1);
- /** @var int $s22 */
- $s22 = 2097151 & (self::load_4(self::substr($s, 57, 4)) >> 6);
- /** @var int $s23 */
- $s23 = (self::load_4(self::substr($s, 60, 4)) >> 3);
-
- $s11 += self::mul($s23, 666643, 20);
- $s12 += self::mul($s23, 470296, 19);
- $s13 += self::mul($s23, 654183, 20);
- $s14 -= self::mul($s23, 997805, 20);
- $s15 += self::mul($s23, 136657, 18);
- $s16 -= self::mul($s23, 683901, 20);
-
- $s10 += self::mul($s22, 666643, 20);
- $s11 += self::mul($s22, 470296, 19);
- $s12 += self::mul($s22, 654183, 20);
- $s13 -= self::mul($s22, 997805, 20);
- $s14 += self::mul($s22, 136657, 18);
- $s15 -= self::mul($s22, 683901, 20);
-
- $s9 += self::mul($s21, 666643, 20);
- $s10 += self::mul($s21, 470296, 19);
- $s11 += self::mul($s21, 654183, 20);
- $s12 -= self::mul($s21, 997805, 20);
- $s13 += self::mul($s21, 136657, 18);
- $s14 -= self::mul($s21, 683901, 20);
-
- $s8 += self::mul($s20, 666643, 20);
- $s9 += self::mul($s20, 470296, 19);
- $s10 += self::mul($s20, 654183, 20);
- $s11 -= self::mul($s20, 997805, 20);
- $s12 += self::mul($s20, 136657, 18);
- $s13 -= self::mul($s20, 683901, 20);
-
- $s7 += self::mul($s19, 666643, 20);
- $s8 += self::mul($s19, 470296, 19);
- $s9 += self::mul($s19, 654183, 20);
- $s10 -= self::mul($s19, 997805, 20);
- $s11 += self::mul($s19, 136657, 18);
- $s12 -= self::mul($s19, 683901, 20);
-
- $s6 += self::mul($s18, 666643, 20);
- $s7 += self::mul($s18, 470296, 19);
- $s8 += self::mul($s18, 654183, 20);
- $s9 -= self::mul($s18, 997805, 20);
- $s10 += self::mul($s18, 136657, 18);
- $s11 -= self::mul($s18, 683901, 20);
-
- /** @var int $carry6 */
- $carry6 = ($s6 + (1 << 20)) >> 21;
- $s7 += $carry6;
- $s6 -= $carry6 << 21;
- /** @var int $carry8 */
- $carry8 = ($s8 + (1 << 20)) >> 21;
- $s9 += $carry8;
- $s8 -= $carry8 << 21;
- /** @var int $carry10 */
- $carry10 = ($s10 + (1 << 20)) >> 21;
- $s11 += $carry10;
- $s10 -= $carry10 << 21;
- /** @var int $carry12 */
- $carry12 = ($s12 + (1 << 20)) >> 21;
- $s13 += $carry12;
- $s12 -= $carry12 << 21;
- /** @var int $carry14 */
- $carry14 = ($s14 + (1 << 20)) >> 21;
- $s15 += $carry14;
- $s14 -= $carry14 << 21;
- /** @var int $carry16 */
- $carry16 = ($s16 + (1 << 20)) >> 21;
- $s17 += $carry16;
- $s16 -= $carry16 << 21;
-
- /** @var int $carry7 */
- $carry7 = ($s7 + (1 << 20)) >> 21;
- $s8 += $carry7;
- $s7 -= $carry7 << 21;
- /** @var int $carry9 */
- $carry9 = ($s9 + (1 << 20)) >> 21;
- $s10 += $carry9;
- $s9 -= $carry9 << 21;
- /** @var int $carry11 */
- $carry11 = ($s11 + (1 << 20)) >> 21;
- $s12 += $carry11;
- $s11 -= $carry11 << 21;
- /** @var int $carry13 */
- $carry13 = ($s13 + (1 << 20)) >> 21;
- $s14 += $carry13;
- $s13 -= $carry13 << 21;
- /** @var int $carry15 */
- $carry15 = ($s15 + (1 << 20)) >> 21;
- $s16 += $carry15;
- $s15 -= $carry15 << 21;
-
- $s5 += self::mul($s17, 666643, 20);
- $s6 += self::mul($s17, 470296, 19);
- $s7 += self::mul($s17, 654183, 20);
- $s8 -= self::mul($s17, 997805, 20);
- $s9 += self::mul($s17, 136657, 18);
- $s10 -= self::mul($s17, 683901, 20);
-
- $s4 += self::mul($s16, 666643, 20);
- $s5 += self::mul($s16, 470296, 19);
- $s6 += self::mul($s16, 654183, 20);
- $s7 -= self::mul($s16, 997805, 20);
- $s8 += self::mul($s16, 136657, 18);
- $s9 -= self::mul($s16, 683901, 20);
-
- $s3 += self::mul($s15, 666643, 20);
- $s4 += self::mul($s15, 470296, 19);
- $s5 += self::mul($s15, 654183, 20);
- $s6 -= self::mul($s15, 997805, 20);
- $s7 += self::mul($s15, 136657, 18);
- $s8 -= self::mul($s15, 683901, 20);
-
- $s2 += self::mul($s14, 666643, 20);
- $s3 += self::mul($s14, 470296, 19);
- $s4 += self::mul($s14, 654183, 20);
- $s5 -= self::mul($s14, 997805, 20);
- $s6 += self::mul($s14, 136657, 18);
- $s7 -= self::mul($s14, 683901, 20);
-
- $s1 += self::mul($s13, 666643, 20);
- $s2 += self::mul($s13, 470296, 19);
- $s3 += self::mul($s13, 654183, 20);
- $s4 -= self::mul($s13, 997805, 20);
- $s5 += self::mul($s13, 136657, 18);
- $s6 -= self::mul($s13, 683901, 20);
-
- $s0 += self::mul($s12, 666643, 20);
- $s1 += self::mul($s12, 470296, 19);
- $s2 += self::mul($s12, 654183, 20);
- $s3 -= self::mul($s12, 997805, 20);
- $s4 += self::mul($s12, 136657, 18);
- $s5 -= self::mul($s12, 683901, 20);
- $s12 = 0;
-
- /** @var int $carry0 */
- $carry0 = ($s0 + (1 << 20)) >> 21;
- $s1 += $carry0;
- $s0 -= $carry0 << 21;
- /** @var int $carry2 */
- $carry2 = ($s2 + (1 << 20)) >> 21;
- $s3 += $carry2;
- $s2 -= $carry2 << 21;
- /** @var int $carry4 */
- $carry4 = ($s4 + (1 << 20)) >> 21;
- $s5 += $carry4;
- $s4 -= $carry4 << 21;
- /** @var int $carry6 */
- $carry6 = ($s6 + (1 << 20)) >> 21;
- $s7 += $carry6;
- $s6 -= $carry6 << 21;
- /** @var int $carry8 */
- $carry8 = ($s8 + (1 << 20)) >> 21;
- $s9 += $carry8;
- $s8 -= $carry8 << 21;
- /** @var int $carry10 */
- $carry10 = ($s10 + (1 << 20)) >> 21;
- $s11 += $carry10;
- $s10 -= $carry10 << 21;
-
- /** @var int $carry1 */
- $carry1 = ($s1 + (1 << 20)) >> 21;
- $s2 += $carry1;
- $s1 -= $carry1 << 21;
- /** @var int $carry3 */
- $carry3 = ($s3 + (1 << 20)) >> 21;
- $s4 += $carry3;
- $s3 -= $carry3 << 21;
- /** @var int $carry5 */
- $carry5 = ($s5 + (1 << 20)) >> 21;
- $s6 += $carry5;
- $s5 -= $carry5 << 21;
- /** @var int $carry7 */
- $carry7 = ($s7 + (1 << 20)) >> 21;
- $s8 += $carry7;
- $s7 -= $carry7 << 21;
- /** @var int $carry9 */
- $carry9 = ($s9 + (1 << 20)) >> 21;
- $s10 += $carry9;
- $s9 -= $carry9 << 21;
- /** @var int $carry11 */
- $carry11 = ($s11 + (1 << 20)) >> 21;
- $s12 += $carry11;
- $s11 -= $carry11 << 21;
-
- $s0 += self::mul($s12, 666643, 20);
- $s1 += self::mul($s12, 470296, 19);
- $s2 += self::mul($s12, 654183, 20);
- $s3 -= self::mul($s12, 997805, 20);
- $s4 += self::mul($s12, 136657, 18);
- $s5 -= self::mul($s12, 683901, 20);
- $s12 = 0;
-
- /** @var int $carry0 */
- $carry0 = $s0 >> 21;
- $s1 += $carry0;
- $s0 -= $carry0 << 21;
- /** @var int $carry1 */
- $carry1 = $s1 >> 21;
- $s2 += $carry1;
- $s1 -= $carry1 << 21;
- /** @var int $carry2 */
- $carry2 = $s2 >> 21;
- $s3 += $carry2;
- $s2 -= $carry2 << 21;
- /** @var int $carry3 */
- $carry3 = $s3 >> 21;
- $s4 += $carry3;
- $s3 -= $carry3 << 21;
- /** @var int $carry4 */
- $carry4 = $s4 >> 21;
- $s5 += $carry4;
- $s4 -= $carry4 << 21;
- /** @var int $carry5 */
- $carry5 = $s5 >> 21;
- $s6 += $carry5;
- $s5 -= $carry5 << 21;
- /** @var int $carry6 */
- $carry6 = $s6 >> 21;
- $s7 += $carry6;
- $s6 -= $carry6 << 21;
- /** @var int $carry7 */
- $carry7 = $s7 >> 21;
- $s8 += $carry7;
- $s7 -= $carry7 << 21;
- /** @var int $carry8 */
- $carry8 = $s8 >> 21;
- $s9 += $carry8;
- $s8 -= $carry8 << 21;
- /** @var int $carry9 */
- $carry9 = $s9 >> 21;
- $s10 += $carry9;
- $s9 -= $carry9 << 21;
- /** @var int $carry10 */
- $carry10 = $s10 >> 21;
- $s11 += $carry10;
- $s10 -= $carry10 << 21;
- /** @var int $carry11 */
- $carry11 = $s11 >> 21;
- $s12 += $carry11;
- $s11 -= $carry11 << 21;
-
- $s0 += self::mul($s12, 666643, 20);
- $s1 += self::mul($s12, 470296, 19);
- $s2 += self::mul($s12, 654183, 20);
- $s3 -= self::mul($s12, 997805, 20);
- $s4 += self::mul($s12, 136657, 18);
- $s5 -= self::mul($s12, 683901, 20);
-
- /** @var int $carry0 */
- $carry0 = $s0 >> 21;
- $s1 += $carry0;
- $s0 -= $carry0 << 21;
- /** @var int $carry1 */
- $carry1 = $s1 >> 21;
- $s2 += $carry1;
- $s1 -= $carry1 << 21;
- /** @var int $carry2 */
- $carry2 = $s2 >> 21;
- $s3 += $carry2;
- $s2 -= $carry2 << 21;
- /** @var int $carry3 */
- $carry3 = $s3 >> 21;
- $s4 += $carry3;
- $s3 -= $carry3 << 21;
- /** @var int $carry4 */
- $carry4 = $s4 >> 21;
- $s5 += $carry4;
- $s4 -= $carry4 << 21;
- /** @var int $carry5 */
- $carry5 = $s5 >> 21;
- $s6 += $carry5;
- $s5 -= $carry5 << 21;
- /** @var int $carry6 */
- $carry6 = $s6 >> 21;
- $s7 += $carry6;
- $s6 -= $carry6 << 21;
- /** @var int $carry7 */
- $carry7 = $s7 >> 21;
- $s8 += $carry7;
- $s7 -= $carry7 << 21;
- /** @var int $carry8 */
- $carry8 = $s8 >> 21;
- $s9 += $carry8;
- $s8 -= $carry8 << 21;
- /** @var int $carry9 */
- $carry9 = $s9 >> 21;
- $s10 += $carry9;
- $s9 -= $carry9 << 21;
- /** @var int $carry10 */
- $carry10 = $s10 >> 21;
- $s11 += $carry10;
- $s10 -= $carry10 << 21;
-
- /**
- * @var array<int, int>
- */
- $arr = array(
- (int) ($s0 >> 0),
- (int) ($s0 >> 8),
- (int) (($s0 >> 16) | $s1 << 5),
- (int) ($s1 >> 3),
- (int) ($s1 >> 11),
- (int) (($s1 >> 19) | $s2 << 2),
- (int) ($s2 >> 6),
- (int) (($s2 >> 14) | $s3 << 7),
- (int) ($s3 >> 1),
- (int) ($s3 >> 9),
- (int) (($s3 >> 17) | $s4 << 4),
- (int) ($s4 >> 4),
- (int) ($s4 >> 12),
- (int) (($s4 >> 20) | $s5 << 1),
- (int) ($s5 >> 7),
- (int) (($s5 >> 15) | $s6 << 6),
- (int) ($s6 >> 2),
- (int) ($s6 >> 10),
- (int) (($s6 >> 18) | $s7 << 3),
- (int) ($s7 >> 5),
- (int) ($s7 >> 13),
- (int) ($s8 >> 0),
- (int) ($s8 >> 8),
- (int) (($s8 >> 16) | $s9 << 5),
- (int) ($s9 >> 3),
- (int) ($s9 >> 11),
- (int) (($s9 >> 19) | $s10 << 2),
- (int) ($s10 >> 6),
- (int) (($s10 >> 14) | $s11 << 7),
- (int) ($s11 >> 1),
- (int) ($s11 >> 9),
- (int) $s11 >> 17
- );
- return self::intArrayToString($arr);
- }
-
- /**
- * multiply by the order of the main subgroup l = 2^252+27742317777372353535851937790883648493
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $A
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P3
- */
- public static function ge_mul_l(ParagonIE_Sodium_Core_Curve25519_Ge_P3 $A)
- {
- /** @var array<int, int> $aslide */
- $aslide = array(
- 13, 0, 0, 0, 0, -1, 0, 0, 0, 0, -11, 0, 0, 0, 0, 0, 0, -5, 0, 0, 0,
- 0, 0, 0, -3, 0, 0, 0, 0, -13, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 3, 0,
- 0, 0, 0, -13, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0, 11, 0, 0, 0,
- 0, 0, 11, 0, 0, 0, 0, -13, 0, 0, 0, 0, 0, 0, -3, 0, 0, 0, 0, 0, -1,
- 0, 0, 0, 0, 3, 0, 0, 0, 0, -11, 0, 0, 0, 0, 0, 0, 0, 15, 0, 0, 0,
- 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 7, 0, 0, 0, 0, 5, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1
- );
-
- /** @var array<int, ParagonIE_Sodium_Core_Curve25519_Ge_Cached> $Ai size 8 */
- $Ai = array();
-
- # ge_p3_to_cached(&Ai[0], A);
- $Ai[0] = self::ge_p3_to_cached($A);
- # ge_p3_dbl(&t, A);
- $t = self::ge_p3_dbl($A);
- # ge_p1p1_to_p3(&A2, &t);
- $A2 = self::ge_p1p1_to_p3($t);
-
- for ($i = 1; $i < 8; ++$i) {
- # ge_add(&t, &A2, &Ai[0]);
- $t = self::ge_add($A2, $Ai[$i - 1]);
- # ge_p1p1_to_p3(&u, &t);
- $u = self::ge_p1p1_to_p3($t);
- # ge_p3_to_cached(&Ai[i], &u);
- $Ai[$i] = self::ge_p3_to_cached($u);
- }
-
- $r = self::ge_p3_0();
- for ($i = 252; $i >= 0; --$i) {
- $t = self::ge_p3_dbl($r);
- if ($aslide[$i] > 0) {
- # ge_p1p1_to_p3(&u, &t);
- $u = self::ge_p1p1_to_p3($t);
- # ge_add(&t, &u, &Ai[aslide[i] / 2]);
- $t = self::ge_add($u, $Ai[(int)($aslide[$i] / 2)]);
- } elseif ($aslide[$i] < 0) {
- # ge_p1p1_to_p3(&u, &t);
- $u = self::ge_p1p1_to_p3($t);
- # ge_sub(&t, &u, &Ai[(-aslide[i]) / 2]);
- $t = self::ge_sub($u, $Ai[(int)(-$aslide[$i] / 2)]);
- }
- }
-
- # ge_p1p1_to_p3(r, &t);
- return self::ge_p1p1_to_p3($t);
- }
-
- /**
- * @param string $a
- * @param string $b
- * @return string
- */
- public static function sc25519_mul($a, $b)
- {
- // int64_t a0 = 2097151 & load_3(a);
- // int64_t a1 = 2097151 & (load_4(a + 2) >> 5);
- // int64_t a2 = 2097151 & (load_3(a + 5) >> 2);
- // int64_t a3 = 2097151 & (load_4(a + 7) >> 7);
- // int64_t a4 = 2097151 & (load_4(a + 10) >> 4);
- // int64_t a5 = 2097151 & (load_3(a + 13) >> 1);
- // int64_t a6 = 2097151 & (load_4(a + 15) >> 6);
- // int64_t a7 = 2097151 & (load_3(a + 18) >> 3);
- // int64_t a8 = 2097151 & load_3(a + 21);
- // int64_t a9 = 2097151 & (load_4(a + 23) >> 5);
- // int64_t a10 = 2097151 & (load_3(a + 26) >> 2);
- // int64_t a11 = (load_4(a + 28) >> 7);
- $a0 = 2097151 & self::load_3(self::substr($a, 0, 3));
- $a1 = 2097151 & (self::load_4(self::substr($a, 2, 4)) >> 5);
- $a2 = 2097151 & (self::load_3(self::substr($a, 5, 3)) >> 2);
- $a3 = 2097151 & (self::load_4(self::substr($a, 7, 4)) >> 7);
- $a4 = 2097151 & (self::load_4(self::substr($a, 10, 4)) >> 4);
- $a5 = 2097151 & (self::load_3(self::substr($a, 13, 3)) >> 1);
- $a6 = 2097151 & (self::load_4(self::substr($a, 15, 4)) >> 6);
- $a7 = 2097151 & (self::load_3(self::substr($a, 18, 3)) >> 3);
- $a8 = 2097151 & self::load_3(self::substr($a, 21, 3));
- $a9 = 2097151 & (self::load_4(self::substr($a, 23, 4)) >> 5);
- $a10 = 2097151 & (self::load_3(self::substr($a, 26, 3)) >> 2);
- $a11 = (self::load_4(self::substr($a, 28, 4)) >> 7);
-
- // int64_t b0 = 2097151 & load_3(b);
- // int64_t b1 = 2097151 & (load_4(b + 2) >> 5);
- // int64_t b2 = 2097151 & (load_3(b + 5) >> 2);
- // int64_t b3 = 2097151 & (load_4(b + 7) >> 7);
- // int64_t b4 = 2097151 & (load_4(b + 10) >> 4);
- // int64_t b5 = 2097151 & (load_3(b + 13) >> 1);
- // int64_t b6 = 2097151 & (load_4(b + 15) >> 6);
- // int64_t b7 = 2097151 & (load_3(b + 18) >> 3);
- // int64_t b8 = 2097151 & load_3(b + 21);
- // int64_t b9 = 2097151 & (load_4(b + 23) >> 5);
- // int64_t b10 = 2097151 & (load_3(b + 26) >> 2);
- // int64_t b11 = (load_4(b + 28) >> 7);
- $b0 = 2097151 & self::load_3(self::substr($b, 0, 3));
- $b1 = 2097151 & (self::load_4(self::substr($b, 2, 4)) >> 5);
- $b2 = 2097151 & (self::load_3(self::substr($b, 5, 3)) >> 2);
- $b3 = 2097151 & (self::load_4(self::substr($b, 7, 4)) >> 7);
- $b4 = 2097151 & (self::load_4(self::substr($b, 10, 4)) >> 4);
- $b5 = 2097151 & (self::load_3(self::substr($b, 13, 3)) >> 1);
- $b6 = 2097151 & (self::load_4(self::substr($b, 15, 4)) >> 6);
- $b7 = 2097151 & (self::load_3(self::substr($b, 18, 3)) >> 3);
- $b8 = 2097151 & self::load_3(self::substr($b, 21, 3));
- $b9 = 2097151 & (self::load_4(self::substr($b, 23, 4)) >> 5);
- $b10 = 2097151 & (self::load_3(self::substr($b, 26, 3)) >> 2);
- $b11 = (self::load_4(self::substr($b, 28, 4)) >> 7);
-
- // s0 = a0 * b0;
- // s1 = a0 * b1 + a1 * b0;
- // s2 = a0 * b2 + a1 * b1 + a2 * b0;
- // s3 = a0 * b3 + a1 * b2 + a2 * b1 + a3 * b0;
- // s4 = a0 * b4 + a1 * b3 + a2 * b2 + a3 * b1 + a4 * b0;
- // s5 = a0 * b5 + a1 * b4 + a2 * b3 + a3 * b2 + a4 * b1 + a5 * b0;
- // s6 = a0 * b6 + a1 * b5 + a2 * b4 + a3 * b3 + a4 * b2 + a5 * b1 + a6 * b0;
- // s7 = a0 * b7 + a1 * b6 + a2 * b5 + a3 * b4 + a4 * b3 + a5 * b2 +
- // a6 * b1 + a7 * b0;
- // s8 = a0 * b8 + a1 * b7 + a2 * b6 + a3 * b5 + a4 * b4 + a5 * b3 +
- // a6 * b2 + a7 * b1 + a8 * b0;
- // s9 = a0 * b9 + a1 * b8 + a2 * b7 + a3 * b6 + a4 * b5 + a5 * b4 +
- // a6 * b3 + a7 * b2 + a8 * b1 + a9 * b0;
- // s10 = a0 * b10 + a1 * b9 + a2 * b8 + a3 * b7 + a4 * b6 + a5 * b5 +
- // a6 * b4 + a7 * b3 + a8 * b2 + a9 * b1 + a10 * b0;
- // s11 = a0 * b11 + a1 * b10 + a2 * b9 + a3 * b8 + a4 * b7 + a5 * b6 +
- // a6 * b5 + a7 * b4 + a8 * b3 + a9 * b2 + a10 * b1 + a11 * b0;
- // s12 = a1 * b11 + a2 * b10 + a3 * b9 + a4 * b8 + a5 * b7 + a6 * b6 +
- // a7 * b5 + a8 * b4 + a9 * b3 + a10 * b2 + a11 * b1;
- // s13 = a2 * b11 + a3 * b10 + a4 * b9 + a5 * b8 + a6 * b7 + a7 * b6 +
- // a8 * b5 + a9 * b4 + a10 * b3 + a11 * b2;
- // s14 = a3 * b11 + a4 * b10 + a5 * b9 + a6 * b8 + a7 * b7 + a8 * b6 +
- // a9 * b5 + a10 * b4 + a11 * b3;
- // s15 = a4 * b11 + a5 * b10 + a6 * b9 + a7 * b8 + a8 * b7 + a9 * b6 +
- // a10 * b5 + a11 * b4;
- // s16 =
- // a5 * b11 + a6 * b10 + a7 * b9 + a8 * b8 + a9 * b7 + a10 * b6 + a11 * b5;
- // s17 = a6 * b11 + a7 * b10 + a8 * b9 + a9 * b8 + a10 * b7 + a11 * b6;
- // s18 = a7 * b11 + a8 * b10 + a9 * b9 + a10 * b8 + a11 * b7;
- // s19 = a8 * b11 + a9 * b10 + a10 * b9 + a11 * b8;
- // s20 = a9 * b11 + a10 * b10 + a11 * b9;
- // s21 = a10 * b11 + a11 * b10;
- // s22 = a11 * b11;
- // s23 = 0;
- $s0 = self::mul($a0, $b0, 22);
- $s1 = self::mul($a0, $b1, 22) + self::mul($a1, $b0, 22);
- $s2 = self::mul($a0, $b2, 22) + self::mul($a1, $b1, 22) + self::mul($a2, $b0, 22);
- $s3 = self::mul($a0, $b3, 22) + self::mul($a1, $b2, 22) + self::mul($a2, $b1, 22) + self::mul($a3, $b0, 22);
- $s4 = self::mul($a0, $b4, 22) + self::mul($a1, $b3, 22) + self::mul($a2, $b2, 22) + self::mul($a3, $b1, 22) +
- self::mul($a4, $b0, 22);
- $s5 = self::mul($a0, $b5, 22) + self::mul($a1, $b4, 22) + self::mul($a2, $b3, 22) + self::mul($a3, $b2, 22) +
- self::mul($a4, $b1, 22) + self::mul($a5, $b0, 22);
- $s6 = self::mul($a0, $b6, 22) + self::mul($a1, $b5, 22) + self::mul($a2, $b4, 22) + self::mul($a3, $b3, 22) +
- self::mul($a4, $b2, 22) + self::mul($a5, $b1, 22) + self::mul($a6, $b0, 22);
- $s7 = self::mul($a0, $b7, 22) + self::mul($a1, $b6, 22) + self::mul($a2, $b5, 22) + self::mul($a3, $b4, 22) +
- self::mul($a4, $b3, 22) + self::mul($a5, $b2, 22) + self::mul($a6, $b1, 22) + self::mul($a7, $b0, 22);
- $s8 = self::mul($a0, $b8, 22) + self::mul($a1, $b7, 22) + self::mul($a2, $b6, 22) + self::mul($a3, $b5, 22) +
- self::mul($a4, $b4, 22) + self::mul($a5, $b3, 22) + self::mul($a6, $b2, 22) + self::mul($a7, $b1, 22) +
- self::mul($a8, $b0, 22);
- $s9 = self::mul($a0, $b9, 22) + self::mul($a1, $b8, 22) + self::mul($a2, $b7, 22) + self::mul($a3, $b6, 22) +
- self::mul($a4, $b5, 22) + self::mul($a5, $b4, 22) + self::mul($a6, $b3, 22) + self::mul($a7, $b2, 22) +
- self::mul($a8, $b1, 22) + self::mul($a9, $b0, 22);
- $s10 = self::mul($a0, $b10, 22) + self::mul($a1, $b9, 22) + self::mul($a2, $b8, 22) + self::mul($a3, $b7, 22) +
- self::mul($a4, $b6, 22) + self::mul($a5, $b5, 22) + self::mul($a6, $b4, 22) + self::mul($a7, $b3, 22) +
- self::mul($a8, $b2, 22) + self::mul($a9, $b1, 22) + self::mul($a10, $b0, 22);
- $s11 = self::mul($a0, $b11, 22) + self::mul($a1, $b10, 22) + self::mul($a2, $b9, 22) + self::mul($a3, $b8, 22) +
- self::mul($a4, $b7, 22) + self::mul($a5, $b6, 22) + self::mul($a6, $b5, 22) + self::mul($a7, $b4, 22) +
- self::mul($a8, $b3, 22) + self::mul($a9, $b2, 22) + self::mul($a10, $b1, 22) + self::mul($a11, $b0, 22);
- $s12 = self::mul($a1, $b11, 22) + self::mul($a2, $b10, 22) + self::mul($a3, $b9, 22) + self::mul($a4, $b8, 22) +
- self::mul($a5, $b7, 22) + self::mul($a6, $b6, 22) + self::mul($a7, $b5, 22) + self::mul($a8, $b4, 22) +
- self::mul($a9, $b3, 22) + self::mul($a10, $b2, 22) + self::mul($a11, $b1, 22);
- $s13 = self::mul($a2, $b11, 22) + self::mul($a3, $b10, 22) + self::mul($a4, $b9, 22) + self::mul($a5, $b8, 22) +
- self::mul($a6, $b7, 22) + self::mul($a7, $b6, 22) + self::mul($a8, $b5, 22) + self::mul($a9, $b4, 22) +
- self::mul($a10, $b3, 22) + self::mul($a11, $b2, 22);
- $s14 = self::mul($a3, $b11, 22) + self::mul($a4, $b10, 22) + self::mul($a5, $b9, 22) + self::mul($a6, $b8, 22) +
- self::mul($a7, $b7, 22) + self::mul($a8, $b6, 22) + self::mul($a9, $b5, 22) + self::mul($a10, $b4, 22) +
- self::mul($a11, $b3, 22);
- $s15 = self::mul($a4, $b11, 22) + self::mul($a5, $b10, 22) + self::mul($a6, $b9, 22) + self::mul($a7, $b8, 22) +
- self::mul($a8, $b7, 22) + self::mul($a9, $b6, 22) + self::mul($a10, $b5, 22) + self::mul($a11, $b4, 22);
- $s16 =
- self::mul($a5, $b11, 22) + self::mul($a6, $b10, 22) + self::mul($a7, $b9, 22) + self::mul($a8, $b8, 22) +
- self::mul($a9, $b7, 22) + self::mul($a10, $b6, 22) + self::mul($a11, $b5, 22);
- $s17 = self::mul($a6, $b11, 22) + self::mul($a7, $b10, 22) + self::mul($a8, $b9, 22) + self::mul($a9, $b8, 22) +
- self::mul($a10, $b7, 22) + self::mul($a11, $b6, 22);
- $s18 = self::mul($a7, $b11, 22) + self::mul($a8, $b10, 22) + self::mul($a9, $b9, 22) + self::mul($a10, $b8, 22)
- + self::mul($a11, $b7, 22);
- $s19 = self::mul($a8, $b11, 22) + self::mul($a9, $b10, 22) + self::mul($a10, $b9, 22) +
- self::mul($a11, $b8, 22);
- $s20 = self::mul($a9, $b11, 22) + self::mul($a10, $b10, 22) + self::mul($a11, $b9, 22);
- $s21 = self::mul($a10, $b11, 22) + self::mul($a11, $b10, 22);
- $s22 = self::mul($a11, $b11, 22);
- $s23 = 0;
-
- // carry0 = (s0 + (int64_t) (1L << 20)) >> 21;
- // s1 += carry0;
- // s0 -= carry0 * ((uint64_t) 1L << 21);
- $carry0 = ($s0 + (1 << 20)) >> 21;
- $s1 += $carry0;
- $s0 -= $carry0 << 21;
- // carry2 = (s2 + (int64_t) (1L << 20)) >> 21;
- // s3 += carry2;
- // s2 -= carry2 * ((uint64_t) 1L << 21);
- $carry2 = ($s2 + (1 << 20)) >> 21;
- $s3 += $carry2;
- $s2 -= $carry2 << 21;
- // carry4 = (s4 + (int64_t) (1L << 20)) >> 21;
- // s5 += carry4;
- // s4 -= carry4 * ((uint64_t) 1L << 21);
- $carry4 = ($s4 + (1 << 20)) >> 21;
- $s5 += $carry4;
- $s4 -= $carry4 << 21;
- // carry6 = (s6 + (int64_t) (1L << 20)) >> 21;
- // s7 += carry6;
- // s6 -= carry6 * ((uint64_t) 1L << 21);
- $carry6 = ($s6 + (1 << 20)) >> 21;
- $s7 += $carry6;
- $s6 -= $carry6 << 21;
- // carry8 = (s8 + (int64_t) (1L << 20)) >> 21;
- // s9 += carry8;
- // s8 -= carry8 * ((uint64_t) 1L << 21);
- $carry8 = ($s8 + (1 << 20)) >> 21;
- $s9 += $carry8;
- $s8 -= $carry8 << 21;
- // carry10 = (s10 + (int64_t) (1L << 20)) >> 21;
- // s11 += carry10;
- // s10 -= carry10 * ((uint64_t) 1L << 21);
- $carry10 = ($s10 + (1 << 20)) >> 21;
- $s11 += $carry10;
- $s10 -= $carry10 << 21;
- // carry12 = (s12 + (int64_t) (1L << 20)) >> 21;
- // s13 += carry12;
- // s12 -= carry12 * ((uint64_t) 1L << 21);
- $carry12 = ($s12 + (1 << 20)) >> 21;
- $s13 += $carry12;
- $s12 -= $carry12 << 21;
- // carry14 = (s14 + (int64_t) (1L << 20)) >> 21;
- // s15 += carry14;
- // s14 -= carry14 * ((uint64_t) 1L << 21);
- $carry14 = ($s14 + (1 << 20)) >> 21;
- $s15 += $carry14;
- $s14 -= $carry14 << 21;
- // carry16 = (s16 + (int64_t) (1L << 20)) >> 21;
- // s17 += carry16;
- // s16 -= carry16 * ((uint64_t) 1L << 21);
- $carry16 = ($s16 + (1 << 20)) >> 21;
- $s17 += $carry16;
- $s16 -= $carry16 << 21;
- // carry18 = (s18 + (int64_t) (1L << 20)) >> 21;
- // s19 += carry18;
- // s18 -= carry18 * ((uint64_t) 1L << 21);
- $carry18 = ($s18 + (1 << 20)) >> 21;
- $s19 += $carry18;
- $s18 -= $carry18 << 21;
- // carry20 = (s20 + (int64_t) (1L << 20)) >> 21;
- // s21 += carry20;
- // s20 -= carry20 * ((uint64_t) 1L << 21);
- $carry20 = ($s20 + (1 << 20)) >> 21;
- $s21 += $carry20;
- $s20 -= $carry20 << 21;
- // carry22 = (s22 + (int64_t) (1L << 20)) >> 21;
- // s23 += carry22;
- // s22 -= carry22 * ((uint64_t) 1L << 21);
- $carry22 = ($s22 + (1 << 20)) >> 21;
- $s23 += $carry22;
- $s22 -= $carry22 << 21;
-
- // carry1 = (s1 + (int64_t) (1L << 20)) >> 21;
- // s2 += carry1;
- // s1 -= carry1 * ((uint64_t) 1L << 21);
- $carry1 = ($s1 + (1 << 20)) >> 21;
- $s2 += $carry1;
- $s1 -= $carry1 << 21;
- // carry3 = (s3 + (int64_t) (1L << 20)) >> 21;
- // s4 += carry3;
- // s3 -= carry3 * ((uint64_t) 1L << 21);
- $carry3 = ($s3 + (1 << 20)) >> 21;
- $s4 += $carry3;
- $s3 -= $carry3 << 21;
- // carry5 = (s5 + (int64_t) (1L << 20)) >> 21;
- // s6 += carry5;
- // s5 -= carry5 * ((uint64_t) 1L << 21);
- $carry5 = ($s5 + (1 << 20)) >> 21;
- $s6 += $carry5;
- $s5 -= $carry5 << 21;
- // carry7 = (s7 + (int64_t) (1L << 20)) >> 21;
- // s8 += carry7;
- // s7 -= carry7 * ((uint64_t) 1L << 21);
- $carry7 = ($s7 + (1 << 20)) >> 21;
- $s8 += $carry7;
- $s7 -= $carry7 << 21;
- // carry9 = (s9 + (int64_t) (1L << 20)) >> 21;
- // s10 += carry9;
- // s9 -= carry9 * ((uint64_t) 1L << 21);
- $carry9 = ($s9 + (1 << 20)) >> 21;
- $s10 += $carry9;
- $s9 -= $carry9 << 21;
- // carry11 = (s11 + (int64_t) (1L << 20)) >> 21;
- // s12 += carry11;
- // s11 -= carry11 * ((uint64_t) 1L << 21);
- $carry11 = ($s11 + (1 << 20)) >> 21;
- $s12 += $carry11;
- $s11 -= $carry11 << 21;
- // carry13 = (s13 + (int64_t) (1L << 20)) >> 21;
- // s14 += carry13;
- // s13 -= carry13 * ((uint64_t) 1L << 21);
- $carry13 = ($s13 + (1 << 20)) >> 21;
- $s14 += $carry13;
- $s13 -= $carry13 << 21;
- // carry15 = (s15 + (int64_t) (1L << 20)) >> 21;
- // s16 += carry15;
- // s15 -= carry15 * ((uint64_t) 1L << 21);
- $carry15 = ($s15 + (1 << 20)) >> 21;
- $s16 += $carry15;
- $s15 -= $carry15 << 21;
- // carry17 = (s17 + (int64_t) (1L << 20)) >> 21;
- // s18 += carry17;
- // s17 -= carry17 * ((uint64_t) 1L << 21);
- $carry17 = ($s17 + (1 << 20)) >> 21;
- $s18 += $carry17;
- $s17 -= $carry17 << 21;
- // carry19 = (s19 + (int64_t) (1L << 20)) >> 21;
- // s20 += carry19;
- // s19 -= carry19 * ((uint64_t) 1L << 21);
- $carry19 = ($s19 + (1 << 20)) >> 21;
- $s20 += $carry19;
- $s19 -= $carry19 << 21;
- // carry21 = (s21 + (int64_t) (1L << 20)) >> 21;
- // s22 += carry21;
- // s21 -= carry21 * ((uint64_t) 1L << 21);
- $carry21 = ($s21 + (1 << 20)) >> 21;
- $s22 += $carry21;
- $s21 -= $carry21 << 21;
-
- // s11 += s23 * 666643;
- // s12 += s23 * 470296;
- // s13 += s23 * 654183;
- // s14 -= s23 * 997805;
- // s15 += s23 * 136657;
- // s16 -= s23 * 683901;
- $s11 += self::mul($s23, 666643, 20);
- $s12 += self::mul($s23, 470296, 19);
- $s13 += self::mul($s23, 654183, 20);
- $s14 -= self::mul($s23, 997805, 20);
- $s15 += self::mul($s23, 136657, 18);
- $s16 -= self::mul($s23, 683901, 20);
-
- // s10 += s22 * 666643;
- // s11 += s22 * 470296;
- // s12 += s22 * 654183;
- // s13 -= s22 * 997805;
- // s14 += s22 * 136657;
- // s15 -= s22 * 683901;
- $s10 += self::mul($s22, 666643, 20);
- $s11 += self::mul($s22, 470296, 19);
- $s12 += self::mul($s22, 654183, 20);
- $s13 -= self::mul($s22, 997805, 20);
- $s14 += self::mul($s22, 136657, 18);
- $s15 -= self::mul($s22, 683901, 20);
-
- // s9 += s21 * 666643;
- // s10 += s21 * 470296;
- // s11 += s21 * 654183;
- // s12 -= s21 * 997805;
- // s13 += s21 * 136657;
- // s14 -= s21 * 683901;
- $s9 += self::mul($s21, 666643, 20);
- $s10 += self::mul($s21, 470296, 19);
- $s11 += self::mul($s21, 654183, 20);
- $s12 -= self::mul($s21, 997805, 20);
- $s13 += self::mul($s21, 136657, 18);
- $s14 -= self::mul($s21, 683901, 20);
-
- // s8 += s20 * 666643;
- // s9 += s20 * 470296;
- // s10 += s20 * 654183;
- // s11 -= s20 * 997805;
- // s12 += s20 * 136657;
- // s13 -= s20 * 683901;
- $s8 += self::mul($s20, 666643, 20);
- $s9 += self::mul($s20, 470296, 19);
- $s10 += self::mul($s20, 654183, 20);
- $s11 -= self::mul($s20, 997805, 20);
- $s12 += self::mul($s20, 136657, 18);
- $s13 -= self::mul($s20, 683901, 20);
-
- // s7 += s19 * 666643;
- // s8 += s19 * 470296;
- // s9 += s19 * 654183;
- // s10 -= s19 * 997805;
- // s11 += s19 * 136657;
- // s12 -= s19 * 683901;
- $s7 += self::mul($s19, 666643, 20);
- $s8 += self::mul($s19, 470296, 19);
- $s9 += self::mul($s19, 654183, 20);
- $s10 -= self::mul($s19, 997805, 20);
- $s11 += self::mul($s19, 136657, 18);
- $s12 -= self::mul($s19, 683901, 20);
-
- // s6 += s18 * 666643;
- // s7 += s18 * 470296;
- // s8 += s18 * 654183;
- // s9 -= s18 * 997805;
- // s10 += s18 * 136657;
- // s11 -= s18 * 683901;
- $s6 += self::mul($s18, 666643, 20);
- $s7 += self::mul($s18, 470296, 19);
- $s8 += self::mul($s18, 654183, 20);
- $s9 -= self::mul($s18, 997805, 20);
- $s10 += self::mul($s18, 136657, 18);
- $s11 -= self::mul($s18, 683901, 20);
-
- // carry6 = (s6 + (int64_t) (1L << 20)) >> 21;
- // s7 += carry6;
- // s6 -= carry6 * ((uint64_t) 1L << 21);
- $carry6 = ($s6 + (1 << 20)) >> 21;
- $s7 += $carry6;
- $s6 -= $carry6 << 21;
- // carry8 = (s8 + (int64_t) (1L << 20)) >> 21;
- // s9 += carry8;
- // s8 -= carry8 * ((uint64_t) 1L << 21);
- $carry8 = ($s8 + (1 << 20)) >> 21;
- $s9 += $carry8;
- $s8 -= $carry8 << 21;
- // carry10 = (s10 + (int64_t) (1L << 20)) >> 21;
- // s11 += carry10;
- // s10 -= carry10 * ((uint64_t) 1L << 21);
- $carry10 = ($s10 + (1 << 20)) >> 21;
- $s11 += $carry10;
- $s10 -= $carry10 << 21;
- // carry12 = (s12 + (int64_t) (1L << 20)) >> 21;
- // s13 += carry12;
- // s12 -= carry12 * ((uint64_t) 1L << 21);
- $carry12 = ($s12 + (1 << 20)) >> 21;
- $s13 += $carry12;
- $s12 -= $carry12 << 21;
- // carry14 = (s14 + (int64_t) (1L << 20)) >> 21;
- // s15 += carry14;
- // s14 -= carry14 * ((uint64_t) 1L << 21);
- $carry14 = ($s14 + (1 << 20)) >> 21;
- $s15 += $carry14;
- $s14 -= $carry14 << 21;
- // carry16 = (s16 + (int64_t) (1L << 20)) >> 21;
- // s17 += carry16;
- // s16 -= carry16 * ((uint64_t) 1L << 21);
- $carry16 = ($s16 + (1 << 20)) >> 21;
- $s17 += $carry16;
- $s16 -= $carry16 << 21;
-
- // carry7 = (s7 + (int64_t) (1L << 20)) >> 21;
- // s8 += carry7;
- // s7 -= carry7 * ((uint64_t) 1L << 21);
- $carry7 = ($s7 + (1 << 20)) >> 21;
- $s8 += $carry7;
- $s7 -= $carry7 << 21;
- // carry9 = (s9 + (int64_t) (1L << 20)) >> 21;
- // s10 += carry9;
- // s9 -= carry9 * ((uint64_t) 1L << 21);
- $carry9 = ($s9 + (1 << 20)) >> 21;
- $s10 += $carry9;
- $s9 -= $carry9 << 21;
- // carry11 = (s11 + (int64_t) (1L << 20)) >> 21;
- // s12 += carry11;
- // s11 -= carry11 * ((uint64_t) 1L << 21);
- $carry11 = ($s11 + (1 << 20)) >> 21;
- $s12 += $carry11;
- $s11 -= $carry11 << 21;
- // carry13 = (s13 + (int64_t) (1L << 20)) >> 21;
- // s14 += carry13;
- // s13 -= carry13 * ((uint64_t) 1L << 21);
- $carry13 = ($s13 + (1 << 20)) >> 21;
- $s14 += $carry13;
- $s13 -= $carry13 << 21;
- // carry15 = (s15 + (int64_t) (1L << 20)) >> 21;
- // s16 += carry15;
- // s15 -= carry15 * ((uint64_t) 1L << 21);
- $carry15 = ($s15 + (1 << 20)) >> 21;
- $s16 += $carry15;
- $s15 -= $carry15 << 21;
-
- // s5 += s17 * 666643;
- // s6 += s17 * 470296;
- // s7 += s17 * 654183;
- // s8 -= s17 * 997805;
- // s9 += s17 * 136657;
- // s10 -= s17 * 683901;
- $s5 += self::mul($s17, 666643, 20);
- $s6 += self::mul($s17, 470296, 19);
- $s7 += self::mul($s17, 654183, 20);
- $s8 -= self::mul($s17, 997805, 20);
- $s9 += self::mul($s17, 136657, 18);
- $s10 -= self::mul($s17, 683901, 20);
-
- // s4 += s16 * 666643;
- // s5 += s16 * 470296;
- // s6 += s16 * 654183;
- // s7 -= s16 * 997805;
- // s8 += s16 * 136657;
- // s9 -= s16 * 683901;
- $s4 += self::mul($s16, 666643, 20);
- $s5 += self::mul($s16, 470296, 19);
- $s6 += self::mul($s16, 654183, 20);
- $s7 -= self::mul($s16, 997805, 20);
- $s8 += self::mul($s16, 136657, 18);
- $s9 -= self::mul($s16, 683901, 20);
-
- // s3 += s15 * 666643;
- // s4 += s15 * 470296;
- // s5 += s15 * 654183;
- // s6 -= s15 * 997805;
- // s7 += s15 * 136657;
- // s8 -= s15 * 683901;
- $s3 += self::mul($s15, 666643, 20);
- $s4 += self::mul($s15, 470296, 19);
- $s5 += self::mul($s15, 654183, 20);
- $s6 -= self::mul($s15, 997805, 20);
- $s7 += self::mul($s15, 136657, 18);
- $s8 -= self::mul($s15, 683901, 20);
-
- // s2 += s14 * 666643;
- // s3 += s14 * 470296;
- // s4 += s14 * 654183;
- // s5 -= s14 * 997805;
- // s6 += s14 * 136657;
- // s7 -= s14 * 683901;
- $s2 += self::mul($s14, 666643, 20);
- $s3 += self::mul($s14, 470296, 19);
- $s4 += self::mul($s14, 654183, 20);
- $s5 -= self::mul($s14, 997805, 20);
- $s6 += self::mul($s14, 136657, 18);
- $s7 -= self::mul($s14, 683901, 20);
-
- // s1 += s13 * 666643;
- // s2 += s13 * 470296;
- // s3 += s13 * 654183;
- // s4 -= s13 * 997805;
- // s5 += s13 * 136657;
- // s6 -= s13 * 683901;
- $s1 += self::mul($s13, 666643, 20);
- $s2 += self::mul($s13, 470296, 19);
- $s3 += self::mul($s13, 654183, 20);
- $s4 -= self::mul($s13, 997805, 20);
- $s5 += self::mul($s13, 136657, 18);
- $s6 -= self::mul($s13, 683901, 20);
-
- // s0 += s12 * 666643;
- // s1 += s12 * 470296;
- // s2 += s12 * 654183;
- // s3 -= s12 * 997805;
- // s4 += s12 * 136657;
- // s5 -= s12 * 683901;
- // s12 = 0;
- $s0 += self::mul($s12, 666643, 20);
- $s1 += self::mul($s12, 470296, 19);
- $s2 += self::mul($s12, 654183, 20);
- $s3 -= self::mul($s12, 997805, 20);
- $s4 += self::mul($s12, 136657, 18);
- $s5 -= self::mul($s12, 683901, 20);
- $s12 = 0;
-
- // carry0 = (s0 + (int64_t) (1L << 20)) >> 21;
- // s1 += carry0;
- // s0 -= carry0 * ((uint64_t) 1L << 21);
- $carry0 = ($s0 + (1 << 20)) >> 21;
- $s1 += $carry0;
- $s0 -= $carry0 << 21;
- // carry2 = (s2 + (int64_t) (1L << 20)) >> 21;
- // s3 += carry2;
- // s2 -= carry2 * ((uint64_t) 1L << 21);
- $carry2 = ($s2 + (1 << 20)) >> 21;
- $s3 += $carry2;
- $s2 -= $carry2 << 21;
- // carry4 = (s4 + (int64_t) (1L << 20)) >> 21;
- // s5 += carry4;
- // s4 -= carry4 * ((uint64_t) 1L << 21);
- $carry4 = ($s4 + (1 << 20)) >> 21;
- $s5 += $carry4;
- $s4 -= $carry4 << 21;
- // carry6 = (s6 + (int64_t) (1L << 20)) >> 21;
- // s7 += carry6;
- // s6 -= carry6 * ((uint64_t) 1L << 21);
- $carry6 = ($s6 + (1 << 20)) >> 21;
- $s7 += $carry6;
- $s6 -= $carry6 << 21;
- // carry8 = (s8 + (int64_t) (1L << 20)) >> 21;
- // s9 += carry8;
- // s8 -= carry8 * ((uint64_t) 1L << 21);
- $carry8 = ($s8 + (1 << 20)) >> 21;
- $s9 += $carry8;
- $s8 -= $carry8 << 21;
- // carry10 = (s10 + (int64_t) (1L << 20)) >> 21;
- // s11 += carry10;
- // s10 -= carry10 * ((uint64_t) 1L << 21);
- $carry10 = ($s10 + (1 << 20)) >> 21;
- $s11 += $carry10;
- $s10 -= $carry10 << 21;
-
- // carry1 = (s1 + (int64_t) (1L << 20)) >> 21;
- // s2 += carry1;
- // s1 -= carry1 * ((uint64_t) 1L << 21);
- $carry1 = ($s1 + (1 << 20)) >> 21;
- $s2 += $carry1;
- $s1 -= $carry1 << 21;
- // carry3 = (s3 + (int64_t) (1L << 20)) >> 21;
- // s4 += carry3;
- // s3 -= carry3 * ((uint64_t) 1L << 21);
- $carry3 = ($s3 + (1 << 20)) >> 21;
- $s4 += $carry3;
- $s3 -= $carry3 << 21;
- // carry5 = (s5 + (int64_t) (1L << 20)) >> 21;
- // s6 += carry5;
- // s5 -= carry5 * ((uint64_t) 1L << 21);
- $carry5 = ($s5 + (1 << 20)) >> 21;
- $s6 += $carry5;
- $s5 -= $carry5 << 21;
- // carry7 = (s7 + (int64_t) (1L << 20)) >> 21;
- // s8 += carry7;
- // s7 -= carry7 * ((uint64_t) 1L << 21);
- $carry7 = ($s7 + (1 << 20)) >> 21;
- $s8 += $carry7;
- $s7 -= $carry7 << 21;
- // carry9 = (s9 + (int64_t) (1L << 20)) >> 21;
- // s10 += carry9;
- // s9 -= carry9 * ((uint64_t) 1L << 21);
- $carry9 = ($s9 + (1 << 20)) >> 21;
- $s10 += $carry9;
- $s9 -= $carry9 << 21;
- // carry11 = (s11 + (int64_t) (1L << 20)) >> 21;
- // s12 += carry11;
- // s11 -= carry11 * ((uint64_t) 1L << 21);
- $carry11 = ($s11 + (1 << 20)) >> 21;
- $s12 += $carry11;
- $s11 -= $carry11 << 21;
-
- // s0 += s12 * 666643;
- // s1 += s12 * 470296;
- // s2 += s12 * 654183;
- // s3 -= s12 * 997805;
- // s4 += s12 * 136657;
- // s5 -= s12 * 683901;
- // s12 = 0;
- $s0 += self::mul($s12, 666643, 20);
- $s1 += self::mul($s12, 470296, 19);
- $s2 += self::mul($s12, 654183, 20);
- $s3 -= self::mul($s12, 997805, 20);
- $s4 += self::mul($s12, 136657, 18);
- $s5 -= self::mul($s12, 683901, 20);
- $s12 = 0;
-
- // carry0 = s0 >> 21;
- // s1 += carry0;
- // s0 -= carry0 * ((uint64_t) 1L << 21);
- $carry0 = $s0 >> 21;
- $s1 += $carry0;
- $s0 -= $carry0 << 21;
- // carry1 = s1 >> 21;
- // s2 += carry1;
- // s1 -= carry1 * ((uint64_t) 1L << 21);
- $carry1 = $s1 >> 21;
- $s2 += $carry1;
- $s1 -= $carry1 << 21;
- // carry2 = s2 >> 21;
- // s3 += carry2;
- // s2 -= carry2 * ((uint64_t) 1L << 21);
- $carry2 = $s2 >> 21;
- $s3 += $carry2;
- $s2 -= $carry2 << 21;
- // carry3 = s3 >> 21;
- // s4 += carry3;
- // s3 -= carry3 * ((uint64_t) 1L << 21);
- $carry3 = $s3 >> 21;
- $s4 += $carry3;
- $s3 -= $carry3 << 21;
- // carry4 = s4 >> 21;
- // s5 += carry4;
- // s4 -= carry4 * ((uint64_t) 1L << 21);
- $carry4 = $s4 >> 21;
- $s5 += $carry4;
- $s4 -= $carry4 << 21;
- // carry5 = s5 >> 21;
- // s6 += carry5;
- // s5 -= carry5 * ((uint64_t) 1L << 21);
- $carry5 = $s5 >> 21;
- $s6 += $carry5;
- $s5 -= $carry5 << 21;
- // carry6 = s6 >> 21;
- // s7 += carry6;
- // s6 -= carry6 * ((uint64_t) 1L << 21);
- $carry6 = $s6 >> 21;
- $s7 += $carry6;
- $s6 -= $carry6 << 21;
- // carry7 = s7 >> 21;
- // s8 += carry7;
- // s7 -= carry7 * ((uint64_t) 1L << 21);
- $carry7 = $s7 >> 21;
- $s8 += $carry7;
- $s7 -= $carry7 << 21;
- // carry8 = s8 >> 21;
- // s9 += carry8;
- // s8 -= carry8 * ((uint64_t) 1L << 21);
- $carry8 = $s8 >> 21;
- $s9 += $carry8;
- $s8 -= $carry8 << 21;
- // carry9 = s9 >> 21;
- // s10 += carry9;
- // s9 -= carry9 * ((uint64_t) 1L << 21);
- $carry9 = $s9 >> 21;
- $s10 += $carry9;
- $s9 -= $carry9 << 21;
- // carry10 = s10 >> 21;
- // s11 += carry10;
- // s10 -= carry10 * ((uint64_t) 1L << 21);
- $carry10 = $s10 >> 21;
- $s11 += $carry10;
- $s10 -= $carry10 << 21;
- // carry11 = s11 >> 21;
- // s12 += carry11;
- // s11 -= carry11 * ((uint64_t) 1L << 21);
- $carry11 = $s11 >> 21;
- $s12 += $carry11;
- $s11 -= $carry11 << 21;
-
- // s0 += s12 * 666643;
- // s1 += s12 * 470296;
- // s2 += s12 * 654183;
- // s3 -= s12 * 997805;
- // s4 += s12 * 136657;
- // s5 -= s12 * 683901;
- $s0 += self::mul($s12, 666643, 20);
- $s1 += self::mul($s12, 470296, 19);
- $s2 += self::mul($s12, 654183, 20);
- $s3 -= self::mul($s12, 997805, 20);
- $s4 += self::mul($s12, 136657, 18);
- $s5 -= self::mul($s12, 683901, 20);
-
- // carry0 = s0 >> 21;
- // s1 += carry0;
- // s0 -= carry0 * ((uint64_t) 1L << 21);
- $carry0 = $s0 >> 21;
- $s1 += $carry0;
- $s0 -= $carry0 << 21;
- // carry1 = s1 >> 21;
- // s2 += carry1;
- // s1 -= carry1 * ((uint64_t) 1L << 21);
- $carry1 = $s1 >> 21;
- $s2 += $carry1;
- $s1 -= $carry1 << 21;
- // carry2 = s2 >> 21;
- // s3 += carry2;
- // s2 -= carry2 * ((uint64_t) 1L << 21);
- $carry2 = $s2 >> 21;
- $s3 += $carry2;
- $s2 -= $carry2 << 21;
- // carry3 = s3 >> 21;
- // s4 += carry3;
- // s3 -= carry3 * ((uint64_t) 1L << 21);
- $carry3 = $s3 >> 21;
- $s4 += $carry3;
- $s3 -= $carry3 << 21;
- // carry4 = s4 >> 21;
- // s5 += carry4;
- // s4 -= carry4 * ((uint64_t) 1L << 21);
- $carry4 = $s4 >> 21;
- $s5 += $carry4;
- $s4 -= $carry4 << 21;
- // carry5 = s5 >> 21;
- // s6 += carry5;
- // s5 -= carry5 * ((uint64_t) 1L << 21);
- $carry5 = $s5 >> 21;
- $s6 += $carry5;
- $s5 -= $carry5 << 21;
- // carry6 = s6 >> 21;
- // s7 += carry6;
- // s6 -= carry6 * ((uint64_t) 1L << 21);
- $carry6 = $s6 >> 21;
- $s7 += $carry6;
- $s6 -= $carry6 << 21;
- // carry7 = s7 >> 21;
- // s8 += carry7;
- // s7 -= carry7 * ((uint64_t) 1L << 21);
- $carry7 = $s7 >> 21;
- $s8 += $carry7;
- $s7 -= $carry7 << 21;
- // carry8 = s8 >> 21;
- // s9 += carry8;
- // s8 -= carry8 * ((uint64_t) 1L << 21);
- $carry8 = $s8 >> 21;
- $s9 += $carry8;
- $s8 -= $carry8 << 21;
- // carry9 = s9 >> 21;
- // s10 += carry9;
- // s9 -= carry9 * ((uint64_t) 1L << 21);
- $carry9 = $s9 >> 21;
- $s10 += $carry9;
- $s9 -= $carry9 << 21;
- // carry10 = s10 >> 21;
- // s11 += carry10;
- // s10 -= carry10 * ((uint64_t) 1L << 21);
- $carry10 = $s10 >> 21;
- $s11 += $carry10;
- $s10 -= $carry10 << 21;
-
- $s = array_fill(0, 32, 0);
- // s[0] = s0 >> 0;
- $s[0] = $s0 >> 0;
- // s[1] = s0 >> 8;
- $s[1] = $s0 >> 8;
- // s[2] = (s0 >> 16) | (s1 * ((uint64_t) 1 << 5));
- $s[2] = ($s0 >> 16) | ($s1 << 5);
- // s[3] = s1 >> 3;
- $s[3] = $s1 >> 3;
- // s[4] = s1 >> 11;
- $s[4] = $s1 >> 11;
- // s[5] = (s1 >> 19) | (s2 * ((uint64_t) 1 << 2));
- $s[5] = ($s1 >> 19) | ($s2 << 2);
- // s[6] = s2 >> 6;
- $s[6] = $s2 >> 6;
- // s[7] = (s2 >> 14) | (s3 * ((uint64_t) 1 << 7));
- $s[7] = ($s2 >> 14) | ($s3 << 7);
- // s[8] = s3 >> 1;
- $s[8] = $s3 >> 1;
- // s[9] = s3 >> 9;
- $s[9] = $s3 >> 9;
- // s[10] = (s3 >> 17) | (s4 * ((uint64_t) 1 << 4));
- $s[10] = ($s3 >> 17) | ($s4 << 4);
- // s[11] = s4 >> 4;
- $s[11] = $s4 >> 4;
- // s[12] = s4 >> 12;
- $s[12] = $s4 >> 12;
- // s[13] = (s4 >> 20) | (s5 * ((uint64_t) 1 << 1));
- $s[13] = ($s4 >> 20) | ($s5 << 1);
- // s[14] = s5 >> 7;
- $s[14] = $s5 >> 7;
- // s[15] = (s5 >> 15) | (s6 * ((uint64_t) 1 << 6));
- $s[15] = ($s5 >> 15) | ($s6 << 6);
- // s[16] = s6 >> 2;
- $s[16] = $s6 >> 2;
- // s[17] = s6 >> 10;
- $s[17] = $s6 >> 10;
- // s[18] = (s6 >> 18) | (s7 * ((uint64_t) 1 << 3));
- $s[18] = ($s6 >> 18) | ($s7 << 3);
- // s[19] = s7 >> 5;
- $s[19] = $s7 >> 5;
- // s[20] = s7 >> 13;
- $s[20] = $s7 >> 13;
- // s[21] = s8 >> 0;
- $s[21] = $s8 >> 0;
- // s[22] = s8 >> 8;
- $s[22] = $s8 >> 8;
- // s[23] = (s8 >> 16) | (s9 * ((uint64_t) 1 << 5));
- $s[23] = ($s8 >> 16) | ($s9 << 5);
- // s[24] = s9 >> 3;
- $s[24] = $s9 >> 3;
- // s[25] = s9 >> 11;
- $s[25] = $s9 >> 11;
- // s[26] = (s9 >> 19) | (s10 * ((uint64_t) 1 << 2));
- $s[26] = ($s9 >> 19) | ($s10 << 2);
- // s[27] = s10 >> 6;
- $s[27] = $s10 >> 6;
- // s[28] = (s10 >> 14) | (s11 * ((uint64_t) 1 << 7));
- $s[28] = ($s10 >> 14) | ($s11 << 7);
- // s[29] = s11 >> 1;
- $s[29] = $s11 >> 1;
- // s[30] = s11 >> 9;
- $s[30] = $s11 >> 9;
- // s[31] = s11 >> 17;
- $s[31] = $s11 >> 17;
- return self::intArrayToString($s);
- }
-
- /**
- * @param string $s
- * @return string
- */
- public static function sc25519_sq($s)
- {
- return self::sc25519_mul($s, $s);
- }
-
- /**
- * @param string $s
- * @param int $n
- * @param string $a
- * @return string
- */
- public static function sc25519_sqmul($s, $n, $a)
- {
- for ($i = 0; $i < $n; ++$i) {
- $s = self::sc25519_sq($s);
- }
- return self::sc25519_mul($s, $a);
- }
-
- /**
- * @param string $s
- * @return string
- */
- public static function sc25519_invert($s)
- {
- $_10 = self::sc25519_sq($s);
- $_11 = self::sc25519_mul($s, $_10);
- $_100 = self::sc25519_mul($s, $_11);
- $_1000 = self::sc25519_sq($_100);
- $_1010 = self::sc25519_mul($_10, $_1000);
- $_1011 = self::sc25519_mul($s, $_1010);
- $_10000 = self::sc25519_sq($_1000);
- $_10110 = self::sc25519_sq($_1011);
- $_100000 = self::sc25519_mul($_1010, $_10110);
- $_100110 = self::sc25519_mul($_10000, $_10110);
- $_1000000 = self::sc25519_sq($_100000);
- $_1010000 = self::sc25519_mul($_10000, $_1000000);
- $_1010011 = self::sc25519_mul($_11, $_1010000);
- $_1100011 = self::sc25519_mul($_10000, $_1010011);
- $_1100111 = self::sc25519_mul($_100, $_1100011);
- $_1101011 = self::sc25519_mul($_100, $_1100111);
- $_10010011 = self::sc25519_mul($_1000000, $_1010011);
- $_10010111 = self::sc25519_mul($_100, $_10010011);
- $_10111101 = self::sc25519_mul($_100110, $_10010111);
- $_11010011 = self::sc25519_mul($_10110, $_10111101);
- $_11100111 = self::sc25519_mul($_1010000, $_10010111);
- $_11101011 = self::sc25519_mul($_100, $_11100111);
- $_11110101 = self::sc25519_mul($_1010, $_11101011);
-
- $recip = self::sc25519_mul($_1011, $_11110101);
- $recip = self::sc25519_sqmul($recip, 126, $_1010011);
- $recip = self::sc25519_sqmul($recip, 9, $_10);
- $recip = self::sc25519_mul($recip, $_11110101);
- $recip = self::sc25519_sqmul($recip, 7, $_1100111);
- $recip = self::sc25519_sqmul($recip, 9, $_11110101);
- $recip = self::sc25519_sqmul($recip, 11, $_10111101);
- $recip = self::sc25519_sqmul($recip, 8, $_11100111);
- $recip = self::sc25519_sqmul($recip, 9, $_1101011);
- $recip = self::sc25519_sqmul($recip, 6, $_1011);
- $recip = self::sc25519_sqmul($recip, 14, $_10010011);
- $recip = self::sc25519_sqmul($recip, 10, $_1100011);
- $recip = self::sc25519_sqmul($recip, 9, $_10010111);
- $recip = self::sc25519_sqmul($recip, 10, $_11110101);
- $recip = self::sc25519_sqmul($recip, 8, $_11010011);
- return self::sc25519_sqmul($recip, 8, $_11101011);
- }
-
- /**
- * @param string $s
- * @return string
- */
- public static function clamp($s)
- {
- $s_ = self::stringToIntArray($s);
- $s_[0] &= 248;
- $s_[31] |= 64;
- $s_[31] &= 128;
- return self::intArrayToString($s_);
- }
-}
+<?php + +if (class_exists('ParagonIE_Sodium_Core_Curve25519', false)) { + return; +} + +/** + * Class ParagonIE_Sodium_Core_Curve25519 + * + * Implements Curve25519 core functions + * + * Based on the ref10 curve25519 code provided by libsodium + * + * @ref https://github.com/jedisct1/libsodium/blob/master/src/libsodium/crypto_core/curve25519/ref10/curve25519_ref10.c + */ +abstract class ParagonIE_Sodium_Core_Curve25519 extends ParagonIE_Sodium_Core_Curve25519_H +{ + /** + * Get a field element of size 10 with a value of 0 + * + * @internal You should not use this directly from another application + * + * @return ParagonIE_Sodium_Core_Curve25519_Fe + */ + public static function fe_0() + { + return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray( + array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0) + ); + } + + /** + * Get a field element of size 10 with a value of 1 + * + * @internal You should not use this directly from another application + * + * @return ParagonIE_Sodium_Core_Curve25519_Fe + */ + public static function fe_1() + { + return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray( + array(1, 0, 0, 0, 0, 0, 0, 0, 0, 0) + ); + } + + /** + * Add two field elements. + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $f + * @param ParagonIE_Sodium_Core_Curve25519_Fe $g + * @return ParagonIE_Sodium_Core_Curve25519_Fe + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedOperand + */ + public static function fe_add( + ParagonIE_Sodium_Core_Curve25519_Fe $f, + ParagonIE_Sodium_Core_Curve25519_Fe $g + ) { + /** @var array<int, int> $arr */ + $arr = array(); + for ($i = 0; $i < 10; ++$i) { + $arr[$i] = (int) ($f[$i] + $g[$i]); + } + return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray($arr); + } + + /** + * Constant-time conditional move. + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $f + * @param ParagonIE_Sodium_Core_Curve25519_Fe $g + * @param int $b + * @return ParagonIE_Sodium_Core_Curve25519_Fe + * @psalm-suppress MixedAssignment + */ + public static function fe_cmov( + ParagonIE_Sodium_Core_Curve25519_Fe $f, + ParagonIE_Sodium_Core_Curve25519_Fe $g, + $b = 0 + ) { + /** @var array<int, int> $h */ + $h = array(); + $b *= -1; + for ($i = 0; $i < 10; ++$i) { + $x = (($f[$i] ^ $g[$i]) & $b); + $h[$i] = ($f[$i]) ^ $x; + } + return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray($h); + } + + /** + * Create a copy of a field element. + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $f + * @return ParagonIE_Sodium_Core_Curve25519_Fe + */ + public static function fe_copy(ParagonIE_Sodium_Core_Curve25519_Fe $f) + { + $h = clone $f; + return $h; + } + + /** + * Give: 32-byte string. + * Receive: A field element object to use for internal calculations. + * + * @internal You should not use this directly from another application + * + * @param string $s + * @return ParagonIE_Sodium_Core_Curve25519_Fe + * @throws RangeException + * @throws TypeError + */ + public static function fe_frombytes($s) + { + if (self::strlen($s) !== 32) { + throw new RangeException('Expected a 32-byte string.'); + } + $h0 = self::load_4($s); + $h1 = self::load_3(self::substr($s, 4, 3)) << 6; + $h2 = self::load_3(self::substr($s, 7, 3)) << 5; + $h3 = self::load_3(self::substr($s, 10, 3)) << 3; + $h4 = self::load_3(self::substr($s, 13, 3)) << 2; + $h5 = self::load_4(self::substr($s, 16, 4)); + $h6 = self::load_3(self::substr($s, 20, 3)) << 7; + $h7 = self::load_3(self::substr($s, 23, 3)) << 5; + $h8 = self::load_3(self::substr($s, 26, 3)) << 4; + $h9 = (self::load_3(self::substr($s, 29, 3)) & 8388607) << 2; + + $carry9 = ($h9 + (1 << 24)) >> 25; + $h0 += self::mul($carry9, 19, 5); + $h9 -= $carry9 << 25; + $carry1 = ($h1 + (1 << 24)) >> 25; + $h2 += $carry1; + $h1 -= $carry1 << 25; + $carry3 = ($h3 + (1 << 24)) >> 25; + $h4 += $carry3; + $h3 -= $carry3 << 25; + $carry5 = ($h5 + (1 << 24)) >> 25; + $h6 += $carry5; + $h5 -= $carry5 << 25; + $carry7 = ($h7 + (1 << 24)) >> 25; + $h8 += $carry7; + $h7 -= $carry7 << 25; + + $carry0 = ($h0 + (1 << 25)) >> 26; + $h1 += $carry0; + $h0 -= $carry0 << 26; + $carry2 = ($h2 + (1 << 25)) >> 26; + $h3 += $carry2; + $h2 -= $carry2 << 26; + $carry4 = ($h4 + (1 << 25)) >> 26; + $h5 += $carry4; + $h4 -= $carry4 << 26; + $carry6 = ($h6 + (1 << 25)) >> 26; + $h7 += $carry6; + $h6 -= $carry6 << 26; + $carry8 = ($h8 + (1 << 25)) >> 26; + $h9 += $carry8; + $h8 -= $carry8 << 26; + + return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray( + array( + (int) $h0, + (int) $h1, + (int) $h2, + (int) $h3, + (int) $h4, + (int) $h5, + (int) $h6, + (int) $h7, + (int) $h8, + (int) $h9 + ) + ); + } + + /** + * Convert a field element to a byte string. + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $h + * @return string + */ + public static function fe_tobytes(ParagonIE_Sodium_Core_Curve25519_Fe $h) + { + $h0 = (int) $h[0]; + $h1 = (int) $h[1]; + $h2 = (int) $h[2]; + $h3 = (int) $h[3]; + $h4 = (int) $h[4]; + $h5 = (int) $h[5]; + $h6 = (int) $h[6]; + $h7 = (int) $h[7]; + $h8 = (int) $h[8]; + $h9 = (int) $h[9]; + + $q = (self::mul($h9, 19, 5) + (1 << 24)) >> 25; + $q = ($h0 + $q) >> 26; + $q = ($h1 + $q) >> 25; + $q = ($h2 + $q) >> 26; + $q = ($h3 + $q) >> 25; + $q = ($h4 + $q) >> 26; + $q = ($h5 + $q) >> 25; + $q = ($h6 + $q) >> 26; + $q = ($h7 + $q) >> 25; + $q = ($h8 + $q) >> 26; + $q = ($h9 + $q) >> 25; + + $h0 += self::mul($q, 19, 5); + + $carry0 = $h0 >> 26; + $h1 += $carry0; + $h0 -= $carry0 << 26; + $carry1 = $h1 >> 25; + $h2 += $carry1; + $h1 -= $carry1 << 25; + $carry2 = $h2 >> 26; + $h3 += $carry2; + $h2 -= $carry2 << 26; + $carry3 = $h3 >> 25; + $h4 += $carry3; + $h3 -= $carry3 << 25; + $carry4 = $h4 >> 26; + $h5 += $carry4; + $h4 -= $carry4 << 26; + $carry5 = $h5 >> 25; + $h6 += $carry5; + $h5 -= $carry5 << 25; + $carry6 = $h6 >> 26; + $h7 += $carry6; + $h6 -= $carry6 << 26; + $carry7 = $h7 >> 25; + $h8 += $carry7; + $h7 -= $carry7 << 25; + $carry8 = $h8 >> 26; + $h9 += $carry8; + $h8 -= $carry8 << 26; + $carry9 = $h9 >> 25; + $h9 -= $carry9 << 25; + + /** + * @var array<int, int> + */ + $s = array( + (int) (($h0 >> 0) & 0xff), + (int) (($h0 >> 8) & 0xff), + (int) (($h0 >> 16) & 0xff), + (int) ((($h0 >> 24) | ($h1 << 2)) & 0xff), + (int) (($h1 >> 6) & 0xff), + (int) (($h1 >> 14) & 0xff), + (int) ((($h1 >> 22) | ($h2 << 3)) & 0xff), + (int) (($h2 >> 5) & 0xff), + (int) (($h2 >> 13) & 0xff), + (int) ((($h2 >> 21) | ($h3 << 5)) & 0xff), + (int) (($h3 >> 3) & 0xff), + (int) (($h3 >> 11) & 0xff), + (int) ((($h3 >> 19) | ($h4 << 6)) & 0xff), + (int) (($h4 >> 2) & 0xff), + (int) (($h4 >> 10) & 0xff), + (int) (($h4 >> 18) & 0xff), + (int) (($h5 >> 0) & 0xff), + (int) (($h5 >> 8) & 0xff), + (int) (($h5 >> 16) & 0xff), + (int) ((($h5 >> 24) | ($h6 << 1)) & 0xff), + (int) (($h6 >> 7) & 0xff), + (int) (($h6 >> 15) & 0xff), + (int) ((($h6 >> 23) | ($h7 << 3)) & 0xff), + (int) (($h7 >> 5) & 0xff), + (int) (($h7 >> 13) & 0xff), + (int) ((($h7 >> 21) | ($h8 << 4)) & 0xff), + (int) (($h8 >> 4) & 0xff), + (int) (($h8 >> 12) & 0xff), + (int) ((($h8 >> 20) | ($h9 << 6)) & 0xff), + (int) (($h9 >> 2) & 0xff), + (int) (($h9 >> 10) & 0xff), + (int) (($h9 >> 18) & 0xff) + ); + return self::intArrayToString($s); + } + + /** + * Is a field element negative? (1 = yes, 0 = no. Used in calculations.) + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $f + * @return int + * @throws SodiumException + * @throws TypeError + */ + public static function fe_isnegative(ParagonIE_Sodium_Core_Curve25519_Fe $f) + { + $str = self::fe_tobytes($f); + return (int) (self::chrToInt($str[0]) & 1); + } + + /** + * Returns 0 if this field element results in all NUL bytes. + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $f + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function fe_isnonzero(ParagonIE_Sodium_Core_Curve25519_Fe $f) + { + static $zero; + if ($zero === null) { + $zero = str_repeat("\x00", 32); + } + /** @var string $zero */ + /** @var string $str */ + $str = self::fe_tobytes($f); + return !self::verify_32($str, (string) $zero); + } + + /** + * Multiply two field elements + * + * h = f * g + * + * @internal You should not use this directly from another application + * + * @security Is multiplication a source of timing leaks? If so, can we do + * anything to prevent that from happening? + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $f + * @param ParagonIE_Sodium_Core_Curve25519_Fe $g + * @return ParagonIE_Sodium_Core_Curve25519_Fe + */ + public static function fe_mul( + ParagonIE_Sodium_Core_Curve25519_Fe $f, + ParagonIE_Sodium_Core_Curve25519_Fe $g + ) { + // Ensure limbs aren't oversized. + $f = self::fe_normalize($f); + $g = self::fe_normalize($g); + $f0 = $f[0]; + $f1 = $f[1]; + $f2 = $f[2]; + $f3 = $f[3]; + $f4 = $f[4]; + $f5 = $f[5]; + $f6 = $f[6]; + $f7 = $f[7]; + $f8 = $f[8]; + $f9 = $f[9]; + $g0 = $g[0]; + $g1 = $g[1]; + $g2 = $g[2]; + $g3 = $g[3]; + $g4 = $g[4]; + $g5 = $g[5]; + $g6 = $g[6]; + $g7 = $g[7]; + $g8 = $g[8]; + $g9 = $g[9]; + $g1_19 = self::mul($g1, 19, 5); + $g2_19 = self::mul($g2, 19, 5); + $g3_19 = self::mul($g3, 19, 5); + $g4_19 = self::mul($g4, 19, 5); + $g5_19 = self::mul($g5, 19, 5); + $g6_19 = self::mul($g6, 19, 5); + $g7_19 = self::mul($g7, 19, 5); + $g8_19 = self::mul($g8, 19, 5); + $g9_19 = self::mul($g9, 19, 5); + $f1_2 = $f1 << 1; + $f3_2 = $f3 << 1; + $f5_2 = $f5 << 1; + $f7_2 = $f7 << 1; + $f9_2 = $f9 << 1; + $f0g0 = self::mul($f0, $g0, 26); + $f0g1 = self::mul($f0, $g1, 25); + $f0g2 = self::mul($f0, $g2, 26); + $f0g3 = self::mul($f0, $g3, 25); + $f0g4 = self::mul($f0, $g4, 26); + $f0g5 = self::mul($f0, $g5, 25); + $f0g6 = self::mul($f0, $g6, 26); + $f0g7 = self::mul($f0, $g7, 25); + $f0g8 = self::mul($f0, $g8, 26); + $f0g9 = self::mul($f0, $g9, 26); + $f1g0 = self::mul($f1, $g0, 26); + $f1g1_2 = self::mul($f1_2, $g1, 25); + $f1g2 = self::mul($f1, $g2, 26); + $f1g3_2 = self::mul($f1_2, $g3, 25); + $f1g4 = self::mul($f1, $g4, 26); + $f1g5_2 = self::mul($f1_2, $g5, 25); + $f1g6 = self::mul($f1, $g6, 26); + $f1g7_2 = self::mul($f1_2, $g7, 25); + $f1g8 = self::mul($f1, $g8, 26); + $f1g9_38 = self::mul($g9_19, $f1_2, 26); + $f2g0 = self::mul($f2, $g0, 26); + $f2g1 = self::mul($f2, $g1, 25); + $f2g2 = self::mul($f2, $g2, 26); + $f2g3 = self::mul($f2, $g3, 25); + $f2g4 = self::mul($f2, $g4, 26); + $f2g5 = self::mul($f2, $g5, 25); + $f2g6 = self::mul($f2, $g6, 26); + $f2g7 = self::mul($f2, $g7, 25); + $f2g8_19 = self::mul($g8_19, $f2, 26); + $f2g9_19 = self::mul($g9_19, $f2, 26); + $f3g0 = self::mul($f3, $g0, 26); + $f3g1_2 = self::mul($f3_2, $g1, 25); + $f3g2 = self::mul($f3, $g2, 26); + $f3g3_2 = self::mul($f3_2, $g3, 25); + $f3g4 = self::mul($f3, $g4, 26); + $f3g5_2 = self::mul($f3_2, $g5, 25); + $f3g6 = self::mul($f3, $g6, 26); + $f3g7_38 = self::mul($g7_19, $f3_2, 26); + $f3g8_19 = self::mul($g8_19, $f3, 25); + $f3g9_38 = self::mul($g9_19, $f3_2, 26); + $f4g0 = self::mul($f4, $g0, 26); + $f4g1 = self::mul($f4, $g1, 25); + $f4g2 = self::mul($f4, $g2, 26); + $f4g3 = self::mul($f4, $g3, 25); + $f4g4 = self::mul($f4, $g4, 26); + $f4g5 = self::mul($f4, $g5, 25); + $f4g6_19 = self::mul($g6_19, $f4, 26); + $f4g7_19 = self::mul($g7_19, $f4, 26); + $f4g8_19 = self::mul($g8_19, $f4, 26); + $f4g9_19 = self::mul($g9_19, $f4, 26); + $f5g0 = self::mul($f5, $g0, 26); + $f5g1_2 = self::mul($f5_2, $g1, 25); + $f5g2 = self::mul($f5, $g2, 26); + $f5g3_2 = self::mul($f5_2, $g3, 25); + $f5g4 = self::mul($f5, $g4, 26); + $f5g5_38 = self::mul($g5_19, $f5_2, 26); + $f5g6_19 = self::mul($g6_19, $f5, 25); + $f5g7_38 = self::mul($g7_19, $f5_2, 26); + $f5g8_19 = self::mul($g8_19, $f5, 25); + $f5g9_38 = self::mul($g9_19, $f5_2, 26); + $f6g0 = self::mul($f6, $g0, 26); + $f6g1 = self::mul($f6, $g1, 25); + $f6g2 = self::mul($f6, $g2, 26); + $f6g3 = self::mul($f6, $g3, 25); + $f6g4_19 = self::mul($g4_19, $f6, 26); + $f6g5_19 = self::mul($g5_19, $f6, 26); + $f6g6_19 = self::mul($g6_19, $f6, 26); + $f6g7_19 = self::mul($g7_19, $f6, 26); + $f6g8_19 = self::mul($g8_19, $f6, 26); + $f6g9_19 = self::mul($g9_19, $f6, 26); + $f7g0 = self::mul($f7, $g0, 26); + $f7g1_2 = self::mul($f7_2, $g1, 25); + $f7g2 = self::mul($f7, $g2, 26); + $f7g3_38 = self::mul($g3_19, $f7_2, 26); + $f7g4_19 = self::mul($g4_19, $f7, 26); + $f7g5_38 = self::mul($g5_19, $f7_2, 26); + $f7g6_19 = self::mul($g6_19, $f7, 25); + $f7g7_38 = self::mul($g7_19, $f7_2, 26); + $f7g8_19 = self::mul($g8_19, $f7, 25); + $f7g9_38 = self::mul($g9_19,$f7_2, 26); + $f8g0 = self::mul($f8, $g0, 26); + $f8g1 = self::mul($f8, $g1, 25); + $f8g2_19 = self::mul($g2_19, $f8, 26); + $f8g3_19 = self::mul($g3_19, $f8, 26); + $f8g4_19 = self::mul($g4_19, $f8, 26); + $f8g5_19 = self::mul($g5_19, $f8, 26); + $f8g6_19 = self::mul($g6_19, $f8, 26); + $f8g7_19 = self::mul($g7_19, $f8, 26); + $f8g8_19 = self::mul($g8_19, $f8, 26); + $f8g9_19 = self::mul($g9_19, $f8, 26); + $f9g0 = self::mul($f9, $g0, 26); + $f9g1_38 = self::mul($g1_19, $f9_2, 26); + $f9g2_19 = self::mul($g2_19, $f9, 25); + $f9g3_38 = self::mul($g3_19, $f9_2, 26); + $f9g4_19 = self::mul($g4_19, $f9, 25); + $f9g5_38 = self::mul($g5_19, $f9_2, 26); + $f9g6_19 = self::mul($g6_19, $f9, 25); + $f9g7_38 = self::mul($g7_19, $f9_2, 26); + $f9g8_19 = self::mul($g8_19, $f9, 25); + $f9g9_38 = self::mul($g9_19, $f9_2, 26); + + $h0 = $f0g0 + $f1g9_38 + $f2g8_19 + $f3g7_38 + $f4g6_19 + $f5g5_38 + $f6g4_19 + $f7g3_38 + $f8g2_19 + $f9g1_38; + $h1 = $f0g1 + $f1g0 + $f2g9_19 + $f3g8_19 + $f4g7_19 + $f5g6_19 + $f6g5_19 + $f7g4_19 + $f8g3_19 + $f9g2_19; + $h2 = $f0g2 + $f1g1_2 + $f2g0 + $f3g9_38 + $f4g8_19 + $f5g7_38 + $f6g6_19 + $f7g5_38 + $f8g4_19 + $f9g3_38; + $h3 = $f0g3 + $f1g2 + $f2g1 + $f3g0 + $f4g9_19 + $f5g8_19 + $f6g7_19 + $f7g6_19 + $f8g5_19 + $f9g4_19; + $h4 = $f0g4 + $f1g3_2 + $f2g2 + $f3g1_2 + $f4g0 + $f5g9_38 + $f6g8_19 + $f7g7_38 + $f8g6_19 + $f9g5_38; + $h5 = $f0g5 + $f1g4 + $f2g3 + $f3g2 + $f4g1 + $f5g0 + $f6g9_19 + $f7g8_19 + $f8g7_19 + $f9g6_19; + $h6 = $f0g6 + $f1g5_2 + $f2g4 + $f3g3_2 + $f4g2 + $f5g1_2 + $f6g0 + $f7g9_38 + $f8g8_19 + $f9g7_38; + $h7 = $f0g7 + $f1g6 + $f2g5 + $f3g4 + $f4g3 + $f5g2 + $f6g1 + $f7g0 + $f8g9_19 + $f9g8_19; + $h8 = $f0g8 + $f1g7_2 + $f2g6 + $f3g5_2 + $f4g4 + $f5g3_2 + $f6g2 + $f7g1_2 + $f8g0 + $f9g9_38; + $h9 = $f0g9 + $f1g8 + $f2g7 + $f3g6 + $f4g5 + $f5g4 + $f6g3 + $f7g2 + $f8g1 + $f9g0 ; + + $carry0 = ($h0 + (1 << 25)) >> 26; + $h1 += $carry0; + $h0 -= $carry0 << 26; + $carry4 = ($h4 + (1 << 25)) >> 26; + $h5 += $carry4; + $h4 -= $carry4 << 26; + + $carry1 = ($h1 + (1 << 24)) >> 25; + $h2 += $carry1; + $h1 -= $carry1 << 25; + $carry5 = ($h5 + (1 << 24)) >> 25; + $h6 += $carry5; + $h5 -= $carry5 << 25; + + $carry2 = ($h2 + (1 << 25)) >> 26; + $h3 += $carry2; + $h2 -= $carry2 << 26; + $carry6 = ($h6 + (1 << 25)) >> 26; + $h7 += $carry6; + $h6 -= $carry6 << 26; + + $carry3 = ($h3 + (1 << 24)) >> 25; + $h4 += $carry3; + $h3 -= $carry3 << 25; + $carry7 = ($h7 + (1 << 24)) >> 25; + $h8 += $carry7; + $h7 -= $carry7 << 25; + + $carry4 = ($h4 + (1 << 25)) >> 26; + $h5 += $carry4; + $h4 -= $carry4 << 26; + $carry8 = ($h8 + (1 << 25)) >> 26; + $h9 += $carry8; + $h8 -= $carry8 << 26; + + $carry9 = ($h9 + (1 << 24)) >> 25; + $h0 += self::mul($carry9, 19, 5); + $h9 -= $carry9 << 25; + + $carry0 = ($h0 + (1 << 25)) >> 26; + $h1 += $carry0; + $h0 -= $carry0 << 26; + + return self::fe_normalize( + ParagonIE_Sodium_Core_Curve25519_Fe::fromArray( + array( + (int) $h0, + (int) $h1, + (int) $h2, + (int) $h3, + (int) $h4, + (int) $h5, + (int) $h6, + (int) $h7, + (int) $h8, + (int) $h9 + ) + ) + ); + } + + /** + * Get the negative values for each piece of the field element. + * + * h = -f + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $f + * @return ParagonIE_Sodium_Core_Curve25519_Fe + * @psalm-suppress MixedAssignment + */ + public static function fe_neg(ParagonIE_Sodium_Core_Curve25519_Fe $f) + { + $h = new ParagonIE_Sodium_Core_Curve25519_Fe(); + for ($i = 0; $i < 10; ++$i) { + $h[$i] = -$f[$i]; + } + return self::fe_normalize($h); + } + + /** + * Square a field element + * + * h = f * f + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $f + * @return ParagonIE_Sodium_Core_Curve25519_Fe + */ + public static function fe_sq(ParagonIE_Sodium_Core_Curve25519_Fe $f) + { + $f = self::fe_normalize($f); + $f0 = (int) $f[0]; + $f1 = (int) $f[1]; + $f2 = (int) $f[2]; + $f3 = (int) $f[3]; + $f4 = (int) $f[4]; + $f5 = (int) $f[5]; + $f6 = (int) $f[6]; + $f7 = (int) $f[7]; + $f8 = (int) $f[8]; + $f9 = (int) $f[9]; + + $f0_2 = $f0 << 1; + $f1_2 = $f1 << 1; + $f2_2 = $f2 << 1; + $f3_2 = $f3 << 1; + $f4_2 = $f4 << 1; + $f5_2 = $f5 << 1; + $f6_2 = $f6 << 1; + $f7_2 = $f7 << 1; + $f5_38 = self::mul($f5, 38, 6); + $f6_19 = self::mul($f6, 19, 5); + $f7_38 = self::mul($f7, 38, 6); + $f8_19 = self::mul($f8, 19, 5); + $f9_38 = self::mul($f9, 38, 6); + $f0f0 = self::mul($f0, $f0, 26); + $f0f1_2 = self::mul($f0_2, $f1, 26); + $f0f2_2 = self::mul($f0_2, $f2, 26); + $f0f3_2 = self::mul($f0_2, $f3, 26); + $f0f4_2 = self::mul($f0_2, $f4, 26); + $f0f5_2 = self::mul($f0_2, $f5, 26); + $f0f6_2 = self::mul($f0_2, $f6, 26); + $f0f7_2 = self::mul($f0_2, $f7, 26); + $f0f8_2 = self::mul($f0_2, $f8, 26); + $f0f9_2 = self::mul($f0_2, $f9, 26); + $f1f1_2 = self::mul($f1_2, $f1, 26); + $f1f2_2 = self::mul($f1_2, $f2, 26); + $f1f3_4 = self::mul($f1_2, $f3_2, 26); + $f1f4_2 = self::mul($f1_2, $f4, 26); + $f1f5_4 = self::mul($f1_2, $f5_2, 26); + $f1f6_2 = self::mul($f1_2, $f6, 26); + $f1f7_4 = self::mul($f1_2, $f7_2, 26); + $f1f8_2 = self::mul($f1_2, $f8, 26); + $f1f9_76 = self::mul($f9_38, $f1_2, 27); + $f2f2 = self::mul($f2, $f2, 27); + $f2f3_2 = self::mul($f2_2, $f3, 27); + $f2f4_2 = self::mul($f2_2, $f4, 27); + $f2f5_2 = self::mul($f2_2, $f5, 27); + $f2f6_2 = self::mul($f2_2, $f6, 27); + $f2f7_2 = self::mul($f2_2, $f7, 27); + $f2f8_38 = self::mul($f8_19, $f2_2, 27); + $f2f9_38 = self::mul($f9_38, $f2, 26); + $f3f3_2 = self::mul($f3_2, $f3, 26); + $f3f4_2 = self::mul($f3_2, $f4, 26); + $f3f5_4 = self::mul($f3_2, $f5_2, 26); + $f3f6_2 = self::mul($f3_2, $f6, 26); + $f3f7_76 = self::mul($f7_38, $f3_2, 26); + $f3f8_38 = self::mul($f8_19, $f3_2, 26); + $f3f9_76 = self::mul($f9_38, $f3_2, 26); + $f4f4 = self::mul($f4, $f4, 26); + $f4f5_2 = self::mul($f4_2, $f5, 26); + $f4f6_38 = self::mul($f6_19, $f4_2, 27); + $f4f7_38 = self::mul($f7_38, $f4, 26); + $f4f8_38 = self::mul($f8_19, $f4_2, 27); + $f4f9_38 = self::mul($f9_38, $f4, 26); + $f5f5_38 = self::mul($f5_38, $f5, 26); + $f5f6_38 = self::mul($f6_19, $f5_2, 26); + $f5f7_76 = self::mul($f7_38, $f5_2, 26); + $f5f8_38 = self::mul($f8_19, $f5_2, 26); + $f5f9_76 = self::mul($f9_38, $f5_2, 26); + $f6f6_19 = self::mul($f6_19, $f6, 26); + $f6f7_38 = self::mul($f7_38, $f6, 26); + $f6f8_38 = self::mul($f8_19, $f6_2, 27); + $f6f9_38 = self::mul($f9_38, $f6, 26); + $f7f7_38 = self::mul($f7_38, $f7, 26); + $f7f8_38 = self::mul($f8_19, $f7_2, 26); + $f7f9_76 = self::mul($f9_38, $f7_2, 26); + $f8f8_19 = self::mul($f8_19, $f8, 26); + $f8f9_38 = self::mul($f9_38, $f8, 26); + $f9f9_38 = self::mul($f9_38, $f9, 26); + $h0 = $f0f0 + $f1f9_76 + $f2f8_38 + $f3f7_76 + $f4f6_38 + $f5f5_38; + $h1 = $f0f1_2 + $f2f9_38 + $f3f8_38 + $f4f7_38 + $f5f6_38; + $h2 = $f0f2_2 + $f1f1_2 + $f3f9_76 + $f4f8_38 + $f5f7_76 + $f6f6_19; + $h3 = $f0f3_2 + $f1f2_2 + $f4f9_38 + $f5f8_38 + $f6f7_38; + $h4 = $f0f4_2 + $f1f3_4 + $f2f2 + $f5f9_76 + $f6f8_38 + $f7f7_38; + $h5 = $f0f5_2 + $f1f4_2 + $f2f3_2 + $f6f9_38 + $f7f8_38; + $h6 = $f0f6_2 + $f1f5_4 + $f2f4_2 + $f3f3_2 + $f7f9_76 + $f8f8_19; + $h7 = $f0f7_2 + $f1f6_2 + $f2f5_2 + $f3f4_2 + $f8f9_38; + $h8 = $f0f8_2 + $f1f7_4 + $f2f6_2 + $f3f5_4 + $f4f4 + $f9f9_38; + $h9 = $f0f9_2 + $f1f8_2 + $f2f7_2 + $f3f6_2 + $f4f5_2; + + $carry0 = ($h0 + (1 << 25)) >> 26; + $h1 += $carry0; + $h0 -= $carry0 << 26; + $carry4 = ($h4 + (1 << 25)) >> 26; + $h5 += $carry4; + $h4 -= $carry4 << 26; + + $carry1 = ($h1 + (1 << 24)) >> 25; + $h2 += $carry1; + $h1 -= $carry1 << 25; + $carry5 = ($h5 + (1 << 24)) >> 25; + $h6 += $carry5; + $h5 -= $carry5 << 25; + + $carry2 = ($h2 + (1 << 25)) >> 26; + $h3 += $carry2; + $h2 -= $carry2 << 26; + $carry6 = ($h6 + (1 << 25)) >> 26; + $h7 += $carry6; + $h6 -= $carry6 << 26; + + $carry3 = ($h3 + (1 << 24)) >> 25; + $h4 += $carry3; + $h3 -= $carry3 << 25; + $carry7 = ($h7 + (1 << 24)) >> 25; + $h8 += $carry7; + $h7 -= $carry7 << 25; + + $carry4 = ($h4 + (1 << 25)) >> 26; + $h5 += $carry4; + $h4 -= $carry4 << 26; + $carry8 = ($h8 + (1 << 25)) >> 26; + $h9 += $carry8; + $h8 -= $carry8 << 26; + + $carry9 = ($h9 + (1 << 24)) >> 25; + $h0 += self::mul($carry9, 19, 5); + $h9 -= $carry9 << 25; + + $carry0 = ($h0 + (1 << 25)) >> 26; + $h1 += $carry0; + $h0 -= $carry0 << 26; + + return self::fe_normalize( + ParagonIE_Sodium_Core_Curve25519_Fe::fromArray( + array( + (int) $h0, + (int) $h1, + (int) $h2, + (int) $h3, + (int) $h4, + (int) $h5, + (int) $h6, + (int) $h7, + (int) $h8, + (int) $h9 + ) + ) + ); + } + + + /** + * Square and double a field element + * + * h = 2 * f * f + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $f + * @return ParagonIE_Sodium_Core_Curve25519_Fe + */ + public static function fe_sq2(ParagonIE_Sodium_Core_Curve25519_Fe $f) + { + $f = self::fe_normalize($f); + $f0 = (int) $f[0]; + $f1 = (int) $f[1]; + $f2 = (int) $f[2]; + $f3 = (int) $f[3]; + $f4 = (int) $f[4]; + $f5 = (int) $f[5]; + $f6 = (int) $f[6]; + $f7 = (int) $f[7]; + $f8 = (int) $f[8]; + $f9 = (int) $f[9]; + + $f0_2 = $f0 << 1; + $f1_2 = $f1 << 1; + $f2_2 = $f2 << 1; + $f3_2 = $f3 << 1; + $f4_2 = $f4 << 1; + $f5_2 = $f5 << 1; + $f6_2 = $f6 << 1; + $f7_2 = $f7 << 1; + $f5_38 = self::mul($f5, 38, 6); /* 1.959375*2^30 */ + $f6_19 = self::mul($f6, 19, 5); /* 1.959375*2^30 */ + $f7_38 = self::mul($f7, 38, 6); /* 1.959375*2^30 */ + $f8_19 = self::mul($f8, 19, 5); /* 1.959375*2^30 */ + $f9_38 = self::mul($f9, 38, 6); /* 1.959375*2^30 */ + $f0f0 = self::mul($f0, $f0, 24); + $f0f1_2 = self::mul($f0_2, $f1, 24); + $f0f2_2 = self::mul($f0_2, $f2, 24); + $f0f3_2 = self::mul($f0_2, $f3, 24); + $f0f4_2 = self::mul($f0_2, $f4, 24); + $f0f5_2 = self::mul($f0_2, $f5, 24); + $f0f6_2 = self::mul($f0_2, $f6, 24); + $f0f7_2 = self::mul($f0_2, $f7, 24); + $f0f8_2 = self::mul($f0_2, $f8, 24); + $f0f9_2 = self::mul($f0_2, $f9, 24); + $f1f1_2 = self::mul($f1_2, $f1, 24); + $f1f2_2 = self::mul($f1_2, $f2, 24); + $f1f3_4 = self::mul($f1_2, $f3_2, 24); + $f1f4_2 = self::mul($f1_2, $f4, 24); + $f1f5_4 = self::mul($f1_2, $f5_2, 24); + $f1f6_2 = self::mul($f1_2, $f6, 24); + $f1f7_4 = self::mul($f1_2, $f7_2, 24); + $f1f8_2 = self::mul($f1_2, $f8, 24); + $f1f9_76 = self::mul($f9_38, $f1_2, 24); + $f2f2 = self::mul($f2, $f2, 24); + $f2f3_2 = self::mul($f2_2, $f3, 24); + $f2f4_2 = self::mul($f2_2, $f4, 24); + $f2f5_2 = self::mul($f2_2, $f5, 24); + $f2f6_2 = self::mul($f2_2, $f6, 24); + $f2f7_2 = self::mul($f2_2, $f7, 24); + $f2f8_38 = self::mul($f8_19, $f2_2, 25); + $f2f9_38 = self::mul($f9_38, $f2, 24); + $f3f3_2 = self::mul($f3_2, $f3, 24); + $f3f4_2 = self::mul($f3_2, $f4, 24); + $f3f5_4 = self::mul($f3_2, $f5_2, 24); + $f3f6_2 = self::mul($f3_2, $f6, 24); + $f3f7_76 = self::mul($f7_38, $f3_2, 24); + $f3f8_38 = self::mul($f8_19, $f3_2, 24); + $f3f9_76 = self::mul($f9_38, $f3_2, 24); + $f4f4 = self::mul($f4, $f4, 24); + $f4f5_2 = self::mul($f4_2, $f5, 24); + $f4f6_38 = self::mul($f6_19, $f4_2, 25); + $f4f7_38 = self::mul($f7_38, $f4, 24); + $f4f8_38 = self::mul($f8_19, $f4_2, 25); + $f4f9_38 = self::mul($f9_38, $f4, 24); + $f5f5_38 = self::mul($f5_38, $f5, 24); + $f5f6_38 = self::mul($f6_19, $f5_2, 24); + $f5f7_76 = self::mul($f7_38, $f5_2, 24); + $f5f8_38 = self::mul($f8_19, $f5_2, 24); + $f5f9_76 = self::mul($f9_38, $f5_2, 24); + $f6f6_19 = self::mul($f6_19, $f6, 24); + $f6f7_38 = self::mul($f7_38, $f6, 24); + $f6f8_38 = self::mul($f8_19, $f6_2, 25); + $f6f9_38 = self::mul($f9_38, $f6, 24); + $f7f7_38 = self::mul($f7_38, $f7, 24); + $f7f8_38 = self::mul($f8_19, $f7_2, 24); + $f7f9_76 = self::mul($f9_38, $f7_2, 24); + $f8f8_19 = self::mul($f8_19, $f8, 24); + $f8f9_38 = self::mul($f9_38, $f8, 24); + $f9f9_38 = self::mul($f9_38, $f9, 24); + + $h0 = (int) ($f0f0 + $f1f9_76 + $f2f8_38 + $f3f7_76 + $f4f6_38 + $f5f5_38) << 1; + $h1 = (int) ($f0f1_2 + $f2f9_38 + $f3f8_38 + $f4f7_38 + $f5f6_38) << 1; + $h2 = (int) ($f0f2_2 + $f1f1_2 + $f3f9_76 + $f4f8_38 + $f5f7_76 + $f6f6_19) << 1; + $h3 = (int) ($f0f3_2 + $f1f2_2 + $f4f9_38 + $f5f8_38 + $f6f7_38) << 1; + $h4 = (int) ($f0f4_2 + $f1f3_4 + $f2f2 + $f5f9_76 + $f6f8_38 + $f7f7_38) << 1; + $h5 = (int) ($f0f5_2 + $f1f4_2 + $f2f3_2 + $f6f9_38 + $f7f8_38) << 1; + $h6 = (int) ($f0f6_2 + $f1f5_4 + $f2f4_2 + $f3f3_2 + $f7f9_76 + $f8f8_19) << 1; + $h7 = (int) ($f0f7_2 + $f1f6_2 + $f2f5_2 + $f3f4_2 + $f8f9_38) << 1; + $h8 = (int) ($f0f8_2 + $f1f7_4 + $f2f6_2 + $f3f5_4 + $f4f4 + $f9f9_38) << 1; + $h9 = (int) ($f0f9_2 + $f1f8_2 + $f2f7_2 + $f3f6_2 + $f4f5_2) << 1; + + $carry0 = ($h0 + (1 << 25)) >> 26; + $h1 += $carry0; + $h0 -= $carry0 << 26; + $carry4 = ($h4 + (1 << 25)) >> 26; + $h5 += $carry4; + $h4 -= $carry4 << 26; + + $carry1 = ($h1 + (1 << 24)) >> 25; + $h2 += $carry1; + $h1 -= $carry1 << 25; + $carry5 = ($h5 + (1 << 24)) >> 25; + $h6 += $carry5; + $h5 -= $carry5 << 25; + + $carry2 = ($h2 + (1 << 25)) >> 26; + $h3 += $carry2; + $h2 -= $carry2 << 26; + $carry6 = ($h6 + (1 << 25)) >> 26; + $h7 += $carry6; + $h6 -= $carry6 << 26; + + $carry3 = ($h3 + (1 << 24)) >> 25; + $h4 += $carry3; + $h3 -= $carry3 << 25; + $carry7 = ($h7 + (1 << 24)) >> 25; + $h8 += $carry7; + $h7 -= $carry7 << 25; + + $carry4 = ($h4 + (1 << 25)) >> 26; + $h5 += $carry4; + $h4 -= $carry4 << 26; + $carry8 = ($h8 + (1 << 25)) >> 26; + $h9 += $carry8; + $h8 -= $carry8 << 26; + + $carry9 = ($h9 + (1 << 24)) >> 25; + $h0 += self::mul($carry9, 19, 5); + $h9 -= $carry9 << 25; + + $carry0 = ($h0 + (1 << 25)) >> 26; + $h1 += $carry0; + $h0 -= $carry0 << 26; + + return self::fe_normalize( + ParagonIE_Sodium_Core_Curve25519_Fe::fromArray( + array( + (int) $h0, + (int) $h1, + (int) $h2, + (int) $h3, + (int) $h4, + (int) $h5, + (int) $h6, + (int) $h7, + (int) $h8, + (int) $h9 + ) + ) + ); + } + + /** + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $Z + * @return ParagonIE_Sodium_Core_Curve25519_Fe + */ + public static function fe_invert(ParagonIE_Sodium_Core_Curve25519_Fe $Z) + { + $z = clone $Z; + $t0 = self::fe_sq($z); + $t1 = self::fe_sq($t0); + $t1 = self::fe_sq($t1); + $t1 = self::fe_mul($z, $t1); + $t0 = self::fe_mul($t0, $t1); + $t2 = self::fe_sq($t0); + $t1 = self::fe_mul($t1, $t2); + $t2 = self::fe_sq($t1); + for ($i = 1; $i < 5; ++$i) { + $t2 = self::fe_sq($t2); + } + $t1 = self::fe_mul($t2, $t1); + $t2 = self::fe_sq($t1); + for ($i = 1; $i < 10; ++$i) { + $t2 = self::fe_sq($t2); + } + $t2 = self::fe_mul($t2, $t1); + $t3 = self::fe_sq($t2); + for ($i = 1; $i < 20; ++$i) { + $t3 = self::fe_sq($t3); + } + $t2 = self::fe_mul($t3, $t2); + $t2 = self::fe_sq($t2); + for ($i = 1; $i < 10; ++$i) { + $t2 = self::fe_sq($t2); + } + $t1 = self::fe_mul($t2, $t1); + $t2 = self::fe_sq($t1); + for ($i = 1; $i < 50; ++$i) { + $t2 = self::fe_sq($t2); + } + $t2 = self::fe_mul($t2, $t1); + $t3 = self::fe_sq($t2); + for ($i = 1; $i < 100; ++$i) { + $t3 = self::fe_sq($t3); + } + $t2 = self::fe_mul($t3, $t2); + $t2 = self::fe_sq($t2); + for ($i = 1; $i < 50; ++$i) { + $t2 = self::fe_sq($t2); + } + $t1 = self::fe_mul($t2, $t1); + $t1 = self::fe_sq($t1); + for ($i = 1; $i < 5; ++$i) { + $t1 = self::fe_sq($t1); + } + return self::fe_mul($t1, $t0); + } + + /** + * @internal You should not use this directly from another application + * + * @ref https://github.com/jedisct1/libsodium/blob/68564326e1e9dc57ef03746f85734232d20ca6fb/src/libsodium/crypto_core/curve25519/ref10/curve25519_ref10.c#L1054-L1106 + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $z + * @return ParagonIE_Sodium_Core_Curve25519_Fe + */ + public static function fe_pow22523(ParagonIE_Sodium_Core_Curve25519_Fe $z) + { + $z = self::fe_normalize($z); + # fe_sq(t0, z); + # fe_sq(t1, t0); + # fe_sq(t1, t1); + # fe_mul(t1, z, t1); + # fe_mul(t0, t0, t1); + # fe_sq(t0, t0); + # fe_mul(t0, t1, t0); + # fe_sq(t1, t0); + $t0 = self::fe_sq($z); + $t1 = self::fe_sq($t0); + $t1 = self::fe_sq($t1); + $t1 = self::fe_mul($z, $t1); + $t0 = self::fe_mul($t0, $t1); + $t0 = self::fe_sq($t0); + $t0 = self::fe_mul($t1, $t0); + $t1 = self::fe_sq($t0); + + # for (i = 1; i < 5; ++i) { + # fe_sq(t1, t1); + # } + for ($i = 1; $i < 5; ++$i) { + $t1 = self::fe_sq($t1); + } + + # fe_mul(t0, t1, t0); + # fe_sq(t1, t0); + $t0 = self::fe_mul($t1, $t0); + $t1 = self::fe_sq($t0); + + # for (i = 1; i < 10; ++i) { + # fe_sq(t1, t1); + # } + for ($i = 1; $i < 10; ++$i) { + $t1 = self::fe_sq($t1); + } + + # fe_mul(t1, t1, t0); + # fe_sq(t2, t1); + $t1 = self::fe_mul($t1, $t0); + $t2 = self::fe_sq($t1); + + # for (i = 1; i < 20; ++i) { + # fe_sq(t2, t2); + # } + for ($i = 1; $i < 20; ++$i) { + $t2 = self::fe_sq($t2); + } + + # fe_mul(t1, t2, t1); + # fe_sq(t1, t1); + $t1 = self::fe_mul($t2, $t1); + $t1 = self::fe_sq($t1); + + # for (i = 1; i < 10; ++i) { + # fe_sq(t1, t1); + # } + for ($i = 1; $i < 10; ++$i) { + $t1 = self::fe_sq($t1); + } + + # fe_mul(t0, t1, t0); + # fe_sq(t1, t0); + $t0 = self::fe_mul($t1, $t0); + $t1 = self::fe_sq($t0); + + # for (i = 1; i < 50; ++i) { + # fe_sq(t1, t1); + # } + for ($i = 1; $i < 50; ++$i) { + $t1 = self::fe_sq($t1); + } + + # fe_mul(t1, t1, t0); + # fe_sq(t2, t1); + $t1 = self::fe_mul($t1, $t0); + $t2 = self::fe_sq($t1); + + # for (i = 1; i < 100; ++i) { + # fe_sq(t2, t2); + # } + for ($i = 1; $i < 100; ++$i) { + $t2 = self::fe_sq($t2); + } + + # fe_mul(t1, t2, t1); + # fe_sq(t1, t1); + $t1 = self::fe_mul($t2, $t1); + $t1 = self::fe_sq($t1); + + # for (i = 1; i < 50; ++i) { + # fe_sq(t1, t1); + # } + for ($i = 1; $i < 50; ++$i) { + $t1 = self::fe_sq($t1); + } + + # fe_mul(t0, t1, t0); + # fe_sq(t0, t0); + # fe_sq(t0, t0); + # fe_mul(out, t0, z); + $t0 = self::fe_mul($t1, $t0); + $t0 = self::fe_sq($t0); + $t0 = self::fe_sq($t0); + return self::fe_mul($t0, $z); + } + + /** + * Subtract two field elements. + * + * h = f - g + * + * Preconditions: + * |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. + * |g| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. + * + * Postconditions: + * |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $f + * @param ParagonIE_Sodium_Core_Curve25519_Fe $g + * @return ParagonIE_Sodium_Core_Curve25519_Fe + * @psalm-suppress MixedOperand + */ + public static function fe_sub(ParagonIE_Sodium_Core_Curve25519_Fe $f, ParagonIE_Sodium_Core_Curve25519_Fe $g) + { + return self::fe_normalize( + ParagonIE_Sodium_Core_Curve25519_Fe::fromArray( + array( + (int) ($f[0] - $g[0]), + (int) ($f[1] - $g[1]), + (int) ($f[2] - $g[2]), + (int) ($f[3] - $g[3]), + (int) ($f[4] - $g[4]), + (int) ($f[5] - $g[5]), + (int) ($f[6] - $g[6]), + (int) ($f[7] - $g[7]), + (int) ($f[8] - $g[8]), + (int) ($f[9] - $g[9]) + ) + ) + ); + } + + /** + * Add two group elements. + * + * r = p + q + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p + * @param ParagonIE_Sodium_Core_Curve25519_Ge_Cached $q + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 + */ + public static function ge_add( + ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p, + ParagonIE_Sodium_Core_Curve25519_Ge_Cached $q + ) { + $r = new ParagonIE_Sodium_Core_Curve25519_Ge_P1p1(); + $r->X = self::fe_add($p->Y, $p->X); + $r->Y = self::fe_sub($p->Y, $p->X); + $r->Z = self::fe_mul($r->X, $q->YplusX); + $r->Y = self::fe_mul($r->Y, $q->YminusX); + $r->T = self::fe_mul($q->T2d, $p->T); + $r->X = self::fe_mul($p->Z, $q->Z); + $t0 = self::fe_add($r->X, $r->X); + $r->X = self::fe_sub($r->Z, $r->Y); + $r->Y = self::fe_add($r->Z, $r->Y); + $r->Z = self::fe_add($t0, $r->T); + $r->T = self::fe_sub($t0, $r->T); + return $r; + } + + /** + * @internal You should not use this directly from another application + * + * @ref https://github.com/jedisct1/libsodium/blob/157c4a80c13b117608aeae12178b2d38825f9f8f/src/libsodium/crypto_core/curve25519/ref10/curve25519_ref10.c#L1185-L1215 + * @param string $a + * @return array<int, mixed> + * @throws SodiumException + * @throws TypeError + */ + public static function slide($a) + { + if (self::strlen($a) < 256) { + if (self::strlen($a) < 16) { + $a = str_pad($a, 256, '0', STR_PAD_RIGHT); + } + } + /** @var array<int, int> $r */ + $r = array(); + + /** @var int $i */ + for ($i = 0; $i < 256; ++$i) { + $r[$i] = (int) ( + 1 & ( + self::chrToInt($a[(int) ($i >> 3)]) + >> + ($i & 7) + ) + ); + } + + for ($i = 0;$i < 256;++$i) { + if ($r[$i]) { + for ($b = 1;$b <= 6 && $i + $b < 256;++$b) { + if ($r[$i + $b]) { + if ($r[$i] + ($r[$i + $b] << $b) <= 15) { + $r[$i] += $r[$i + $b] << $b; + $r[$i + $b] = 0; + } elseif ($r[$i] - ($r[$i + $b] << $b) >= -15) { + $r[$i] -= $r[$i + $b] << $b; + for ($k = $i + $b; $k < 256; ++$k) { + if (!$r[$k]) { + $r[$k] = 1; + break; + } + $r[$k] = 0; + } + } else { + break; + } + } + } + } + } + return $r; + } + + /** + * @internal You should not use this directly from another application + * + * @param string $s + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P3 + * @throws SodiumException + * @throws TypeError + */ + public static function ge_frombytes_negate_vartime($s) + { + static $d = null; + if (!$d) { + $d = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$d); + } + + # fe_frombytes(h->Y,s); + # fe_1(h->Z); + $h = new ParagonIE_Sodium_Core_Curve25519_Ge_P3( + self::fe_0(), + self::fe_frombytes($s), + self::fe_1() + ); + + # fe_sq(u,h->Y); + # fe_mul(v,u,d); + # fe_sub(u,u,h->Z); /* u = y^2-1 */ + # fe_add(v,v,h->Z); /* v = dy^2+1 */ + $u = self::fe_sq($h->Y); + /** @var ParagonIE_Sodium_Core_Curve25519_Fe $d */ + $v = self::fe_mul($u, $d); + $u = self::fe_sub($u, $h->Z); /* u = y^2 - 1 */ + $v = self::fe_add($v, $h->Z); /* v = dy^2 + 1 */ + + # fe_sq(v3,v); + # fe_mul(v3,v3,v); /* v3 = v^3 */ + # fe_sq(h->X,v3); + # fe_mul(h->X,h->X,v); + # fe_mul(h->X,h->X,u); /* x = uv^7 */ + $v3 = self::fe_sq($v); + $v3 = self::fe_mul($v3, $v); /* v3 = v^3 */ + $h->X = self::fe_sq($v3); + $h->X = self::fe_mul($h->X, $v); + $h->X = self::fe_mul($h->X, $u); /* x = uv^7 */ + + # fe_pow22523(h->X,h->X); /* x = (uv^7)^((q-5)/8) */ + # fe_mul(h->X,h->X,v3); + # fe_mul(h->X,h->X,u); /* x = uv^3(uv^7)^((q-5)/8) */ + $h->X = self::fe_pow22523($h->X); /* x = (uv^7)^((q-5)/8) */ + $h->X = self::fe_mul($h->X, $v3); + $h->X = self::fe_mul($h->X, $u); /* x = uv^3(uv^7)^((q-5)/8) */ + + # fe_sq(vxx,h->X); + # fe_mul(vxx,vxx,v); + # fe_sub(check,vxx,u); /* vx^2-u */ + $vxx = self::fe_sq($h->X); + $vxx = self::fe_mul($vxx, $v); + $check = self::fe_sub($vxx, $u); /* vx^2 - u */ + + # if (fe_isnonzero(check)) { + # fe_add(check,vxx,u); /* vx^2+u */ + # if (fe_isnonzero(check)) { + # return -1; + # } + # fe_mul(h->X,h->X,sqrtm1); + # } + if (self::fe_isnonzero($check)) { + $check = self::fe_add($vxx, $u); /* vx^2 + u */ + if (self::fe_isnonzero($check)) { + throw new RangeException('Internal check failed.'); + } + $h->X = self::fe_mul( + $h->X, + ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$sqrtm1) + ); + } + + # if (fe_isnegative(h->X) == (s[31] >> 7)) { + # fe_neg(h->X,h->X); + # } + $i = self::chrToInt($s[31]); + if (self::fe_isnegative($h->X) === ($i >> 7)) { + $h->X = self::fe_neg($h->X); + } + + # fe_mul(h->T,h->X,h->Y); + $h->T = self::fe_mul($h->X, $h->Y); + return $h; + } + + /** + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $R + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p + * @param ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $q + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 + */ + public static function ge_madd( + ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $R, + ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p, + ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $q + ) { + $r = clone $R; + $r->X = self::fe_add($p->Y, $p->X); + $r->Y = self::fe_sub($p->Y, $p->X); + $r->Z = self::fe_mul($r->X, $q->yplusx); + $r->Y = self::fe_mul($r->Y, $q->yminusx); + $r->T = self::fe_mul($q->xy2d, $p->T); + $t0 = self::fe_add(clone $p->Z, clone $p->Z); + $r->X = self::fe_sub($r->Z, $r->Y); + $r->Y = self::fe_add($r->Z, $r->Y); + $r->Z = self::fe_add($t0, $r->T); + $r->T = self::fe_sub($t0, $r->T); + + return $r; + } + + /** + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $R + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p + * @param ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $q + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 + */ + public static function ge_msub( + ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $R, + ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p, + ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $q + ) { + $r = clone $R; + + $r->X = self::fe_add($p->Y, $p->X); + $r->Y = self::fe_sub($p->Y, $p->X); + $r->Z = self::fe_mul($r->X, $q->yminusx); + $r->Y = self::fe_mul($r->Y, $q->yplusx); + $r->T = self::fe_mul($q->xy2d, $p->T); + $t0 = self::fe_add($p->Z, $p->Z); + $r->X = self::fe_sub($r->Z, $r->Y); + $r->Y = self::fe_add($r->Z, $r->Y); + $r->Z = self::fe_sub($t0, $r->T); + $r->T = self::fe_add($t0, $r->T); + + return $r; + } + + /** + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $p + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P2 + */ + public static function ge_p1p1_to_p2(ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $p) + { + $r = new ParagonIE_Sodium_Core_Curve25519_Ge_P2(); + $r->X = self::fe_mul($p->X, $p->T); + $r->Y = self::fe_mul($p->Y, $p->Z); + $r->Z = self::fe_mul($p->Z, $p->T); + return $r; + } + + /** + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $p + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P3 + */ + public static function ge_p1p1_to_p3(ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $p) + { + $r = new ParagonIE_Sodium_Core_Curve25519_Ge_P3(); + $r->X = self::fe_mul($p->X, $p->T); + $r->Y = self::fe_mul($p->Y, $p->Z); + $r->Z = self::fe_mul($p->Z, $p->T); + $r->T = self::fe_mul($p->X, $p->Y); + return $r; + } + + /** + * @internal You should not use this directly from another application + * + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P2 + */ + public static function ge_p2_0() + { + return new ParagonIE_Sodium_Core_Curve25519_Ge_P2( + self::fe_0(), + self::fe_1(), + self::fe_1() + ); + } + + /** + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P2 $p + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 + */ + public static function ge_p2_dbl(ParagonIE_Sodium_Core_Curve25519_Ge_P2 $p) + { + $r = new ParagonIE_Sodium_Core_Curve25519_Ge_P1p1(); + + $r->X = self::fe_sq($p->X); + $r->Z = self::fe_sq($p->Y); + $r->T = self::fe_sq2($p->Z); + $r->Y = self::fe_add($p->X, $p->Y); + $t0 = self::fe_sq($r->Y); + $r->Y = self::fe_add($r->Z, $r->X); + $r->Z = self::fe_sub($r->Z, $r->X); + $r->X = self::fe_sub($t0, $r->Y); + $r->T = self::fe_sub($r->T, $r->Z); + + return $r; + } + + /** + * @internal You should not use this directly from another application + * + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P3 + */ + public static function ge_p3_0() + { + return new ParagonIE_Sodium_Core_Curve25519_Ge_P3( + self::fe_0(), + self::fe_1(), + self::fe_1(), + self::fe_0() + ); + } + + /** + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p + * @return ParagonIE_Sodium_Core_Curve25519_Ge_Cached + */ + public static function ge_p3_to_cached(ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p) + { + static $d2 = null; + if ($d2 === null) { + $d2 = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$d2); + } + /** @var ParagonIE_Sodium_Core_Curve25519_Fe $d2 */ + $r = new ParagonIE_Sodium_Core_Curve25519_Ge_Cached(); + $r->YplusX = self::fe_add($p->Y, $p->X); + $r->YminusX = self::fe_sub($p->Y, $p->X); + $r->Z = self::fe_copy($p->Z); + $r->T2d = self::fe_mul($p->T, $d2); + return $r; + } + + /** + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P2 + */ + public static function ge_p3_to_p2(ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p) + { + return new ParagonIE_Sodium_Core_Curve25519_Ge_P2( + self::fe_copy($p->X), + self::fe_copy($p->Y), + self::fe_copy($p->Z) + ); + } + + /** + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $h + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function ge_p3_tobytes(ParagonIE_Sodium_Core_Curve25519_Ge_P3 $h) + { + $recip = self::fe_invert($h->Z); + $x = self::fe_mul($h->X, $recip); + $y = self::fe_mul($h->Y, $recip); + $s = self::fe_tobytes($y); + $s[31] = self::intToChr( + self::chrToInt($s[31]) ^ (self::fe_isnegative($x) << 7) + ); + return $s; + } + + /** + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 + */ + public static function ge_p3_dbl(ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p) + { + $q = self::ge_p3_to_p2($p); + return self::ge_p2_dbl($q); + } + + /** + * @return ParagonIE_Sodium_Core_Curve25519_Ge_Precomp + */ + public static function ge_precomp_0() + { + return new ParagonIE_Sodium_Core_Curve25519_Ge_Precomp( + self::fe_1(), + self::fe_1(), + self::fe_0() + ); + } + + /** + * @internal You should not use this directly from another application + * + * @param int $b + * @param int $c + * @return int + */ + public static function equal($b, $c) + { + return (int) ((($b ^ $c) - 1) >> 31) & 1; + } + + /** + * @internal You should not use this directly from another application + * + * @param int|string $char + * @return int (1 = yes, 0 = no) + * @throws SodiumException + * @throws TypeError + */ + public static function negative($char) + { + if (is_int($char)) { + return ($char >> 63) & 1; + } + $x = self::chrToInt(self::substr($char, 0, 1)); + return (int) ($x >> 63); + } + + /** + * Conditional move + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $t + * @param ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $u + * @param int $b + * @return ParagonIE_Sodium_Core_Curve25519_Ge_Precomp + */ + public static function cmov( + ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $t, + ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $u, + $b + ) { + if (!is_int($b)) { + throw new InvalidArgumentException('Expected an integer.'); + } + return new ParagonIE_Sodium_Core_Curve25519_Ge_Precomp( + self::fe_cmov($t->yplusx, $u->yplusx, $b), + self::fe_cmov($t->yminusx, $u->yminusx, $b), + self::fe_cmov($t->xy2d, $u->xy2d, $b) + ); + } + + /** + * @param ParagonIE_Sodium_Core_Curve25519_Ge_Cached $t + * @param ParagonIE_Sodium_Core_Curve25519_Ge_Cached $u + * @param int $b + * @return ParagonIE_Sodium_Core_Curve25519_Ge_Cached + */ + public static function ge_cmov_cached( + ParagonIE_Sodium_Core_Curve25519_Ge_Cached $t, + ParagonIE_Sodium_Core_Curve25519_Ge_Cached $u, + $b + ) { + $b &= 1; + $ret = new ParagonIE_Sodium_Core_Curve25519_Ge_Cached(); + $ret->YplusX = self::fe_cmov($t->YplusX, $u->YplusX, $b); + $ret->YminusX = self::fe_cmov($t->YminusX, $u->YminusX, $b); + $ret->Z = self::fe_cmov($t->Z, $u->Z, $b); + $ret->T2d = self::fe_cmov($t->T2d, $u->T2d, $b); + return $ret; + } + + /** + * @param ParagonIE_Sodium_Core_Curve25519_Ge_Cached[] $cached + * @param int $b + * @return ParagonIE_Sodium_Core_Curve25519_Ge_Cached + * @throws SodiumException + */ + public static function ge_cmov8_cached(array $cached, $b) + { + // const unsigned char bnegative = negative(b); + // const unsigned char babs = b - (((-bnegative) & b) * ((signed char) 1 << 1)); + $bnegative = self::negative($b); + $babs = $b - (((-$bnegative) & $b) << 1); + + // ge25519_cached_0(t); + $t = new ParagonIE_Sodium_Core_Curve25519_Ge_Cached( + self::fe_1(), + self::fe_1(), + self::fe_1(), + self::fe_0() + ); + + // ge25519_cmov_cached(t, &cached[0], equal(babs, 1)); + // ge25519_cmov_cached(t, &cached[1], equal(babs, 2)); + // ge25519_cmov_cached(t, &cached[2], equal(babs, 3)); + // ge25519_cmov_cached(t, &cached[3], equal(babs, 4)); + // ge25519_cmov_cached(t, &cached[4], equal(babs, 5)); + // ge25519_cmov_cached(t, &cached[5], equal(babs, 6)); + // ge25519_cmov_cached(t, &cached[6], equal(babs, 7)); + // ge25519_cmov_cached(t, &cached[7], equal(babs, 8)); + for ($x = 0; $x < 8; ++$x) { + $t = self::ge_cmov_cached($t, $cached[$x], self::equal($babs, $x + 1)); + } + + // fe25519_copy(minust.YplusX, t->YminusX); + // fe25519_copy(minust.YminusX, t->YplusX); + // fe25519_copy(minust.Z, t->Z); + // fe25519_neg(minust.T2d, t->T2d); + $minust = new ParagonIE_Sodium_Core_Curve25519_Ge_Cached( + self::fe_copy($t->YminusX), + self::fe_copy($t->YplusX), + self::fe_copy($t->Z), + self::fe_neg($t->T2d) + ); + return self::ge_cmov_cached($t, $minust, $bnegative); + } + + /** + * @internal You should not use this directly from another application + * + * @param int $pos + * @param int $b + * @return ParagonIE_Sodium_Core_Curve25519_Ge_Precomp + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayOffset + */ + public static function ge_select($pos = 0, $b = 0) + { + static $base = null; + if ($base === null) { + $base = array(); + /** @var int $i */ + foreach (self::$base as $i => $bas) { + for ($j = 0; $j < 8; ++$j) { + $base[$i][$j] = new ParagonIE_Sodium_Core_Curve25519_Ge_Precomp( + ParagonIE_Sodium_Core_Curve25519_Fe::fromArray($bas[$j][0]), + ParagonIE_Sodium_Core_Curve25519_Fe::fromArray($bas[$j][1]), + ParagonIE_Sodium_Core_Curve25519_Fe::fromArray($bas[$j][2]) + ); + } + } + } + /** @var array<int, array<int, ParagonIE_Sodium_Core_Curve25519_Ge_Precomp>> $base */ + if (!is_int($pos)) { + throw new InvalidArgumentException('Position must be an integer'); + } + if ($pos < 0 || $pos > 31) { + throw new RangeException('Position is out of range [0, 31]'); + } + + $bnegative = self::negative($b); + $babs = $b - (((-$bnegative) & $b) << 1); + + $t = self::ge_precomp_0(); + for ($i = 0; $i < 8; ++$i) { + $t = self::cmov( + $t, + $base[$pos][$i], + self::equal($babs, $i + 1) + ); + } + $minusT = new ParagonIE_Sodium_Core_Curve25519_Ge_Precomp( + self::fe_copy($t->yminusx), + self::fe_copy($t->yplusx), + self::fe_neg($t->xy2d) + ); + return self::cmov($t, $minusT, $bnegative); + } + + /** + * Subtract two group elements. + * + * r = p - q + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p + * @param ParagonIE_Sodium_Core_Curve25519_Ge_Cached $q + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 + */ + public static function ge_sub( + ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p, + ParagonIE_Sodium_Core_Curve25519_Ge_Cached $q + ) { + $r = new ParagonIE_Sodium_Core_Curve25519_Ge_P1p1(); + + $r->X = self::fe_add($p->Y, $p->X); + $r->Y = self::fe_sub($p->Y, $p->X); + $r->Z = self::fe_mul($r->X, $q->YminusX); + $r->Y = self::fe_mul($r->Y, $q->YplusX); + $r->T = self::fe_mul($q->T2d, $p->T); + $r->X = self::fe_mul($p->Z, $q->Z); + $t0 = self::fe_add($r->X, $r->X); + $r->X = self::fe_sub($r->Z, $r->Y); + $r->Y = self::fe_add($r->Z, $r->Y); + $r->Z = self::fe_sub($t0, $r->T); + $r->T = self::fe_add($t0, $r->T); + + return $r; + } + + /** + * Convert a group element to a byte string. + * + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P2 $h + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function ge_tobytes(ParagonIE_Sodium_Core_Curve25519_Ge_P2 $h) + { + $recip = self::fe_invert($h->Z); + $x = self::fe_mul($h->X, $recip); + $y = self::fe_mul($h->Y, $recip); + $s = self::fe_tobytes($y); + $s[31] = self::intToChr( + self::chrToInt($s[31]) ^ (self::fe_isnegative($x) << 7) + ); + return $s; + } + + /** + * @internal You should not use this directly from another application + * + * @param string $a + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $A + * @param string $b + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P2 + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedArrayAccess + */ + public static function ge_double_scalarmult_vartime( + $a, + ParagonIE_Sodium_Core_Curve25519_Ge_P3 $A, + $b + ) { + /** @var array<int, ParagonIE_Sodium_Core_Curve25519_Ge_Cached> $Ai */ + $Ai = array(); + + /** @var array<int, ParagonIE_Sodium_Core_Curve25519_Ge_Precomp> $Bi */ + static $Bi = array(); + if (!$Bi) { + for ($i = 0; $i < 8; ++$i) { + $Bi[$i] = new ParagonIE_Sodium_Core_Curve25519_Ge_Precomp( + ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$base2[$i][0]), + ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$base2[$i][1]), + ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$base2[$i][2]) + ); + } + } + for ($i = 0; $i < 8; ++$i) { + $Ai[$i] = new ParagonIE_Sodium_Core_Curve25519_Ge_Cached( + self::fe_0(), + self::fe_0(), + self::fe_0(), + self::fe_0() + ); + } + + # slide(aslide,a); + # slide(bslide,b); + /** @var array<int, int> $aslide */ + $aslide = self::slide($a); + /** @var array<int, int> $bslide */ + $bslide = self::slide($b); + + # ge_p3_to_cached(&Ai[0],A); + # ge_p3_dbl(&t,A); ge_p1p1_to_p3(&A2,&t); + $Ai[0] = self::ge_p3_to_cached($A); + $t = self::ge_p3_dbl($A); + $A2 = self::ge_p1p1_to_p3($t); + + # ge_add(&t,&A2,&Ai[0]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[1],&u); + # ge_add(&t,&A2,&Ai[1]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[2],&u); + # ge_add(&t,&A2,&Ai[2]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[3],&u); + # ge_add(&t,&A2,&Ai[3]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[4],&u); + # ge_add(&t,&A2,&Ai[4]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[5],&u); + # ge_add(&t,&A2,&Ai[5]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[6],&u); + # ge_add(&t,&A2,&Ai[6]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[7],&u); + for ($i = 0; $i < 7; ++$i) { + $t = self::ge_add($A2, $Ai[$i]); + $u = self::ge_p1p1_to_p3($t); + $Ai[$i + 1] = self::ge_p3_to_cached($u); + } + + # ge_p2_0(r); + $r = self::ge_p2_0(); + + # for (i = 255;i >= 0;--i) { + # if (aslide[i] || bslide[i]) break; + # } + $i = 255; + for (; $i >= 0; --$i) { + if ($aslide[$i] || $bslide[$i]) { + break; + } + } + + # for (;i >= 0;--i) { + for (; $i >= 0; --$i) { + # ge_p2_dbl(&t,r); + $t = self::ge_p2_dbl($r); + + # if (aslide[i] > 0) { + if ($aslide[$i] > 0) { + # ge_p1p1_to_p3(&u,&t); + # ge_add(&t,&u,&Ai[aslide[i]/2]); + $u = self::ge_p1p1_to_p3($t); + $t = self::ge_add( + $u, + $Ai[(int) floor($aslide[$i] / 2)] + ); + # } else if (aslide[i] < 0) { + } elseif ($aslide[$i] < 0) { + # ge_p1p1_to_p3(&u,&t); + # ge_sub(&t,&u,&Ai[(-aslide[i])/2]); + $u = self::ge_p1p1_to_p3($t); + $t = self::ge_sub( + $u, + $Ai[(int) floor(-$aslide[$i] / 2)] + ); + } + + # if (bslide[i] > 0) { + if ($bslide[$i] > 0) { + /** @var int $index */ + $index = (int) floor($bslide[$i] / 2); + # ge_p1p1_to_p3(&u,&t); + # ge_madd(&t,&u,&Bi[bslide[i]/2]); + $u = self::ge_p1p1_to_p3($t); + $t = self::ge_madd($t, $u, $Bi[$index]); + # } else if (bslide[i] < 0) { + } elseif ($bslide[$i] < 0) { + /** @var int $index */ + $index = (int) floor(-$bslide[$i] / 2); + # ge_p1p1_to_p3(&u,&t); + # ge_msub(&t,&u,&Bi[(-bslide[i])/2]); + $u = self::ge_p1p1_to_p3($t); + $t = self::ge_msub($t, $u, $Bi[$index]); + } + # ge_p1p1_to_p2(r,&t); + $r = self::ge_p1p1_to_p2($t); + } + return $r; + } + + /** + * @internal You should not use this directly from another application + * + * @param string $a + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P3 + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedOperand + */ + public static function ge_scalarmult($a, $p) + { + $e = array_fill(0, 64, 0); + + /** @var ParagonIE_Sodium_Core_Curve25519_Ge_Cached[] $pi */ + $pi = array(); + + // ge25519_p3_to_cached(&pi[1 - 1], p); /* p */ + $pi[0] = self::ge_p3_to_cached($p); + + // ge25519_p3_dbl(&t2, p); + // ge25519_p1p1_to_p3(&p2, &t2); + // ge25519_p3_to_cached(&pi[2 - 1], &p2); /* 2p = 2*p */ + $t2 = self::ge_p3_dbl($p); + $p2 = self::ge_p1p1_to_p3($t2); + $pi[1] = self::ge_p3_to_cached($p2); + + // ge25519_add_cached(&t3, p, &pi[2 - 1]); + // ge25519_p1p1_to_p3(&p3, &t3); + // ge25519_p3_to_cached(&pi[3 - 1], &p3); /* 3p = 2p+p */ + $t3 = self::ge_add($p, $pi[1]); + $p3 = self::ge_p1p1_to_p3($t3); + $pi[2] = self::ge_p3_to_cached($p3); + + // ge25519_p3_dbl(&t4, &p2); + // ge25519_p1p1_to_p3(&p4, &t4); + // ge25519_p3_to_cached(&pi[4 - 1], &p4); /* 4p = 2*2p */ + $t4 = self::ge_p3_dbl($p2); + $p4 = self::ge_p1p1_to_p3($t4); + $pi[3] = self::ge_p3_to_cached($p4); + + // ge25519_add_cached(&t5, p, &pi[4 - 1]); + // ge25519_p1p1_to_p3(&p5, &t5); + // ge25519_p3_to_cached(&pi[5 - 1], &p5); /* 5p = 4p+p */ + $t5 = self::ge_add($p, $pi[3]); + $p5 = self::ge_p1p1_to_p3($t5); + $pi[4] = self::ge_p3_to_cached($p5); + + // ge25519_p3_dbl(&t6, &p3); + // ge25519_p1p1_to_p3(&p6, &t6); + // ge25519_p3_to_cached(&pi[6 - 1], &p6); /* 6p = 2*3p */ + $t6 = self::ge_p3_dbl($p3); + $p6 = self::ge_p1p1_to_p3($t6); + $pi[5] = self::ge_p3_to_cached($p6); + + // ge25519_add_cached(&t7, p, &pi[6 - 1]); + // ge25519_p1p1_to_p3(&p7, &t7); + // ge25519_p3_to_cached(&pi[7 - 1], &p7); /* 7p = 6p+p */ + $t7 = self::ge_add($p, $pi[5]); + $p7 = self::ge_p1p1_to_p3($t7); + $pi[6] = self::ge_p3_to_cached($p7); + + // ge25519_p3_dbl(&t8, &p4); + // ge25519_p1p1_to_p3(&p8, &t8); + // ge25519_p3_to_cached(&pi[8 - 1], &p8); /* 8p = 2*4p */ + $t8 = self::ge_p3_dbl($p4); + $p8 = self::ge_p1p1_to_p3($t8); + $pi[7] = self::ge_p3_to_cached($p8); + + + // for (i = 0; i < 32; ++i) { + // e[2 * i + 0] = (a[i] >> 0) & 15; + // e[2 * i + 1] = (a[i] >> 4) & 15; + // } + for ($i = 0; $i < 32; ++$i) { + $e[($i << 1) ] = self::chrToInt($a[$i]) & 15; + $e[($i << 1) + 1] = (self::chrToInt($a[$i]) >> 4) & 15; + } + // /* each e[i] is between 0 and 15 */ + // /* e[63] is between 0 and 7 */ + + // carry = 0; + // for (i = 0; i < 63; ++i) { + // e[i] += carry; + // carry = e[i] + 8; + // carry >>= 4; + // e[i] -= carry * ((signed char) 1 << 4); + // } + $carry = 0; + for ($i = 0; $i < 63; ++$i) { + $e[$i] += $carry; + $carry = $e[$i] + 8; + $carry >>= 4; + $e[$i] -= $carry << 4; + } + // e[63] += carry; + // /* each e[i] is between -8 and 8 */ + $e[63] += $carry; + + // ge25519_p3_0(h); + $h = self::ge_p3_0(); + + // for (i = 63; i != 0; i--) { + for ($i = 63; $i != 0; --$i) { + // ge25519_cmov8_cached(&t, pi, e[i]); + $t = self::ge_cmov8_cached($pi, $e[$i]); + // ge25519_add_cached(&r, h, &t); + $r = self::ge_add($h, $t); + + // ge25519_p1p1_to_p2(&s, &r); + // ge25519_p2_dbl(&r, &s); + // ge25519_p1p1_to_p2(&s, &r); + // ge25519_p2_dbl(&r, &s); + // ge25519_p1p1_to_p2(&s, &r); + // ge25519_p2_dbl(&r, &s); + // ge25519_p1p1_to_p2(&s, &r); + // ge25519_p2_dbl(&r, &s); + $s = self::ge_p1p1_to_p2($r); + $r = self::ge_p2_dbl($s); + $s = self::ge_p1p1_to_p2($r); + $r = self::ge_p2_dbl($s); + $s = self::ge_p1p1_to_p2($r); + $r = self::ge_p2_dbl($s); + $s = self::ge_p1p1_to_p2($r); + $r = self::ge_p2_dbl($s); + + // ge25519_p1p1_to_p3(h, &r); /* *16 */ + $h = self::ge_p1p1_to_p3($r); /* *16 */ + } + + // ge25519_cmov8_cached(&t, pi, e[i]); + // ge25519_add_cached(&r, h, &t); + // ge25519_p1p1_to_p3(h, &r); + $t = self::ge_cmov8_cached($pi, $e[0]); + $r = self::ge_add($h, $t); + return self::ge_p1p1_to_p3($r); + } + + /** + * @internal You should not use this directly from another application + * + * @param string $a + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P3 + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedOperand + */ + public static function ge_scalarmult_base($a) + { + /** @var array<int, int> $e */ + $e = array(); + $r = new ParagonIE_Sodium_Core_Curve25519_Ge_P1p1(); + + for ($i = 0; $i < 32; ++$i) { + $dbl = (int) $i << 1; + $e[$dbl] = (int) self::chrToInt($a[$i]) & 15; + $e[$dbl + 1] = (int) (self::chrToInt($a[$i]) >> 4) & 15; + } + + $carry = 0; + for ($i = 0; $i < 63; ++$i) { + $e[$i] += $carry; + $carry = $e[$i] + 8; + $carry >>= 4; + $e[$i] -= $carry << 4; + } + $e[63] += (int) $carry; + + $h = self::ge_p3_0(); + + for ($i = 1; $i < 64; $i += 2) { + $t = self::ge_select((int) floor($i / 2), (int) $e[$i]); + $r = self::ge_madd($r, $h, $t); + $h = self::ge_p1p1_to_p3($r); + } + + $r = self::ge_p3_dbl($h); + + $s = self::ge_p1p1_to_p2($r); + $r = self::ge_p2_dbl($s); + $s = self::ge_p1p1_to_p2($r); + $r = self::ge_p2_dbl($s); + $s = self::ge_p1p1_to_p2($r); + $r = self::ge_p2_dbl($s); + + $h = self::ge_p1p1_to_p3($r); + + for ($i = 0; $i < 64; $i += 2) { + $t = self::ge_select($i >> 1, (int) $e[$i]); + $r = self::ge_madd($r, $h, $t); + $h = self::ge_p1p1_to_p3($r); + } + return $h; + } + + /** + * Calculates (ab + c) mod l + * where l = 2^252 + 27742317777372353535851937790883648493 + * + * @internal You should not use this directly from another application + * + * @param string $a + * @param string $b + * @param string $c + * @return string + * @throws TypeError + */ + public static function sc_muladd($a, $b, $c) + { + $a0 = 2097151 & self::load_3(self::substr($a, 0, 3)); + $a1 = 2097151 & (self::load_4(self::substr($a, 2, 4)) >> 5); + $a2 = 2097151 & (self::load_3(self::substr($a, 5, 3)) >> 2); + $a3 = 2097151 & (self::load_4(self::substr($a, 7, 4)) >> 7); + $a4 = 2097151 & (self::load_4(self::substr($a, 10, 4)) >> 4); + $a5 = 2097151 & (self::load_3(self::substr($a, 13, 3)) >> 1); + $a6 = 2097151 & (self::load_4(self::substr($a, 15, 4)) >> 6); + $a7 = 2097151 & (self::load_3(self::substr($a, 18, 3)) >> 3); + $a8 = 2097151 & self::load_3(self::substr($a, 21, 3)); + $a9 = 2097151 & (self::load_4(self::substr($a, 23, 4)) >> 5); + $a10 = 2097151 & (self::load_3(self::substr($a, 26, 3)) >> 2); + $a11 = (self::load_4(self::substr($a, 28, 4)) >> 7); + + $b0 = 2097151 & self::load_3(self::substr($b, 0, 3)); + $b1 = 2097151 & (self::load_4(self::substr($b, 2, 4)) >> 5); + $b2 = 2097151 & (self::load_3(self::substr($b, 5, 3)) >> 2); + $b3 = 2097151 & (self::load_4(self::substr($b, 7, 4)) >> 7); + $b4 = 2097151 & (self::load_4(self::substr($b, 10, 4)) >> 4); + $b5 = 2097151 & (self::load_3(self::substr($b, 13, 3)) >> 1); + $b6 = 2097151 & (self::load_4(self::substr($b, 15, 4)) >> 6); + $b7 = 2097151 & (self::load_3(self::substr($b, 18, 3)) >> 3); + $b8 = 2097151 & self::load_3(self::substr($b, 21, 3)); + $b9 = 2097151 & (self::load_4(self::substr($b, 23, 4)) >> 5); + $b10 = 2097151 & (self::load_3(self::substr($b, 26, 3)) >> 2); + $b11 = (self::load_4(self::substr($b, 28, 4)) >> 7); + + $c0 = 2097151 & self::load_3(self::substr($c, 0, 3)); + $c1 = 2097151 & (self::load_4(self::substr($c, 2, 4)) >> 5); + $c2 = 2097151 & (self::load_3(self::substr($c, 5, 3)) >> 2); + $c3 = 2097151 & (self::load_4(self::substr($c, 7, 4)) >> 7); + $c4 = 2097151 & (self::load_4(self::substr($c, 10, 4)) >> 4); + $c5 = 2097151 & (self::load_3(self::substr($c, 13, 3)) >> 1); + $c6 = 2097151 & (self::load_4(self::substr($c, 15, 4)) >> 6); + $c7 = 2097151 & (self::load_3(self::substr($c, 18, 3)) >> 3); + $c8 = 2097151 & self::load_3(self::substr($c, 21, 3)); + $c9 = 2097151 & (self::load_4(self::substr($c, 23, 4)) >> 5); + $c10 = 2097151 & (self::load_3(self::substr($c, 26, 3)) >> 2); + $c11 = (self::load_4(self::substr($c, 28, 4)) >> 7); + + /* Can't really avoid the pyramid here: */ + $s0 = $c0 + self::mul($a0, $b0, 24); + $s1 = $c1 + self::mul($a0, $b1, 24) + self::mul($a1, $b0, 24); + $s2 = $c2 + self::mul($a0, $b2, 24) + self::mul($a1, $b1, 24) + self::mul($a2, $b0, 24); + $s3 = $c3 + self::mul($a0, $b3, 24) + self::mul($a1, $b2, 24) + self::mul($a2, $b1, 24) + self::mul($a3, $b0, 24); + $s4 = $c4 + self::mul($a0, $b4, 24) + self::mul($a1, $b3, 24) + self::mul($a2, $b2, 24) + self::mul($a3, $b1, 24) + + self::mul($a4, $b0, 24); + $s5 = $c5 + self::mul($a0, $b5, 24) + self::mul($a1, $b4, 24) + self::mul($a2, $b3, 24) + self::mul($a3, $b2, 24) + + self::mul($a4, $b1, 24) + self::mul($a5, $b0, 24); + $s6 = $c6 + self::mul($a0, $b6, 24) + self::mul($a1, $b5, 24) + self::mul($a2, $b4, 24) + self::mul($a3, $b3, 24) + + self::mul($a4, $b2, 24) + self::mul($a5, $b1, 24) + self::mul($a6, $b0, 24); + $s7 = $c7 + self::mul($a0, $b7, 24) + self::mul($a1, $b6, 24) + self::mul($a2, $b5, 24) + self::mul($a3, $b4, 24) + + self::mul($a4, $b3, 24) + self::mul($a5, $b2, 24) + self::mul($a6, $b1, 24) + self::mul($a7, $b0, 24); + $s8 = $c8 + self::mul($a0, $b8, 24) + self::mul($a1, $b7, 24) + self::mul($a2, $b6, 24) + self::mul($a3, $b5, 24) + + self::mul($a4, $b4, 24) + self::mul($a5, $b3, 24) + self::mul($a6, $b2, 24) + self::mul($a7, $b1, 24) + + self::mul($a8, $b0, 24); + $s9 = $c9 + self::mul($a0, $b9, 24) + self::mul($a1, $b8, 24) + self::mul($a2, $b7, 24) + self::mul($a3, $b6, 24) + + self::mul($a4, $b5, 24) + self::mul($a5, $b4, 24) + self::mul($a6, $b3, 24) + self::mul($a7, $b2, 24) + + self::mul($a8, $b1, 24) + self::mul($a9, $b0, 24); + $s10 = $c10 + self::mul($a0, $b10, 24) + self::mul($a1, $b9, 24) + self::mul($a2, $b8, 24) + self::mul($a3, $b7, 24) + + self::mul($a4, $b6, 24) + self::mul($a5, $b5, 24) + self::mul($a6, $b4, 24) + self::mul($a7, $b3, 24) + + self::mul($a8, $b2, 24) + self::mul($a9, $b1, 24) + self::mul($a10, $b0, 24); + $s11 = $c11 + self::mul($a0, $b11, 24) + self::mul($a1, $b10, 24) + self::mul($a2, $b9, 24) + self::mul($a3, $b8, 24) + + self::mul($a4, $b7, 24) + self::mul($a5, $b6, 24) + self::mul($a6, $b5, 24) + self::mul($a7, $b4, 24) + + self::mul($a8, $b3, 24) + self::mul($a9, $b2, 24) + self::mul($a10, $b1, 24) + self::mul($a11, $b0, 24); + $s12 = self::mul($a1, $b11, 24) + self::mul($a2, $b10, 24) + self::mul($a3, $b9, 24) + self::mul($a4, $b8, 24) + + self::mul($a5, $b7, 24) + self::mul($a6, $b6, 24) + self::mul($a7, $b5, 24) + self::mul($a8, $b4, 24) + + self::mul($a9, $b3, 24) + self::mul($a10, $b2, 24) + self::mul($a11, $b1, 24); + $s13 = self::mul($a2, $b11, 24) + self::mul($a3, $b10, 24) + self::mul($a4, $b9, 24) + self::mul($a5, $b8, 24) + + self::mul($a6, $b7, 24) + self::mul($a7, $b6, 24) + self::mul($a8, $b5, 24) + self::mul($a9, $b4, 24) + + self::mul($a10, $b3, 24) + self::mul($a11, $b2, 24); + $s14 = self::mul($a3, $b11, 24) + self::mul($a4, $b10, 24) + self::mul($a5, $b9, 24) + self::mul($a6, $b8, 24) + + self::mul($a7, $b7, 24) + self::mul($a8, $b6, 24) + self::mul($a9, $b5, 24) + self::mul($a10, $b4, 24) + + self::mul($a11, $b3, 24); + $s15 = self::mul($a4, $b11, 24) + self::mul($a5, $b10, 24) + self::mul($a6, $b9, 24) + self::mul($a7, $b8, 24) + + self::mul($a8, $b7, 24) + self::mul($a9, $b6, 24) + self::mul($a10, $b5, 24) + self::mul($a11, $b4, 24); + $s16 = self::mul($a5, $b11, 24) + self::mul($a6, $b10, 24) + self::mul($a7, $b9, 24) + self::mul($a8, $b8, 24) + + self::mul($a9, $b7, 24) + self::mul($a10, $b6, 24) + self::mul($a11, $b5, 24); + $s17 = self::mul($a6, $b11, 24) + self::mul($a7, $b10, 24) + self::mul($a8, $b9, 24) + self::mul($a9, $b8, 24) + + self::mul($a10, $b7, 24) + self::mul($a11, $b6, 24); + $s18 = self::mul($a7, $b11, 24) + self::mul($a8, $b10, 24) + self::mul($a9, $b9, 24) + self::mul($a10, $b8, 24) + + self::mul($a11, $b7, 24); + $s19 = self::mul($a8, $b11, 24) + self::mul($a9, $b10, 24) + self::mul($a10, $b9, 24) + self::mul($a11, $b8, 24); + $s20 = self::mul($a9, $b11, 24) + self::mul($a10, $b10, 24) + self::mul($a11, $b9, 24); + $s21 = self::mul($a10, $b11, 24) + self::mul($a11, $b10, 24); + $s22 = self::mul($a11, $b11, 24); + $s23 = 0; + + $carry0 = ($s0 + (1 << 20)) >> 21; + $s1 += $carry0; + $s0 -= $carry0 << 21; + $carry2 = ($s2 + (1 << 20)) >> 21; + $s3 += $carry2; + $s2 -= $carry2 << 21; + $carry4 = ($s4 + (1 << 20)) >> 21; + $s5 += $carry4; + $s4 -= $carry4 << 21; + $carry6 = ($s6 + (1 << 20)) >> 21; + $s7 += $carry6; + $s6 -= $carry6 << 21; + $carry8 = ($s8 + (1 << 20)) >> 21; + $s9 += $carry8; + $s8 -= $carry8 << 21; + $carry10 = ($s10 + (1 << 20)) >> 21; + $s11 += $carry10; + $s10 -= $carry10 << 21; + $carry12 = ($s12 + (1 << 20)) >> 21; + $s13 += $carry12; + $s12 -= $carry12 << 21; + $carry14 = ($s14 + (1 << 20)) >> 21; + $s15 += $carry14; + $s14 -= $carry14 << 21; + $carry16 = ($s16 + (1 << 20)) >> 21; + $s17 += $carry16; + $s16 -= $carry16 << 21; + $carry18 = ($s18 + (1 << 20)) >> 21; + $s19 += $carry18; + $s18 -= $carry18 << 21; + $carry20 = ($s20 + (1 << 20)) >> 21; + $s21 += $carry20; + $s20 -= $carry20 << 21; + $carry22 = ($s22 + (1 << 20)) >> 21; + $s23 += $carry22; + $s22 -= $carry22 << 21; + + $carry1 = ($s1 + (1 << 20)) >> 21; + $s2 += $carry1; + $s1 -= $carry1 << 21; + $carry3 = ($s3 + (1 << 20)) >> 21; + $s4 += $carry3; + $s3 -= $carry3 << 21; + $carry5 = ($s5 + (1 << 20)) >> 21; + $s6 += $carry5; + $s5 -= $carry5 << 21; + $carry7 = ($s7 + (1 << 20)) >> 21; + $s8 += $carry7; + $s7 -= $carry7 << 21; + $carry9 = ($s9 + (1 << 20)) >> 21; + $s10 += $carry9; + $s9 -= $carry9 << 21; + $carry11 = ($s11 + (1 << 20)) >> 21; + $s12 += $carry11; + $s11 -= $carry11 << 21; + $carry13 = ($s13 + (1 << 20)) >> 21; + $s14 += $carry13; + $s13 -= $carry13 << 21; + $carry15 = ($s15 + (1 << 20)) >> 21; + $s16 += $carry15; + $s15 -= $carry15 << 21; + $carry17 = ($s17 + (1 << 20)) >> 21; + $s18 += $carry17; + $s17 -= $carry17 << 21; + $carry19 = ($s19 + (1 << 20)) >> 21; + $s20 += $carry19; + $s19 -= $carry19 << 21; + $carry21 = ($s21 + (1 << 20)) >> 21; + $s22 += $carry21; + $s21 -= $carry21 << 21; + + $s11 += self::mul($s23, 666643, 20); + $s12 += self::mul($s23, 470296, 19); + $s13 += self::mul($s23, 654183, 20); + $s14 -= self::mul($s23, 997805, 20); + $s15 += self::mul($s23, 136657, 18); + $s16 -= self::mul($s23, 683901, 20); + + $s10 += self::mul($s22, 666643, 20); + $s11 += self::mul($s22, 470296, 19); + $s12 += self::mul($s22, 654183, 20); + $s13 -= self::mul($s22, 997805, 20); + $s14 += self::mul($s22, 136657, 18); + $s15 -= self::mul($s22, 683901, 20); + + $s9 += self::mul($s21, 666643, 20); + $s10 += self::mul($s21, 470296, 19); + $s11 += self::mul($s21, 654183, 20); + $s12 -= self::mul($s21, 997805, 20); + $s13 += self::mul($s21, 136657, 18); + $s14 -= self::mul($s21, 683901, 20); + + $s8 += self::mul($s20, 666643, 20); + $s9 += self::mul($s20, 470296, 19); + $s10 += self::mul($s20, 654183, 20); + $s11 -= self::mul($s20, 997805, 20); + $s12 += self::mul($s20, 136657, 18); + $s13 -= self::mul($s20, 683901, 20); + + $s7 += self::mul($s19, 666643, 20); + $s8 += self::mul($s19, 470296, 19); + $s9 += self::mul($s19, 654183, 20); + $s10 -= self::mul($s19, 997805, 20); + $s11 += self::mul($s19, 136657, 18); + $s12 -= self::mul($s19, 683901, 20); + + $s6 += self::mul($s18, 666643, 20); + $s7 += self::mul($s18, 470296, 19); + $s8 += self::mul($s18, 654183, 20); + $s9 -= self::mul($s18, 997805, 20); + $s10 += self::mul($s18, 136657, 18); + $s11 -= self::mul($s18, 683901, 20); + + $carry6 = ($s6 + (1 << 20)) >> 21; + $s7 += $carry6; + $s6 -= $carry6 << 21; + $carry8 = ($s8 + (1 << 20)) >> 21; + $s9 += $carry8; + $s8 -= $carry8 << 21; + $carry10 = ($s10 + (1 << 20)) >> 21; + $s11 += $carry10; + $s10 -= $carry10 << 21; + $carry12 = ($s12 + (1 << 20)) >> 21; + $s13 += $carry12; + $s12 -= $carry12 << 21; + $carry14 = ($s14 + (1 << 20)) >> 21; + $s15 += $carry14; + $s14 -= $carry14 << 21; + $carry16 = ($s16 + (1 << 20)) >> 21; + $s17 += $carry16; + $s16 -= $carry16 << 21; + + $carry7 = ($s7 + (1 << 20)) >> 21; + $s8 += $carry7; + $s7 -= $carry7 << 21; + $carry9 = ($s9 + (1 << 20)) >> 21; + $s10 += $carry9; + $s9 -= $carry9 << 21; + $carry11 = ($s11 + (1 << 20)) >> 21; + $s12 += $carry11; + $s11 -= $carry11 << 21; + $carry13 = ($s13 + (1 << 20)) >> 21; + $s14 += $carry13; + $s13 -= $carry13 << 21; + $carry15 = ($s15 + (1 << 20)) >> 21; + $s16 += $carry15; + $s15 -= $carry15 << 21; + + $s5 += self::mul($s17, 666643, 20); + $s6 += self::mul($s17, 470296, 19); + $s7 += self::mul($s17, 654183, 20); + $s8 -= self::mul($s17, 997805, 20); + $s9 += self::mul($s17, 136657, 18); + $s10 -= self::mul($s17, 683901, 20); + + $s4 += self::mul($s16, 666643, 20); + $s5 += self::mul($s16, 470296, 19); + $s6 += self::mul($s16, 654183, 20); + $s7 -= self::mul($s16, 997805, 20); + $s8 += self::mul($s16, 136657, 18); + $s9 -= self::mul($s16, 683901, 20); + + $s3 += self::mul($s15, 666643, 20); + $s4 += self::mul($s15, 470296, 19); + $s5 += self::mul($s15, 654183, 20); + $s6 -= self::mul($s15, 997805, 20); + $s7 += self::mul($s15, 136657, 18); + $s8 -= self::mul($s15, 683901, 20); + + $s2 += self::mul($s14, 666643, 20); + $s3 += self::mul($s14, 470296, 19); + $s4 += self::mul($s14, 654183, 20); + $s5 -= self::mul($s14, 997805, 20); + $s6 += self::mul($s14, 136657, 18); + $s7 -= self::mul($s14, 683901, 20); + + $s1 += self::mul($s13, 666643, 20); + $s2 += self::mul($s13, 470296, 19); + $s3 += self::mul($s13, 654183, 20); + $s4 -= self::mul($s13, 997805, 20); + $s5 += self::mul($s13, 136657, 18); + $s6 -= self::mul($s13, 683901, 20); + + $s0 += self::mul($s12, 666643, 20); + $s1 += self::mul($s12, 470296, 19); + $s2 += self::mul($s12, 654183, 20); + $s3 -= self::mul($s12, 997805, 20); + $s4 += self::mul($s12, 136657, 18); + $s5 -= self::mul($s12, 683901, 20); + $s12 = 0; + + $carry0 = ($s0 + (1 << 20)) >> 21; + $s1 += $carry0; + $s0 -= $carry0 << 21; + $carry2 = ($s2 + (1 << 20)) >> 21; + $s3 += $carry2; + $s2 -= $carry2 << 21; + $carry4 = ($s4 + (1 << 20)) >> 21; + $s5 += $carry4; + $s4 -= $carry4 << 21; + $carry6 = ($s6 + (1 << 20)) >> 21; + $s7 += $carry6; + $s6 -= $carry6 << 21; + $carry8 = ($s8 + (1 << 20)) >> 21; + $s9 += $carry8; + $s8 -= $carry8 << 21; + $carry10 = ($s10 + (1 << 20)) >> 21; + $s11 += $carry10; + $s10 -= $carry10 << 21; + + $carry1 = ($s1 + (1 << 20)) >> 21; + $s2 += $carry1; + $s1 -= $carry1 << 21; + $carry3 = ($s3 + (1 << 20)) >> 21; + $s4 += $carry3; + $s3 -= $carry3 << 21; + $carry5 = ($s5 + (1 << 20)) >> 21; + $s6 += $carry5; + $s5 -= $carry5 << 21; + $carry7 = ($s7 + (1 << 20)) >> 21; + $s8 += $carry7; + $s7 -= $carry7 << 21; + $carry9 = ($s9 + (1 << 20)) >> 21; + $s10 += $carry9; + $s9 -= $carry9 << 21; + $carry11 = ($s11 + (1 << 20)) >> 21; + $s12 += $carry11; + $s11 -= $carry11 << 21; + + $s0 += self::mul($s12, 666643, 20); + $s1 += self::mul($s12, 470296, 19); + $s2 += self::mul($s12, 654183, 20); + $s3 -= self::mul($s12, 997805, 20); + $s4 += self::mul($s12, 136657, 18); + $s5 -= self::mul($s12, 683901, 20); + $s12 = 0; + + $carry0 = $s0 >> 21; + $s1 += $carry0; + $s0 -= $carry0 << 21; + $carry1 = $s1 >> 21; + $s2 += $carry1; + $s1 -= $carry1 << 21; + $carry2 = $s2 >> 21; + $s3 += $carry2; + $s2 -= $carry2 << 21; + $carry3 = $s3 >> 21; + $s4 += $carry3; + $s3 -= $carry3 << 21; + $carry4 = $s4 >> 21; + $s5 += $carry4; + $s4 -= $carry4 << 21; + $carry5 = $s5 >> 21; + $s6 += $carry5; + $s5 -= $carry5 << 21; + $carry6 = $s6 >> 21; + $s7 += $carry6; + $s6 -= $carry6 << 21; + $carry7 = $s7 >> 21; + $s8 += $carry7; + $s7 -= $carry7 << 21; + $carry8 = $s8 >> 21; + $s9 += $carry8; + $s8 -= $carry8 << 21; + $carry9 = $s9 >> 21; + $s10 += $carry9; + $s9 -= $carry9 << 21; + $carry10 = $s10 >> 21; + $s11 += $carry10; + $s10 -= $carry10 << 21; + $carry11 = $s11 >> 21; + $s12 += $carry11; + $s11 -= $carry11 << 21; + + $s0 += self::mul($s12, 666643, 20); + $s1 += self::mul($s12, 470296, 19); + $s2 += self::mul($s12, 654183, 20); + $s3 -= self::mul($s12, 997805, 20); + $s4 += self::mul($s12, 136657, 18); + $s5 -= self::mul($s12, 683901, 20); + + $carry0 = $s0 >> 21; + $s1 += $carry0; + $s0 -= $carry0 << 21; + $carry1 = $s1 >> 21; + $s2 += $carry1; + $s1 -= $carry1 << 21; + $carry2 = $s2 >> 21; + $s3 += $carry2; + $s2 -= $carry2 << 21; + $carry3 = $s3 >> 21; + $s4 += $carry3; + $s3 -= $carry3 << 21; + $carry4 = $s4 >> 21; + $s5 += $carry4; + $s4 -= $carry4 << 21; + $carry5 = $s5 >> 21; + $s6 += $carry5; + $s5 -= $carry5 << 21; + $carry6 = $s6 >> 21; + $s7 += $carry6; + $s6 -= $carry6 << 21; + $carry7 = $s7 >> 21; + $s8 += $carry7; + $s7 -= $carry7 << 21; + $carry8 = $s8 >> 21; + $s9 += $carry8; + $s8 -= $carry8 << 21; + $carry9 = $s9 >> 21; + $s10 += $carry9; + $s9 -= $carry9 << 21; + $carry10 = $s10 >> 21; + $s11 += $carry10; + $s10 -= $carry10 << 21; + + /** + * @var array<int, int> + */ + $arr = array( + (int) (0xff & ($s0 >> 0)), + (int) (0xff & ($s0 >> 8)), + (int) (0xff & (($s0 >> 16) | $s1 << 5)), + (int) (0xff & ($s1 >> 3)), + (int) (0xff & ($s1 >> 11)), + (int) (0xff & (($s1 >> 19) | $s2 << 2)), + (int) (0xff & ($s2 >> 6)), + (int) (0xff & (($s2 >> 14) | $s3 << 7)), + (int) (0xff & ($s3 >> 1)), + (int) (0xff & ($s3 >> 9)), + (int) (0xff & (($s3 >> 17) | $s4 << 4)), + (int) (0xff & ($s4 >> 4)), + (int) (0xff & ($s4 >> 12)), + (int) (0xff & (($s4 >> 20) | $s5 << 1)), + (int) (0xff & ($s5 >> 7)), + (int) (0xff & (($s5 >> 15) | $s6 << 6)), + (int) (0xff & ($s6 >> 2)), + (int) (0xff & ($s6 >> 10)), + (int) (0xff & (($s6 >> 18) | $s7 << 3)), + (int) (0xff & ($s7 >> 5)), + (int) (0xff & ($s7 >> 13)), + (int) (0xff & ($s8 >> 0)), + (int) (0xff & ($s8 >> 8)), + (int) (0xff & (($s8 >> 16) | $s9 << 5)), + (int) (0xff & ($s9 >> 3)), + (int) (0xff & ($s9 >> 11)), + (int) (0xff & (($s9 >> 19) | $s10 << 2)), + (int) (0xff & ($s10 >> 6)), + (int) (0xff & (($s10 >> 14) | $s11 << 7)), + (int) (0xff & ($s11 >> 1)), + (int) (0xff & ($s11 >> 9)), + 0xff & ($s11 >> 17) + ); + return self::intArrayToString($arr); + } + + /** + * @internal You should not use this directly from another application + * + * @param string $s + * @return string + * @throws TypeError + */ + public static function sc_reduce($s) + { + $s0 = 2097151 & self::load_3(self::substr($s, 0, 3)); + $s1 = 2097151 & (self::load_4(self::substr($s, 2, 4)) >> 5); + $s2 = 2097151 & (self::load_3(self::substr($s, 5, 3)) >> 2); + $s3 = 2097151 & (self::load_4(self::substr($s, 7, 4)) >> 7); + $s4 = 2097151 & (self::load_4(self::substr($s, 10, 4)) >> 4); + $s5 = 2097151 & (self::load_3(self::substr($s, 13, 3)) >> 1); + $s6 = 2097151 & (self::load_4(self::substr($s, 15, 4)) >> 6); + $s7 = 2097151 & (self::load_3(self::substr($s, 18, 4)) >> 3); + $s8 = 2097151 & self::load_3(self::substr($s, 21, 3)); + $s9 = 2097151 & (self::load_4(self::substr($s, 23, 4)) >> 5); + $s10 = 2097151 & (self::load_3(self::substr($s, 26, 3)) >> 2); + $s11 = 2097151 & (self::load_4(self::substr($s, 28, 4)) >> 7); + $s12 = 2097151 & (self::load_4(self::substr($s, 31, 4)) >> 4); + $s13 = 2097151 & (self::load_3(self::substr($s, 34, 3)) >> 1); + $s14 = 2097151 & (self::load_4(self::substr($s, 36, 4)) >> 6); + $s15 = 2097151 & (self::load_3(self::substr($s, 39, 4)) >> 3); + $s16 = 2097151 & self::load_3(self::substr($s, 42, 3)); + $s17 = 2097151 & (self::load_4(self::substr($s, 44, 4)) >> 5); + $s18 = 2097151 & (self::load_3(self::substr($s, 47, 3)) >> 2); + $s19 = 2097151 & (self::load_4(self::substr($s, 49, 4)) >> 7); + $s20 = 2097151 & (self::load_4(self::substr($s, 52, 4)) >> 4); + $s21 = 2097151 & (self::load_3(self::substr($s, 55, 3)) >> 1); + $s22 = 2097151 & (self::load_4(self::substr($s, 57, 4)) >> 6); + $s23 = 0x1fffffff & (self::load_4(self::substr($s, 60, 4)) >> 3); + + $s11 += self::mul($s23, 666643, 20); + $s12 += self::mul($s23, 470296, 19); + $s13 += self::mul($s23, 654183, 20); + $s14 -= self::mul($s23, 997805, 20); + $s15 += self::mul($s23, 136657, 18); + $s16 -= self::mul($s23, 683901, 20); + + $s10 += self::mul($s22, 666643, 20); + $s11 += self::mul($s22, 470296, 19); + $s12 += self::mul($s22, 654183, 20); + $s13 -= self::mul($s22, 997805, 20); + $s14 += self::mul($s22, 136657, 18); + $s15 -= self::mul($s22, 683901, 20); + + $s9 += self::mul($s21, 666643, 20); + $s10 += self::mul($s21, 470296, 19); + $s11 += self::mul($s21, 654183, 20); + $s12 -= self::mul($s21, 997805, 20); + $s13 += self::mul($s21, 136657, 18); + $s14 -= self::mul($s21, 683901, 20); + + $s8 += self::mul($s20, 666643, 20); + $s9 += self::mul($s20, 470296, 19); + $s10 += self::mul($s20, 654183, 20); + $s11 -= self::mul($s20, 997805, 20); + $s12 += self::mul($s20, 136657, 18); + $s13 -= self::mul($s20, 683901, 20); + + $s7 += self::mul($s19, 666643, 20); + $s8 += self::mul($s19, 470296, 19); + $s9 += self::mul($s19, 654183, 20); + $s10 -= self::mul($s19, 997805, 20); + $s11 += self::mul($s19, 136657, 18); + $s12 -= self::mul($s19, 683901, 20); + + $s6 += self::mul($s18, 666643, 20); + $s7 += self::mul($s18, 470296, 19); + $s8 += self::mul($s18, 654183, 20); + $s9 -= self::mul($s18, 997805, 20); + $s10 += self::mul($s18, 136657, 18); + $s11 -= self::mul($s18, 683901, 20); + + $carry6 = ($s6 + (1 << 20)) >> 21; + $s7 += $carry6; + $s6 -= $carry6 << 21; + $carry8 = ($s8 + (1 << 20)) >> 21; + $s9 += $carry8; + $s8 -= $carry8 << 21; + $carry10 = ($s10 + (1 << 20)) >> 21; + $s11 += $carry10; + $s10 -= $carry10 << 21; + $carry12 = ($s12 + (1 << 20)) >> 21; + $s13 += $carry12; + $s12 -= $carry12 << 21; + $carry14 = ($s14 + (1 << 20)) >> 21; + $s15 += $carry14; + $s14 -= $carry14 << 21; + $carry16 = ($s16 + (1 << 20)) >> 21; + $s17 += $carry16; + $s16 -= $carry16 << 21; + + $carry7 = ($s7 + (1 << 20)) >> 21; + $s8 += $carry7; + $s7 -= $carry7 << 21; + $carry9 = ($s9 + (1 << 20)) >> 21; + $s10 += $carry9; + $s9 -= $carry9 << 21; + $carry11 = ($s11 + (1 << 20)) >> 21; + $s12 += $carry11; + $s11 -= $carry11 << 21; + $carry13 = ($s13 + (1 << 20)) >> 21; + $s14 += $carry13; + $s13 -= $carry13 << 21; + $carry15 = ($s15 + (1 << 20)) >> 21; + $s16 += $carry15; + $s15 -= $carry15 << 21; + + $s5 += self::mul($s17, 666643, 20); + $s6 += self::mul($s17, 470296, 19); + $s7 += self::mul($s17, 654183, 20); + $s8 -= self::mul($s17, 997805, 20); + $s9 += self::mul($s17, 136657, 18); + $s10 -= self::mul($s17, 683901, 20); + + $s4 += self::mul($s16, 666643, 20); + $s5 += self::mul($s16, 470296, 19); + $s6 += self::mul($s16, 654183, 20); + $s7 -= self::mul($s16, 997805, 20); + $s8 += self::mul($s16, 136657, 18); + $s9 -= self::mul($s16, 683901, 20); + + $s3 += self::mul($s15, 666643, 20); + $s4 += self::mul($s15, 470296, 19); + $s5 += self::mul($s15, 654183, 20); + $s6 -= self::mul($s15, 997805, 20); + $s7 += self::mul($s15, 136657, 18); + $s8 -= self::mul($s15, 683901, 20); + + $s2 += self::mul($s14, 666643, 20); + $s3 += self::mul($s14, 470296, 19); + $s4 += self::mul($s14, 654183, 20); + $s5 -= self::mul($s14, 997805, 20); + $s6 += self::mul($s14, 136657, 18); + $s7 -= self::mul($s14, 683901, 20); + + $s1 += self::mul($s13, 666643, 20); + $s2 += self::mul($s13, 470296, 19); + $s3 += self::mul($s13, 654183, 20); + $s4 -= self::mul($s13, 997805, 20); + $s5 += self::mul($s13, 136657, 18); + $s6 -= self::mul($s13, 683901, 20); + + $s0 += self::mul($s12, 666643, 20); + $s1 += self::mul($s12, 470296, 19); + $s2 += self::mul($s12, 654183, 20); + $s3 -= self::mul($s12, 997805, 20); + $s4 += self::mul($s12, 136657, 18); + $s5 -= self::mul($s12, 683901, 20); + $s12 = 0; + + $carry0 = ($s0 + (1 << 20)) >> 21; + $s1 += $carry0; + $s0 -= $carry0 << 21; + $carry2 = ($s2 + (1 << 20)) >> 21; + $s3 += $carry2; + $s2 -= $carry2 << 21; + $carry4 = ($s4 + (1 << 20)) >> 21; + $s5 += $carry4; + $s4 -= $carry4 << 21; + $carry6 = ($s6 + (1 << 20)) >> 21; + $s7 += $carry6; + $s6 -= $carry6 << 21; + $carry8 = ($s8 + (1 << 20)) >> 21; + $s9 += $carry8; + $s8 -= $carry8 << 21; + $carry10 = ($s10 + (1 << 20)) >> 21; + $s11 += $carry10; + $s10 -= $carry10 << 21; + + $carry1 = ($s1 + (1 << 20)) >> 21; + $s2 += $carry1; + $s1 -= $carry1 << 21; + $carry3 = ($s3 + (1 << 20)) >> 21; + $s4 += $carry3; + $s3 -= $carry3 << 21; + $carry5 = ($s5 + (1 << 20)) >> 21; + $s6 += $carry5; + $s5 -= $carry5 << 21; + $carry7 = ($s7 + (1 << 20)) >> 21; + $s8 += $carry7; + $s7 -= $carry7 << 21; + $carry9 = ($s9 + (1 << 20)) >> 21; + $s10 += $carry9; + $s9 -= $carry9 << 21; + $carry11 = ($s11 + (1 << 20)) >> 21; + $s12 += $carry11; + $s11 -= $carry11 << 21; + + $s0 += self::mul($s12, 666643, 20); + $s1 += self::mul($s12, 470296, 19); + $s2 += self::mul($s12, 654183, 20); + $s3 -= self::mul($s12, 997805, 20); + $s4 += self::mul($s12, 136657, 18); + $s5 -= self::mul($s12, 683901, 20); + $s12 = 0; + + $carry0 = $s0 >> 21; + $s1 += $carry0; + $s0 -= $carry0 << 21; + $carry1 = $s1 >> 21; + $s2 += $carry1; + $s1 -= $carry1 << 21; + $carry2 = $s2 >> 21; + $s3 += $carry2; + $s2 -= $carry2 << 21; + $carry3 = $s3 >> 21; + $s4 += $carry3; + $s3 -= $carry3 << 21; + $carry4 = $s4 >> 21; + $s5 += $carry4; + $s4 -= $carry4 << 21; + $carry5 = $s5 >> 21; + $s6 += $carry5; + $s5 -= $carry5 << 21; + $carry6 = $s6 >> 21; + $s7 += $carry6; + $s6 -= $carry6 << 21; + $carry7 = $s7 >> 21; + $s8 += $carry7; + $s7 -= $carry7 << 21; + $carry8 = $s8 >> 21; + $s9 += $carry8; + $s8 -= $carry8 << 21; + $carry9 = $s9 >> 21; + $s10 += $carry9; + $s9 -= $carry9 << 21; + $carry10 = $s10 >> 21; + $s11 += $carry10; + $s10 -= $carry10 << 21; + $carry11 = $s11 >> 21; + $s12 += $carry11; + $s11 -= $carry11 << 21; + + $s0 += self::mul($s12, 666643, 20); + $s1 += self::mul($s12, 470296, 19); + $s2 += self::mul($s12, 654183, 20); + $s3 -= self::mul($s12, 997805, 20); + $s4 += self::mul($s12, 136657, 18); + $s5 -= self::mul($s12, 683901, 20); + + $carry0 = $s0 >> 21; + $s1 += $carry0; + $s0 -= $carry0 << 21; + $carry1 = $s1 >> 21; + $s2 += $carry1; + $s1 -= $carry1 << 21; + $carry2 = $s2 >> 21; + $s3 += $carry2; + $s2 -= $carry2 << 21; + $carry3 = $s3 >> 21; + $s4 += $carry3; + $s3 -= $carry3 << 21; + $carry4 = $s4 >> 21; + $s5 += $carry4; + $s4 -= $carry4 << 21; + $carry5 = $s5 >> 21; + $s6 += $carry5; + $s5 -= $carry5 << 21; + $carry6 = $s6 >> 21; + $s7 += $carry6; + $s6 -= $carry6 << 21; + $carry7 = $s7 >> 21; + $s8 += $carry7; + $s7 -= $carry7 << 21; + $carry8 = $s8 >> 21; + $s9 += $carry8; + $s8 -= $carry8 << 21; + $carry9 = $s9 >> 21; + $s10 += $carry9; + $s9 -= $carry9 << 21; + $carry10 = $s10 >> 21; + $s11 += $carry10; + $s10 -= $carry10 << 21; + + /** + * @var array<int, int> + */ + $arr = array( + (int) ($s0 >> 0), + (int) ($s0 >> 8), + (int) (($s0 >> 16) | $s1 << 5), + (int) ($s1 >> 3), + (int) ($s1 >> 11), + (int) (($s1 >> 19) | $s2 << 2), + (int) ($s2 >> 6), + (int) (($s2 >> 14) | $s3 << 7), + (int) ($s3 >> 1), + (int) ($s3 >> 9), + (int) (($s3 >> 17) | $s4 << 4), + (int) ($s4 >> 4), + (int) ($s4 >> 12), + (int) (($s4 >> 20) | $s5 << 1), + (int) ($s5 >> 7), + (int) (($s5 >> 15) | $s6 << 6), + (int) ($s6 >> 2), + (int) ($s6 >> 10), + (int) (($s6 >> 18) | $s7 << 3), + (int) ($s7 >> 5), + (int) ($s7 >> 13), + (int) ($s8 >> 0), + (int) ($s8 >> 8), + (int) (($s8 >> 16) | $s9 << 5), + (int) ($s9 >> 3), + (int) ($s9 >> 11), + (int) (($s9 >> 19) | $s10 << 2), + (int) ($s10 >> 6), + (int) (($s10 >> 14) | $s11 << 7), + (int) ($s11 >> 1), + (int) ($s11 >> 9), + (int) $s11 >> 17 + ); + return self::intArrayToString($arr); + } + + /** + * multiply by the order of the main subgroup l = 2^252+27742317777372353535851937790883648493 + * + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $A + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P3 + */ + public static function ge_mul_l(ParagonIE_Sodium_Core_Curve25519_Ge_P3 $A) + { + $aslide = array( + 13, 0, 0, 0, 0, -1, 0, 0, 0, 0, -11, 0, 0, 0, 0, 0, 0, -5, 0, 0, 0, + 0, 0, 0, -3, 0, 0, 0, 0, -13, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 3, 0, + 0, 0, 0, -13, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0, 11, 0, 0, 0, + 0, 0, 11, 0, 0, 0, 0, -13, 0, 0, 0, 0, 0, 0, -3, 0, 0, 0, 0, 0, -1, + 0, 0, 0, 0, 3, 0, 0, 0, 0, -11, 0, 0, 0, 0, 0, 0, 0, 15, 0, 0, 0, + 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 7, 0, 0, 0, 0, 5, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 + ); + + /** @var array<int, ParagonIE_Sodium_Core_Curve25519_Ge_Cached> $Ai size 8 */ + $Ai = array(); + + # ge_p3_to_cached(&Ai[0], A); + $Ai[0] = self::ge_p3_to_cached($A); + # ge_p3_dbl(&t, A); + $t = self::ge_p3_dbl($A); + # ge_p1p1_to_p3(&A2, &t); + $A2 = self::ge_p1p1_to_p3($t); + + for ($i = 1; $i < 8; ++$i) { + # ge_add(&t, &A2, &Ai[0]); + $t = self::ge_add($A2, $Ai[$i - 1]); + # ge_p1p1_to_p3(&u, &t); + $u = self::ge_p1p1_to_p3($t); + # ge_p3_to_cached(&Ai[i], &u); + $Ai[$i] = self::ge_p3_to_cached($u); + } + + $r = self::ge_p3_0(); + for ($i = 252; $i >= 0; --$i) { + $t = self::ge_p3_dbl($r); + if ($aslide[$i] > 0) { + # ge_p1p1_to_p3(&u, &t); + $u = self::ge_p1p1_to_p3($t); + # ge_add(&t, &u, &Ai[aslide[i] / 2]); + $t = self::ge_add($u, $Ai[(int)($aslide[$i] / 2)]); + } elseif ($aslide[$i] < 0) { + # ge_p1p1_to_p3(&u, &t); + $u = self::ge_p1p1_to_p3($t); + # ge_sub(&t, &u, &Ai[(-aslide[i]) / 2]); + $t = self::ge_sub($u, $Ai[(int)(-$aslide[$i] / 2)]); + } + } + + # ge_p1p1_to_p3(r, &t); + return self::ge_p1p1_to_p3($t); + } + + /** + * @param string $a + * @param string $b + * @return string + */ + public static function sc25519_mul($a, $b) + { + // int64_t a0 = 2097151 & load_3(a); + // int64_t a1 = 2097151 & (load_4(a + 2) >> 5); + // int64_t a2 = 2097151 & (load_3(a + 5) >> 2); + // int64_t a3 = 2097151 & (load_4(a + 7) >> 7); + // int64_t a4 = 2097151 & (load_4(a + 10) >> 4); + // int64_t a5 = 2097151 & (load_3(a + 13) >> 1); + // int64_t a6 = 2097151 & (load_4(a + 15) >> 6); + // int64_t a7 = 2097151 & (load_3(a + 18) >> 3); + // int64_t a8 = 2097151 & load_3(a + 21); + // int64_t a9 = 2097151 & (load_4(a + 23) >> 5); + // int64_t a10 = 2097151 & (load_3(a + 26) >> 2); + // int64_t a11 = (load_4(a + 28) >> 7); + $a0 = 2097151 & self::load_3(self::substr($a, 0, 3)); + $a1 = 2097151 & (self::load_4(self::substr($a, 2, 4)) >> 5); + $a2 = 2097151 & (self::load_3(self::substr($a, 5, 3)) >> 2); + $a3 = 2097151 & (self::load_4(self::substr($a, 7, 4)) >> 7); + $a4 = 2097151 & (self::load_4(self::substr($a, 10, 4)) >> 4); + $a5 = 2097151 & (self::load_3(self::substr($a, 13, 3)) >> 1); + $a6 = 2097151 & (self::load_4(self::substr($a, 15, 4)) >> 6); + $a7 = 2097151 & (self::load_3(self::substr($a, 18, 3)) >> 3); + $a8 = 2097151 & self::load_3(self::substr($a, 21, 3)); + $a9 = 2097151 & (self::load_4(self::substr($a, 23, 4)) >> 5); + $a10 = 2097151 & (self::load_3(self::substr($a, 26, 3)) >> 2); + $a11 = (self::load_4(self::substr($a, 28, 4)) >> 7); + + // int64_t b0 = 2097151 & load_3(b); + // int64_t b1 = 2097151 & (load_4(b + 2) >> 5); + // int64_t b2 = 2097151 & (load_3(b + 5) >> 2); + // int64_t b3 = 2097151 & (load_4(b + 7) >> 7); + // int64_t b4 = 2097151 & (load_4(b + 10) >> 4); + // int64_t b5 = 2097151 & (load_3(b + 13) >> 1); + // int64_t b6 = 2097151 & (load_4(b + 15) >> 6); + // int64_t b7 = 2097151 & (load_3(b + 18) >> 3); + // int64_t b8 = 2097151 & load_3(b + 21); + // int64_t b9 = 2097151 & (load_4(b + 23) >> 5); + // int64_t b10 = 2097151 & (load_3(b + 26) >> 2); + // int64_t b11 = (load_4(b + 28) >> 7); + $b0 = 2097151 & self::load_3(self::substr($b, 0, 3)); + $b1 = 2097151 & (self::load_4(self::substr($b, 2, 4)) >> 5); + $b2 = 2097151 & (self::load_3(self::substr($b, 5, 3)) >> 2); + $b3 = 2097151 & (self::load_4(self::substr($b, 7, 4)) >> 7); + $b4 = 2097151 & (self::load_4(self::substr($b, 10, 4)) >> 4); + $b5 = 2097151 & (self::load_3(self::substr($b, 13, 3)) >> 1); + $b6 = 2097151 & (self::load_4(self::substr($b, 15, 4)) >> 6); + $b7 = 2097151 & (self::load_3(self::substr($b, 18, 3)) >> 3); + $b8 = 2097151 & self::load_3(self::substr($b, 21, 3)); + $b9 = 2097151 & (self::load_4(self::substr($b, 23, 4)) >> 5); + $b10 = 2097151 & (self::load_3(self::substr($b, 26, 3)) >> 2); + $b11 = (self::load_4(self::substr($b, 28, 4)) >> 7); + + // s0 = a0 * b0; + // s1 = a0 * b1 + a1 * b0; + // s2 = a0 * b2 + a1 * b1 + a2 * b0; + // s3 = a0 * b3 + a1 * b2 + a2 * b1 + a3 * b0; + // s4 = a0 * b4 + a1 * b3 + a2 * b2 + a3 * b1 + a4 * b0; + // s5 = a0 * b5 + a1 * b4 + a2 * b3 + a3 * b2 + a4 * b1 + a5 * b0; + // s6 = a0 * b6 + a1 * b5 + a2 * b4 + a3 * b3 + a4 * b2 + a5 * b1 + a6 * b0; + // s7 = a0 * b7 + a1 * b6 + a2 * b5 + a3 * b4 + a4 * b3 + a5 * b2 + + // a6 * b1 + a7 * b0; + // s8 = a0 * b8 + a1 * b7 + a2 * b6 + a3 * b5 + a4 * b4 + a5 * b3 + + // a6 * b2 + a7 * b1 + a8 * b0; + // s9 = a0 * b9 + a1 * b8 + a2 * b7 + a3 * b6 + a4 * b5 + a5 * b4 + + // a6 * b3 + a7 * b2 + a8 * b1 + a9 * b0; + // s10 = a0 * b10 + a1 * b9 + a2 * b8 + a3 * b7 + a4 * b6 + a5 * b5 + + // a6 * b4 + a7 * b3 + a8 * b2 + a9 * b1 + a10 * b0; + // s11 = a0 * b11 + a1 * b10 + a2 * b9 + a3 * b8 + a4 * b7 + a5 * b6 + + // a6 * b5 + a7 * b4 + a8 * b3 + a9 * b2 + a10 * b1 + a11 * b0; + // s12 = a1 * b11 + a2 * b10 + a3 * b9 + a4 * b8 + a5 * b7 + a6 * b6 + + // a7 * b5 + a8 * b4 + a9 * b3 + a10 * b2 + a11 * b1; + // s13 = a2 * b11 + a3 * b10 + a4 * b9 + a5 * b8 + a6 * b7 + a7 * b6 + + // a8 * b5 + a9 * b4 + a10 * b3 + a11 * b2; + // s14 = a3 * b11 + a4 * b10 + a5 * b9 + a6 * b8 + a7 * b7 + a8 * b6 + + // a9 * b5 + a10 * b4 + a11 * b3; + // s15 = a4 * b11 + a5 * b10 + a6 * b9 + a7 * b8 + a8 * b7 + a9 * b6 + + // a10 * b5 + a11 * b4; + // s16 = + // a5 * b11 + a6 * b10 + a7 * b9 + a8 * b8 + a9 * b7 + a10 * b6 + a11 * b5; + // s17 = a6 * b11 + a7 * b10 + a8 * b9 + a9 * b8 + a10 * b7 + a11 * b6; + // s18 = a7 * b11 + a8 * b10 + a9 * b9 + a10 * b8 + a11 * b7; + // s19 = a8 * b11 + a9 * b10 + a10 * b9 + a11 * b8; + // s20 = a9 * b11 + a10 * b10 + a11 * b9; + // s21 = a10 * b11 + a11 * b10; + // s22 = a11 * b11; + // s23 = 0; + $s0 = self::mul($a0, $b0, 22); + $s1 = self::mul($a0, $b1, 22) + self::mul($a1, $b0, 22); + $s2 = self::mul($a0, $b2, 22) + self::mul($a1, $b1, 22) + self::mul($a2, $b0, 22); + $s3 = self::mul($a0, $b3, 22) + self::mul($a1, $b2, 22) + self::mul($a2, $b1, 22) + self::mul($a3, $b0, 22); + $s4 = self::mul($a0, $b4, 22) + self::mul($a1, $b3, 22) + self::mul($a2, $b2, 22) + self::mul($a3, $b1, 22) + + self::mul($a4, $b0, 22); + $s5 = self::mul($a0, $b5, 22) + self::mul($a1, $b4, 22) + self::mul($a2, $b3, 22) + self::mul($a3, $b2, 22) + + self::mul($a4, $b1, 22) + self::mul($a5, $b0, 22); + $s6 = self::mul($a0, $b6, 22) + self::mul($a1, $b5, 22) + self::mul($a2, $b4, 22) + self::mul($a3, $b3, 22) + + self::mul($a4, $b2, 22) + self::mul($a5, $b1, 22) + self::mul($a6, $b0, 22); + $s7 = self::mul($a0, $b7, 22) + self::mul($a1, $b6, 22) + self::mul($a2, $b5, 22) + self::mul($a3, $b4, 22) + + self::mul($a4, $b3, 22) + self::mul($a5, $b2, 22) + self::mul($a6, $b1, 22) + self::mul($a7, $b0, 22); + $s8 = self::mul($a0, $b8, 22) + self::mul($a1, $b7, 22) + self::mul($a2, $b6, 22) + self::mul($a3, $b5, 22) + + self::mul($a4, $b4, 22) + self::mul($a5, $b3, 22) + self::mul($a6, $b2, 22) + self::mul($a7, $b1, 22) + + self::mul($a8, $b0, 22); + $s9 = self::mul($a0, $b9, 22) + self::mul($a1, $b8, 22) + self::mul($a2, $b7, 22) + self::mul($a3, $b6, 22) + + self::mul($a4, $b5, 22) + self::mul($a5, $b4, 22) + self::mul($a6, $b3, 22) + self::mul($a7, $b2, 22) + + self::mul($a8, $b1, 22) + self::mul($a9, $b0, 22); + $s10 = self::mul($a0, $b10, 22) + self::mul($a1, $b9, 22) + self::mul($a2, $b8, 22) + self::mul($a3, $b7, 22) + + self::mul($a4, $b6, 22) + self::mul($a5, $b5, 22) + self::mul($a6, $b4, 22) + self::mul($a7, $b3, 22) + + self::mul($a8, $b2, 22) + self::mul($a9, $b1, 22) + self::mul($a10, $b0, 22); + $s11 = self::mul($a0, $b11, 22) + self::mul($a1, $b10, 22) + self::mul($a2, $b9, 22) + self::mul($a3, $b8, 22) + + self::mul($a4, $b7, 22) + self::mul($a5, $b6, 22) + self::mul($a6, $b5, 22) + self::mul($a7, $b4, 22) + + self::mul($a8, $b3, 22) + self::mul($a9, $b2, 22) + self::mul($a10, $b1, 22) + self::mul($a11, $b0, 22); + $s12 = self::mul($a1, $b11, 22) + self::mul($a2, $b10, 22) + self::mul($a3, $b9, 22) + self::mul($a4, $b8, 22) + + self::mul($a5, $b7, 22) + self::mul($a6, $b6, 22) + self::mul($a7, $b5, 22) + self::mul($a8, $b4, 22) + + self::mul($a9, $b3, 22) + self::mul($a10, $b2, 22) + self::mul($a11, $b1, 22); + $s13 = self::mul($a2, $b11, 22) + self::mul($a3, $b10, 22) + self::mul($a4, $b9, 22) + self::mul($a5, $b8, 22) + + self::mul($a6, $b7, 22) + self::mul($a7, $b6, 22) + self::mul($a8, $b5, 22) + self::mul($a9, $b4, 22) + + self::mul($a10, $b3, 22) + self::mul($a11, $b2, 22); + $s14 = self::mul($a3, $b11, 22) + self::mul($a4, $b10, 22) + self::mul($a5, $b9, 22) + self::mul($a6, $b8, 22) + + self::mul($a7, $b7, 22) + self::mul($a8, $b6, 22) + self::mul($a9, $b5, 22) + self::mul($a10, $b4, 22) + + self::mul($a11, $b3, 22); + $s15 = self::mul($a4, $b11, 22) + self::mul($a5, $b10, 22) + self::mul($a6, $b9, 22) + self::mul($a7, $b8, 22) + + self::mul($a8, $b7, 22) + self::mul($a9, $b6, 22) + self::mul($a10, $b5, 22) + self::mul($a11, $b4, 22); + $s16 = + self::mul($a5, $b11, 22) + self::mul($a6, $b10, 22) + self::mul($a7, $b9, 22) + self::mul($a8, $b8, 22) + + self::mul($a9, $b7, 22) + self::mul($a10, $b6, 22) + self::mul($a11, $b5, 22); + $s17 = self::mul($a6, $b11, 22) + self::mul($a7, $b10, 22) + self::mul($a8, $b9, 22) + self::mul($a9, $b8, 22) + + self::mul($a10, $b7, 22) + self::mul($a11, $b6, 22); + $s18 = self::mul($a7, $b11, 22) + self::mul($a8, $b10, 22) + self::mul($a9, $b9, 22) + self::mul($a10, $b8, 22) + + self::mul($a11, $b7, 22); + $s19 = self::mul($a8, $b11, 22) + self::mul($a9, $b10, 22) + self::mul($a10, $b9, 22) + + self::mul($a11, $b8, 22); + $s20 = self::mul($a9, $b11, 22) + self::mul($a10, $b10, 22) + self::mul($a11, $b9, 22); + $s21 = self::mul($a10, $b11, 22) + self::mul($a11, $b10, 22); + $s22 = self::mul($a11, $b11, 22); + $s23 = 0; + + // carry0 = (s0 + (int64_t) (1L << 20)) >> 21; + // s1 += carry0; + // s0 -= carry0 * ((uint64_t) 1L << 21); + $carry0 = ($s0 + (1 << 20)) >> 21; + $s1 += $carry0; + $s0 -= $carry0 << 21; + // carry2 = (s2 + (int64_t) (1L << 20)) >> 21; + // s3 += carry2; + // s2 -= carry2 * ((uint64_t) 1L << 21); + $carry2 = ($s2 + (1 << 20)) >> 21; + $s3 += $carry2; + $s2 -= $carry2 << 21; + // carry4 = (s4 + (int64_t) (1L << 20)) >> 21; + // s5 += carry4; + // s4 -= carry4 * ((uint64_t) 1L << 21); + $carry4 = ($s4 + (1 << 20)) >> 21; + $s5 += $carry4; + $s4 -= $carry4 << 21; + // carry6 = (s6 + (int64_t) (1L << 20)) >> 21; + // s7 += carry6; + // s6 -= carry6 * ((uint64_t) 1L << 21); + $carry6 = ($s6 + (1 << 20)) >> 21; + $s7 += $carry6; + $s6 -= $carry6 << 21; + // carry8 = (s8 + (int64_t) (1L << 20)) >> 21; + // s9 += carry8; + // s8 -= carry8 * ((uint64_t) 1L << 21); + $carry8 = ($s8 + (1 << 20)) >> 21; + $s9 += $carry8; + $s8 -= $carry8 << 21; + // carry10 = (s10 + (int64_t) (1L << 20)) >> 21; + // s11 += carry10; + // s10 -= carry10 * ((uint64_t) 1L << 21); + $carry10 = ($s10 + (1 << 20)) >> 21; + $s11 += $carry10; + $s10 -= $carry10 << 21; + // carry12 = (s12 + (int64_t) (1L << 20)) >> 21; + // s13 += carry12; + // s12 -= carry12 * ((uint64_t) 1L << 21); + $carry12 = ($s12 + (1 << 20)) >> 21; + $s13 += $carry12; + $s12 -= $carry12 << 21; + // carry14 = (s14 + (int64_t) (1L << 20)) >> 21; + // s15 += carry14; + // s14 -= carry14 * ((uint64_t) 1L << 21); + $carry14 = ($s14 + (1 << 20)) >> 21; + $s15 += $carry14; + $s14 -= $carry14 << 21; + // carry16 = (s16 + (int64_t) (1L << 20)) >> 21; + // s17 += carry16; + // s16 -= carry16 * ((uint64_t) 1L << 21); + $carry16 = ($s16 + (1 << 20)) >> 21; + $s17 += $carry16; + $s16 -= $carry16 << 21; + // carry18 = (s18 + (int64_t) (1L << 20)) >> 21; + // s19 += carry18; + // s18 -= carry18 * ((uint64_t) 1L << 21); + $carry18 = ($s18 + (1 << 20)) >> 21; + $s19 += $carry18; + $s18 -= $carry18 << 21; + // carry20 = (s20 + (int64_t) (1L << 20)) >> 21; + // s21 += carry20; + // s20 -= carry20 * ((uint64_t) 1L << 21); + $carry20 = ($s20 + (1 << 20)) >> 21; + $s21 += $carry20; + $s20 -= $carry20 << 21; + // carry22 = (s22 + (int64_t) (1L << 20)) >> 21; + // s23 += carry22; + // s22 -= carry22 * ((uint64_t) 1L << 21); + $carry22 = ($s22 + (1 << 20)) >> 21; + $s23 += $carry22; + $s22 -= $carry22 << 21; + + // carry1 = (s1 + (int64_t) (1L << 20)) >> 21; + // s2 += carry1; + // s1 -= carry1 * ((uint64_t) 1L << 21); + $carry1 = ($s1 + (1 << 20)) >> 21; + $s2 += $carry1; + $s1 -= $carry1 << 21; + // carry3 = (s3 + (int64_t) (1L << 20)) >> 21; + // s4 += carry3; + // s3 -= carry3 * ((uint64_t) 1L << 21); + $carry3 = ($s3 + (1 << 20)) >> 21; + $s4 += $carry3; + $s3 -= $carry3 << 21; + // carry5 = (s5 + (int64_t) (1L << 20)) >> 21; + // s6 += carry5; + // s5 -= carry5 * ((uint64_t) 1L << 21); + $carry5 = ($s5 + (1 << 20)) >> 21; + $s6 += $carry5; + $s5 -= $carry5 << 21; + // carry7 = (s7 + (int64_t) (1L << 20)) >> 21; + // s8 += carry7; + // s7 -= carry7 * ((uint64_t) 1L << 21); + $carry7 = ($s7 + (1 << 20)) >> 21; + $s8 += $carry7; + $s7 -= $carry7 << 21; + // carry9 = (s9 + (int64_t) (1L << 20)) >> 21; + // s10 += carry9; + // s9 -= carry9 * ((uint64_t) 1L << 21); + $carry9 = ($s9 + (1 << 20)) >> 21; + $s10 += $carry9; + $s9 -= $carry9 << 21; + // carry11 = (s11 + (int64_t) (1L << 20)) >> 21; + // s12 += carry11; + // s11 -= carry11 * ((uint64_t) 1L << 21); + $carry11 = ($s11 + (1 << 20)) >> 21; + $s12 += $carry11; + $s11 -= $carry11 << 21; + // carry13 = (s13 + (int64_t) (1L << 20)) >> 21; + // s14 += carry13; + // s13 -= carry13 * ((uint64_t) 1L << 21); + $carry13 = ($s13 + (1 << 20)) >> 21; + $s14 += $carry13; + $s13 -= $carry13 << 21; + // carry15 = (s15 + (int64_t) (1L << 20)) >> 21; + // s16 += carry15; + // s15 -= carry15 * ((uint64_t) 1L << 21); + $carry15 = ($s15 + (1 << 20)) >> 21; + $s16 += $carry15; + $s15 -= $carry15 << 21; + // carry17 = (s17 + (int64_t) (1L << 20)) >> 21; + // s18 += carry17; + // s17 -= carry17 * ((uint64_t) 1L << 21); + $carry17 = ($s17 + (1 << 20)) >> 21; + $s18 += $carry17; + $s17 -= $carry17 << 21; + // carry19 = (s19 + (int64_t) (1L << 20)) >> 21; + // s20 += carry19; + // s19 -= carry19 * ((uint64_t) 1L << 21); + $carry19 = ($s19 + (1 << 20)) >> 21; + $s20 += $carry19; + $s19 -= $carry19 << 21; + // carry21 = (s21 + (int64_t) (1L << 20)) >> 21; + // s22 += carry21; + // s21 -= carry21 * ((uint64_t) 1L << 21); + $carry21 = ($s21 + (1 << 20)) >> 21; + $s22 += $carry21; + $s21 -= $carry21 << 21; + + // s11 += s23 * 666643; + // s12 += s23 * 470296; + // s13 += s23 * 654183; + // s14 -= s23 * 997805; + // s15 += s23 * 136657; + // s16 -= s23 * 683901; + $s11 += self::mul($s23, 666643, 20); + $s12 += self::mul($s23, 470296, 19); + $s13 += self::mul($s23, 654183, 20); + $s14 -= self::mul($s23, 997805, 20); + $s15 += self::mul($s23, 136657, 18); + $s16 -= self::mul($s23, 683901, 20); + + // s10 += s22 * 666643; + // s11 += s22 * 470296; + // s12 += s22 * 654183; + // s13 -= s22 * 997805; + // s14 += s22 * 136657; + // s15 -= s22 * 683901; + $s10 += self::mul($s22, 666643, 20); + $s11 += self::mul($s22, 470296, 19); + $s12 += self::mul($s22, 654183, 20); + $s13 -= self::mul($s22, 997805, 20); + $s14 += self::mul($s22, 136657, 18); + $s15 -= self::mul($s22, 683901, 20); + + // s9 += s21 * 666643; + // s10 += s21 * 470296; + // s11 += s21 * 654183; + // s12 -= s21 * 997805; + // s13 += s21 * 136657; + // s14 -= s21 * 683901; + $s9 += self::mul($s21, 666643, 20); + $s10 += self::mul($s21, 470296, 19); + $s11 += self::mul($s21, 654183, 20); + $s12 -= self::mul($s21, 997805, 20); + $s13 += self::mul($s21, 136657, 18); + $s14 -= self::mul($s21, 683901, 20); + + // s8 += s20 * 666643; + // s9 += s20 * 470296; + // s10 += s20 * 654183; + // s11 -= s20 * 997805; + // s12 += s20 * 136657; + // s13 -= s20 * 683901; + $s8 += self::mul($s20, 666643, 20); + $s9 += self::mul($s20, 470296, 19); + $s10 += self::mul($s20, 654183, 20); + $s11 -= self::mul($s20, 997805, 20); + $s12 += self::mul($s20, 136657, 18); + $s13 -= self::mul($s20, 683901, 20); + + // s7 += s19 * 666643; + // s8 += s19 * 470296; + // s9 += s19 * 654183; + // s10 -= s19 * 997805; + // s11 += s19 * 136657; + // s12 -= s19 * 683901; + $s7 += self::mul($s19, 666643, 20); + $s8 += self::mul($s19, 470296, 19); + $s9 += self::mul($s19, 654183, 20); + $s10 -= self::mul($s19, 997805, 20); + $s11 += self::mul($s19, 136657, 18); + $s12 -= self::mul($s19, 683901, 20); + + // s6 += s18 * 666643; + // s7 += s18 * 470296; + // s8 += s18 * 654183; + // s9 -= s18 * 997805; + // s10 += s18 * 136657; + // s11 -= s18 * 683901; + $s6 += self::mul($s18, 666643, 20); + $s7 += self::mul($s18, 470296, 19); + $s8 += self::mul($s18, 654183, 20); + $s9 -= self::mul($s18, 997805, 20); + $s10 += self::mul($s18, 136657, 18); + $s11 -= self::mul($s18, 683901, 20); + + // carry6 = (s6 + (int64_t) (1L << 20)) >> 21; + // s7 += carry6; + // s6 -= carry6 * ((uint64_t) 1L << 21); + $carry6 = ($s6 + (1 << 20)) >> 21; + $s7 += $carry6; + $s6 -= $carry6 << 21; + // carry8 = (s8 + (int64_t) (1L << 20)) >> 21; + // s9 += carry8; + // s8 -= carry8 * ((uint64_t) 1L << 21); + $carry8 = ($s8 + (1 << 20)) >> 21; + $s9 += $carry8; + $s8 -= $carry8 << 21; + // carry10 = (s10 + (int64_t) (1L << 20)) >> 21; + // s11 += carry10; + // s10 -= carry10 * ((uint64_t) 1L << 21); + $carry10 = ($s10 + (1 << 20)) >> 21; + $s11 += $carry10; + $s10 -= $carry10 << 21; + // carry12 = (s12 + (int64_t) (1L << 20)) >> 21; + // s13 += carry12; + // s12 -= carry12 * ((uint64_t) 1L << 21); + $carry12 = ($s12 + (1 << 20)) >> 21; + $s13 += $carry12; + $s12 -= $carry12 << 21; + // carry14 = (s14 + (int64_t) (1L << 20)) >> 21; + // s15 += carry14; + // s14 -= carry14 * ((uint64_t) 1L << 21); + $carry14 = ($s14 + (1 << 20)) >> 21; + $s15 += $carry14; + $s14 -= $carry14 << 21; + // carry16 = (s16 + (int64_t) (1L << 20)) >> 21; + // s17 += carry16; + // s16 -= carry16 * ((uint64_t) 1L << 21); + $carry16 = ($s16 + (1 << 20)) >> 21; + $s17 += $carry16; + $s16 -= $carry16 << 21; + + // carry7 = (s7 + (int64_t) (1L << 20)) >> 21; + // s8 += carry7; + // s7 -= carry7 * ((uint64_t) 1L << 21); + $carry7 = ($s7 + (1 << 20)) >> 21; + $s8 += $carry7; + $s7 -= $carry7 << 21; + // carry9 = (s9 + (int64_t) (1L << 20)) >> 21; + // s10 += carry9; + // s9 -= carry9 * ((uint64_t) 1L << 21); + $carry9 = ($s9 + (1 << 20)) >> 21; + $s10 += $carry9; + $s9 -= $carry9 << 21; + // carry11 = (s11 + (int64_t) (1L << 20)) >> 21; + // s12 += carry11; + // s11 -= carry11 * ((uint64_t) 1L << 21); + $carry11 = ($s11 + (1 << 20)) >> 21; + $s12 += $carry11; + $s11 -= $carry11 << 21; + // carry13 = (s13 + (int64_t) (1L << 20)) >> 21; + // s14 += carry13; + // s13 -= carry13 * ((uint64_t) 1L << 21); + $carry13 = ($s13 + (1 << 20)) >> 21; + $s14 += $carry13; + $s13 -= $carry13 << 21; + // carry15 = (s15 + (int64_t) (1L << 20)) >> 21; + // s16 += carry15; + // s15 -= carry15 * ((uint64_t) 1L << 21); + $carry15 = ($s15 + (1 << 20)) >> 21; + $s16 += $carry15; + $s15 -= $carry15 << 21; + + // s5 += s17 * 666643; + // s6 += s17 * 470296; + // s7 += s17 * 654183; + // s8 -= s17 * 997805; + // s9 += s17 * 136657; + // s10 -= s17 * 683901; + $s5 += self::mul($s17, 666643, 20); + $s6 += self::mul($s17, 470296, 19); + $s7 += self::mul($s17, 654183, 20); + $s8 -= self::mul($s17, 997805, 20); + $s9 += self::mul($s17, 136657, 18); + $s10 -= self::mul($s17, 683901, 20); + + // s4 += s16 * 666643; + // s5 += s16 * 470296; + // s6 += s16 * 654183; + // s7 -= s16 * 997805; + // s8 += s16 * 136657; + // s9 -= s16 * 683901; + $s4 += self::mul($s16, 666643, 20); + $s5 += self::mul($s16, 470296, 19); + $s6 += self::mul($s16, 654183, 20); + $s7 -= self::mul($s16, 997805, 20); + $s8 += self::mul($s16, 136657, 18); + $s9 -= self::mul($s16, 683901, 20); + + // s3 += s15 * 666643; + // s4 += s15 * 470296; + // s5 += s15 * 654183; + // s6 -= s15 * 997805; + // s7 += s15 * 136657; + // s8 -= s15 * 683901; + $s3 += self::mul($s15, 666643, 20); + $s4 += self::mul($s15, 470296, 19); + $s5 += self::mul($s15, 654183, 20); + $s6 -= self::mul($s15, 997805, 20); + $s7 += self::mul($s15, 136657, 18); + $s8 -= self::mul($s15, 683901, 20); + + // s2 += s14 * 666643; + // s3 += s14 * 470296; + // s4 += s14 * 654183; + // s5 -= s14 * 997805; + // s6 += s14 * 136657; + // s7 -= s14 * 683901; + $s2 += self::mul($s14, 666643, 20); + $s3 += self::mul($s14, 470296, 19); + $s4 += self::mul($s14, 654183, 20); + $s5 -= self::mul($s14, 997805, 20); + $s6 += self::mul($s14, 136657, 18); + $s7 -= self::mul($s14, 683901, 20); + + // s1 += s13 * 666643; + // s2 += s13 * 470296; + // s3 += s13 * 654183; + // s4 -= s13 * 997805; + // s5 += s13 * 136657; + // s6 -= s13 * 683901; + $s1 += self::mul($s13, 666643, 20); + $s2 += self::mul($s13, 470296, 19); + $s3 += self::mul($s13, 654183, 20); + $s4 -= self::mul($s13, 997805, 20); + $s5 += self::mul($s13, 136657, 18); + $s6 -= self::mul($s13, 683901, 20); + + // s0 += s12 * 666643; + // s1 += s12 * 470296; + // s2 += s12 * 654183; + // s3 -= s12 * 997805; + // s4 += s12 * 136657; + // s5 -= s12 * 683901; + // s12 = 0; + $s0 += self::mul($s12, 666643, 20); + $s1 += self::mul($s12, 470296, 19); + $s2 += self::mul($s12, 654183, 20); + $s3 -= self::mul($s12, 997805, 20); + $s4 += self::mul($s12, 136657, 18); + $s5 -= self::mul($s12, 683901, 20); + $s12 = 0; + + // carry0 = (s0 + (int64_t) (1L << 20)) >> 21; + // s1 += carry0; + // s0 -= carry0 * ((uint64_t) 1L << 21); + $carry0 = ($s0 + (1 << 20)) >> 21; + $s1 += $carry0; + $s0 -= $carry0 << 21; + // carry2 = (s2 + (int64_t) (1L << 20)) >> 21; + // s3 += carry2; + // s2 -= carry2 * ((uint64_t) 1L << 21); + $carry2 = ($s2 + (1 << 20)) >> 21; + $s3 += $carry2; + $s2 -= $carry2 << 21; + // carry4 = (s4 + (int64_t) (1L << 20)) >> 21; + // s5 += carry4; + // s4 -= carry4 * ((uint64_t) 1L << 21); + $carry4 = ($s4 + (1 << 20)) >> 21; + $s5 += $carry4; + $s4 -= $carry4 << 21; + // carry6 = (s6 + (int64_t) (1L << 20)) >> 21; + // s7 += carry6; + // s6 -= carry6 * ((uint64_t) 1L << 21); + $carry6 = ($s6 + (1 << 20)) >> 21; + $s7 += $carry6; + $s6 -= $carry6 << 21; + // carry8 = (s8 + (int64_t) (1L << 20)) >> 21; + // s9 += carry8; + // s8 -= carry8 * ((uint64_t) 1L << 21); + $carry8 = ($s8 + (1 << 20)) >> 21; + $s9 += $carry8; + $s8 -= $carry8 << 21; + // carry10 = (s10 + (int64_t) (1L << 20)) >> 21; + // s11 += carry10; + // s10 -= carry10 * ((uint64_t) 1L << 21); + $carry10 = ($s10 + (1 << 20)) >> 21; + $s11 += $carry10; + $s10 -= $carry10 << 21; + + // carry1 = (s1 + (int64_t) (1L << 20)) >> 21; + // s2 += carry1; + // s1 -= carry1 * ((uint64_t) 1L << 21); + $carry1 = ($s1 + (1 << 20)) >> 21; + $s2 += $carry1; + $s1 -= $carry1 << 21; + // carry3 = (s3 + (int64_t) (1L << 20)) >> 21; + // s4 += carry3; + // s3 -= carry3 * ((uint64_t) 1L << 21); + $carry3 = ($s3 + (1 << 20)) >> 21; + $s4 += $carry3; + $s3 -= $carry3 << 21; + // carry5 = (s5 + (int64_t) (1L << 20)) >> 21; + // s6 += carry5; + // s5 -= carry5 * ((uint64_t) 1L << 21); + $carry5 = ($s5 + (1 << 20)) >> 21; + $s6 += $carry5; + $s5 -= $carry5 << 21; + // carry7 = (s7 + (int64_t) (1L << 20)) >> 21; + // s8 += carry7; + // s7 -= carry7 * ((uint64_t) 1L << 21); + $carry7 = ($s7 + (1 << 20)) >> 21; + $s8 += $carry7; + $s7 -= $carry7 << 21; + // carry9 = (s9 + (int64_t) (1L << 20)) >> 21; + // s10 += carry9; + // s9 -= carry9 * ((uint64_t) 1L << 21); + $carry9 = ($s9 + (1 << 20)) >> 21; + $s10 += $carry9; + $s9 -= $carry9 << 21; + // carry11 = (s11 + (int64_t) (1L << 20)) >> 21; + // s12 += carry11; + // s11 -= carry11 * ((uint64_t) 1L << 21); + $carry11 = ($s11 + (1 << 20)) >> 21; + $s12 += $carry11; + $s11 -= $carry11 << 21; + + // s0 += s12 * 666643; + // s1 += s12 * 470296; + // s2 += s12 * 654183; + // s3 -= s12 * 997805; + // s4 += s12 * 136657; + // s5 -= s12 * 683901; + // s12 = 0; + $s0 += self::mul($s12, 666643, 20); + $s1 += self::mul($s12, 470296, 19); + $s2 += self::mul($s12, 654183, 20); + $s3 -= self::mul($s12, 997805, 20); + $s4 += self::mul($s12, 136657, 18); + $s5 -= self::mul($s12, 683901, 20); + $s12 = 0; + + // carry0 = s0 >> 21; + // s1 += carry0; + // s0 -= carry0 * ((uint64_t) 1L << 21); + $carry0 = $s0 >> 21; + $s1 += $carry0; + $s0 -= $carry0 << 21; + // carry1 = s1 >> 21; + // s2 += carry1; + // s1 -= carry1 * ((uint64_t) 1L << 21); + $carry1 = $s1 >> 21; + $s2 += $carry1; + $s1 -= $carry1 << 21; + // carry2 = s2 >> 21; + // s3 += carry2; + // s2 -= carry2 * ((uint64_t) 1L << 21); + $carry2 = $s2 >> 21; + $s3 += $carry2; + $s2 -= $carry2 << 21; + // carry3 = s3 >> 21; + // s4 += carry3; + // s3 -= carry3 * ((uint64_t) 1L << 21); + $carry3 = $s3 >> 21; + $s4 += $carry3; + $s3 -= $carry3 << 21; + // carry4 = s4 >> 21; + // s5 += carry4; + // s4 -= carry4 * ((uint64_t) 1L << 21); + $carry4 = $s4 >> 21; + $s5 += $carry4; + $s4 -= $carry4 << 21; + // carry5 = s5 >> 21; + // s6 += carry5; + // s5 -= carry5 * ((uint64_t) 1L << 21); + $carry5 = $s5 >> 21; + $s6 += $carry5; + $s5 -= $carry5 << 21; + // carry6 = s6 >> 21; + // s7 += carry6; + // s6 -= carry6 * ((uint64_t) 1L << 21); + $carry6 = $s6 >> 21; + $s7 += $carry6; + $s6 -= $carry6 << 21; + // carry7 = s7 >> 21; + // s8 += carry7; + // s7 -= carry7 * ((uint64_t) 1L << 21); + $carry7 = $s7 >> 21; + $s8 += $carry7; + $s7 -= $carry7 << 21; + // carry8 = s8 >> 21; + // s9 += carry8; + // s8 -= carry8 * ((uint64_t) 1L << 21); + $carry8 = $s8 >> 21; + $s9 += $carry8; + $s8 -= $carry8 << 21; + // carry9 = s9 >> 21; + // s10 += carry9; + // s9 -= carry9 * ((uint64_t) 1L << 21); + $carry9 = $s9 >> 21; + $s10 += $carry9; + $s9 -= $carry9 << 21; + // carry10 = s10 >> 21; + // s11 += carry10; + // s10 -= carry10 * ((uint64_t) 1L << 21); + $carry10 = $s10 >> 21; + $s11 += $carry10; + $s10 -= $carry10 << 21; + // carry11 = s11 >> 21; + // s12 += carry11; + // s11 -= carry11 * ((uint64_t) 1L << 21); + $carry11 = $s11 >> 21; + $s12 += $carry11; + $s11 -= $carry11 << 21; + + // s0 += s12 * 666643; + // s1 += s12 * 470296; + // s2 += s12 * 654183; + // s3 -= s12 * 997805; + // s4 += s12 * 136657; + // s5 -= s12 * 683901; + $s0 += self::mul($s12, 666643, 20); + $s1 += self::mul($s12, 470296, 19); + $s2 += self::mul($s12, 654183, 20); + $s3 -= self::mul($s12, 997805, 20); + $s4 += self::mul($s12, 136657, 18); + $s5 -= self::mul($s12, 683901, 20); + + // carry0 = s0 >> 21; + // s1 += carry0; + // s0 -= carry0 * ((uint64_t) 1L << 21); + $carry0 = $s0 >> 21; + $s1 += $carry0; + $s0 -= $carry0 << 21; + // carry1 = s1 >> 21; + // s2 += carry1; + // s1 -= carry1 * ((uint64_t) 1L << 21); + $carry1 = $s1 >> 21; + $s2 += $carry1; + $s1 -= $carry1 << 21; + // carry2 = s2 >> 21; + // s3 += carry2; + // s2 -= carry2 * ((uint64_t) 1L << 21); + $carry2 = $s2 >> 21; + $s3 += $carry2; + $s2 -= $carry2 << 21; + // carry3 = s3 >> 21; + // s4 += carry3; + // s3 -= carry3 * ((uint64_t) 1L << 21); + $carry3 = $s3 >> 21; + $s4 += $carry3; + $s3 -= $carry3 << 21; + // carry4 = s4 >> 21; + // s5 += carry4; + // s4 -= carry4 * ((uint64_t) 1L << 21); + $carry4 = $s4 >> 21; + $s5 += $carry4; + $s4 -= $carry4 << 21; + // carry5 = s5 >> 21; + // s6 += carry5; + // s5 -= carry5 * ((uint64_t) 1L << 21); + $carry5 = $s5 >> 21; + $s6 += $carry5; + $s5 -= $carry5 << 21; + // carry6 = s6 >> 21; + // s7 += carry6; + // s6 -= carry6 * ((uint64_t) 1L << 21); + $carry6 = $s6 >> 21; + $s7 += $carry6; + $s6 -= $carry6 << 21; + // carry7 = s7 >> 21; + // s8 += carry7; + // s7 -= carry7 * ((uint64_t) 1L << 21); + $carry7 = $s7 >> 21; + $s8 += $carry7; + $s7 -= $carry7 << 21; + // carry8 = s8 >> 21; + // s9 += carry8; + // s8 -= carry8 * ((uint64_t) 1L << 21); + $carry8 = $s8 >> 21; + $s9 += $carry8; + $s8 -= $carry8 << 21; + // carry9 = s9 >> 21; + // s10 += carry9; + // s9 -= carry9 * ((uint64_t) 1L << 21); + $carry9 = $s9 >> 21; + $s10 += $carry9; + $s9 -= $carry9 << 21; + // carry10 = s10 >> 21; + // s11 += carry10; + // s10 -= carry10 * ((uint64_t) 1L << 21); + $carry10 = $s10 >> 21; + $s11 += $carry10; + $s10 -= $carry10 << 21; + + $s = array_fill(0, 32, 0); + // s[0] = s0 >> 0; + $s[0] = $s0 >> 0; + // s[1] = s0 >> 8; + $s[1] = $s0 >> 8; + // s[2] = (s0 >> 16) | (s1 * ((uint64_t) 1 << 5)); + $s[2] = ($s0 >> 16) | ($s1 << 5); + // s[3] = s1 >> 3; + $s[3] = $s1 >> 3; + // s[4] = s1 >> 11; + $s[4] = $s1 >> 11; + // s[5] = (s1 >> 19) | (s2 * ((uint64_t) 1 << 2)); + $s[5] = ($s1 >> 19) | ($s2 << 2); + // s[6] = s2 >> 6; + $s[6] = $s2 >> 6; + // s[7] = (s2 >> 14) | (s3 * ((uint64_t) 1 << 7)); + $s[7] = ($s2 >> 14) | ($s3 << 7); + // s[8] = s3 >> 1; + $s[8] = $s3 >> 1; + // s[9] = s3 >> 9; + $s[9] = $s3 >> 9; + // s[10] = (s3 >> 17) | (s4 * ((uint64_t) 1 << 4)); + $s[10] = ($s3 >> 17) | ($s4 << 4); + // s[11] = s4 >> 4; + $s[11] = $s4 >> 4; + // s[12] = s4 >> 12; + $s[12] = $s4 >> 12; + // s[13] = (s4 >> 20) | (s5 * ((uint64_t) 1 << 1)); + $s[13] = ($s4 >> 20) | ($s5 << 1); + // s[14] = s5 >> 7; + $s[14] = $s5 >> 7; + // s[15] = (s5 >> 15) | (s6 * ((uint64_t) 1 << 6)); + $s[15] = ($s5 >> 15) | ($s6 << 6); + // s[16] = s6 >> 2; + $s[16] = $s6 >> 2; + // s[17] = s6 >> 10; + $s[17] = $s6 >> 10; + // s[18] = (s6 >> 18) | (s7 * ((uint64_t) 1 << 3)); + $s[18] = ($s6 >> 18) | ($s7 << 3); + // s[19] = s7 >> 5; + $s[19] = $s7 >> 5; + // s[20] = s7 >> 13; + $s[20] = $s7 >> 13; + // s[21] = s8 >> 0; + $s[21] = $s8 >> 0; + // s[22] = s8 >> 8; + $s[22] = $s8 >> 8; + // s[23] = (s8 >> 16) | (s9 * ((uint64_t) 1 << 5)); + $s[23] = ($s8 >> 16) | ($s9 << 5); + // s[24] = s9 >> 3; + $s[24] = $s9 >> 3; + // s[25] = s9 >> 11; + $s[25] = $s9 >> 11; + // s[26] = (s9 >> 19) | (s10 * ((uint64_t) 1 << 2)); + $s[26] = ($s9 >> 19) | ($s10 << 2); + // s[27] = s10 >> 6; + $s[27] = $s10 >> 6; + // s[28] = (s10 >> 14) | (s11 * ((uint64_t) 1 << 7)); + $s[28] = ($s10 >> 14) | ($s11 << 7); + // s[29] = s11 >> 1; + $s[29] = $s11 >> 1; + // s[30] = s11 >> 9; + $s[30] = $s11 >> 9; + // s[31] = s11 >> 17; + $s[31] = $s11 >> 17; + return self::intArrayToString($s); + } + + /** + * @param string $s + * @return string + */ + public static function sc25519_sq($s) + { + return self::sc25519_mul($s, $s); + } + + /** + * @param string $s + * @param int $n + * @param string $a + * @return string + */ + public static function sc25519_sqmul($s, $n, $a) + { + for ($i = 0; $i < $n; ++$i) { + $s = self::sc25519_sq($s); + } + return self::sc25519_mul($s, $a); + } + + /** + * @param string $s + * @return string + */ + public static function sc25519_invert($s) + { + $_10 = self::sc25519_sq($s); + $_11 = self::sc25519_mul($s, $_10); + $_100 = self::sc25519_mul($s, $_11); + $_1000 = self::sc25519_sq($_100); + $_1010 = self::sc25519_mul($_10, $_1000); + $_1011 = self::sc25519_mul($s, $_1010); + $_10000 = self::sc25519_sq($_1000); + $_10110 = self::sc25519_sq($_1011); + $_100000 = self::sc25519_mul($_1010, $_10110); + $_100110 = self::sc25519_mul($_10000, $_10110); + $_1000000 = self::sc25519_sq($_100000); + $_1010000 = self::sc25519_mul($_10000, $_1000000); + $_1010011 = self::sc25519_mul($_11, $_1010000); + $_1100011 = self::sc25519_mul($_10000, $_1010011); + $_1100111 = self::sc25519_mul($_100, $_1100011); + $_1101011 = self::sc25519_mul($_100, $_1100111); + $_10010011 = self::sc25519_mul($_1000000, $_1010011); + $_10010111 = self::sc25519_mul($_100, $_10010011); + $_10111101 = self::sc25519_mul($_100110, $_10010111); + $_11010011 = self::sc25519_mul($_10110, $_10111101); + $_11100111 = self::sc25519_mul($_1010000, $_10010111); + $_11101011 = self::sc25519_mul($_100, $_11100111); + $_11110101 = self::sc25519_mul($_1010, $_11101011); + + $recip = self::sc25519_mul($_1011, $_11110101); + $recip = self::sc25519_sqmul($recip, 126, $_1010011); + $recip = self::sc25519_sqmul($recip, 9, $_10); + $recip = self::sc25519_mul($recip, $_11110101); + $recip = self::sc25519_sqmul($recip, 7, $_1100111); + $recip = self::sc25519_sqmul($recip, 9, $_11110101); + $recip = self::sc25519_sqmul($recip, 11, $_10111101); + $recip = self::sc25519_sqmul($recip, 8, $_11100111); + $recip = self::sc25519_sqmul($recip, 9, $_1101011); + $recip = self::sc25519_sqmul($recip, 6, $_1011); + $recip = self::sc25519_sqmul($recip, 14, $_10010011); + $recip = self::sc25519_sqmul($recip, 10, $_1100011); + $recip = self::sc25519_sqmul($recip, 9, $_10010111); + $recip = self::sc25519_sqmul($recip, 10, $_11110101); + $recip = self::sc25519_sqmul($recip, 8, $_11010011); + return self::sc25519_sqmul($recip, 8, $_11101011); + } + + /** + * @param string $s + * @return string + */ + public static function clamp($s) + { + $s_ = self::stringToIntArray($s); + $s_[0] &= 248; + $s_[31] |= 64; + $s_[31] &= 128; + return self::intArrayToString($s_); + } + + /** + * Ensure limbs are less than 28 bits long to prevent float promotion. + * + * This uses a constant-time conditional swap under the hood. + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $f + * @return ParagonIE_Sodium_Core_Curve25519_Fe + */ + public static function fe_normalize(ParagonIE_Sodium_Core_Curve25519_Fe $f) + { + $x = (PHP_INT_SIZE << 3) - 1; // 31 or 63 + + $g = self::fe_copy($f); + for ($i = 0; $i < 10; ++$i) { + $mask = -(($g[$i] >> $x) & 1); + + /* + * Get two candidate normalized values for $g[$i], depending on the sign of $g[$i]: + */ + $a = $g[$i] & 0x7ffffff; + $b = -((-$g[$i]) & 0x7ffffff); + + /* + * Return the appropriate candidate value, based on the sign of the original input: + * + * The following is equivalent to this ternary: + * + * $g[$i] = (($g[$i] >> $x) & 1) ? $a : $b; + * + * Except what's written doesn't contain timing leaks. + */ + $g[$i] = ($a ^ (($a ^ $b) & $mask)); + } + return $g; + } +} diff --git a/vendor/paragonie/sodium_compat/src/Core/Curve25519/Fe.php b/vendor/paragonie/sodium_compat/src/Core/Curve25519/Fe.php index 64c489a..5270965 100644 --- a/vendor/paragonie/sodium_compat/src/Core/Curve25519/Fe.php +++ b/vendor/paragonie/sodium_compat/src/Core/Curve25519/Fe.php @@ -60,6 +60,7 @@ class ParagonIE_Sodium_Core_Curve25519_Fe implements ArrayAccess * @return void * @psalm-suppress MixedArrayOffset */ + #[ReturnTypeWillChange] public function offsetSet($offset, $value) { if (!is_int($value)) { @@ -79,6 +80,7 @@ class ParagonIE_Sodium_Core_Curve25519_Fe implements ArrayAccess * @return bool * @psalm-suppress MixedArrayOffset */ + #[ReturnTypeWillChange] public function offsetExists($offset) { return isset($this->container[$offset]); @@ -91,6 +93,7 @@ class ParagonIE_Sodium_Core_Curve25519_Fe implements ArrayAccess * @return void * @psalm-suppress MixedArrayOffset */ + #[ReturnTypeWillChange] public function offsetUnset($offset) { unset($this->container[$offset]); @@ -103,6 +106,7 @@ class ParagonIE_Sodium_Core_Curve25519_Fe implements ArrayAccess * @return int * @psalm-suppress MixedArrayOffset */ + #[ReturnTypeWillChange] public function offsetGet($offset) { if (!isset($this->container[$offset])) { diff --git a/vendor/paragonie/sodium_compat/src/Core/Curve25519/H.php b/vendor/paragonie/sodium_compat/src/Core/Curve25519/H.php index adab63e..a2fbbf9 100644 --- a/vendor/paragonie/sodium_compat/src/Core/Curve25519/H.php +++ b/vendor/paragonie/sodium_compat/src/Core/Curve25519/H.php @@ -1,1549 +1,1549 @@ -<?php
-
-if (class_exists('ParagonIE_Sodium_Core_Curve25519_H', false)) {
- return;
-}
-
-/**
- * Class ParagonIE_Sodium_Core_Curve25519_H
- *
- * This just contains the constants in the ref10/base.h file
- */
-class ParagonIE_Sodium_Core_Curve25519_H extends ParagonIE_Sodium_Core_Util
-{
- /**
- * See: libsodium's crypto_core/curve25519/ref10/base.h
- *
- * @var array<int, array<int, array<int, array<int, int>>>> Basically, int[32][8][3][10]
- */
- protected static $base = array(
- array(
- array(
- array(25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605),
- array(-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378),
- array(-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546),
- ),
- array(
- array(-12815894, -12976347, -21581243, 11784320, -25355658, -2750717, -11717903, -3814571, -358445, -10211303),
- array(-21703237, 6903825, 27185491, 6451973, -29577724, -9554005, -15616551, 11189268, -26829678, -5319081),
- array(26966642, 11152617, 32442495, 15396054, 14353839, -12752335, -3128826, -9541118, -15472047, -4166697),
- ),
- array(
- array(15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024),
- array(16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574),
- array(30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357),
- ),
- array(
- array(-17036878, 13921892, 10945806, -6033431, 27105052, -16084379, -28926210, 15006023, 3284568, -6276540),
- array(23599295, -8306047, -11193664, -7687416, 13236774, 10506355, 7464579, 9656445, 13059162, 10374397),
- array(7798556, 16710257, 3033922, 2874086, 28997861, 2835604, 32406664, -3839045, -641708, -101325),
- ),
- array(
- array(10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380),
- array(4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306),
- array(19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942),
- ),
- array(
- array(-15371964, -12862754, 32573250, 4720197, -26436522, 5875511, -19188627, -15224819, -9818940, -12085777),
- array(-8549212, 109983, 15149363, 2178705, 22900618, 4543417, 3044240, -15689887, 1762328, 14866737),
- array(-18199695, -15951423, -10473290, 1707278, -17185920, 3916101, -28236412, 3959421, 27914454, 4383652),
- ),
- array(
- array(5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766),
- array(-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701),
- array(28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300),
- ),
- array(
- array(14499471, -2729599, -33191113, -4254652, 28494862, 14271267, 30290735, 10876454, -33154098, 2381726),
- array(-7195431, -2655363, -14730155, 462251, -27724326, 3941372, -6236617, 3696005, -32300832, 15351955),
- array(27431194, 8222322, 16448760, -3907995, -18707002, 11938355, -32961401, -2970515, 29551813, 10109425),
- ),
- ),
- array(
- array(
- array(-13657040, -13155431, -31283750, 11777098, 21447386, 6519384, -2378284, -1627556, 10092783, -4764171),
- array(27939166, 14210322, 4677035, 16277044, -22964462, -12398139, -32508754, 12005538, -17810127, 12803510),
- array(17228999, -15661624, -1233527, 300140, -1224870, -11714777, 30364213, -9038194, 18016357, 4397660),
- ),
- array(
- array(-10958843, -7690207, 4776341, -14954238, 27850028, -15602212, -26619106, 14544525, -17477504, 982639),
- array(29253598, 15796703, -2863982, -9908884, 10057023, 3163536, 7332899, -4120128, -21047696, 9934963),
- array(5793303, 16271923, -24131614, -10116404, 29188560, 1206517, -14747930, 4559895, -30123922, -10897950),
- ),
- array(
- array(-27643952, -11493006, 16282657, -11036493, 28414021, -15012264, 24191034, 4541697, -13338309, 5500568),
- array(12650548, -1497113, 9052871, 11355358, -17680037, -8400164, -17430592, 12264343, 10874051, 13524335),
- array(25556948, -3045990, 714651, 2510400, 23394682, -10415330, 33119038, 5080568, -22528059, 5376628),
- ),
- array(
- array(-26088264, -4011052, -17013699, -3537628, -6726793, 1920897, -22321305, -9447443, 4535768, 1569007),
- array(-2255422, 14606630, -21692440, -8039818, 28430649, 8775819, -30494562, 3044290, 31848280, 12543772),
- array(-22028579, 2943893, -31857513, 6777306, 13784462, -4292203, -27377195, -2062731, 7718482, 14474653),
- ),
- array(
- array(2385315, 2454213, -22631320, 46603, -4437935, -15680415, 656965, -7236665, 24316168, -5253567),
- array(13741529, 10911568, -33233417, -8603737, -20177830, -1033297, 33040651, -13424532, -20729456, 8321686),
- array(21060490, -2212744, 15712757, -4336099, 1639040, 10656336, 23845965, -11874838, -9984458, 608372),
- ),
- array(
- array(-13672732, -15087586, -10889693, -7557059, -6036909, 11305547, 1123968, -6780577, 27229399, 23887),
- array(-23244140, -294205, -11744728, 14712571, -29465699, -2029617, 12797024, -6440308, -1633405, 16678954),
- array(-29500620, 4770662, -16054387, 14001338, 7830047, 9564805, -1508144, -4795045, -17169265, 4904953),
- ),
- array(
- array(24059557, 14617003, 19037157, -15039908, 19766093, -14906429, 5169211, 16191880, 2128236, -4326833),
- array(-16981152, 4124966, -8540610, -10653797, 30336522, -14105247, -29806336, 916033, -6882542, -2986532),
- array(-22630907, 12419372, -7134229, -7473371, -16478904, 16739175, 285431, 2763829, 15736322, 4143876),
- ),
- array(
- array(2379352, 11839345, -4110402, -5988665, 11274298, 794957, 212801, -14594663, 23527084, -16458268),
- array(33431127, -11130478, -17838966, -15626900, 8909499, 8376530, -32625340, 4087881, -15188911, -14416214),
- array(1767683, 7197987, -13205226, -2022635, -13091350, 448826, 5799055, 4357868, -4774191, -16323038),
- ),
- ),
- array(
- array(
- array(6721966, 13833823, -23523388, -1551314, 26354293, -11863321, 23365147, -3949732, 7390890, 2759800),
- array(4409041, 2052381, 23373853, 10530217, 7676779, -12885954, 21302353, -4264057, 1244380, -12919645),
- array(-4421239, 7169619, 4982368, -2957590, 30256825, -2777540, 14086413, 9208236, 15886429, 16489664),
- ),
- array(
- array(1996075, 10375649, 14346367, 13311202, -6874135, -16438411, -13693198, 398369, -30606455, -712933),
- array(-25307465, 9795880, -2777414, 14878809, -33531835, 14780363, 13348553, 12076947, -30836462, 5113182),
- array(-17770784, 11797796, 31950843, 13929123, -25888302, 12288344, -30341101, -7336386, 13847711, 5387222),
- ),
- array(
- array(-18582163, -3416217, 17824843, -2340966, 22744343, -10442611, 8763061, 3617786, -19600662, 10370991),
- array(20246567, -14369378, 22358229, -543712, 18507283, -10413996, 14554437, -8746092, 32232924, 16763880),
- array(9648505, 10094563, 26416693, 14745928, -30374318, -6472621, 11094161, 15689506, 3140038, -16510092),
- ),
- array(
- array(-16160072, 5472695, 31895588, 4744994, 8823515, 10365685, -27224800, 9448613, -28774454, 366295),
- array(19153450, 11523972, -11096490, -6503142, -24647631, 5420647, 28344573, 8041113, 719605, 11671788),
- array(8678025, 2694440, -6808014, 2517372, 4964326, 11152271, -15432916, -15266516, 27000813, -10195553),
- ),
- array(
- array(-15157904, 7134312, 8639287, -2814877, -7235688, 10421742, 564065, 5336097, 6750977, -14521026),
- array(11836410, -3979488, 26297894, 16080799, 23455045, 15735944, 1695823, -8819122, 8169720, 16220347),
- array(-18115838, 8653647, 17578566, -6092619, -8025777, -16012763, -11144307, -2627664, -5990708, -14166033),
- ),
- array(
- array(-23308498, -10968312, 15213228, -10081214, -30853605, -11050004, 27884329, 2847284, 2655861, 1738395),
- array(-27537433, -14253021, -25336301, -8002780, -9370762, 8129821, 21651608, -3239336, -19087449, -11005278),
- array(1533110, 3437855, 23735889, 459276, 29970501, 11335377, 26030092, 5821408, 10478196, 8544890),
- ),
- array(
- array(32173121, -16129311, 24896207, 3921497, 22579056, -3410854, 19270449, 12217473, 17789017, -3395995),
- array(-30552961, -2228401, -15578829, -10147201, 13243889, 517024, 15479401, -3853233, 30460520, 1052596),
- array(-11614875, 13323618, 32618793, 8175907, -15230173, 12596687, 27491595, -4612359, 3179268, -9478891),
- ),
- array(
- array(31947069, -14366651, -4640583, -15339921, -15125977, -6039709, -14756777, -16411740, 19072640, -9511060),
- array(11685058, 11822410, 3158003, -13952594, 33402194, -4165066, 5977896, -5215017, 473099, 5040608),
- array(-20290863, 8198642, -27410132, 11602123, 1290375, -2799760, 28326862, 1721092, -19558642, -3131606),
- ),
- ),
- array(
- array(
- array(7881532, 10687937, 7578723, 7738378, -18951012, -2553952, 21820786, 8076149, -27868496, 11538389),
- array(-19935666, 3899861, 18283497, -6801568, -15728660, -11249211, 8754525, 7446702, -5676054, 5797016),
- array(-11295600, -3793569, -15782110, -7964573, 12708869, -8456199, 2014099, -9050574, -2369172, -5877341),
- ),
- array(
- array(-22472376, -11568741, -27682020, 1146375, 18956691, 16640559, 1192730, -3714199, 15123619, 10811505),
- array(14352098, -3419715, -18942044, 10822655, 32750596, 4699007, -70363, 15776356, -28886779, -11974553),
- array(-28241164, -8072475, -4978962, -5315317, 29416931, 1847569, -20654173, -16484855, 4714547, -9600655),
- ),
- array(
- array(15200332, 8368572, 19679101, 15970074, -31872674, 1959451, 24611599, -4543832, -11745876, 12340220),
- array(12876937, -10480056, 33134381, 6590940, -6307776, 14872440, 9613953, 8241152, 15370987, 9608631),
- array(-4143277, -12014408, 8446281, -391603, 4407738, 13629032, -7724868, 15866074, -28210621, -8814099),
- ),
- array(
- array(26660628, -15677655, 8393734, 358047, -7401291, 992988, -23904233, 858697, 20571223, 8420556),
- array(14620715, 13067227, -15447274, 8264467, 14106269, 15080814, 33531827, 12516406, -21574435, -12476749),
- array(236881, 10476226, 57258, -14677024, 6472998, 2466984, 17258519, 7256740, 8791136, 15069930),
- ),
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- array(
- array(20678546, -8375738, -32671898, 8849123, -5009758, 14574752, 31186971, -3973730, 9014762, -8579056),
- array(-13644050, -10350239, -15962508, 5075808, -1514661, -11534600, -33102500, 9160280, 8473550, -3256838),
- array(24900749, 14435722, 17209120, -15292541, -22592275, 9878983, -7689309, -16335821, -24568481, 11788948),
- ),
- array(
- array(-3118155, -11395194, -13802089, 14797441, 9652448, -6845904, -20037437, 10410733, -24568470, -1458691),
- array(-15659161, 16736706, -22467150, 10215878, -9097177, 7563911, 11871841, -12505194, -18513325, 8464118),
- array(-23400612, 8348507, -14585951, -861714, -3950205, -6373419, 14325289, 8628612, 33313881, -8370517),
- ),
- array(
- array(-20186973, -4967935, 22367356, 5271547, -1097117, -4788838, -24805667, -10236854, -8940735, -5818269),
- array(-6948785, -1795212, -32625683, -16021179, 32635414, -7374245, 15989197, -12838188, 28358192, -4253904),
- array(-23561781, -2799059, -32351682, -1661963, -9147719, 10429267, -16637684, 4072016, -5351664, 5596589),
- ),
- array(
- array(-28236598, -3390048, 12312896, 6213178, 3117142, 16078565, 29266239, 2557221, 1768301, 15373193),
- array(-7243358, -3246960, -4593467, -7553353, -127927, -912245, -1090902, -4504991, -24660491, 3442910),
- array(-30210571, 5124043, 14181784, 8197961, 18964734, -11939093, 22597931, 7176455, -18585478, 13365930),
- ),
- array(
- array(-7877390, -1499958, 8324673, 4690079, 6261860, 890446, 24538107, -8570186, -9689599, -3031667),
- array(25008904, -10771599, -4305031, -9638010, 16265036, 15721635, 683793, -11823784, 15723479, -15163481),
- array(-9660625, 12374379, -27006999, -7026148, -7724114, -12314514, 11879682, 5400171, 519526, -1235876),
- ),
- array(
- array(22258397, -16332233, -7869817, 14613016, -22520255, -2950923, -20353881, 7315967, 16648397, 7605640),
- array(-8081308, -8464597, -8223311, 9719710, 19259459, -15348212, 23994942, -5281555, -9468848, 4763278),
- array(-21699244, 9220969, -15730624, 1084137, -25476107, -2852390, 31088447, -7764523, -11356529, 728112),
- ),
- array(
- array(26047220, -11751471, -6900323, -16521798, 24092068, 9158119, -4273545, -12555558, -29365436, -5498272),
- array(17510331, -322857, 5854289, 8403524, 17133918, -3112612, -28111007, 12327945, 10750447, 10014012),
- array(-10312768, 3936952, 9156313, -8897683, 16498692, -994647, -27481051, -666732, 3424691, 7540221),
- ),
- array(
- array(30322361, -6964110, 11361005, -4143317, 7433304, 4989748, -7071422, -16317219, -9244265, 15258046),
- array(13054562, -2779497, 19155474, 469045, -12482797, 4566042, 5631406, 2711395, 1062915, -5136345),
- array(-19240248, -11254599, -29509029, -7499965, -5835763, 13005411, -6066489, 12194497, 32960380, 1459310),
- ),
- ),
- array(
- array(
- array(19852034, 7027924, 23669353, 10020366, 8586503, -6657907, 394197, -6101885, 18638003, -11174937),
- array(31395534, 15098109, 26581030, 8030562, -16527914, -5007134, 9012486, -7584354, -6643087, -5442636),
- array(-9192165, -2347377, -1997099, 4529534, 25766844, 607986, -13222, 9677543, -32294889, -6456008),
- ),
- array(
- array(-2444496, -149937, 29348902, 8186665, 1873760, 12489863, -30934579, -7839692, -7852844, -8138429),
- array(-15236356, -15433509, 7766470, 746860, 26346930, -10221762, -27333451, 10754588, -9431476, 5203576),
- array(31834314, 14135496, -770007, 5159118, 20917671, -16768096, -7467973, -7337524, 31809243, 7347066),
- ),
- array(
- array(-9606723, -11874240, 20414459, 13033986, 13716524, -11691881, 19797970, -12211255, 15192876, -2087490),
- array(-12663563, -2181719, 1168162, -3804809, 26747877, -14138091, 10609330, 12694420, 33473243, -13382104),
- array(33184999, 11180355, 15832085, -11385430, -1633671, 225884, 15089336, -11023903, -6135662, 14480053),
- ),
- array(
- array(31308717, -5619998, 31030840, -1897099, 15674547, -6582883, 5496208, 13685227, 27595050, 8737275),
- array(-20318852, -15150239, 10933843, -16178022, 8335352, -7546022, -31008351, -12610604, 26498114, 66511),
- array(22644454, -8761729, -16671776, 4884562, -3105614, -13559366, 30540766, -4286747, -13327787, -7515095),
- ),
- array(
- array(-28017847, 9834845, 18617207, -2681312, -3401956, -13307506, 8205540, 13585437, -17127465, 15115439),
- array(23711543, -672915, 31206561, -8362711, 6164647, -9709987, -33535882, -1426096, 8236921, 16492939),
- array(-23910559, -13515526, -26299483, -4503841, 25005590, -7687270, 19574902, 10071562, 6708380, -6222424),
- ),
- array(
- array(2101391, -4930054, 19702731, 2367575, -15427167, 1047675, 5301017, 9328700, 29955601, -11678310),
- array(3096359, 9271816, -21620864, -15521844, -14847996, -7592937, -25892142, -12635595, -9917575, 6216608),
- array(-32615849, 338663, -25195611, 2510422, -29213566, -13820213, 24822830, -6146567, -26767480, 7525079),
- ),
- array(
- array(-23066649, -13985623, 16133487, -7896178, -3389565, 778788, -910336, -2782495, -19386633, 11994101),
- array(21691500, -13624626, -641331, -14367021, 3285881, -3483596, -25064666, 9718258, -7477437, 13381418),
- array(18445390, -4202236, 14979846, 11622458, -1727110, -3582980, 23111648, -6375247, 28535282, 15779576),
- ),
- array(
- array(30098053, 3089662, -9234387, 16662135, -21306940, 11308411, -14068454, 12021730, 9955285, -16303356),
- array(9734894, -14576830, -7473633, -9138735, 2060392, 11313496, -18426029, 9924399, 20194861, 13380996),
- array(-26378102, -7965207, -22167821, 15789297, -18055342, -6168792, -1984914, 15707771, 26342023, 10146099),
- ),
- ),
- array(
- array(
- array(-26016874, -219943, 21339191, -41388, 19745256, -2878700, -29637280, 2227040, 21612326, -545728),
- array(-13077387, 1184228, 23562814, -5970442, -20351244, -6348714, 25764461, 12243797, -20856566, 11649658),
- array(-10031494, 11262626, 27384172, 2271902, 26947504, -15997771, 39944, 6114064, 33514190, 2333242),
- ),
- array(
- array(-21433588, -12421821, 8119782, 7219913, -21830522, -9016134, -6679750, -12670638, 24350578, -13450001),
- array(-4116307, -11271533, -23886186, 4843615, -30088339, 690623, -31536088, -10406836, 8317860, 12352766),
- array(18200138, -14475911, -33087759, -2696619, -23702521, -9102511, -23552096, -2287550, 20712163, 6719373),
- ),
- array(
- array(26656208, 6075253, -7858556, 1886072, -28344043, 4262326, 11117530, -3763210, 26224235, -3297458),
- array(-17168938, -14854097, -3395676, -16369877, -19954045, 14050420, 21728352, 9493610, 18620611, -16428628),
- array(-13323321, 13325349, 11432106, 5964811, 18609221, 6062965, -5269471, -9725556, -30701573, -16479657),
- ),
- array(
- array(-23860538, -11233159, 26961357, 1640861, -32413112, -16737940, 12248509, -5240639, 13735342, 1934062),
- array(25089769, 6742589, 17081145, -13406266, 21909293, -16067981, -15136294, -3765346, -21277997, 5473616),
- array(31883677, -7961101, 1083432, -11572403, 22828471, 13290673, -7125085, 12469656, 29111212, -5451014),
- ),
- array(
- array(24244947, -15050407, -26262976, 2791540, -14997599, 16666678, 24367466, 6388839, -10295587, 452383),
- array(-25640782, -3417841, 5217916, 16224624, 19987036, -4082269, -24236251, -5915248, 15766062, 8407814),
- array(-20406999, 13990231, 15495425, 16395525, 5377168, 15166495, -8917023, -4388953, -8067909, 2276718),
- ),
- array(
- array(30157918, 12924066, -17712050, 9245753, 19895028, 3368142, -23827587, 5096219, 22740376, -7303417),
- array(2041139, -14256350, 7783687, 13876377, -25946985, -13352459, 24051124, 13742383, -15637599, 13295222),
- array(33338237, -8505733, 12532113, 7977527, 9106186, -1715251, -17720195, -4612972, -4451357, -14669444),
- ),
- array(
- array(-20045281, 5454097, -14346548, 6447146, 28862071, 1883651, -2469266, -4141880, 7770569, 9620597),
- array(23208068, 7979712, 33071466, 8149229, 1758231, -10834995, 30945528, -1694323, -33502340, -14767970),
- array(1439958, -16270480, -1079989, -793782, 4625402, 10647766, -5043801, 1220118, 30494170, -11440799),
- ),
- array(
- array(-5037580, -13028295, -2970559, -3061767, 15640974, -6701666, -26739026, 926050, -1684339, -13333647),
- array(13908495, -3549272, 30919928, -6273825, -21521863, 7989039, 9021034, 9078865, 3353509, 4033511),
- array(-29663431, -15113610, 32259991, -344482, 24295849, -12912123, 23161163, 8839127, 27485041, 7356032),
- ),
- ),
- array(
- array(
- array(9661027, 705443, 11980065, -5370154, -1628543, 14661173, -6346142, 2625015, 28431036, -16771834),
- array(-23839233, -8311415, -25945511, 7480958, -17681669, -8354183, -22545972, 14150565, 15970762, 4099461),
- array(29262576, 16756590, 26350592, -8793563, 8529671, -11208050, 13617293, -9937143, 11465739, 8317062),
- ),
- array(
- array(-25493081, -6962928, 32500200, -9419051, -23038724, -2302222, 14898637, 3848455, 20969334, -5157516),
- array(-20384450, -14347713, -18336405, 13884722, -33039454, 2842114, -21610826, -3649888, 11177095, 14989547),
- array(-24496721, -11716016, 16959896, 2278463, 12066309, 10137771, 13515641, 2581286, -28487508, 9930240),
- ),
- array(
- array(-17751622, -2097826, 16544300, -13009300, -15914807, -14949081, 18345767, -13403753, 16291481, -5314038),
- array(-33229194, 2553288, 32678213, 9875984, 8534129, 6889387, -9676774, 6957617, 4368891, 9788741),
- array(16660756, 7281060, -10830758, 12911820, 20108584, -8101676, -21722536, -8613148, 16250552, -11111103),
- ),
- array(
- array(-19765507, 2390526, -16551031, 14161980, 1905286, 6414907, 4689584, 10604807, -30190403, 4782747),
- array(-1354539, 14736941, -7367442, -13292886, 7710542, -14155590, -9981571, 4383045, 22546403, 437323),
- array(31665577, -12180464, -16186830, 1491339, -18368625, 3294682, 27343084, 2786261, -30633590, -14097016),
- ),
- array(
- array(-14467279, -683715, -33374107, 7448552, 19294360, 14334329, -19690631, 2355319, -19284671, -6114373),
- array(15121312, -15796162, 6377020, -6031361, -10798111, -12957845, 18952177, 15496498, -29380133, 11754228),
- array(-2637277, -13483075, 8488727, -14303896, 12728761, -1622493, 7141596, 11724556, 22761615, -10134141),
- ),
- array(
- array(16918416, 11729663, -18083579, 3022987, -31015732, -13339659, -28741185, -12227393, 32851222, 11717399),
- array(11166634, 7338049, -6722523, 4531520, -29468672, -7302055, 31474879, 3483633, -1193175, -4030831),
- array(-185635, 9921305, 31456609, -13536438, -12013818, 13348923, 33142652, 6546660, -19985279, -3948376),
- ),
- array(
- array(-32460596, 11266712, -11197107, -7899103, 31703694, 3855903, -8537131, -12833048, -30772034, -15486313),
- array(-18006477, 12709068, 3991746, -6479188, -21491523, -10550425, -31135347, -16049879, 10928917, 3011958),
- array(-6957757, -15594337, 31696059, 334240, 29576716, 14796075, -30831056, -12805180, 18008031, 10258577),
- ),
- array(
- array(-22448644, 15655569, 7018479, -4410003, -30314266, -1201591, -1853465, 1367120, 25127874, 6671743),
- array(29701166, -14373934, -10878120, 9279288, -17568, 13127210, 21382910, 11042292, 25838796, 4642684),
- array(-20430234, 14955537, -24126347, 8124619, -5369288, -5990470, 30468147, -13900640, 18423289, 4177476),
- ),
- )
- );
-
- /**
- * See: libsodium's crypto_core/curve25519/ref10/base2.h
- *
- * @var array basically int[8][3]
- */
- protected static $base2 = array(
- array(
- array(25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605),
- array(-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378),
- array(-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546),
- ),
- array(
- array(15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024),
- array(16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574),
- array(30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357),
- ),
- array(
- array(10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380),
- array(4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306),
- array(19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942),
- ),
- array(
- array(5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766),
- array(-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701),
- array(28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300),
- ),
- array(
- array(-22518993, -6692182, 14201702, -8745502, -23510406, 8844726, 18474211, -1361450, -13062696, 13821877),
- array(-6455177, -7839871, 3374702, -4740862, -27098617, -10571707, 31655028, -7212327, 18853322, -14220951),
- array(4566830, -12963868, -28974889, -12240689, -7602672, -2830569, -8514358, -10431137, 2207753, -3209784),
- ),
- array(
- array(-25154831, -4185821, 29681144, 7868801, -6854661, -9423865, -12437364, -663000, -31111463, -16132436),
- array(25576264, -2703214, 7349804, -11814844, 16472782, 9300885, 3844789, 15725684, 171356, 6466918),
- array(23103977, 13316479, 9739013, -16149481, 817875, -15038942, 8965339, -14088058, -30714912, 16193877),
- ),
- array(
- array(-33521811, 3180713, -2394130, 14003687, -16903474, -16270840, 17238398, 4729455, -18074513, 9256800),
- array(-25182317, -4174131, 32336398, 5036987, -21236817, 11360617, 22616405, 9761698, -19827198, 630305),
- array(-13720693, 2639453, -24237460, -7406481, 9494427, -5774029, -6554551, -15960994, -2449256, -14291300),
- ),
- array(
- array(-3151181, -5046075, 9282714, 6866145, -31907062, -863023, -18940575, 15033784, 25105118, -7894876),
- array(-24326370, 15950226, -31801215, -14592823, -11662737, -5090925, 1573892, -2625887, 2198790, -15804619),
- array(-3099351, 10324967, -2241613, 7453183, -5446979, -2735503, -13812022, -16236442, -32461234, -12290683),
- )
- );
-
- /**
- * 37095705934669439343138083508754565189542113879843219016388785533085940283555
- *
- * @var array<int, int>
- */
- protected static $d = array(
- -10913610,
- 13857413,
- -15372611,
- 6949391,
- 114729,
- -8787816,
- -6275908,
- -3247719,
- -18696448,
- -12055116
- );
-
- /**
- * 2 * d = 16295367250680780974490674513165176452449235426866156013048779062215315747161
- *
- * @var array<int, int>
- */
- protected static $d2 = array(
- -21827239,
- -5839606,
- -30745221,
- 13898782,
- 229458,
- 15978800,
- -12551817,
- -6495438,
- 29715968,
- 9444199
- );
-
- /**
- * sqrt(-1)
- *
- * @var array<int, int>
- */
- protected static $sqrtm1 = array(
- -32595792,
- -7943725,
- 9377950,
- 3500415,
- 12389472,
- -272473,
- -25146209,
- -2005654,
- 326686,
- 11406482
- );
-
- /**
- * 1 / sqrt(a - d)
- *
- * @var array<int, int>
- */
- protected static $invsqrtamd = array(
- 6111485,
- 4156064,
- -27798727,
- 12243468,
- -25904040,
- 120897,
- 20826367,
- -7060776,
- 6093568,
- -1986012
- );
-
- /**
- * sqrt(ad - 1) with a = -1 (mod p)
- *
- * @var array<int, int>
- */
- protected static $sqrtadm1 = array(
- 24849947,
- -153582,
- -23613485,
- 6347715,
- -21072328,
- -667138,
- -25271143,
- -15367704,
- -870347,
- 14525639
- );
-
- /**
- * 1 - d ^ 2
- *
- * @var array<int, int>
- */
- protected static $onemsqd = array(
- 6275446,
- -16617371,
- -22938544,
- -3773710,
- 11667077,
- 7397348,
- -27922721,
- 1766195,
- -24433858,
- 672203
- );
-
- /**
- * (d - 1) ^ 2
- * @var array<int, int>
- */
- protected static $sqdmone = array(
- 15551795,
- -11097455,
- -13425098,
- -10125071,
- -11896535,
- 10178284,
- -26634327,
- 4729244,
- -5282110,
- -10116402
- );
-
-
- /*
- * 2^252+27742317777372353535851937790883648493
- static const unsigned char L[] = {
- 0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, 0xd6, 0x9c, 0xf7,
- 0xa2, 0xde, 0xf9, 0xde, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10
- };
- */
- const L = "\xed\xd3\xf5\x5c\x1a\x63\x12\x58\xd6\x9c\xf7\xa2\xde\xf9\xde\x14\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x10";
-}
+<?php + +if (class_exists('ParagonIE_Sodium_Core_Curve25519_H', false)) { + return; +} + +/** + * Class ParagonIE_Sodium_Core_Curve25519_H + * + * This just contains the constants in the ref10/base.h file + */ +class ParagonIE_Sodium_Core_Curve25519_H extends ParagonIE_Sodium_Core_Util +{ + /** + * See: libsodium's crypto_core/curve25519/ref10/base.h + * + * @var array<int, array<int, array<int, array<int, int>>>> Basically, int[32][8][3][10] + */ + protected static $base = array( + array( + array( + array(25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605), + array(-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378), + array(-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546), + ), + array( + array(-12815894, -12976347, -21581243, 11784320, -25355658, -2750717, -11717903, -3814571, -358445, -10211303), + array(-21703237, 6903825, 27185491, 6451973, -29577724, -9554005, -15616551, 11189268, -26829678, -5319081), + array(26966642, 11152617, 32442495, 15396054, 14353839, -12752335, -3128826, -9541118, -15472047, -4166697), + ), + array( + array(15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024), + array(16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574), + array(30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357), + ), + array( + array(-17036878, 13921892, 10945806, -6033431, 27105052, -16084379, -28926210, 15006023, 3284568, -6276540), + array(23599295, -8306047, -11193664, -7687416, 13236774, 10506355, 7464579, 9656445, 13059162, 10374397), + array(7798556, 16710257, 3033922, 2874086, 28997861, 2835604, 32406664, -3839045, -641708, -101325), + ), + array( + array(10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380), + array(4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306), + array(19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942), + ), + array( + array(-15371964, -12862754, 32573250, 4720197, -26436522, 5875511, -19188627, -15224819, -9818940, -12085777), + array(-8549212, 109983, 15149363, 2178705, 22900618, 4543417, 3044240, -15689887, 1762328, 14866737), + array(-18199695, -15951423, -10473290, 1707278, -17185920, 3916101, -28236412, 3959421, 27914454, 4383652), + ), + array( + array(5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766), + array(-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701), + array(28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300), + ), + array( + array(14499471, -2729599, -33191113, -4254652, 28494862, 14271267, 30290735, 10876454, -33154098, 2381726), + array(-7195431, -2655363, -14730155, 462251, -27724326, 3941372, -6236617, 3696005, -32300832, 15351955), + array(27431194, 8222322, 16448760, -3907995, -18707002, 11938355, -32961401, -2970515, 29551813, 10109425), + ), + ), + array( + array( + array(-13657040, -13155431, -31283750, 11777098, 21447386, 6519384, -2378284, -1627556, 10092783, -4764171), + array(27939166, 14210322, 4677035, 16277044, -22964462, -12398139, -32508754, 12005538, -17810127, 12803510), + array(17228999, -15661624, -1233527, 300140, -1224870, -11714777, 30364213, -9038194, 18016357, 4397660), + ), + array( + array(-10958843, -7690207, 4776341, -14954238, 27850028, -15602212, -26619106, 14544525, -17477504, 982639), + array(29253598, 15796703, -2863982, -9908884, 10057023, 3163536, 7332899, -4120128, -21047696, 9934963), + array(5793303, 16271923, -24131614, -10116404, 29188560, 1206517, -14747930, 4559895, -30123922, -10897950), + ), + array( + array(-27643952, -11493006, 16282657, -11036493, 28414021, -15012264, 24191034, 4541697, -13338309, 5500568), + array(12650548, -1497113, 9052871, 11355358, -17680037, -8400164, -17430592, 12264343, 10874051, 13524335), + array(25556948, -3045990, 714651, 2510400, 23394682, -10415330, 33119038, 5080568, -22528059, 5376628), + ), + array( + array(-26088264, -4011052, -17013699, -3537628, -6726793, 1920897, -22321305, -9447443, 4535768, 1569007), + array(-2255422, 14606630, -21692440, -8039818, 28430649, 8775819, -30494562, 3044290, 31848280, 12543772), + array(-22028579, 2943893, -31857513, 6777306, 13784462, -4292203, -27377195, -2062731, 7718482, 14474653), + ), + array( + array(2385315, 2454213, -22631320, 46603, -4437935, -15680415, 656965, -7236665, 24316168, -5253567), + array(13741529, 10911568, -33233417, -8603737, -20177830, -1033297, 33040651, -13424532, -20729456, 8321686), + array(21060490, -2212744, 15712757, -4336099, 1639040, 10656336, 23845965, -11874838, -9984458, 608372), + ), + array( + array(-13672732, -15087586, -10889693, -7557059, -6036909, 11305547, 1123968, -6780577, 27229399, 23887), + array(-23244140, -294205, -11744728, 14712571, -29465699, -2029617, 12797024, -6440308, -1633405, 16678954), + array(-29500620, 4770662, -16054387, 14001338, 7830047, 9564805, -1508144, -4795045, -17169265, 4904953), + ), + array( + array(24059557, 14617003, 19037157, -15039908, 19766093, -14906429, 5169211, 16191880, 2128236, -4326833), + array(-16981152, 4124966, -8540610, -10653797, 30336522, -14105247, -29806336, 916033, -6882542, -2986532), + array(-22630907, 12419372, -7134229, -7473371, -16478904, 16739175, 285431, 2763829, 15736322, 4143876), + ), + array( + array(2379352, 11839345, -4110402, -5988665, 11274298, 794957, 212801, -14594663, 23527084, -16458268), + array(33431127, -11130478, -17838966, -15626900, 8909499, 8376530, -32625340, 4087881, -15188911, -14416214), + array(1767683, 7197987, -13205226, -2022635, -13091350, 448826, 5799055, 4357868, -4774191, -16323038), + ), + ), + array( + array( + array(6721966, 13833823, -23523388, -1551314, 26354293, -11863321, 23365147, -3949732, 7390890, 2759800), + array(4409041, 2052381, 23373853, 10530217, 7676779, -12885954, 21302353, -4264057, 1244380, -12919645), + array(-4421239, 7169619, 4982368, -2957590, 30256825, -2777540, 14086413, 9208236, 15886429, 16489664), + ), + array( + array(1996075, 10375649, 14346367, 13311202, -6874135, -16438411, -13693198, 398369, -30606455, -712933), + array(-25307465, 9795880, -2777414, 14878809, -33531835, 14780363, 13348553, 12076947, -30836462, 5113182), + array(-17770784, 11797796, 31950843, 13929123, -25888302, 12288344, -30341101, -7336386, 13847711, 5387222), + ), + array( + array(-18582163, -3416217, 17824843, -2340966, 22744343, -10442611, 8763061, 3617786, -19600662, 10370991), + array(20246567, -14369378, 22358229, -543712, 18507283, -10413996, 14554437, -8746092, 32232924, 16763880), + array(9648505, 10094563, 26416693, 14745928, -30374318, -6472621, 11094161, 15689506, 3140038, -16510092), + ), + array( + array(-16160072, 5472695, 31895588, 4744994, 8823515, 10365685, -27224800, 9448613, -28774454, 366295), + array(19153450, 11523972, -11096490, -6503142, -24647631, 5420647, 28344573, 8041113, 719605, 11671788), + array(8678025, 2694440, -6808014, 2517372, 4964326, 11152271, -15432916, -15266516, 27000813, -10195553), + ), + array( + array(-15157904, 7134312, 8639287, -2814877, -7235688, 10421742, 564065, 5336097, 6750977, -14521026), + array(11836410, -3979488, 26297894, 16080799, 23455045, 15735944, 1695823, -8819122, 8169720, 16220347), + array(-18115838, 8653647, 17578566, -6092619, -8025777, -16012763, -11144307, -2627664, -5990708, -14166033), + ), + array( + array(-23308498, -10968312, 15213228, -10081214, -30853605, -11050004, 27884329, 2847284, 2655861, 1738395), + array(-27537433, -14253021, -25336301, -8002780, -9370762, 8129821, 21651608, -3239336, -19087449, -11005278), + array(1533110, 3437855, 23735889, 459276, 29970501, 11335377, 26030092, 5821408, 10478196, 8544890), + ), + array( + array(32173121, -16129311, 24896207, 3921497, 22579056, -3410854, 19270449, 12217473, 17789017, -3395995), + array(-30552961, -2228401, -15578829, -10147201, 13243889, 517024, 15479401, -3853233, 30460520, 1052596), + array(-11614875, 13323618, 32618793, 8175907, -15230173, 12596687, 27491595, -4612359, 3179268, -9478891), + ), + array( + array(31947069, -14366651, -4640583, -15339921, -15125977, -6039709, -14756777, -16411740, 19072640, -9511060), + array(11685058, 11822410, 3158003, -13952594, 33402194, -4165066, 5977896, -5215017, 473099, 5040608), + array(-20290863, 8198642, -27410132, 11602123, 1290375, -2799760, 28326862, 1721092, -19558642, -3131606), + ), + ), + array( + array( + array(7881532, 10687937, 7578723, 7738378, -18951012, -2553952, 21820786, 8076149, -27868496, 11538389), + array(-19935666, 3899861, 18283497, -6801568, -15728660, -11249211, 8754525, 7446702, -5676054, 5797016), + array(-11295600, -3793569, -15782110, -7964573, 12708869, -8456199, 2014099, -9050574, -2369172, -5877341), + ), + array( + array(-22472376, -11568741, -27682020, 1146375, 18956691, 16640559, 1192730, -3714199, 15123619, 10811505), + array(14352098, -3419715, -18942044, 10822655, 32750596, 4699007, -70363, 15776356, -28886779, -11974553), + array(-28241164, -8072475, -4978962, -5315317, 29416931, 1847569, -20654173, -16484855, 4714547, -9600655), + ), + array( + array(15200332, 8368572, 19679101, 15970074, -31872674, 1959451, 24611599, -4543832, -11745876, 12340220), + array(12876937, -10480056, 33134381, 6590940, -6307776, 14872440, 9613953, 8241152, 15370987, 9608631), + array(-4143277, -12014408, 8446281, -391603, 4407738, 13629032, -7724868, 15866074, -28210621, -8814099), + ), + array( + array(26660628, -15677655, 8393734, 358047, -7401291, 992988, -23904233, 858697, 20571223, 8420556), + array(14620715, 13067227, -15447274, 8264467, 14106269, 15080814, 33531827, 12516406, -21574435, -12476749), + array(236881, 10476226, 57258, -14677024, 6472998, 2466984, 17258519, 7256740, 8791136, 15069930), + ), + array( + array(1276410, -9371918, 22949635, -16322807, -23493039, -5702186, 14711875, 4874229, -30663140, -2331391), + array(5855666, 4990204, -13711848, 7294284, -7804282, 1924647, -1423175, -7912378, -33069337, 9234253), + array(20590503, -9018988, 31529744, -7352666, -2706834, 10650548, 31559055, -11609587, 18979186, 13396066), + ), + array( + array(24474287, 4968103, 22267082, 4407354, 24063882, -8325180, -18816887, 13594782, 33514650, 7021958), + array(-11566906, -6565505, -21365085, 15928892, -26158305, 4315421, -25948728, -3916677, -21480480, 12868082), + array(-28635013, 13504661, 19988037, -2132761, 21078225, 6443208, -21446107, 2244500, -12455797, -8089383), + ), + array( + array(-30595528, 13793479, -5852820, 319136, -25723172, -6263899, 33086546, 8957937, -15233648, 5540521), + array(-11630176, -11503902, -8119500, -7643073, 2620056, 1022908, -23710744, -1568984, -16128528, -14962807), + array(23152971, 775386, 27395463, 14006635, -9701118, 4649512, 1689819, 892185, -11513277, -15205948), + ), + array( + array(9770129, 9586738, 26496094, 4324120, 1556511, -3550024, 27453819, 4763127, -19179614, 5867134), + array(-32765025, 1927590, 31726409, -4753295, 23962434, -16019500, 27846559, 5931263, -29749703, -16108455), + array(27461885, -2977536, 22380810, 1815854, -23033753, -3031938, 7283490, -15148073, -19526700, 7734629), + ), + ), + array( + array( + array(-8010264, -9590817, -11120403, 6196038, 29344158, -13430885, 7585295, -3176626, 18549497, 15302069), + array(-32658337, -6171222, -7672793, -11051681, 6258878, 13504381, 10458790, -6418461, -8872242, 8424746), + array(24687205, 8613276, -30667046, -3233545, 1863892, -1830544, 19206234, 7134917, -11284482, -828919), + ), + array( + array(11334899, -9218022, 8025293, 12707519, 17523892, -10476071, 10243738, -14685461, -5066034, 16498837), + array(8911542, 6887158, -9584260, -6958590, 11145641, -9543680, 17303925, -14124238, 6536641, 10543906), + array(-28946384, 15479763, -17466835, 568876, -1497683, 11223454, -2669190, -16625574, -27235709, 8876771), + ), + array( + array(-25742899, -12566864, -15649966, -846607, -33026686, -796288, -33481822, 15824474, -604426, -9039817), + array(10330056, 70051, 7957388, -9002667, 9764902, 15609756, 27698697, -4890037, 1657394, 3084098), + array(10477963, -7470260, 12119566, -13250805, 29016247, -5365589, 31280319, 14396151, -30233575, 15272409), + ), + array( + array(-12288309, 3169463, 28813183, 16658753, 25116432, -5630466, -25173957, -12636138, -25014757, 1950504), + array(-26180358, 9489187, 11053416, -14746161, -31053720, 5825630, -8384306, -8767532, 15341279, 8373727), + array(28685821, 7759505, -14378516, -12002860, -31971820, 4079242, 298136, -10232602, -2878207, 15190420), + ), + array( + array(-32932876, 13806336, -14337485, -15794431, -24004620, 10940928, 8669718, 2742393, -26033313, -6875003), + array(-1580388, -11729417, -25979658, -11445023, -17411874, -10912854, 9291594, -16247779, -12154742, 6048605), + array(-30305315, 14843444, 1539301, 11864366, 20201677, 1900163, 13934231, 5128323, 11213262, 9168384), + ), + array( + array(-26280513, 11007847, 19408960, -940758, -18592965, -4328580, -5088060, -11105150, 20470157, -16398701), + array(-23136053, 9282192, 14855179, -15390078, -7362815, -14408560, -22783952, 14461608, 14042978, 5230683), + array(29969567, -2741594, -16711867, -8552442, 9175486, -2468974, 21556951, 3506042, -5933891, -12449708), + ), + array( + array(-3144746, 8744661, 19704003, 4581278, -20430686, 6830683, -21284170, 8971513, -28539189, 15326563), + array(-19464629, 10110288, -17262528, -3503892, -23500387, 1355669, -15523050, 15300988, -20514118, 9168260), + array(-5353335, 4488613, -23803248, 16314347, 7780487, -15638939, -28948358, 9601605, 33087103, -9011387), + ), + array( + array(-19443170, -15512900, -20797467, -12445323, -29824447, 10229461, -27444329, -15000531, -5996870, 15664672), + array(23294591, -16632613, -22650781, -8470978, 27844204, 11461195, 13099750, -2460356, 18151676, 13417686), + array(-24722913, -4176517, -31150679, 5988919, -26858785, 6685065, 1661597, -12551441, 15271676, -15452665), + ), + ), + array( + array( + array(11433042, -13228665, 8239631, -5279517, -1985436, -725718, -18698764, 2167544, -6921301, -13440182), + array(-31436171, 15575146, 30436815, 12192228, -22463353, 9395379, -9917708, -8638997, 12215110, 12028277), + array(14098400, 6555944, 23007258, 5757252, -15427832, -12950502, 30123440, 4617780, -16900089, -655628), + ), + array( + array(-4026201, -15240835, 11893168, 13718664, -14809462, 1847385, -15819999, 10154009, 23973261, -12684474), + array(-26531820, -3695990, -1908898, 2534301, -31870557, -16550355, 18341390, -11419951, 32013174, -10103539), + array(-25479301, 10876443, -11771086, -14625140, -12369567, 1838104, 21911214, 6354752, 4425632, -837822), + ), + array( + array(-10433389, -14612966, 22229858, -3091047, -13191166, 776729, -17415375, -12020462, 4725005, 14044970), + array(19268650, -7304421, 1555349, 8692754, -21474059, -9910664, 6347390, -1411784, -19522291, -16109756), + array(-24864089, 12986008, -10898878, -5558584, -11312371, -148526, 19541418, 8180106, 9282262, 10282508), + ), + array( + array(-26205082, 4428547, -8661196, -13194263, 4098402, -14165257, 15522535, 8372215, 5542595, -10702683), + array(-10562541, 14895633, 26814552, -16673850, -17480754, -2489360, -2781891, 6993761, -18093885, 10114655), + array(-20107055, -929418, 31422704, 10427861, -7110749, 6150669, -29091755, -11529146, 25953725, -106158), + ), + array( + array(-4234397, -8039292, -9119125, 3046000, 2101609, -12607294, 19390020, 6094296, -3315279, 12831125), + array(-15998678, 7578152, 5310217, 14408357, -33548620, -224739, 31575954, 6326196, 7381791, -2421839), + array(-20902779, 3296811, 24736065, -16328389, 18374254, 7318640, 6295303, 8082724, -15362489, 12339664), + ), + array( + array(27724736, 2291157, 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+ array(2101391, -4930054, 19702731, 2367575, -15427167, 1047675, 5301017, 9328700, 29955601, -11678310), + array(3096359, 9271816, -21620864, -15521844, -14847996, -7592937, -25892142, -12635595, -9917575, 6216608), + array(-32615849, 338663, -25195611, 2510422, -29213566, -13820213, 24822830, -6146567, -26767480, 7525079), + ), + array( + array(-23066649, -13985623, 16133487, -7896178, -3389565, 778788, -910336, -2782495, -19386633, 11994101), + array(21691500, -13624626, -641331, -14367021, 3285881, -3483596, -25064666, 9718258, -7477437, 13381418), + array(18445390, -4202236, 14979846, 11622458, -1727110, -3582980, 23111648, -6375247, 28535282, 15779576), + ), + array( + array(30098053, 3089662, -9234387, 16662135, -21306940, 11308411, -14068454, 12021730, 9955285, -16303356), + array(9734894, -14576830, -7473633, -9138735, 2060392, 11313496, -18426029, 9924399, 20194861, 13380996), + array(-26378102, -7965207, -22167821, 15789297, -18055342, -6168792, -1984914, 15707771, 26342023, 10146099), + ), + ), + array( + array( + array(-26016874, -219943, 21339191, -41388, 19745256, -2878700, -29637280, 2227040, 21612326, -545728), + array(-13077387, 1184228, 23562814, -5970442, -20351244, -6348714, 25764461, 12243797, -20856566, 11649658), + array(-10031494, 11262626, 27384172, 2271902, 26947504, -15997771, 39944, 6114064, 33514190, 2333242), + ), + array( + array(-21433588, -12421821, 8119782, 7219913, -21830522, -9016134, -6679750, -12670638, 24350578, -13450001), + array(-4116307, -11271533, -23886186, 4843615, -30088339, 690623, -31536088, -10406836, 8317860, 12352766), + array(18200138, -14475911, -33087759, -2696619, -23702521, -9102511, -23552096, -2287550, 20712163, 6719373), + ), + array( + array(26656208, 6075253, -7858556, 1886072, -28344043, 4262326, 11117530, -3763210, 26224235, -3297458), + array(-17168938, -14854097, -3395676, -16369877, -19954045, 14050420, 21728352, 9493610, 18620611, -16428628), + array(-13323321, 13325349, 11432106, 5964811, 18609221, 6062965, -5269471, -9725556, -30701573, -16479657), + ), + array( + array(-23860538, -11233159, 26961357, 1640861, -32413112, -16737940, 12248509, -5240639, 13735342, 1934062), + array(25089769, 6742589, 17081145, -13406266, 21909293, -16067981, -15136294, -3765346, -21277997, 5473616), + array(31883677, -7961101, 1083432, -11572403, 22828471, 13290673, -7125085, 12469656, 29111212, -5451014), + ), + array( + array(24244947, -15050407, -26262976, 2791540, -14997599, 16666678, 24367466, 6388839, -10295587, 452383), + array(-25640782, -3417841, 5217916, 16224624, 19987036, -4082269, -24236251, -5915248, 15766062, 8407814), + array(-20406999, 13990231, 15495425, 16395525, 5377168, 15166495, -8917023, -4388953, -8067909, 2276718), + ), + array( + array(30157918, 12924066, -17712050, 9245753, 19895028, 3368142, -23827587, 5096219, 22740376, -7303417), + array(2041139, -14256350, 7783687, 13876377, -25946985, -13352459, 24051124, 13742383, -15637599, 13295222), + array(33338237, -8505733, 12532113, 7977527, 9106186, -1715251, -17720195, -4612972, -4451357, -14669444), + ), + array( + array(-20045281, 5454097, -14346548, 6447146, 28862071, 1883651, -2469266, -4141880, 7770569, 9620597), + array(23208068, 7979712, 33071466, 8149229, 1758231, -10834995, 30945528, -1694323, -33502340, -14767970), + array(1439958, -16270480, -1079989, -793782, 4625402, 10647766, -5043801, 1220118, 30494170, -11440799), + ), + array( + array(-5037580, -13028295, -2970559, -3061767, 15640974, -6701666, -26739026, 926050, -1684339, -13333647), + array(13908495, -3549272, 30919928, -6273825, -21521863, 7989039, 9021034, 9078865, 3353509, 4033511), + array(-29663431, -15113610, 32259991, -344482, 24295849, -12912123, 23161163, 8839127, 27485041, 7356032), + ), + ), + array( + array( + array(9661027, 705443, 11980065, -5370154, -1628543, 14661173, -6346142, 2625015, 28431036, -16771834), + array(-23839233, -8311415, -25945511, 7480958, -17681669, -8354183, -22545972, 14150565, 15970762, 4099461), + array(29262576, 16756590, 26350592, -8793563, 8529671, -11208050, 13617293, -9937143, 11465739, 8317062), + ), + array( + array(-25493081, -6962928, 32500200, -9419051, -23038724, -2302222, 14898637, 3848455, 20969334, -5157516), + array(-20384450, -14347713, -18336405, 13884722, -33039454, 2842114, -21610826, -3649888, 11177095, 14989547), + array(-24496721, -11716016, 16959896, 2278463, 12066309, 10137771, 13515641, 2581286, -28487508, 9930240), + ), + array( + array(-17751622, -2097826, 16544300, -13009300, -15914807, -14949081, 18345767, -13403753, 16291481, -5314038), + array(-33229194, 2553288, 32678213, 9875984, 8534129, 6889387, -9676774, 6957617, 4368891, 9788741), + array(16660756, 7281060, -10830758, 12911820, 20108584, -8101676, -21722536, -8613148, 16250552, -11111103), + ), + array( + array(-19765507, 2390526, -16551031, 14161980, 1905286, 6414907, 4689584, 10604807, -30190403, 4782747), + array(-1354539, 14736941, -7367442, -13292886, 7710542, -14155590, -9981571, 4383045, 22546403, 437323), + array(31665577, -12180464, -16186830, 1491339, -18368625, 3294682, 27343084, 2786261, -30633590, -14097016), + ), + array( + array(-14467279, -683715, -33374107, 7448552, 19294360, 14334329, -19690631, 2355319, -19284671, -6114373), + array(15121312, -15796162, 6377020, -6031361, -10798111, -12957845, 18952177, 15496498, -29380133, 11754228), + array(-2637277, -13483075, 8488727, -14303896, 12728761, -1622493, 7141596, 11724556, 22761615, -10134141), + ), + array( + array(16918416, 11729663, -18083579, 3022987, -31015732, -13339659, -28741185, -12227393, 32851222, 11717399), + array(11166634, 7338049, -6722523, 4531520, -29468672, -7302055, 31474879, 3483633, -1193175, -4030831), + array(-185635, 9921305, 31456609, -13536438, -12013818, 13348923, 33142652, 6546660, -19985279, -3948376), + ), + array( + array(-32460596, 11266712, -11197107, -7899103, 31703694, 3855903, -8537131, -12833048, -30772034, -15486313), + array(-18006477, 12709068, 3991746, -6479188, -21491523, -10550425, -31135347, -16049879, 10928917, 3011958), + array(-6957757, -15594337, 31696059, 334240, 29576716, 14796075, -30831056, -12805180, 18008031, 10258577), + ), + array( + array(-22448644, 15655569, 7018479, -4410003, -30314266, -1201591, -1853465, 1367120, 25127874, 6671743), + array(29701166, -14373934, -10878120, 9279288, -17568, 13127210, 21382910, 11042292, 25838796, 4642684), + array(-20430234, 14955537, -24126347, 8124619, -5369288, -5990470, 30468147, -13900640, 18423289, 4177476), + ), + ) + ); + + /** + * See: libsodium's crypto_core/curve25519/ref10/base2.h + * + * @var array basically int[8][3] + */ + protected static $base2 = array( + array( + array(25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605), + array(-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378), + array(-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546), + ), + array( + array(15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024), + array(16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574), + array(30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357), + ), + array( + array(10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380), + array(4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306), + array(19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942), + ), + array( + array(5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766), + array(-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701), + array(28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300), + ), + array( + array(-22518993, -6692182, 14201702, -8745502, -23510406, 8844726, 18474211, -1361450, -13062696, 13821877), + array(-6455177, -7839871, 3374702, -4740862, -27098617, -10571707, 31655028, -7212327, 18853322, -14220951), + array(4566830, -12963868, -28974889, -12240689, -7602672, -2830569, -8514358, -10431137, 2207753, -3209784), + ), + array( + array(-25154831, -4185821, 29681144, 7868801, -6854661, -9423865, -12437364, -663000, -31111463, -16132436), + array(25576264, -2703214, 7349804, -11814844, 16472782, 9300885, 3844789, 15725684, 171356, 6466918), + array(23103977, 13316479, 9739013, -16149481, 817875, -15038942, 8965339, -14088058, -30714912, 16193877), + ), + array( + array(-33521811, 3180713, -2394130, 14003687, -16903474, -16270840, 17238398, 4729455, -18074513, 9256800), + array(-25182317, -4174131, 32336398, 5036987, -21236817, 11360617, 22616405, 9761698, -19827198, 630305), + array(-13720693, 2639453, -24237460, -7406481, 9494427, -5774029, -6554551, -15960994, -2449256, -14291300), + ), + array( + array(-3151181, -5046075, 9282714, 6866145, -31907062, -863023, -18940575, 15033784, 25105118, -7894876), + array(-24326370, 15950226, -31801215, -14592823, -11662737, -5090925, 1573892, -2625887, 2198790, -15804619), + array(-3099351, 10324967, -2241613, 7453183, -5446979, -2735503, -13812022, -16236442, -32461234, -12290683), + ) + ); + + /** + * 37095705934669439343138083508754565189542113879843219016388785533085940283555 + * + * @var array<int, int> + */ + protected static $d = array( + -10913610, + 13857413, + -15372611, + 6949391, + 114729, + -8787816, + -6275908, + -3247719, + -18696448, + -12055116 + ); + + /** + * 2 * d = 16295367250680780974490674513165176452449235426866156013048779062215315747161 + * + * @var array<int, int> + */ + protected static $d2 = array( + -21827239, + -5839606, + -30745221, + 13898782, + 229458, + 15978800, + -12551817, + -6495438, + 29715968, + 9444199 + ); + + /** + * sqrt(-1) + * + * @var array<int, int> + */ + protected static $sqrtm1 = array( + -32595792, + -7943725, + 9377950, + 3500415, + 12389472, + -272473, + -25146209, + -2005654, + 326686, + 11406482 + ); + + /** + * 1 / sqrt(a - d) + * + * @var array<int, int> + */ + protected static $invsqrtamd = array( + 6111485, + 4156064, + -27798727, + 12243468, + -25904040, + 120897, + 20826367, + -7060776, + 6093568, + -1986012 + ); + + /** + * sqrt(ad - 1) with a = -1 (mod p) + * + * @var array<int, int> + */ + protected static $sqrtadm1 = array( + 24849947, + -153582, + -23613485, + 6347715, + -21072328, + -667138, + -25271143, + -15367704, + -870347, + 14525639 + ); + + /** + * 1 - d ^ 2 + * + * @var array<int, int> + */ + protected static $onemsqd = array( + 6275446, + -16617371, + -22938544, + -3773710, + 11667077, + 7397348, + -27922721, + 1766195, + -24433858, + 672203 + ); + + /** + * (d - 1) ^ 2 + * @var array<int, int> + */ + protected static $sqdmone = array( + 15551795, + -11097455, + -13425098, + -10125071, + -11896535, + 10178284, + -26634327, + 4729244, + -5282110, + -10116402 + ); + + + /* + * 2^252+27742317777372353535851937790883648493 + static const unsigned char L[] = { + 0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, 0xd6, 0x9c, 0xf7, + 0xa2, 0xde, 0xf9, 0xde, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10 + }; + */ + const L = "\xed\xd3\xf5\x5c\x1a\x63\x12\x58\xd6\x9c\xf7\xa2\xde\xf9\xde\x14\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x10"; +} diff --git a/vendor/paragonie/sodium_compat/src/Core/Ed25519.php b/vendor/paragonie/sodium_compat/src/Core/Ed25519.php index c29f493..3f18c7d 100644 --- a/vendor/paragonie/sodium_compat/src/Core/Ed25519.php +++ b/vendor/paragonie/sodium_compat/src/Core/Ed25519.php @@ -1,551 +1,554 @@ -<?php
-
-if (class_exists('ParagonIE_Sodium_Core_Ed25519', false)) {
- return;
-}
-
-/**
- * Class ParagonIE_Sodium_Core_Ed25519
- */
-abstract class ParagonIE_Sodium_Core_Ed25519 extends ParagonIE_Sodium_Core_Curve25519
-{
- const KEYPAIR_BYTES = 96;
- const SEED_BYTES = 32;
- const SCALAR_BYTES = 32;
-
- /**
- * @internal You should not use this directly from another application
- *
- * @return string (96 bytes)
- * @throws Exception
- * @throws SodiumException
- * @throws TypeError
- */
- public static function keypair()
- {
- $seed = random_bytes(self::SEED_BYTES);
- $pk = '';
- $sk = '';
- self::seed_keypair($pk, $sk, $seed);
- return $sk . $pk;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $pk
- * @param string $sk
- * @param string $seed
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function seed_keypair(&$pk, &$sk, $seed)
- {
- if (self::strlen($seed) !== self::SEED_BYTES) {
- throw new RangeException('crypto_sign keypair seed must be 32 bytes long');
- }
-
- /** @var string $pk */
- $pk = self::publickey_from_secretkey($seed);
- $sk = $seed . $pk;
- return $sk;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $keypair
- * @return string
- * @throws TypeError
- */
- public static function secretkey($keypair)
- {
- if (self::strlen($keypair) !== self::KEYPAIR_BYTES) {
- throw new RangeException('crypto_sign keypair must be 96 bytes long');
- }
- return self::substr($keypair, 0, 64);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $keypair
- * @return string
- * @throws TypeError
- */
- public static function publickey($keypair)
- {
- if (self::strlen($keypair) !== self::KEYPAIR_BYTES) {
- throw new RangeException('crypto_sign keypair must be 96 bytes long');
- }
- return self::substr($keypair, 64, 32);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $sk
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function publickey_from_secretkey($sk)
- {
- /** @var string $sk */
- $sk = hash('sha512', self::substr($sk, 0, 32), true);
- $sk[0] = self::intToChr(
- self::chrToInt($sk[0]) & 248
- );
- $sk[31] = self::intToChr(
- (self::chrToInt($sk[31]) & 63) | 64
- );
- return self::sk_to_pk($sk);
- }
-
- /**
- * @param string $pk
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function pk_to_curve25519($pk)
- {
- if (self::small_order($pk)) {
- throw new SodiumException('Public key is on a small order');
- }
- $A = self::ge_frombytes_negate_vartime(self::substr($pk, 0, 32));
- $p1 = self::ge_mul_l($A);
- if (!self::fe_isnonzero($p1->X)) {
- throw new SodiumException('Unexpected zero result');
- }
-
- # fe_1(one_minus_y);
- # fe_sub(one_minus_y, one_minus_y, A.Y);
- # fe_invert(one_minus_y, one_minus_y);
- $one_minux_y = self::fe_invert(
- self::fe_sub(
- self::fe_1(),
- $A->Y
- )
- );
-
- # fe_1(x);
- # fe_add(x, x, A.Y);
- # fe_mul(x, x, one_minus_y);
- $x = self::fe_mul(
- self::fe_add(self::fe_1(), $A->Y),
- $one_minux_y
- );
-
- # fe_tobytes(curve25519_pk, x);
- return self::fe_tobytes($x);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $sk
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function sk_to_pk($sk)
- {
- return self::ge_p3_tobytes(
- self::ge_scalarmult_base(
- self::substr($sk, 0, 32)
- )
- );
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $message
- * @param string $sk
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function sign($message, $sk)
- {
- /** @var string $signature */
- $signature = self::sign_detached($message, $sk);
- return $signature . $message;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $message A signed message
- * @param string $pk Public key
- * @return string Message (without signature)
- * @throws SodiumException
- * @throws TypeError
- */
- public static function sign_open($message, $pk)
- {
- /** @var string $signature */
- $signature = self::substr($message, 0, 64);
-
- /** @var string $message */
- $message = self::substr($message, 64);
-
- if (self::verify_detached($signature, $message, $pk)) {
- return $message;
- }
- throw new SodiumException('Invalid signature');
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $message
- * @param string $sk
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function sign_detached($message, $sk)
- {
- # crypto_hash_sha512(az, sk, 32);
- $az = hash('sha512', self::substr($sk, 0, 32), true);
-
- # az[0] &= 248;
- # az[31] &= 63;
- # az[31] |= 64;
- $az[0] = self::intToChr(self::chrToInt($az[0]) & 248);
- $az[31] = self::intToChr((self::chrToInt($az[31]) & 63) | 64);
-
- # crypto_hash_sha512_init(&hs);
- # crypto_hash_sha512_update(&hs, az + 32, 32);
- # crypto_hash_sha512_update(&hs, m, mlen);
- # crypto_hash_sha512_final(&hs, nonce);
- $hs = hash_init('sha512');
- hash_update($hs, self::substr($az, 32, 32));
- hash_update($hs, $message);
- $nonceHash = hash_final($hs, true);
-
- # memmove(sig + 32, sk + 32, 32);
- $pk = self::substr($sk, 32, 32);
-
- # sc_reduce(nonce);
- # ge_scalarmult_base(&R, nonce);
- # ge_p3_tobytes(sig, &R);
- $nonce = self::sc_reduce($nonceHash) . self::substr($nonceHash, 32);
- $sig = self::ge_p3_tobytes(
- self::ge_scalarmult_base($nonce)
- );
-
- # crypto_hash_sha512_init(&hs);
- # crypto_hash_sha512_update(&hs, sig, 64);
- # crypto_hash_sha512_update(&hs, m, mlen);
- # crypto_hash_sha512_final(&hs, hram);
- $hs = hash_init('sha512');
- hash_update($hs, self::substr($sig, 0, 32));
- hash_update($hs, self::substr($pk, 0, 32));
- hash_update($hs, $message);
- $hramHash = hash_final($hs, true);
-
- # sc_reduce(hram);
- # sc_muladd(sig + 32, hram, az, nonce);
- $hram = self::sc_reduce($hramHash);
- $sigAfter = self::sc_muladd($hram, $az, $nonce);
- $sig = self::substr($sig, 0, 32) . self::substr($sigAfter, 0, 32);
-
- try {
- ParagonIE_Sodium_Compat::memzero($az);
- } catch (SodiumException $ex) {
- $az = null;
- }
- return $sig;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $sig
- * @param string $message
- * @param string $pk
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function verify_detached($sig, $message, $pk)
- {
- if (self::strlen($sig) < 64) {
- throw new SodiumException('Signature is too short');
- }
- if ((self::chrToInt($sig[63]) & 240) && self::check_S_lt_L(self::substr($sig, 32, 32))) {
- throw new SodiumException('S < L - Invalid signature');
- }
- if (self::small_order($sig)) {
- throw new SodiumException('Signature is on too small of an order');
- }
- if ((self::chrToInt($sig[63]) & 224) !== 0) {
- throw new SodiumException('Invalid signature');
- }
- $d = 0;
- for ($i = 0; $i < 32; ++$i) {
- $d |= self::chrToInt($pk[$i]);
- }
- if ($d === 0) {
- throw new SodiumException('All zero public key');
- }
-
- /** @var bool The original value of ParagonIE_Sodium_Compat::$fastMult */
- $orig = ParagonIE_Sodium_Compat::$fastMult;
-
- // Set ParagonIE_Sodium_Compat::$fastMult to true to speed up verification.
- ParagonIE_Sodium_Compat::$fastMult = true;
-
- /** @var ParagonIE_Sodium_Core_Curve25519_Ge_P3 $A */
- $A = self::ge_frombytes_negate_vartime($pk);
-
- /** @var string $hDigest */
- $hDigest = hash(
- 'sha512',
- self::substr($sig, 0, 32) .
- self::substr($pk, 0, 32) .
- $message,
- true
- );
-
- /** @var string $h */
- $h = self::sc_reduce($hDigest) . self::substr($hDigest, 32);
-
- /** @var ParagonIE_Sodium_Core_Curve25519_Ge_P2 $R */
- $R = self::ge_double_scalarmult_vartime(
- $h,
- $A,
- self::substr($sig, 32)
- );
-
- /** @var string $rcheck */
- $rcheck = self::ge_tobytes($R);
-
- // Reset ParagonIE_Sodium_Compat::$fastMult to what it was before.
- ParagonIE_Sodium_Compat::$fastMult = $orig;
-
- return self::verify_32($rcheck, self::substr($sig, 0, 32));
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $S
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function check_S_lt_L($S)
- {
- if (self::strlen($S) < 32) {
- throw new SodiumException('Signature must be 32 bytes');
- }
- $L = array(
- 0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
- 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10
- );
- $c = 0;
- $n = 1;
- $i = 32;
-
- /** @var array<int, int> $L */
- do {
- --$i;
- $x = self::chrToInt($S[$i]);
- $c |= (
- (($x - $L[$i]) >> 8) & $n
- );
- $n &= (
- (($x ^ $L[$i]) - 1) >> 8
- );
- } while ($i !== 0);
-
- return $c === 0;
- }
-
- /**
- * @param string $R
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function small_order($R)
- {
- /** @var array<int, array<int, int>> $blocklist */
- $blocklist = array(
- /* 0 (order 4) */
- array(
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
- ),
- /* 1 (order 1) */
- array(
- 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
- ),
- /* 2707385501144840649318225287225658788936804267575313519463743609750303402022 (order 8) */
- array(
- 0x26, 0xe8, 0x95, 0x8f, 0xc2, 0xb2, 0x27, 0xb0,
- 0x45, 0xc3, 0xf4, 0x89, 0xf2, 0xef, 0x98, 0xf0,
- 0xd5, 0xdf, 0xac, 0x05, 0xd3, 0xc6, 0x33, 0x39,
- 0xb1, 0x38, 0x02, 0x88, 0x6d, 0x53, 0xfc, 0x05
- ),
- /* 55188659117513257062467267217118295137698188065244968500265048394206261417927 (order 8) */
- array(
- 0xc7, 0x17, 0x6a, 0x70, 0x3d, 0x4d, 0xd8, 0x4f,
- 0xba, 0x3c, 0x0b, 0x76, 0x0d, 0x10, 0x67, 0x0f,
- 0x2a, 0x20, 0x53, 0xfa, 0x2c, 0x39, 0xcc, 0xc6,
- 0x4e, 0xc7, 0xfd, 0x77, 0x92, 0xac, 0x03, 0x7a
- ),
- /* p-1 (order 2) */
- array(
- 0x13, 0xe8, 0x95, 0x8f, 0xc2, 0xb2, 0x27, 0xb0,
- 0x45, 0xc3, 0xf4, 0x89, 0xf2, 0xef, 0x98, 0xf0,
- 0xd5, 0xdf, 0xac, 0x05, 0xd3, 0xc6, 0x33, 0x39,
- 0xb1, 0x38, 0x02, 0x88, 0x6d, 0x53, 0xfc, 0x85
- ),
- /* p (order 4) */
- array(
- 0xb4, 0x17, 0x6a, 0x70, 0x3d, 0x4d, 0xd8, 0x4f,
- 0xba, 0x3c, 0x0b, 0x76, 0x0d, 0x10, 0x67, 0x0f,
- 0x2a, 0x20, 0x53, 0xfa, 0x2c, 0x39, 0xcc, 0xc6,
- 0x4e, 0xc7, 0xfd, 0x77, 0x92, 0xac, 0x03, 0xfa
- ),
- /* p+1 (order 1) */
- array(
- 0xec, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f
- ),
- /* p+2707385501144840649318225287225658788936804267575313519463743609750303402022 (order 8) */
- array(
- 0xed, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f
- ),
- /* p+55188659117513257062467267217118295137698188065244968500265048394206261417927 (order 8) */
- array(
- 0xee, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f
- ),
- /* 2p-1 (order 2) */
- array(
- 0xd9, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
- ),
- /* 2p (order 4) */
- array(
- 0xda, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
- ),
- /* 2p+1 (order 1) */
- array(
- 0xdb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
- )
- );
- /** @var int $countBlocklist */
- $countBlocklist = count($blocklist);
-
- for ($i = 0; $i < $countBlocklist; ++$i) {
- $c = 0;
- for ($j = 0; $j < 32; ++$j) {
- $c |= self::chrToInt($R[$j]) ^ (int) $blocklist[$i][$j];
- }
- if ($c === 0) {
- return true;
- }
- }
- return false;
- }
-
- /**
- * @param string $s
- * @return string
- * @throws SodiumException
- */
- public static function scalar_complement($s)
- {
- $t_ = self::L . str_repeat("\x00", 32);
- sodium_increment($t_);
- $s_ = $s . str_repeat("\x00", 32);
- ParagonIE_Sodium_Compat::sub($t_, $s_);
- return self::sc_reduce($t_);
- }
-
- /**
- * @return string
- * @throws SodiumException
- */
- public static function scalar_random()
- {
- do {
- $r = ParagonIE_Sodium_Compat::randombytes_buf(self::SCALAR_BYTES);
- $r[self::SCALAR_BYTES - 1] = self::intToChr(
- self::chrToInt($r[self::SCALAR_BYTES - 1]) & 0x1f
- );
- } while (
- !self::check_S_lt_L($r) || ParagonIE_Sodium_Compat::is_zero($r)
- );
- return $r;
- }
-
- /**
- * @param string $s
- * @return string
- * @throws SodiumException
- */
- public static function scalar_negate($s)
- {
- $t_ = self::L . str_repeat("\x00", 32) ;
- $s_ = $s . str_repeat("\x00", 32) ;
- ParagonIE_Sodium_Compat::sub($t_, $s_);
- return self::sc_reduce($t_);
- }
-
- /**
- * @param string $a
- * @param string $b
- * @return string
- * @throws SodiumException
- */
- public static function scalar_add($a, $b)
- {
- $a_ = $a . str_repeat("\x00", 32);
- $b_ = $b . str_repeat("\x00", 32);
- ParagonIE_Sodium_Compat::add($a_, $b_);
- return self::sc_reduce($a_);
- }
-
- /**
- * @param string $x
- * @param string $y
- * @return string
- * @throws SodiumException
- */
- public static function scalar_sub($x, $y)
- {
- $yn = self::scalar_negate($y);
- return self::scalar_add($x, $yn);
- }
-}
+<?php + +if (class_exists('ParagonIE_Sodium_Core_Ed25519', false)) { + return; +} +if (!class_exists('ParagonIE_Sodium_Core_Curve25519', false)) { + require_once dirname(__FILE__) . '/Curve25519.php'; +} + +/** + * Class ParagonIE_Sodium_Core_Ed25519 + */ +abstract class ParagonIE_Sodium_Core_Ed25519 extends ParagonIE_Sodium_Core_Curve25519 +{ + const KEYPAIR_BYTES = 96; + const SEED_BYTES = 32; + const SCALAR_BYTES = 32; + + /** + * @internal You should not use this directly from another application + * + * @return string (96 bytes) + * @throws Exception + * @throws SodiumException + * @throws TypeError + */ + public static function keypair() + { + $seed = random_bytes(self::SEED_BYTES); + $pk = ''; + $sk = ''; + self::seed_keypair($pk, $sk, $seed); + return $sk . $pk; + } + + /** + * @internal You should not use this directly from another application + * + * @param string $pk + * @param string $sk + * @param string $seed + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function seed_keypair(&$pk, &$sk, $seed) + { + if (self::strlen($seed) !== self::SEED_BYTES) { + throw new RangeException('crypto_sign keypair seed must be 32 bytes long'); + } + + /** @var string $pk */ + $pk = self::publickey_from_secretkey($seed); + $sk = $seed . $pk; + return $sk; + } + + /** + * @internal You should not use this directly from another application + * + * @param string $keypair + * @return string + * @throws TypeError + */ + public static function secretkey($keypair) + { + if (self::strlen($keypair) !== self::KEYPAIR_BYTES) { + throw new RangeException('crypto_sign keypair must be 96 bytes long'); + } + return self::substr($keypair, 0, 64); + } + + /** + * @internal You should not use this directly from another application + * + * @param string $keypair + * @return string + * @throws TypeError + */ + public static function publickey($keypair) + { + if (self::strlen($keypair) !== self::KEYPAIR_BYTES) { + throw new RangeException('crypto_sign keypair must be 96 bytes long'); + } + return self::substr($keypair, 64, 32); + } + + /** + * @internal You should not use this directly from another application + * + * @param string $sk + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function publickey_from_secretkey($sk) + { + /** @var string $sk */ + $sk = hash('sha512', self::substr($sk, 0, 32), true); + $sk[0] = self::intToChr( + self::chrToInt($sk[0]) & 248 + ); + $sk[31] = self::intToChr( + (self::chrToInt($sk[31]) & 63) | 64 + ); + return self::sk_to_pk($sk); + } + + /** + * @param string $pk + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function pk_to_curve25519($pk) + { + if (self::small_order($pk)) { + throw new SodiumException('Public key is on a small order'); + } + $A = self::ge_frombytes_negate_vartime(self::substr($pk, 0, 32)); + $p1 = self::ge_mul_l($A); + if (!self::fe_isnonzero($p1->X)) { + throw new SodiumException('Unexpected zero result'); + } + + # fe_1(one_minus_y); + # fe_sub(one_minus_y, one_minus_y, A.Y); + # fe_invert(one_minus_y, one_minus_y); + $one_minux_y = self::fe_invert( + self::fe_sub( + self::fe_1(), + $A->Y + ) + ); + + # fe_1(x); + # fe_add(x, x, A.Y); + # fe_mul(x, x, one_minus_y); + $x = self::fe_mul( + self::fe_add(self::fe_1(), $A->Y), + $one_minux_y + ); + + # fe_tobytes(curve25519_pk, x); + return self::fe_tobytes($x); + } + + /** + * @internal You should not use this directly from another application + * + * @param string $sk + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function sk_to_pk($sk) + { + return self::ge_p3_tobytes( + self::ge_scalarmult_base( + self::substr($sk, 0, 32) + ) + ); + } + + /** + * @internal You should not use this directly from another application + * + * @param string $message + * @param string $sk + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function sign($message, $sk) + { + /** @var string $signature */ + $signature = self::sign_detached($message, $sk); + return $signature . $message; + } + + /** + * @internal You should not use this directly from another application + * + * @param string $message A signed message + * @param string $pk Public key + * @return string Message (without signature) + * @throws SodiumException + * @throws TypeError + */ + public static function sign_open($message, $pk) + { + /** @var string $signature */ + $signature = self::substr($message, 0, 64); + + /** @var string $message */ + $message = self::substr($message, 64); + + if (self::verify_detached($signature, $message, $pk)) { + return $message; + } + throw new SodiumException('Invalid signature'); + } + + /** + * @internal You should not use this directly from another application + * + * @param string $message + * @param string $sk + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function sign_detached($message, $sk) + { + # crypto_hash_sha512(az, sk, 32); + $az = hash('sha512', self::substr($sk, 0, 32), true); + + # az[0] &= 248; + # az[31] &= 63; + # az[31] |= 64; + $az[0] = self::intToChr(self::chrToInt($az[0]) & 248); + $az[31] = self::intToChr((self::chrToInt($az[31]) & 63) | 64); + + # crypto_hash_sha512_init(&hs); + # crypto_hash_sha512_update(&hs, az + 32, 32); + # crypto_hash_sha512_update(&hs, m, mlen); + # crypto_hash_sha512_final(&hs, nonce); + $hs = hash_init('sha512'); + hash_update($hs, self::substr($az, 32, 32)); + hash_update($hs, $message); + $nonceHash = hash_final($hs, true); + + # memmove(sig + 32, sk + 32, 32); + $pk = self::substr($sk, 32, 32); + + # sc_reduce(nonce); + # ge_scalarmult_base(&R, nonce); + # ge_p3_tobytes(sig, &R); + $nonce = self::sc_reduce($nonceHash) . self::substr($nonceHash, 32); + $sig = self::ge_p3_tobytes( + self::ge_scalarmult_base($nonce) + ); + + # crypto_hash_sha512_init(&hs); + # crypto_hash_sha512_update(&hs, sig, 64); + # crypto_hash_sha512_update(&hs, m, mlen); + # crypto_hash_sha512_final(&hs, hram); + $hs = hash_init('sha512'); + hash_update($hs, self::substr($sig, 0, 32)); + hash_update($hs, self::substr($pk, 0, 32)); + hash_update($hs, $message); + $hramHash = hash_final($hs, true); + + # sc_reduce(hram); + # sc_muladd(sig + 32, hram, az, nonce); + $hram = self::sc_reduce($hramHash); + $sigAfter = self::sc_muladd($hram, $az, $nonce); + $sig = self::substr($sig, 0, 32) . self::substr($sigAfter, 0, 32); + + try { + ParagonIE_Sodium_Compat::memzero($az); + } catch (SodiumException $ex) { + $az = null; + } + return $sig; + } + + /** + * @internal You should not use this directly from another application + * + * @param string $sig + * @param string $message + * @param string $pk + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function verify_detached($sig, $message, $pk) + { + if (self::strlen($sig) < 64) { + throw new SodiumException('Signature is too short'); + } + if ((self::chrToInt($sig[63]) & 240) && self::check_S_lt_L(self::substr($sig, 32, 32))) { + throw new SodiumException('S < L - Invalid signature'); + } + if (self::small_order($sig)) { + throw new SodiumException('Signature is on too small of an order'); + } + if ((self::chrToInt($sig[63]) & 224) !== 0) { + throw new SodiumException('Invalid signature'); + } + $d = 0; + for ($i = 0; $i < 32; ++$i) { + $d |= self::chrToInt($pk[$i]); + } + if ($d === 0) { + throw new SodiumException('All zero public key'); + } + + /** @var bool The original value of ParagonIE_Sodium_Compat::$fastMult */ + $orig = ParagonIE_Sodium_Compat::$fastMult; + + // Set ParagonIE_Sodium_Compat::$fastMult to true to speed up verification. + ParagonIE_Sodium_Compat::$fastMult = true; + + /** @var ParagonIE_Sodium_Core_Curve25519_Ge_P3 $A */ + $A = self::ge_frombytes_negate_vartime($pk); + + /** @var string $hDigest */ + $hDigest = hash( + 'sha512', + self::substr($sig, 0, 32) . + self::substr($pk, 0, 32) . + $message, + true + ); + + /** @var string $h */ + $h = self::sc_reduce($hDigest) . self::substr($hDigest, 32); + + /** @var ParagonIE_Sodium_Core_Curve25519_Ge_P2 $R */ + $R = self::ge_double_scalarmult_vartime( + $h, + $A, + self::substr($sig, 32) + ); + + /** @var string $rcheck */ + $rcheck = self::ge_tobytes($R); + + // Reset ParagonIE_Sodium_Compat::$fastMult to what it was before. + ParagonIE_Sodium_Compat::$fastMult = $orig; + + return self::verify_32($rcheck, self::substr($sig, 0, 32)); + } + + /** + * @internal You should not use this directly from another application + * + * @param string $S + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function check_S_lt_L($S) + { + if (self::strlen($S) < 32) { + throw new SodiumException('Signature must be 32 bytes'); + } + $L = array( + 0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, + 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10 + ); + $c = 0; + $n = 1; + $i = 32; + + /** @var array<int, int> $L */ + do { + --$i; + $x = self::chrToInt($S[$i]); + $c |= ( + (($x - $L[$i]) >> 8) & $n + ); + $n &= ( + (($x ^ $L[$i]) - 1) >> 8 + ); + } while ($i !== 0); + + return $c === 0; + } + + /** + * @param string $R + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function small_order($R) + { + /** @var array<int, array<int, int>> $blocklist */ + $blocklist = array( + /* 0 (order 4) */ + array( + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + ), + /* 1 (order 1) */ + array( + 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + ), + /* 2707385501144840649318225287225658788936804267575313519463743609750303402022 (order 8) */ + array( + 0x26, 0xe8, 0x95, 0x8f, 0xc2, 0xb2, 0x27, 0xb0, + 0x45, 0xc3, 0xf4, 0x89, 0xf2, 0xef, 0x98, 0xf0, + 0xd5, 0xdf, 0xac, 0x05, 0xd3, 0xc6, 0x33, 0x39, + 0xb1, 0x38, 0x02, 0x88, 0x6d, 0x53, 0xfc, 0x05 + ), + /* 55188659117513257062467267217118295137698188065244968500265048394206261417927 (order 8) */ + array( + 0xc7, 0x17, 0x6a, 0x70, 0x3d, 0x4d, 0xd8, 0x4f, + 0xba, 0x3c, 0x0b, 0x76, 0x0d, 0x10, 0x67, 0x0f, + 0x2a, 0x20, 0x53, 0xfa, 0x2c, 0x39, 0xcc, 0xc6, + 0x4e, 0xc7, 0xfd, 0x77, 0x92, 0xac, 0x03, 0x7a + ), + /* p-1 (order 2) */ + array( + 0x13, 0xe8, 0x95, 0x8f, 0xc2, 0xb2, 0x27, 0xb0, + 0x45, 0xc3, 0xf4, 0x89, 0xf2, 0xef, 0x98, 0xf0, + 0xd5, 0xdf, 0xac, 0x05, 0xd3, 0xc6, 0x33, 0x39, + 0xb1, 0x38, 0x02, 0x88, 0x6d, 0x53, 0xfc, 0x85 + ), + /* p (order 4) */ + array( + 0xb4, 0x17, 0x6a, 0x70, 0x3d, 0x4d, 0xd8, 0x4f, + 0xba, 0x3c, 0x0b, 0x76, 0x0d, 0x10, 0x67, 0x0f, + 0x2a, 0x20, 0x53, 0xfa, 0x2c, 0x39, 0xcc, 0xc6, + 0x4e, 0xc7, 0xfd, 0x77, 0x92, 0xac, 0x03, 0xfa + ), + /* p+1 (order 1) */ + array( + 0xec, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f + ), + /* p+2707385501144840649318225287225658788936804267575313519463743609750303402022 (order 8) */ + array( + 0xed, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f + ), + /* p+55188659117513257062467267217118295137698188065244968500265048394206261417927 (order 8) */ + array( + 0xee, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f + ), + /* 2p-1 (order 2) */ + array( + 0xd9, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + ), + /* 2p (order 4) */ + array( + 0xda, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + ), + /* 2p+1 (order 1) */ + array( + 0xdb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + ) + ); + /** @var int $countBlocklist */ + $countBlocklist = count($blocklist); + + for ($i = 0; $i < $countBlocklist; ++$i) { + $c = 0; + for ($j = 0; $j < 32; ++$j) { + $c |= self::chrToInt($R[$j]) ^ (int) $blocklist[$i][$j]; + } + if ($c === 0) { + return true; + } + } + return false; + } + + /** + * @param string $s + * @return string + * @throws SodiumException + */ + public static function scalar_complement($s) + { + $t_ = self::L . str_repeat("\x00", 32); + sodium_increment($t_); + $s_ = $s . str_repeat("\x00", 32); + ParagonIE_Sodium_Compat::sub($t_, $s_); + return self::sc_reduce($t_); + } + + /** + * @return string + * @throws SodiumException + */ + public static function scalar_random() + { + do { + $r = ParagonIE_Sodium_Compat::randombytes_buf(self::SCALAR_BYTES); + $r[self::SCALAR_BYTES - 1] = self::intToChr( + self::chrToInt($r[self::SCALAR_BYTES - 1]) & 0x1f + ); + } while ( + !self::check_S_lt_L($r) || ParagonIE_Sodium_Compat::is_zero($r) + ); + return $r; + } + + /** + * @param string $s + * @return string + * @throws SodiumException + */ + public static function scalar_negate($s) + { + $t_ = self::L . str_repeat("\x00", 32) ; + $s_ = $s . str_repeat("\x00", 32) ; + ParagonIE_Sodium_Compat::sub($t_, $s_); + return self::sc_reduce($t_); + } + + /** + * @param string $a + * @param string $b + * @return string + * @throws SodiumException + */ + public static function scalar_add($a, $b) + { + $a_ = $a . str_repeat("\x00", 32); + $b_ = $b . str_repeat("\x00", 32); + ParagonIE_Sodium_Compat::add($a_, $b_); + return self::sc_reduce($a_); + } + + /** + * @param string $x + * @param string $y + * @return string + * @throws SodiumException + */ + public static function scalar_sub($x, $y) + { + $yn = self::scalar_negate($y); + return self::scalar_add($x, $yn); + } +} diff --git a/vendor/paragonie/sodium_compat/src/Core/Poly1305/State.php b/vendor/paragonie/sodium_compat/src/Core/Poly1305/State.php index 4b64e04..cfaeb0b 100644 --- a/vendor/paragonie/sodium_compat/src/Core/Poly1305/State.php +++ b/vendor/paragonie/sodium_compat/src/Core/Poly1305/State.php @@ -210,43 +210,43 @@ class ParagonIE_Sodium_Core_Poly1305_State extends ParagonIE_Sodium_Core_Util /* h *= r */ $d0 = ( - self::mul($h0, $r0, 25) + - self::mul($s4, $h1, 26) + - self::mul($s3, $h2, 26) + - self::mul($s2, $h3, 26) + - self::mul($s1, $h4, 26) + self::mul($h0, $r0, 27) + + self::mul($s4, $h1, 27) + + self::mul($s3, $h2, 27) + + self::mul($s2, $h3, 27) + + self::mul($s1, $h4, 27) ); $d1 = ( - self::mul($h0, $r1, 25) + - self::mul($h1, $r0, 25) + - self::mul($s4, $h2, 26) + - self::mul($s3, $h3, 26) + - self::mul($s2, $h4, 26) + self::mul($h0, $r1, 27) + + self::mul($h1, $r0, 27) + + self::mul($s4, $h2, 27) + + self::mul($s3, $h3, 27) + + self::mul($s2, $h4, 27) ); $d2 = ( - self::mul($h0, $r2, 25) + - self::mul($h1, $r1, 25) + - self::mul($h2, $r0, 25) + - self::mul($s4, $h3, 26) + - self::mul($s3, $h4, 26) + self::mul($h0, $r2, 27) + + self::mul($h1, $r1, 27) + + self::mul($h2, $r0, 27) + + self::mul($s4, $h3, 27) + + self::mul($s3, $h4, 27) ); $d3 = ( - self::mul($h0, $r3, 25) + - self::mul($h1, $r2, 25) + - self::mul($h2, $r1, 25) + - self::mul($h3, $r0, 25) + - self::mul($s4, $h4, 26) + self::mul($h0, $r3, 27) + + self::mul($h1, $r2, 27) + + self::mul($h2, $r1, 27) + + self::mul($h3, $r0, 27) + + self::mul($s4, $h4, 27) ); $d4 = ( - self::mul($h0, $r4, 25) + - self::mul($h1, $r3, 25) + - self::mul($h2, $r2, 25) + - self::mul($h3, $r1, 25) + - self::mul($h4, $r0, 25) + self::mul($h0, $r4, 27) + + self::mul($h1, $r3, 27) + + self::mul($h2, $r2, 27) + + self::mul($h3, $r1, 27) + + self::mul($h4, $r0, 27) ); /* (partial) h %= p */ diff --git a/vendor/paragonie/sodium_compat/src/Core/Ristretto255.php b/vendor/paragonie/sodium_compat/src/Core/Ristretto255.php index 27dbbaa..2727260 100644 --- a/vendor/paragonie/sodium_compat/src/Core/Ristretto255.php +++ b/vendor/paragonie/sodium_compat/src/Core/Ristretto255.php @@ -1,707 +1,707 @@ -<?php
-
-/**
- * Class ParagonIE_Sodium_Core_Ristretto255
- */
-class ParagonIE_Sodium_Core_Ristretto255 extends ParagonIE_Sodium_Core_Ed25519
-{
- const crypto_core_ristretto255_HASHBYTES = 64;
- const HASH_SC_L = 48;
- const CORE_H2C_SHA256 = 1;
- const CORE_H2C_SHA512 = 2;
-
- /**
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $f
- * @param int $b
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- */
- public static function fe_cneg(ParagonIE_Sodium_Core_Curve25519_Fe $f, $b)
- {
- $negf = self::fe_neg($f);
- return self::fe_cmov($f, $negf, $b);
- }
-
- /**
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $f
- * @return ParagonIE_Sodium_Core_Curve25519_Fe
- * @throws SodiumException
- */
- public static function fe_abs(ParagonIE_Sodium_Core_Curve25519_Fe $f)
- {
- return self::fe_cneg($f, self::fe_isnegative($f));
- }
-
- /**
- * Returns 0 if this field element results in all NUL bytes.
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $f
- * @return int
- * @throws SodiumException
- */
- public static function fe_iszero(ParagonIE_Sodium_Core_Curve25519_Fe $f)
- {
- static $zero;
- if ($zero === null) {
- $zero = str_repeat("\x00", 32);
- }
- /** @var string $zero */
- $str = self::fe_tobytes($f);
-
- $d = 0;
- for ($i = 0; $i < 32; ++$i) {
- $d |= self::chrToInt($str[$i]);
- }
- return (($d - 1) >> 31) & 1;
- }
-
-
- /**
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $u
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $v
- * @return array{x: ParagonIE_Sodium_Core_Curve25519_Fe, nonsquare: int}
- *
- * @throws SodiumException
- */
- public static function ristretto255_sqrt_ratio_m1(
- ParagonIE_Sodium_Core_Curve25519_Fe $u,
- ParagonIE_Sodium_Core_Curve25519_Fe $v
- ) {
- $sqrtm1 = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$sqrtm1);
-
- $v3 = self::fe_mul(
- self::fe_sq($v),
- $v
- ); /* v3 = v^3 */
- $x = self::fe_mul(
- self::fe_mul(
- self::fe_sq($v3),
- $u
- ),
- $v
- ); /* x = uv^7 */
-
- $x = self::fe_mul(
- self::fe_mul(
- self::fe_pow22523($x), /* x = (uv^7)^((q-5)/8) */
- $v3
- ),
- $u
- ); /* x = uv^3(uv^7)^((q-5)/8) */
-
- $vxx = self::fe_mul(
- self::fe_sq($x),
- $v
- ); /* vx^2 */
-
- $m_root_check = self::fe_sub($vxx, $u); /* vx^2-u */
- $p_root_check = self::fe_add($vxx, $u); /* vx^2+u */
- $f_root_check = self::fe_mul($u, $sqrtm1); /* u*sqrt(-1) */
- $f_root_check = self::fe_add($vxx, $f_root_check); /* vx^2+u*sqrt(-1) */
-
- $has_m_root = self::fe_iszero($m_root_check);
- $has_p_root = self::fe_iszero($p_root_check);
- $has_f_root = self::fe_iszero($f_root_check);
-
- $x_sqrtm1 = self::fe_mul($x, $sqrtm1); /* x*sqrt(-1) */
-
- $x = self::fe_abs(
- self::fe_cmov($x, $x_sqrtm1, $has_p_root | $has_f_root)
- );
- return array(
- 'x' => $x,
- 'nonsquare' => $has_m_root | $has_p_root
- );
- }
-
- /**
- * @param string $s
- * @return int
- * @throws SodiumException
- */
- public static function ristretto255_point_is_canonical($s)
- {
- $c = (self::chrToInt($s[31]) & 0x7f) ^ 0x7f;
- for ($i = 30; $i > 0; --$i) {
- $c |= self::chrToInt($s[$i]) ^ 0xff;
- }
- $c = ($c - 1) >> 8;
- $d = (0xed - 1 - self::chrToInt($s[0])) >> 8;
- $e = self::chrToInt($s[31]) >> 7;
-
- return 1 - ((($c & $d) | $e | self::chrToInt($s[0])) & 1);
- }
-
- /**
- * @param string $s
- * @param bool $skipCanonicalCheck
- * @return array{h: ParagonIE_Sodium_Core_Curve25519_Ge_P3, res: int}
- * @throws SodiumException
- */
- public static function ristretto255_frombytes($s, $skipCanonicalCheck = false)
- {
- if (!$skipCanonicalCheck) {
- if (!self::ristretto255_point_is_canonical($s)) {
- throw new SodiumException('S is not canonical');
- }
- }
-
- $s_ = self::fe_frombytes($s);
- $ss = self::fe_sq($s_); /* ss = s^2 */
-
- $u1 = self::fe_sub(self::fe_1(), $ss); /* u1 = 1-ss */
- $u1u1 = self::fe_sq($u1); /* u1u1 = u1^2 */
-
- $u2 = self::fe_add(self::fe_1(), $ss); /* u2 = 1+ss */
- $u2u2 = self::fe_sq($u2); /* u2u2 = u2^2 */
-
- $v = self::fe_mul(
- ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$d),
- $u1u1
- ); /* v = d*u1^2 */
- $v = self::fe_neg($v); /* v = -d*u1^2 */
- $v = self::fe_sub($v, $u2u2); /* v = -(d*u1^2)-u2^2 */
- $v_u2u2 = self::fe_mul($v, $u2u2); /* v_u2u2 = v*u2^2 */
-
- // fe25519_1(one);
- // notsquare = ristretto255_sqrt_ratio_m1(inv_sqrt, one, v_u2u2);
- $one = self::fe_1();
- $result = self::ristretto255_sqrt_ratio_m1($one, $v_u2u2);
- $inv_sqrt = $result['x'];
- $notsquare = $result['nonsquare'];
-
- $h = new ParagonIE_Sodium_Core_Curve25519_Ge_P3();
-
- $h->X = self::fe_mul($inv_sqrt, $u2);
- $h->Y = self::fe_mul(self::fe_mul($inv_sqrt, $h->X), $v);
-
- $h->X = self::fe_mul($h->X, $s_);
- $h->X = self::fe_abs(
- self::fe_add($h->X, $h->X)
- );
- $h->Y = self::fe_mul($u1, $h->Y);
- $h->Z = self::fe_1();
- $h->T = self::fe_mul($h->X, $h->Y);
-
- $res = - ((1 - $notsquare) | self::fe_isnegative($h->T) | self::fe_iszero($h->Y));
- return array('h' => $h, 'res' => $res);
- }
-
- /**
- * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $h
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_p3_tobytes(ParagonIE_Sodium_Core_Curve25519_Ge_P3 $h)
- {
- $sqrtm1 = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$sqrtm1);
- $invsqrtamd = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$invsqrtamd);
-
- $u1 = self::fe_add($h->Z, $h->Y); /* u1 = Z+Y */
- $zmy = self::fe_sub($h->Z, $h->Y); /* zmy = Z-Y */
- $u1 = self::fe_mul($u1, $zmy); /* u1 = (Z+Y)*(Z-Y) */
- $u2 = self::fe_mul($h->X, $h->Y); /* u2 = X*Y */
-
- $u1_u2u2 = self::fe_mul(self::fe_sq($u2), $u1); /* u1_u2u2 = u1*u2^2 */
- $one = self::fe_1();
-
- // fe25519_1(one);
- // (void) ristretto255_sqrt_ratio_m1(inv_sqrt, one, u1_u2u2);
- $result = self::ristretto255_sqrt_ratio_m1($one, $u1_u2u2);
- $inv_sqrt = $result['x'];
-
- $den1 = self::fe_mul($inv_sqrt, $u1); /* den1 = inv_sqrt*u1 */
- $den2 = self::fe_mul($inv_sqrt, $u2); /* den2 = inv_sqrt*u2 */
- $z_inv = self::fe_mul($h->T, self::fe_mul($den1, $den2)); /* z_inv = den1*den2*T */
-
- $ix = self::fe_mul($h->X, $sqrtm1); /* ix = X*sqrt(-1) */
- $iy = self::fe_mul($h->Y, $sqrtm1); /* iy = Y*sqrt(-1) */
- $eden = self::fe_mul($den1, $invsqrtamd);
-
- $t_z_inv = self::fe_mul($h->T, $z_inv); /* t_z_inv = T*z_inv */
- $rotate = self::fe_isnegative($t_z_inv);
-
- $x_ = self::fe_copy($h->X);
- $y_ = self::fe_copy($h->Y);
- $den_inv = self::fe_copy($den2);
-
- $x_ = self::fe_cmov($x_, $iy, $rotate);
- $y_ = self::fe_cmov($y_, $ix, $rotate);
- $den_inv = self::fe_cmov($den_inv, $eden, $rotate);
-
- $x_z_inv = self::fe_mul($x_, $z_inv);
- $y_ = self::fe_cneg($y_, self::fe_isnegative($x_z_inv));
-
-
- // fe25519_sub(s_, h->Z, y_);
- // fe25519_mul(s_, den_inv, s_);
- // fe25519_abs(s_, s_);
- // fe25519_tobytes(s, s_);
- return self::fe_tobytes(
- self::fe_abs(
- self::fe_mul(
- $den_inv,
- self::fe_sub($h->Z, $y_)
- )
- )
- );
- }
-
- /**
- * @param ParagonIE_Sodium_Core_Curve25519_Fe $t
- * @return ParagonIE_Sodium_Core_Curve25519_Ge_P3
- *
- * @throws SodiumException
- */
- public static function ristretto255_elligator(ParagonIE_Sodium_Core_Curve25519_Fe $t)
- {
- $sqrtm1 = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$sqrtm1);
- $onemsqd = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$onemsqd);
- $d = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$d);
- $sqdmone = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$sqdmone);
- $sqrtadm1 = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$sqrtadm1);
-
- $one = self::fe_1();
- $r = self::fe_mul($sqrtm1, self::fe_sq($t)); /* r = sqrt(-1)*t^2 */
- $u = self::fe_mul(self::fe_add($r, $one), $onemsqd); /* u = (r+1)*(1-d^2) */
- $c = self::fe_neg(self::fe_1()); /* c = -1 */
- $rpd = self::fe_add($r, $d); /* rpd = r+d */
-
- $v = self::fe_mul(
- self::fe_sub(
- $c,
- self::fe_mul($r, $d)
- ),
- $rpd
- ); /* v = (c-r*d)*(r+d) */
-
- $result = self::ristretto255_sqrt_ratio_m1($u, $v);
- $s = $result['x'];
- $wasnt_square = 1 - $result['nonsquare'];
-
- $s_prime = self::fe_neg(
- self::fe_abs(
- self::fe_mul($s, $t)
- )
- ); /* s_prime = -|s*t| */
- $s = self::fe_cmov($s, $s_prime, $wasnt_square);
- $c = self::fe_cmov($c, $r, $wasnt_square);
-
- // fe25519_sub(n, r, one); /* n = r-1 */
- // fe25519_mul(n, n, c); /* n = c*(r-1) */
- // fe25519_mul(n, n, ed25519_sqdmone); /* n = c*(r-1)*(d-1)^2 */
- // fe25519_sub(n, n, v); /* n = c*(r-1)*(d-1)^2-v */
- $n = self::fe_sub(
- self::fe_mul(
- self::fe_mul(
- self::fe_sub($r, $one),
- $c
- ),
- $sqdmone
- ),
- $v
- ); /* n = c*(r-1)*(d-1)^2-v */
-
- $w0 = self::fe_mul(
- self::fe_add($s, $s),
- $v
- ); /* w0 = 2s*v */
-
- $w1 = self::fe_mul($n, $sqrtadm1); /* w1 = n*sqrt(ad-1) */
- $ss = self::fe_sq($s); /* ss = s^2 */
- $w2 = self::fe_sub($one, $ss); /* w2 = 1-s^2 */
- $w3 = self::fe_add($one, $ss); /* w3 = 1+s^2 */
-
- return new ParagonIE_Sodium_Core_Curve25519_Ge_P3(
- self::fe_mul($w0, $w3),
- self::fe_mul($w2, $w1),
- self::fe_mul($w1, $w3),
- self::fe_mul($w0, $w2)
- );
- }
-
- /**
- * @param string $h
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_from_hash($h)
- {
- if (self::strlen($h) !== 64) {
- throw new SodiumException('Hash must be 64 bytes');
- }
- //fe25519_frombytes(r0, h);
- //fe25519_frombytes(r1, h + 32);
- $r0 = self::fe_frombytes(self::substr($h, 0, 32));
- $r1 = self::fe_frombytes(self::substr($h, 32, 32));
-
- //ristretto255_elligator(&p0, r0);
- //ristretto255_elligator(&p1, r1);
- $p0 = self::ristretto255_elligator($r0);
- $p1 = self::ristretto255_elligator($r1);
-
- //ge25519_p3_to_cached(&p1_cached, &p1);
- //ge25519_add_cached(&p_p1p1, &p0, &p1_cached);
- $p_p1p1 = self::ge_add(
- $p0,
- self::ge_p3_to_cached($p1)
- );
-
- //ge25519_p1p1_to_p3(&p, &p_p1p1);
- //ristretto255_p3_tobytes(s, &p);
- return self::ristretto255_p3_tobytes(
- self::ge_p1p1_to_p3($p_p1p1)
- );
- }
-
- /**
- * @param string $p
- * @return int
- * @throws SodiumException
- */
- public static function is_valid_point($p)
- {
- $result = self::ristretto255_frombytes($p);
- if ($result['res'] !== 0) {
- return 0;
- }
- return 1;
- }
-
- /**
- * @param string $p
- * @param string $q
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_add($p, $q)
- {
- $p_res = self::ristretto255_frombytes($p);
- $q_res = self::ristretto255_frombytes($q);
- if ($p_res['res'] !== 0 || $q_res['res'] !== 0) {
- throw new SodiumException('Could not add points');
- }
- $p_p3 = $p_res['h'];
- $q_p3 = $q_res['h'];
- $q_cached = self::ge_p3_to_cached($q_p3);
- $r_p1p1 = self::ge_add($p_p3, $q_cached);
- $r_p3 = self::ge_p1p1_to_p3($r_p1p1);
- return self::ristretto255_p3_tobytes($r_p3);
- }
-
- /**
- * @param string $p
- * @param string $q
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_sub($p, $q)
- {
- $p_res = self::ristretto255_frombytes($p);
- $q_res = self::ristretto255_frombytes($q);
- if ($p_res['res'] !== 0 || $q_res['res'] !== 0) {
- throw new SodiumException('Could not add points');
- }
- $p_p3 = $p_res['h'];
- $q_p3 = $q_res['h'];
- $q_cached = self::ge_p3_to_cached($q_p3);
- $r_p1p1 = self::ge_sub($p_p3, $q_cached);
- $r_p3 = self::ge_p1p1_to_p3($r_p1p1);
- return self::ristretto255_p3_tobytes($r_p3);
- }
-
-
- /**
- * @param int $hLen
- * @param ?string $ctx
- * @param string $msg
- * @return string
- * @throws SodiumException
- * @psalm-suppress PossiblyInvalidArgument hash API
- */
- protected static function h2c_string_to_hash_sha256($hLen, $ctx, $msg)
- {
- $h = array_fill(0, $hLen, 0);
- $ctx_len = !is_null($ctx) ? self::strlen($ctx) : 0;
- if ($hLen > 0xff) {
- throw new SodiumException('Hash must be less than 256 bytes');
- }
-
- if ($ctx_len > 0xff) {
- $st = hash_init('sha256');
- self::hash_update($st, "H2C-OVERSIZE-DST-");
- self::hash_update($st, $ctx);
- $ctx = hash_final($st, true);
- $ctx_len = 32;
- }
- $t = array(0, $hLen, 0);
- $ux = str_repeat("\0", 64);
- $st = hash_init('sha256');
- self::hash_update($st, $ux);
- self::hash_update($st, $msg);
- self::hash_update($st, self::intArrayToString($t));
- self::hash_update($st, $ctx);
- self::hash_update($st, self::intToChr($ctx_len));
- $u0 = hash_final($st, true);
-
- for ($i = 0; $i < $hLen; $i += 64) {
- $ux = self::xorStrings($ux, $u0);
- ++$t[2];
- $st = hash_init('sha256');
- self::hash_update($st, $ux);
- self::hash_update($st, self::intToChr($t[2]));
- self::hash_update($st, $ctx);
- self::hash_update($st, self::intToChr($ctx_len));
- $ux = hash_final($st, true);
- $amount = min($hLen - $i, 64);
- for ($j = 0; $j < $amount; ++$j) {
- $h[$i + $j] = self::chrToInt($ux[$i]);
- }
- }
- return self::intArrayToString(array_slice($h, 0, $hLen));
- }
-
- /**
- * @param int $hLen
- * @param ?string $ctx
- * @param string $msg
- * @return string
- * @throws SodiumException
- * @psalm-suppress PossiblyInvalidArgument hash API
- */
- protected static function h2c_string_to_hash_sha512($hLen, $ctx, $msg)
- {
- $h = array_fill(0, $hLen, 0);
- $ctx_len = !is_null($ctx) ? self::strlen($ctx) : 0;
- if ($hLen > 0xff) {
- throw new SodiumException('Hash must be less than 256 bytes');
- }
-
- if ($ctx_len > 0xff) {
- $st = hash_init('sha256');
- self::hash_update($st, "H2C-OVERSIZE-DST-");
- self::hash_update($st, $ctx);
- $ctx = hash_final($st, true);
- $ctx_len = 32;
- }
- $t = array(0, $hLen, 0);
- $ux = str_repeat("\0", 128);
- $st = hash_init('sha512');
- self::hash_update($st, $ux);
- self::hash_update($st, $msg);
- self::hash_update($st, self::intArrayToString($t));
- self::hash_update($st, $ctx);
- self::hash_update($st, self::intToChr($ctx_len));
- $u0 = hash_final($st, true);
-
- for ($i = 0; $i < $hLen; $i += 128) {
- $ux = self::xorStrings($ux, $u0);
- ++$t[2];
- $st = hash_init('sha512');
- self::hash_update($st, $ux);
- self::hash_update($st, self::intToChr($t[2]));
- self::hash_update($st, $ctx);
- self::hash_update($st, self::intToChr($ctx_len));
- $ux = hash_final($st, true);
- $amount = min($hLen - $i, 128);
- for ($j = 0; $j < $amount; ++$j) {
- $h[$i + $j] = self::chrToInt($ux[$i]);
- }
- }
- return self::intArrayToString(array_slice($h, 0, $hLen));
- }
-
- /**
- * @param int $hLen
- * @param ?string $ctx
- * @param string $msg
- * @param int $hash_alg
- * @return string
- * @throws SodiumException
- */
- public static function h2c_string_to_hash($hLen, $ctx, $msg, $hash_alg)
- {
- switch ($hash_alg) {
- case self::CORE_H2C_SHA256:
- return self::h2c_string_to_hash_sha256($hLen, $ctx, $msg);
- case self::CORE_H2C_SHA512:
- return self::h2c_string_to_hash_sha512($hLen, $ctx, $msg);
- default:
- throw new SodiumException('Invalid H2C hash algorithm');
- }
- }
-
- /**
- * @param ?string $ctx
- * @param string $msg
- * @param int $hash_alg
- * @return string
- * @throws SodiumException
- */
- protected static function _string_to_element($ctx, $msg, $hash_alg)
- {
- return self::ristretto255_from_hash(
- self::h2c_string_to_hash(self::crypto_core_ristretto255_HASHBYTES, $ctx, $msg, $hash_alg)
- );
- }
-
- /**
- * @return string
- * @throws SodiumException
- * @throws Exception
- */
- public static function ristretto255_random()
- {
- return self::ristretto255_from_hash(
- ParagonIE_Sodium_Compat::randombytes_buf(self::crypto_core_ristretto255_HASHBYTES)
- );
- }
-
- /**
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_scalar_random()
- {
- return self::scalar_random();
- }
-
- /**
- * @param string $s
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_scalar_complement($s)
- {
- return self::scalar_complement($s);
- }
-
-
- /**
- * @param string $s
- * @return string
- */
- public static function ristretto255_scalar_invert($s)
- {
- return self::sc25519_invert($s);
- }
-
- /**
- * @param string $s
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_scalar_negate($s)
- {
- return self::scalar_negate($s);
- }
-
- /**
- * @param string $x
- * @param string $y
- * @return string
- */
- public static function ristretto255_scalar_add($x, $y)
- {
- return self::scalar_add($x, $y);
- }
-
- /**
- * @param string $x
- * @param string $y
- * @return string
- */
- public static function ristretto255_scalar_sub($x, $y)
- {
- return self::scalar_sub($x, $y);
- }
-
- /**
- * @param string $x
- * @param string $y
- * @return string
- */
- public static function ristretto255_scalar_mul($x, $y)
- {
- return self::sc25519_mul($x, $y);
- }
-
- /**
- * @param string $ctx
- * @param string $msg
- * @param int $hash_alg
- * @return string
- * @throws SodiumException
- */
- public static function ristretto255_scalar_from_string($ctx, $msg, $hash_alg)
- {
- $h = array_fill(0, 64, 0);
- $h_be = self::stringToIntArray(
- self::h2c_string_to_hash(
- self::HASH_SC_L, $ctx, $msg, $hash_alg
- )
- );
-
- for ($i = 0; $i < self::HASH_SC_L; ++$i) {
- $h[$i] = $h_be[self::HASH_SC_L - 1 - $i];
- }
- return self::ristretto255_scalar_reduce(self::intArrayToString($h));
- }
-
- /**
- * @param string $s
- * @return string
- */
- public static function ristretto255_scalar_reduce($s)
- {
- return self::sc_reduce($s);
- }
-
- /**
- * @param string $n
- * @param string $p
- * @return string
- * @throws SodiumException
- */
- public static function scalarmult_ristretto255($n, $p)
- {
- if (self::strlen($n) !== 32) {
- throw new SodiumException('Scalar must be 32 bytes, ' . self::strlen($p) . ' given.');
- }
- if (self::strlen($p) !== 32) {
- throw new SodiumException('Point must be 32 bytes, ' . self::strlen($p) . ' given.');
- }
- $result = self::ristretto255_frombytes($p);
- if ($result['res'] !== 0) {
- throw new SodiumException('Could not multiply points');
- }
- $P = $result['h'];
-
- $t = self::stringToIntArray($n);
- $t[31] &= 0x7f;
- $Q = self::ge_scalarmult(self::intArrayToString($t), $P);
- $q = self::ristretto255_p3_tobytes($Q);
- if (ParagonIE_Sodium_Compat::is_zero($q)) {
- throw new SodiumException('An unknown error has occurred');
- }
- return $q;
- }
-
- /**
- * @param string $n
- * @return string
- * @throws SodiumException
- */
- public static function scalarmult_ristretto255_base($n)
- {
- $t = self::stringToIntArray($n);
- $t[31] &= 0x7f;
- $Q = self::ge_scalarmult_base(self::intArrayToString($t));
- $q = self::ristretto255_p3_tobytes($Q);
- if (ParagonIE_Sodium_Compat::is_zero($q)) {
- throw new SodiumException('An unknown error has occurred');
- }
- return $q;
- }
-}
+<?php + +/** + * Class ParagonIE_Sodium_Core_Ristretto255 + */ +class ParagonIE_Sodium_Core_Ristretto255 extends ParagonIE_Sodium_Core_Ed25519 +{ + const crypto_core_ristretto255_HASHBYTES = 64; + const HASH_SC_L = 48; + const CORE_H2C_SHA256 = 1; + const CORE_H2C_SHA512 = 2; + + /** + * @param ParagonIE_Sodium_Core_Curve25519_Fe $f + * @param int $b + * @return ParagonIE_Sodium_Core_Curve25519_Fe + */ + public static function fe_cneg(ParagonIE_Sodium_Core_Curve25519_Fe $f, $b) + { + $negf = self::fe_neg($f); + return self::fe_cmov($f, $negf, $b); + } + + /** + * @param ParagonIE_Sodium_Core_Curve25519_Fe $f + * @return ParagonIE_Sodium_Core_Curve25519_Fe + * @throws SodiumException + */ + public static function fe_abs(ParagonIE_Sodium_Core_Curve25519_Fe $f) + { + return self::fe_cneg($f, self::fe_isnegative($f)); + } + + /** + * Returns 0 if this field element results in all NUL bytes. + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core_Curve25519_Fe $f + * @return int + * @throws SodiumException + */ + public static function fe_iszero(ParagonIE_Sodium_Core_Curve25519_Fe $f) + { + static $zero; + if ($zero === null) { + $zero = str_repeat("\x00", 32); + } + /** @var string $zero */ + $str = self::fe_tobytes($f); + + $d = 0; + for ($i = 0; $i < 32; ++$i) { + $d |= self::chrToInt($str[$i]); + } + return (($d - 1) >> 31) & 1; + } + + + /** + * @param ParagonIE_Sodium_Core_Curve25519_Fe $u + * @param ParagonIE_Sodium_Core_Curve25519_Fe $v + * @return array{x: ParagonIE_Sodium_Core_Curve25519_Fe, nonsquare: int} + * + * @throws SodiumException + */ + public static function ristretto255_sqrt_ratio_m1( + ParagonIE_Sodium_Core_Curve25519_Fe $u, + ParagonIE_Sodium_Core_Curve25519_Fe $v + ) { + $sqrtm1 = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$sqrtm1); + + $v3 = self::fe_mul( + self::fe_sq($v), + $v + ); /* v3 = v^3 */ + $x = self::fe_mul( + self::fe_mul( + self::fe_sq($v3), + $u + ), + $v + ); /* x = uv^7 */ + + $x = self::fe_mul( + self::fe_mul( + self::fe_pow22523($x), /* x = (uv^7)^((q-5)/8) */ + $v3 + ), + $u + ); /* x = uv^3(uv^7)^((q-5)/8) */ + + $vxx = self::fe_mul( + self::fe_sq($x), + $v + ); /* vx^2 */ + + $m_root_check = self::fe_sub($vxx, $u); /* vx^2-u */ + $p_root_check = self::fe_add($vxx, $u); /* vx^2+u */ + $f_root_check = self::fe_mul($u, $sqrtm1); /* u*sqrt(-1) */ + $f_root_check = self::fe_add($vxx, $f_root_check); /* vx^2+u*sqrt(-1) */ + + $has_m_root = self::fe_iszero($m_root_check); + $has_p_root = self::fe_iszero($p_root_check); + $has_f_root = self::fe_iszero($f_root_check); + + $x_sqrtm1 = self::fe_mul($x, $sqrtm1); /* x*sqrt(-1) */ + + $x = self::fe_abs( + self::fe_cmov($x, $x_sqrtm1, $has_p_root | $has_f_root) + ); + return array( + 'x' => $x, + 'nonsquare' => $has_m_root | $has_p_root + ); + } + + /** + * @param string $s + * @return int + * @throws SodiumException + */ + public static function ristretto255_point_is_canonical($s) + { + $c = (self::chrToInt($s[31]) & 0x7f) ^ 0x7f; + for ($i = 30; $i > 0; --$i) { + $c |= self::chrToInt($s[$i]) ^ 0xff; + } + $c = ($c - 1) >> 8; + $d = (0xed - 1 - self::chrToInt($s[0])) >> 8; + $e = self::chrToInt($s[31]) >> 7; + + return 1 - ((($c & $d) | $e | self::chrToInt($s[0])) & 1); + } + + /** + * @param string $s + * @param bool $skipCanonicalCheck + * @return array{h: ParagonIE_Sodium_Core_Curve25519_Ge_P3, res: int} + * @throws SodiumException + */ + public static function ristretto255_frombytes($s, $skipCanonicalCheck = false) + { + if (!$skipCanonicalCheck) { + if (!self::ristretto255_point_is_canonical($s)) { + throw new SodiumException('S is not canonical'); + } + } + + $s_ = self::fe_frombytes($s); + $ss = self::fe_sq($s_); /* ss = s^2 */ + + $u1 = self::fe_sub(self::fe_1(), $ss); /* u1 = 1-ss */ + $u1u1 = self::fe_sq($u1); /* u1u1 = u1^2 */ + + $u2 = self::fe_add(self::fe_1(), $ss); /* u2 = 1+ss */ + $u2u2 = self::fe_sq($u2); /* u2u2 = u2^2 */ + + $v = self::fe_mul( + ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$d), + $u1u1 + ); /* v = d*u1^2 */ + $v = self::fe_neg($v); /* v = -d*u1^2 */ + $v = self::fe_sub($v, $u2u2); /* v = -(d*u1^2)-u2^2 */ + $v_u2u2 = self::fe_mul($v, $u2u2); /* v_u2u2 = v*u2^2 */ + + // fe25519_1(one); + // notsquare = ristretto255_sqrt_ratio_m1(inv_sqrt, one, v_u2u2); + $one = self::fe_1(); + $result = self::ristretto255_sqrt_ratio_m1($one, $v_u2u2); + $inv_sqrt = $result['x']; + $notsquare = $result['nonsquare']; + + $h = new ParagonIE_Sodium_Core_Curve25519_Ge_P3(); + + $h->X = self::fe_mul($inv_sqrt, $u2); + $h->Y = self::fe_mul(self::fe_mul($inv_sqrt, $h->X), $v); + + $h->X = self::fe_mul($h->X, $s_); + $h->X = self::fe_abs( + self::fe_add($h->X, $h->X) + ); + $h->Y = self::fe_mul($u1, $h->Y); + $h->Z = self::fe_1(); + $h->T = self::fe_mul($h->X, $h->Y); + + $res = - ((1 - $notsquare) | self::fe_isnegative($h->T) | self::fe_iszero($h->Y)); + return array('h' => $h, 'res' => $res); + } + + /** + * @param ParagonIE_Sodium_Core_Curve25519_Ge_P3 $h + * @return string + * @throws SodiumException + */ + public static function ristretto255_p3_tobytes(ParagonIE_Sodium_Core_Curve25519_Ge_P3 $h) + { + $sqrtm1 = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$sqrtm1); + $invsqrtamd = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$invsqrtamd); + + $u1 = self::fe_add($h->Z, $h->Y); /* u1 = Z+Y */ + $zmy = self::fe_sub($h->Z, $h->Y); /* zmy = Z-Y */ + $u1 = self::fe_mul($u1, $zmy); /* u1 = (Z+Y)*(Z-Y) */ + $u2 = self::fe_mul($h->X, $h->Y); /* u2 = X*Y */ + + $u1_u2u2 = self::fe_mul(self::fe_sq($u2), $u1); /* u1_u2u2 = u1*u2^2 */ + $one = self::fe_1(); + + // fe25519_1(one); + // (void) ristretto255_sqrt_ratio_m1(inv_sqrt, one, u1_u2u2); + $result = self::ristretto255_sqrt_ratio_m1($one, $u1_u2u2); + $inv_sqrt = $result['x']; + + $den1 = self::fe_mul($inv_sqrt, $u1); /* den1 = inv_sqrt*u1 */ + $den2 = self::fe_mul($inv_sqrt, $u2); /* den2 = inv_sqrt*u2 */ + $z_inv = self::fe_mul($h->T, self::fe_mul($den1, $den2)); /* z_inv = den1*den2*T */ + + $ix = self::fe_mul($h->X, $sqrtm1); /* ix = X*sqrt(-1) */ + $iy = self::fe_mul($h->Y, $sqrtm1); /* iy = Y*sqrt(-1) */ + $eden = self::fe_mul($den1, $invsqrtamd); + + $t_z_inv = self::fe_mul($h->T, $z_inv); /* t_z_inv = T*z_inv */ + $rotate = self::fe_isnegative($t_z_inv); + + $x_ = self::fe_copy($h->X); + $y_ = self::fe_copy($h->Y); + $den_inv = self::fe_copy($den2); + + $x_ = self::fe_cmov($x_, $iy, $rotate); + $y_ = self::fe_cmov($y_, $ix, $rotate); + $den_inv = self::fe_cmov($den_inv, $eden, $rotate); + + $x_z_inv = self::fe_mul($x_, $z_inv); + $y_ = self::fe_cneg($y_, self::fe_isnegative($x_z_inv)); + + + // fe25519_sub(s_, h->Z, y_); + // fe25519_mul(s_, den_inv, s_); + // fe25519_abs(s_, s_); + // fe25519_tobytes(s, s_); + return self::fe_tobytes( + self::fe_abs( + self::fe_mul( + $den_inv, + self::fe_sub($h->Z, $y_) + ) + ) + ); + } + + /** + * @param ParagonIE_Sodium_Core_Curve25519_Fe $t + * @return ParagonIE_Sodium_Core_Curve25519_Ge_P3 + * + * @throws SodiumException + */ + public static function ristretto255_elligator(ParagonIE_Sodium_Core_Curve25519_Fe $t) + { + $sqrtm1 = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$sqrtm1); + $onemsqd = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$onemsqd); + $d = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$d); + $sqdmone = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$sqdmone); + $sqrtadm1 = ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(self::$sqrtadm1); + + $one = self::fe_1(); + $r = self::fe_mul($sqrtm1, self::fe_sq($t)); /* r = sqrt(-1)*t^2 */ + $u = self::fe_mul(self::fe_add($r, $one), $onemsqd); /* u = (r+1)*(1-d^2) */ + $c = self::fe_neg(self::fe_1()); /* c = -1 */ + $rpd = self::fe_add($r, $d); /* rpd = r+d */ + + $v = self::fe_mul( + self::fe_sub( + $c, + self::fe_mul($r, $d) + ), + $rpd + ); /* v = (c-r*d)*(r+d) */ + + $result = self::ristretto255_sqrt_ratio_m1($u, $v); + $s = $result['x']; + $wasnt_square = 1 - $result['nonsquare']; + + $s_prime = self::fe_neg( + self::fe_abs( + self::fe_mul($s, $t) + ) + ); /* s_prime = -|s*t| */ + $s = self::fe_cmov($s, $s_prime, $wasnt_square); + $c = self::fe_cmov($c, $r, $wasnt_square); + + // fe25519_sub(n, r, one); /* n = r-1 */ + // fe25519_mul(n, n, c); /* n = c*(r-1) */ + // fe25519_mul(n, n, ed25519_sqdmone); /* n = c*(r-1)*(d-1)^2 */ + // fe25519_sub(n, n, v); /* n = c*(r-1)*(d-1)^2-v */ + $n = self::fe_sub( + self::fe_mul( + self::fe_mul( + self::fe_sub($r, $one), + $c + ), + $sqdmone + ), + $v + ); /* n = c*(r-1)*(d-1)^2-v */ + + $w0 = self::fe_mul( + self::fe_add($s, $s), + $v + ); /* w0 = 2s*v */ + + $w1 = self::fe_mul($n, $sqrtadm1); /* w1 = n*sqrt(ad-1) */ + $ss = self::fe_sq($s); /* ss = s^2 */ + $w2 = self::fe_sub($one, $ss); /* w2 = 1-s^2 */ + $w3 = self::fe_add($one, $ss); /* w3 = 1+s^2 */ + + return new ParagonIE_Sodium_Core_Curve25519_Ge_P3( + self::fe_mul($w0, $w3), + self::fe_mul($w2, $w1), + self::fe_mul($w1, $w3), + self::fe_mul($w0, $w2) + ); + } + + /** + * @param string $h + * @return string + * @throws SodiumException + */ + public static function ristretto255_from_hash($h) + { + if (self::strlen($h) !== 64) { + throw new SodiumException('Hash must be 64 bytes'); + } + //fe25519_frombytes(r0, h); + //fe25519_frombytes(r1, h + 32); + $r0 = self::fe_frombytes(self::substr($h, 0, 32)); + $r1 = self::fe_frombytes(self::substr($h, 32, 32)); + + //ristretto255_elligator(&p0, r0); + //ristretto255_elligator(&p1, r1); + $p0 = self::ristretto255_elligator($r0); + $p1 = self::ristretto255_elligator($r1); + + //ge25519_p3_to_cached(&p1_cached, &p1); + //ge25519_add_cached(&p_p1p1, &p0, &p1_cached); + $p_p1p1 = self::ge_add( + $p0, + self::ge_p3_to_cached($p1) + ); + + //ge25519_p1p1_to_p3(&p, &p_p1p1); + //ristretto255_p3_tobytes(s, &p); + return self::ristretto255_p3_tobytes( + self::ge_p1p1_to_p3($p_p1p1) + ); + } + + /** + * @param string $p + * @return int + * @throws SodiumException + */ + public static function is_valid_point($p) + { + $result = self::ristretto255_frombytes($p); + if ($result['res'] !== 0) { + return 0; + } + return 1; + } + + /** + * @param string $p + * @param string $q + * @return string + * @throws SodiumException + */ + public static function ristretto255_add($p, $q) + { + $p_res = self::ristretto255_frombytes($p); + $q_res = self::ristretto255_frombytes($q); + if ($p_res['res'] !== 0 || $q_res['res'] !== 0) { + throw new SodiumException('Could not add points'); + } + $p_p3 = $p_res['h']; + $q_p3 = $q_res['h']; + $q_cached = self::ge_p3_to_cached($q_p3); + $r_p1p1 = self::ge_add($p_p3, $q_cached); + $r_p3 = self::ge_p1p1_to_p3($r_p1p1); + return self::ristretto255_p3_tobytes($r_p3); + } + + /** + * @param string $p + * @param string $q + * @return string + * @throws SodiumException + */ + public static function ristretto255_sub($p, $q) + { + $p_res = self::ristretto255_frombytes($p); + $q_res = self::ristretto255_frombytes($q); + if ($p_res['res'] !== 0 || $q_res['res'] !== 0) { + throw new SodiumException('Could not add points'); + } + $p_p3 = $p_res['h']; + $q_p3 = $q_res['h']; + $q_cached = self::ge_p3_to_cached($q_p3); + $r_p1p1 = self::ge_sub($p_p3, $q_cached); + $r_p3 = self::ge_p1p1_to_p3($r_p1p1); + return self::ristretto255_p3_tobytes($r_p3); + } + + + /** + * @param int $hLen + * @param ?string $ctx + * @param string $msg + * @return string + * @throws SodiumException + * @psalm-suppress PossiblyInvalidArgument hash API + */ + protected static function h2c_string_to_hash_sha256($hLen, $ctx, $msg) + { + $h = array_fill(0, $hLen, 0); + $ctx_len = !is_null($ctx) ? self::strlen($ctx) : 0; + if ($hLen > 0xff) { + throw new SodiumException('Hash must be less than 256 bytes'); + } + + if ($ctx_len > 0xff) { + $st = hash_init('sha256'); + self::hash_update($st, "H2C-OVERSIZE-DST-"); + self::hash_update($st, $ctx); + $ctx = hash_final($st, true); + $ctx_len = 32; + } + $t = array(0, $hLen, 0); + $ux = str_repeat("\0", 64); + $st = hash_init('sha256'); + self::hash_update($st, $ux); + self::hash_update($st, $msg); + self::hash_update($st, self::intArrayToString($t)); + self::hash_update($st, $ctx); + self::hash_update($st, self::intToChr($ctx_len)); + $u0 = hash_final($st, true); + + for ($i = 0; $i < $hLen; $i += 64) { + $ux = self::xorStrings($ux, $u0); + ++$t[2]; + $st = hash_init('sha256'); + self::hash_update($st, $ux); + self::hash_update($st, self::intToChr($t[2])); + self::hash_update($st, $ctx); + self::hash_update($st, self::intToChr($ctx_len)); + $ux = hash_final($st, true); + $amount = min($hLen - $i, 64); + for ($j = 0; $j < $amount; ++$j) { + $h[$i + $j] = self::chrToInt($ux[$i]); + } + } + return self::intArrayToString(array_slice($h, 0, $hLen)); + } + + /** + * @param int $hLen + * @param ?string $ctx + * @param string $msg + * @return string + * @throws SodiumException + * @psalm-suppress PossiblyInvalidArgument hash API + */ + protected static function h2c_string_to_hash_sha512($hLen, $ctx, $msg) + { + $h = array_fill(0, $hLen, 0); + $ctx_len = !is_null($ctx) ? self::strlen($ctx) : 0; + if ($hLen > 0xff) { + throw new SodiumException('Hash must be less than 256 bytes'); + } + + if ($ctx_len > 0xff) { + $st = hash_init('sha256'); + self::hash_update($st, "H2C-OVERSIZE-DST-"); + self::hash_update($st, $ctx); + $ctx = hash_final($st, true); + $ctx_len = 32; + } + $t = array(0, $hLen, 0); + $ux = str_repeat("\0", 128); + $st = hash_init('sha512'); + self::hash_update($st, $ux); + self::hash_update($st, $msg); + self::hash_update($st, self::intArrayToString($t)); + self::hash_update($st, $ctx); + self::hash_update($st, self::intToChr($ctx_len)); + $u0 = hash_final($st, true); + + for ($i = 0; $i < $hLen; $i += 128) { + $ux = self::xorStrings($ux, $u0); + ++$t[2]; + $st = hash_init('sha512'); + self::hash_update($st, $ux); + self::hash_update($st, self::intToChr($t[2])); + self::hash_update($st, $ctx); + self::hash_update($st, self::intToChr($ctx_len)); + $ux = hash_final($st, true); + $amount = min($hLen - $i, 128); + for ($j = 0; $j < $amount; ++$j) { + $h[$i + $j] = self::chrToInt($ux[$i]); + } + } + return self::intArrayToString(array_slice($h, 0, $hLen)); + } + + /** + * @param int $hLen + * @param ?string $ctx + * @param string $msg + * @param int $hash_alg + * @return string + * @throws SodiumException + */ + public static function h2c_string_to_hash($hLen, $ctx, $msg, $hash_alg) + { + switch ($hash_alg) { + case self::CORE_H2C_SHA256: + return self::h2c_string_to_hash_sha256($hLen, $ctx, $msg); + case self::CORE_H2C_SHA512: + return self::h2c_string_to_hash_sha512($hLen, $ctx, $msg); + default: + throw new SodiumException('Invalid H2C hash algorithm'); + } + } + + /** + * @param ?string $ctx + * @param string $msg + * @param int $hash_alg + * @return string + * @throws SodiumException + */ + protected static function _string_to_element($ctx, $msg, $hash_alg) + { + return self::ristretto255_from_hash( + self::h2c_string_to_hash(self::crypto_core_ristretto255_HASHBYTES, $ctx, $msg, $hash_alg) + ); + } + + /** + * @return string + * @throws SodiumException + * @throws Exception + */ + public static function ristretto255_random() + { + return self::ristretto255_from_hash( + ParagonIE_Sodium_Compat::randombytes_buf(self::crypto_core_ristretto255_HASHBYTES) + ); + } + + /** + * @return string + * @throws SodiumException + */ + public static function ristretto255_scalar_random() + { + return self::scalar_random(); + } + + /** + * @param string $s + * @return string + * @throws SodiumException + */ + public static function ristretto255_scalar_complement($s) + { + return self::scalar_complement($s); + } + + + /** + * @param string $s + * @return string + */ + public static function ristretto255_scalar_invert($s) + { + return self::sc25519_invert($s); + } + + /** + * @param string $s + * @return string + * @throws SodiumException + */ + public static function ristretto255_scalar_negate($s) + { + return self::scalar_negate($s); + } + + /** + * @param string $x + * @param string $y + * @return string + */ + public static function ristretto255_scalar_add($x, $y) + { + return self::scalar_add($x, $y); + } + + /** + * @param string $x + * @param string $y + * @return string + */ + public static function ristretto255_scalar_sub($x, $y) + { + return self::scalar_sub($x, $y); + } + + /** + * @param string $x + * @param string $y + * @return string + */ + public static function ristretto255_scalar_mul($x, $y) + { + return self::sc25519_mul($x, $y); + } + + /** + * @param string $ctx + * @param string $msg + * @param int $hash_alg + * @return string + * @throws SodiumException + */ + public static function ristretto255_scalar_from_string($ctx, $msg, $hash_alg) + { + $h = array_fill(0, 64, 0); + $h_be = self::stringToIntArray( + self::h2c_string_to_hash( + self::HASH_SC_L, $ctx, $msg, $hash_alg + ) + ); + + for ($i = 0; $i < self::HASH_SC_L; ++$i) { + $h[$i] = $h_be[self::HASH_SC_L - 1 - $i]; + } + return self::ristretto255_scalar_reduce(self::intArrayToString($h)); + } + + /** + * @param string $s + * @return string + */ + public static function ristretto255_scalar_reduce($s) + { + return self::sc_reduce($s); + } + + /** + * @param string $n + * @param string $p + * @return string + * @throws SodiumException + */ + public static function scalarmult_ristretto255($n, $p) + { + if (self::strlen($n) !== 32) { + throw new SodiumException('Scalar must be 32 bytes, ' . self::strlen($p) . ' given.'); + } + if (self::strlen($p) !== 32) { + throw new SodiumException('Point must be 32 bytes, ' . self::strlen($p) . ' given.'); + } + $result = self::ristretto255_frombytes($p); + if ($result['res'] !== 0) { + throw new SodiumException('Could not multiply points'); + } + $P = $result['h']; + + $t = self::stringToIntArray($n); + $t[31] &= 0x7f; + $Q = self::ge_scalarmult(self::intArrayToString($t), $P); + $q = self::ristretto255_p3_tobytes($Q); + if (ParagonIE_Sodium_Compat::is_zero($q)) { + throw new SodiumException('An unknown error has occurred'); + } + return $q; + } + + /** + * @param string $n + * @return string + * @throws SodiumException + */ + public static function scalarmult_ristretto255_base($n) + { + $t = self::stringToIntArray($n); + $t[31] &= 0x7f; + $Q = self::ge_scalarmult_base(self::intArrayToString($t)); + $q = self::ristretto255_p3_tobytes($Q); + if (ParagonIE_Sodium_Compat::is_zero($q)) { + throw new SodiumException('An unknown error has occurred'); + } + return $q; + } +} diff --git a/vendor/paragonie/sodium_compat/src/Core/SipHash.php b/vendor/paragonie/sodium_compat/src/Core/SipHash.php index 7667527..90c3b69 100644 --- a/vendor/paragonie/sodium_compat/src/Core/SipHash.php +++ b/vendor/paragonie/sodium_compat/src/Core/SipHash.php @@ -1,306 +1,306 @@ -<?php
-
-if (class_exists('ParagonIE_Sodium_Core_SipHash', false)) {
- return;
-}
-
-/**
- * Class ParagonIE_SodiumCompat_Core_SipHash
- *
- * Only uses 32-bit arithmetic, while the original SipHash used 64-bit integers
- */
-class ParagonIE_Sodium_Core_SipHash extends ParagonIE_Sodium_Core_Util
-{
- /**
- * @internal You should not use this directly from another application
- *
- * @param int[] $v
- * @return int[]
- *
- */
- public static function sipRound(array $v)
- {
- # v0 += v1;
- list($v[0], $v[1]) = self::add(
- array($v[0], $v[1]),
- array($v[2], $v[3])
- );
-
- # v1=ROTL(v1,13);
- list($v[2], $v[3]) = self::rotl_64((int) $v[2], (int) $v[3], 13);
-
- # v1 ^= v0;
- $v[2] = (int) $v[2] ^ (int) $v[0];
- $v[3] = (int) $v[3] ^ (int) $v[1];
-
- # v0=ROTL(v0,32);
- list($v[0], $v[1]) = self::rotl_64((int) $v[0], (int) $v[1], 32);
-
- # v2 += v3;
- list($v[4], $v[5]) = self::add(
- array((int) $v[4], (int) $v[5]),
- array((int) $v[6], (int) $v[7])
- );
-
- # v3=ROTL(v3,16);
- list($v[6], $v[7]) = self::rotl_64((int) $v[6], (int) $v[7], 16);
-
- # v3 ^= v2;
- $v[6] = (int) $v[6] ^ (int) $v[4];
- $v[7] = (int) $v[7] ^ (int) $v[5];
-
- # v0 += v3;
- list($v[0], $v[1]) = self::add(
- array((int) $v[0], (int) $v[1]),
- array((int) $v[6], (int) $v[7])
- );
-
- # v3=ROTL(v3,21);
- list($v[6], $v[7]) = self::rotl_64((int) $v[6], (int) $v[7], 21);
-
- # v3 ^= v0;
- $v[6] = (int) $v[6] ^ (int) $v[0];
- $v[7] = (int) $v[7] ^ (int) $v[1];
-
- # v2 += v1;
- list($v[4], $v[5]) = self::add(
- array((int) $v[4], (int) $v[5]),
- array((int) $v[2], (int) $v[3])
- );
-
- # v1=ROTL(v1,17);
- list($v[2], $v[3]) = self::rotl_64((int) $v[2], (int) $v[3], 17);
-
- # v1 ^= v2;;
- $v[2] = (int) $v[2] ^ (int) $v[4];
- $v[3] = (int) $v[3] ^ (int) $v[5];
-
- # v2=ROTL(v2,32)
- list($v[4], $v[5]) = self::rotl_64((int) $v[4], (int) $v[5], 32);
-
- return $v;
- }
-
- /**
- * Add two 32 bit integers representing a 64-bit integer.
- *
- * @internal You should not use this directly from another application
- *
- * @param int[] $a
- * @param int[] $b
- * @return array<int, mixed>
- */
- public static function add(array $a, array $b)
- {
- /** @var int $x1 */
- $x1 = $a[1] + $b[1];
- /** @var int $c */
- $c = $x1 >> 32; // Carry if ($a + $b) > 0xffffffff
- /** @var int $x0 */
- $x0 = $a[0] + $b[0] + $c;
- return array(
- $x0 & 0xffffffff,
- $x1 & 0xffffffff
- );
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param int $int0
- * @param int $int1
- * @param int $c
- * @return array<int, mixed>
- */
- public static function rotl_64($int0, $int1, $c)
- {
- $int0 &= 0xffffffff;
- $int1 &= 0xffffffff;
- $c &= 63;
- if ($c === 32) {
- return array($int1, $int0);
- }
- if ($c > 31) {
- $tmp = $int1;
- $int1 = $int0;
- $int0 = $tmp;
- $c &= 31;
- }
- if ($c === 0) {
- return array($int0, $int1);
- }
- return array(
- 0xffffffff & (
- ($int0 << $c)
- |
- ($int1 >> (32 - $c))
- ),
- 0xffffffff & (
- ($int1 << $c)
- |
- ($int0 >> (32 - $c))
- ),
- );
- }
-
- /**
- * Implements Siphash-2-4 using only 32-bit numbers.
- *
- * When we split an int into two, the higher bits go to the lower index.
- * e.g. 0xDEADBEEFAB10C92D becomes [
- * 0 => 0xDEADBEEF,
- * 1 => 0xAB10C92D
- * ].
- *
- * @internal You should not use this directly from another application
- *
- * @param string $in
- * @param string $key
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function sipHash24($in, $key)
- {
- $inlen = self::strlen($in);
-
- # /* "somepseudorandomlygeneratedbytes" */
- # u64 v0 = 0x736f6d6570736575ULL;
- # u64 v1 = 0x646f72616e646f6dULL;
- # u64 v2 = 0x6c7967656e657261ULL;
- # u64 v3 = 0x7465646279746573ULL;
- $v = array(
- 0x736f6d65, // 0
- 0x70736575, // 1
- 0x646f7261, // 2
- 0x6e646f6d, // 3
- 0x6c796765, // 4
- 0x6e657261, // 5
- 0x74656462, // 6
- 0x79746573 // 7
- );
- // v0 => $v[0], $v[1]
- // v1 => $v[2], $v[3]
- // v2 => $v[4], $v[5]
- // v3 => $v[6], $v[7]
-
- # u64 k0 = LOAD64_LE( k );
- # u64 k1 = LOAD64_LE( k + 8 );
- $k = array(
- self::load_4(self::substr($key, 4, 4)),
- self::load_4(self::substr($key, 0, 4)),
- self::load_4(self::substr($key, 12, 4)),
- self::load_4(self::substr($key, 8, 4))
- );
- // k0 => $k[0], $k[1]
- // k1 => $k[2], $k[3]
-
- # b = ( ( u64 )inlen ) << 56;
- $b = array(
- $inlen << 24,
- 0
- );
- // See docblock for why the 0th index gets the higher bits.
-
- # v3 ^= k1;
- $v[6] ^= $k[2];
- $v[7] ^= $k[3];
- # v2 ^= k0;
- $v[4] ^= $k[0];
- $v[5] ^= $k[1];
- # v1 ^= k1;
- $v[2] ^= $k[2];
- $v[3] ^= $k[3];
- # v0 ^= k0;
- $v[0] ^= $k[0];
- $v[1] ^= $k[1];
-
- $left = $inlen;
- # for ( ; in != end; in += 8 )
- while ($left >= 8) {
- # m = LOAD64_LE( in );
- $m = array(
- self::load_4(self::substr($in, 4, 4)),
- self::load_4(self::substr($in, 0, 4))
- );
-
- # v3 ^= m;
- $v[6] ^= $m[0];
- $v[7] ^= $m[1];
-
- # SIPROUND;
- # SIPROUND;
- $v = self::sipRound($v);
- $v = self::sipRound($v);
-
- # v0 ^= m;
- $v[0] ^= $m[0];
- $v[1] ^= $m[1];
-
- $in = self::substr($in, 8);
- $left -= 8;
- }
-
- # switch( left )
- # {
- # case 7: b |= ( ( u64 )in[ 6] ) << 48;
- # case 6: b |= ( ( u64 )in[ 5] ) << 40;
- # case 5: b |= ( ( u64 )in[ 4] ) << 32;
- # case 4: b |= ( ( u64 )in[ 3] ) << 24;
- # case 3: b |= ( ( u64 )in[ 2] ) << 16;
- # case 2: b |= ( ( u64 )in[ 1] ) << 8;
- # case 1: b |= ( ( u64 )in[ 0] ); break;
- # case 0: break;
- # }
- switch ($left) {
- case 7:
- $b[0] |= self::chrToInt($in[6]) << 16;
- case 6:
- $b[0] |= self::chrToInt($in[5]) << 8;
- case 5:
- $b[0] |= self::chrToInt($in[4]);
- case 4:
- $b[1] |= self::chrToInt($in[3]) << 24;
- case 3:
- $b[1] |= self::chrToInt($in[2]) << 16;
- case 2:
- $b[1] |= self::chrToInt($in[1]) << 8;
- case 1:
- $b[1] |= self::chrToInt($in[0]);
- case 0:
- break;
- }
- // See docblock for why the 0th index gets the higher bits.
-
- # v3 ^= b;
- $v[6] ^= $b[0];
- $v[7] ^= $b[1];
-
- # SIPROUND;
- # SIPROUND;
- $v = self::sipRound($v);
- $v = self::sipRound($v);
-
- # v0 ^= b;
- $v[0] ^= $b[0];
- $v[1] ^= $b[1];
-
- // Flip the lower 8 bits of v2 which is ($v[4], $v[5]) in our implementation
- # v2 ^= 0xff;
- $v[5] ^= 0xff;
-
- # SIPROUND;
- # SIPROUND;
- # SIPROUND;
- # SIPROUND;
- $v = self::sipRound($v);
- $v = self::sipRound($v);
- $v = self::sipRound($v);
- $v = self::sipRound($v);
-
- # b = v0 ^ v1 ^ v2 ^ v3;
- # STORE64_LE( out, b );
- return self::store32_le($v[1] ^ $v[3] ^ $v[5] ^ $v[7]) .
- self::store32_le($v[0] ^ $v[2] ^ $v[4] ^ $v[6]);
- }
-}
+<?php + +if (class_exists('ParagonIE_Sodium_Core_SipHash', false)) { + return; +} + +/** + * Class ParagonIE_SodiumCompat_Core_SipHash + * + * Only uses 32-bit arithmetic, while the original SipHash used 64-bit integers + */ +class ParagonIE_Sodium_Core_SipHash extends ParagonIE_Sodium_Core_Util +{ + /** + * @internal You should not use this directly from another application + * + * @param int[] $v + * @return int[] + * + */ + public static function sipRound(array $v) + { + # v0 += v1; + list($v[0], $v[1]) = self::add( + array($v[0], $v[1]), + array($v[2], $v[3]) + ); + + # v1=ROTL(v1,13); + list($v[2], $v[3]) = self::rotl_64((int) $v[2], (int) $v[3], 13); + + # v1 ^= v0; + $v[2] = (int) $v[2] ^ (int) $v[0]; + $v[3] = (int) $v[3] ^ (int) $v[1]; + + # v0=ROTL(v0,32); + list($v[0], $v[1]) = self::rotl_64((int) $v[0], (int) $v[1], 32); + + # v2 += v3; + list($v[4], $v[5]) = self::add( + array((int) $v[4], (int) $v[5]), + array((int) $v[6], (int) $v[7]) + ); + + # v3=ROTL(v3,16); + list($v[6], $v[7]) = self::rotl_64((int) $v[6], (int) $v[7], 16); + + # v3 ^= v2; + $v[6] = (int) $v[6] ^ (int) $v[4]; + $v[7] = (int) $v[7] ^ (int) $v[5]; + + # v0 += v3; + list($v[0], $v[1]) = self::add( + array((int) $v[0], (int) $v[1]), + array((int) $v[6], (int) $v[7]) + ); + + # v3=ROTL(v3,21); + list($v[6], $v[7]) = self::rotl_64((int) $v[6], (int) $v[7], 21); + + # v3 ^= v0; + $v[6] = (int) $v[6] ^ (int) $v[0]; + $v[7] = (int) $v[7] ^ (int) $v[1]; + + # v2 += v1; + list($v[4], $v[5]) = self::add( + array((int) $v[4], (int) $v[5]), + array((int) $v[2], (int) $v[3]) + ); + + # v1=ROTL(v1,17); + list($v[2], $v[3]) = self::rotl_64((int) $v[2], (int) $v[3], 17); + + # v1 ^= v2;; + $v[2] = (int) $v[2] ^ (int) $v[4]; + $v[3] = (int) $v[3] ^ (int) $v[5]; + + # v2=ROTL(v2,32) + list($v[4], $v[5]) = self::rotl_64((int) $v[4], (int) $v[5], 32); + + return $v; + } + + /** + * Add two 32 bit integers representing a 64-bit integer. + * + * @internal You should not use this directly from another application + * + * @param int[] $a + * @param int[] $b + * @return array<int, mixed> + */ + public static function add(array $a, array $b) + { + /** @var int $x1 */ + $x1 = $a[1] + $b[1]; + /** @var int $c */ + $c = $x1 >> 32; // Carry if ($a + $b) > 0xffffffff + /** @var int $x0 */ + $x0 = $a[0] + $b[0] + $c; + return array( + $x0 & 0xffffffff, + $x1 & 0xffffffff + ); + } + + /** + * @internal You should not use this directly from another application + * + * @param int $int0 + * @param int $int1 + * @param int $c + * @return array<int, mixed> + */ + public static function rotl_64($int0, $int1, $c) + { + $int0 &= 0xffffffff; + $int1 &= 0xffffffff; + $c &= 63; + if ($c === 32) { + return array($int1, $int0); + } + if ($c > 31) { + $tmp = $int1; + $int1 = $int0; + $int0 = $tmp; + $c &= 31; + } + if ($c === 0) { + return array($int0, $int1); + } + return array( + 0xffffffff & ( + ($int0 << $c) + | + ($int1 >> (32 - $c)) + ), + 0xffffffff & ( + ($int1 << $c) + | + ($int0 >> (32 - $c)) + ), + ); + } + + /** + * Implements Siphash-2-4 using only 32-bit numbers. + * + * When we split an int into two, the higher bits go to the lower index. + * e.g. 0xDEADBEEFAB10C92D becomes [ + * 0 => 0xDEADBEEF, + * 1 => 0xAB10C92D + * ]. + * + * @internal You should not use this directly from another application + * + * @param string $in + * @param string $key + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function sipHash24($in, $key) + { + $inlen = self::strlen($in); + + # /* "somepseudorandomlygeneratedbytes" */ + # u64 v0 = 0x736f6d6570736575ULL; + # u64 v1 = 0x646f72616e646f6dULL; + # u64 v2 = 0x6c7967656e657261ULL; + # u64 v3 = 0x7465646279746573ULL; + $v = array( + 0x736f6d65, // 0 + 0x70736575, // 1 + 0x646f7261, // 2 + 0x6e646f6d, // 3 + 0x6c796765, // 4 + 0x6e657261, // 5 + 0x74656462, // 6 + 0x79746573 // 7 + ); + // v0 => $v[0], $v[1] + // v1 => $v[2], $v[3] + // v2 => $v[4], $v[5] + // v3 => $v[6], $v[7] + + # u64 k0 = LOAD64_LE( k ); + # u64 k1 = LOAD64_LE( k + 8 ); + $k = array( + self::load_4(self::substr($key, 4, 4)), + self::load_4(self::substr($key, 0, 4)), + self::load_4(self::substr($key, 12, 4)), + self::load_4(self::substr($key, 8, 4)) + ); + // k0 => $k[0], $k[1] + // k1 => $k[2], $k[3] + + # b = ( ( u64 )inlen ) << 56; + $b = array( + $inlen << 24, + 0 + ); + // See docblock for why the 0th index gets the higher bits. + + # v3 ^= k1; + $v[6] ^= $k[2]; + $v[7] ^= $k[3]; + # v2 ^= k0; + $v[4] ^= $k[0]; + $v[5] ^= $k[1]; + # v1 ^= k1; + $v[2] ^= $k[2]; + $v[3] ^= $k[3]; + # v0 ^= k0; + $v[0] ^= $k[0]; + $v[1] ^= $k[1]; + + $left = $inlen; + # for ( ; in != end; in += 8 ) + while ($left >= 8) { + # m = LOAD64_LE( in ); + $m = array( + self::load_4(self::substr($in, 4, 4)), + self::load_4(self::substr($in, 0, 4)) + ); + + # v3 ^= m; + $v[6] ^= $m[0]; + $v[7] ^= $m[1]; + + # SIPROUND; + # SIPROUND; + $v = self::sipRound($v); + $v = self::sipRound($v); + + # v0 ^= m; + $v[0] ^= $m[0]; + $v[1] ^= $m[1]; + + $in = self::substr($in, 8); + $left -= 8; + } + + # switch( left ) + # { + # case 7: b |= ( ( u64 )in[ 6] ) << 48; + # case 6: b |= ( ( u64 )in[ 5] ) << 40; + # case 5: b |= ( ( u64 )in[ 4] ) << 32; + # case 4: b |= ( ( u64 )in[ 3] ) << 24; + # case 3: b |= ( ( u64 )in[ 2] ) << 16; + # case 2: b |= ( ( u64 )in[ 1] ) << 8; + # case 1: b |= ( ( u64 )in[ 0] ); break; + # case 0: break; + # } + switch ($left) { + case 7: + $b[0] |= self::chrToInt($in[6]) << 16; + case 6: + $b[0] |= self::chrToInt($in[5]) << 8; + case 5: + $b[0] |= self::chrToInt($in[4]); + case 4: + $b[1] |= self::chrToInt($in[3]) << 24; + case 3: + $b[1] |= self::chrToInt($in[2]) << 16; + case 2: + $b[1] |= self::chrToInt($in[1]) << 8; + case 1: + $b[1] |= self::chrToInt($in[0]); + case 0: + break; + } + // See docblock for why the 0th index gets the higher bits. + + # v3 ^= b; + $v[6] ^= $b[0]; + $v[7] ^= $b[1]; + + # SIPROUND; + # SIPROUND; + $v = self::sipRound($v); + $v = self::sipRound($v); + + # v0 ^= b; + $v[0] ^= $b[0]; + $v[1] ^= $b[1]; + + // Flip the lower 8 bits of v2 which is ($v[4], $v[5]) in our implementation + # v2 ^= 0xff; + $v[5] ^= 0xff; + + # SIPROUND; + # SIPROUND; + # SIPROUND; + # SIPROUND; + $v = self::sipRound($v); + $v = self::sipRound($v); + $v = self::sipRound($v); + $v = self::sipRound($v); + + # b = v0 ^ v1 ^ v2 ^ v3; + # STORE64_LE( out, b ); + return self::store32_le($v[1] ^ $v[3] ^ $v[5] ^ $v[7]) . + self::store32_le($v[0] ^ $v[2] ^ $v[4] ^ $v[6]); + } +} diff --git a/vendor/paragonie/sodium_compat/src/Core/Util.php b/vendor/paragonie/sodium_compat/src/Core/Util.php index 865f544..73e463f 100644 --- a/vendor/paragonie/sodium_compat/src/Core/Util.php +++ b/vendor/paragonie/sodium_compat/src/Core/Util.php @@ -1,942 +1,947 @@ -<?php
-
-if (class_exists('ParagonIE_Sodium_Core_Util', false)) {
- return;
-}
-
-/**
- * Class ParagonIE_Sodium_Core_Util
- */
-abstract class ParagonIE_Sodium_Core_Util
-{
- /**
- * @param int $integer
- * @param int $size (16, 32, 64)
- * @return int
- */
- public static function abs($integer, $size = 0)
- {
- /** @var int $realSize */
- $realSize = (PHP_INT_SIZE << 3) - 1;
- if ($size) {
- --$size;
- } else {
- /** @var int $size */
- $size = $realSize;
- }
-
- $negative = -(($integer >> $size) & 1);
- return (int) (
- ($integer ^ $negative)
- +
- (($negative >> $realSize) & 1)
- );
- }
-
- /**
- * Convert a binary string into a hexadecimal string without cache-timing
- * leaks
- *
- * @internal You should not use this directly from another application
- *
- * @param string $binaryString (raw binary)
- * @return string
- * @throws TypeError
- */
- public static function bin2hex($binaryString)
- {
- /* Type checks: */
- if (!is_string($binaryString)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($binaryString) . ' given.');
- }
-
- $hex = '';
- $len = self::strlen($binaryString);
- for ($i = 0; $i < $len; ++$i) {
- /** @var array<int, int> $chunk */
- $chunk = unpack('C', $binaryString[$i]);
- /** @var int $c */
- $c = $chunk[1] & 0xf;
- /** @var int $b */
- $b = $chunk[1] >> 4;
- $hex .= pack(
- 'CC',
- (87 + $b + ((($b - 10) >> 8) & ~38)),
- (87 + $c + ((($c - 10) >> 8) & ~38))
- );
- }
- return $hex;
- }
-
- /**
- * Convert a binary string into a hexadecimal string without cache-timing
- * leaks, returning uppercase letters (as per RFC 4648)
- *
- * @internal You should not use this directly from another application
- *
- * @param string $bin_string (raw binary)
- * @return string
- * @throws TypeError
- */
- public static function bin2hexUpper($bin_string)
- {
- $hex = '';
- $len = self::strlen($bin_string);
- for ($i = 0; $i < $len; ++$i) {
- /** @var array<int, int> $chunk */
- $chunk = unpack('C', $bin_string[$i]);
- /**
- * Lower 16 bits
- *
- * @var int $c
- */
- $c = $chunk[1] & 0xf;
-
- /**
- * Upper 16 bits
- * @var int $b
- */
- $b = $chunk[1] >> 4;
-
- /**
- * Use pack() and binary operators to turn the two integers
- * into hexadecimal characters. We don't use chr() here, because
- * it uses a lookup table internally and we want to avoid
- * cache-timing side-channels.
- */
- $hex .= pack(
- 'CC',
- (55 + $b + ((($b - 10) >> 8) & ~6)),
- (55 + $c + ((($c - 10) >> 8) & ~6))
- );
- }
- return $hex;
- }
-
- /**
- * Cache-timing-safe variant of ord()
- *
- * @internal You should not use this directly from another application
- *
- * @param string $chr
- * @return int
- * @throws SodiumException
- * @throws TypeError
- */
- public static function chrToInt($chr)
- {
- /* Type checks: */
- if (!is_string($chr)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($chr) . ' given.');
- }
- if (self::strlen($chr) !== 1) {
- throw new SodiumException('chrToInt() expects a string that is exactly 1 character long');
- }
- /** @var array<int, int> $chunk */
- $chunk = unpack('C', $chr);
- return (int) ($chunk[1]);
- }
-
- /**
- * Compares two strings.
- *
- * @internal You should not use this directly from another application
- *
- * @param string $left
- * @param string $right
- * @param int $len
- * @return int
- * @throws SodiumException
- * @throws TypeError
- */
- public static function compare($left, $right, $len = null)
- {
- $leftLen = self::strlen($left);
- $rightLen = self::strlen($right);
- if ($len === null) {
- $len = max($leftLen, $rightLen);
- $left = str_pad($left, $len, "\x00", STR_PAD_RIGHT);
- $right = str_pad($right, $len, "\x00", STR_PAD_RIGHT);
- }
-
- $gt = 0;
- $eq = 1;
- $i = $len;
- while ($i !== 0) {
- --$i;
- $gt |= ((self::chrToInt($right[$i]) - self::chrToInt($left[$i])) >> 8) & $eq;
- $eq &= ((self::chrToInt($right[$i]) ^ self::chrToInt($left[$i])) - 1) >> 8;
- }
- return ($gt + $gt + $eq) - 1;
- }
-
- /**
- * If a variable does not match a given type, throw a TypeError.
- *
- * @param mixed $mixedVar
- * @param string $type
- * @param int $argumentIndex
- * @throws TypeError
- * @throws SodiumException
- * @return void
- */
- public static function declareScalarType(&$mixedVar = null, $type = 'void', $argumentIndex = 0)
- {
- if (func_num_args() === 0) {
- /* Tautology, by default */
- return;
- }
- if (func_num_args() === 1) {
- throw new TypeError('Declared void, but passed a variable');
- }
- $realType = strtolower(gettype($mixedVar));
- $type = strtolower($type);
- switch ($type) {
- case 'null':
- if ($mixedVar !== null) {
- throw new TypeError('Argument ' . $argumentIndex . ' must be null, ' . $realType . ' given.');
- }
- break;
- case 'integer':
- case 'int':
- $allow = array('int', 'integer');
- if (!in_array($type, $allow)) {
- throw new TypeError('Argument ' . $argumentIndex . ' must be an integer, ' . $realType . ' given.');
- }
- $mixedVar = (int) $mixedVar;
- break;
- case 'boolean':
- case 'bool':
- $allow = array('bool', 'boolean');
- if (!in_array($type, $allow)) {
- throw new TypeError('Argument ' . $argumentIndex . ' must be a boolean, ' . $realType . ' given.');
- }
- $mixedVar = (bool) $mixedVar;
- break;
- case 'string':
- if (!is_string($mixedVar)) {
- throw new TypeError('Argument ' . $argumentIndex . ' must be a string, ' . $realType . ' given.');
- }
- $mixedVar = (string) $mixedVar;
- break;
- case 'decimal':
- case 'double':
- case 'float':
- $allow = array('decimal', 'double', 'float');
- if (!in_array($type, $allow)) {
- throw new TypeError('Argument ' . $argumentIndex . ' must be a float, ' . $realType . ' given.');
- }
- $mixedVar = (float) $mixedVar;
- break;
- case 'object':
- if (!is_object($mixedVar)) {
- throw new TypeError('Argument ' . $argumentIndex . ' must be an object, ' . $realType . ' given.');
- }
- break;
- case 'array':
- if (!is_array($mixedVar)) {
- if (is_object($mixedVar)) {
- if ($mixedVar instanceof ArrayAccess) {
- return;
- }
- }
- throw new TypeError('Argument ' . $argumentIndex . ' must be an array, ' . $realType . ' given.');
- }
- break;
- default:
- throw new SodiumException('Unknown type (' . $realType .') does not match expect type (' . $type . ')');
- }
- }
-
- /**
- * Evaluate whether or not two strings are equal (in constant-time)
- *
- * @param string $left
- * @param string $right
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function hashEquals($left, $right)
- {
- /* Type checks: */
- if (!is_string($left)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($left) . ' given.');
- }
- if (!is_string($right)) {
- throw new TypeError('Argument 2 must be a string, ' . gettype($right) . ' given.');
- }
-
- if (is_callable('hash_equals')) {
- return hash_equals($left, $right);
- }
- $d = 0;
- /** @var int $len */
- $len = self::strlen($left);
- if ($len !== self::strlen($right)) {
- return false;
- }
- for ($i = 0; $i < $len; ++$i) {
- $d |= self::chrToInt($left[$i]) ^ self::chrToInt($right[$i]);
- }
-
- if ($d !== 0) {
- return false;
- }
- return $left === $right;
- }
-
- /**
- * Catch hash_update() failures and throw instead of silently proceding
- *
- * @param HashContext|resource &$hs
- * @param string $data
- * @return void
- * @throws SodiumException
- * @psalm-suppress PossiblyInvalidArgument
- */
- protected static function hash_update(&$hs, $data)
- {
- if (!hash_update($hs, $data)) {
- throw new SodiumException('hash_update() failed');
- }
- }
-
- /**
- * Convert a hexadecimal string into a binary string without cache-timing
- * leaks
- *
- * @internal You should not use this directly from another application
- *
- * @param string $hexString
- * @param bool $strictPadding
- * @return string (raw binary)
- * @throws RangeException
- * @throws TypeError
- */
- public static function hex2bin($hexString, $strictPadding = false)
- {
- /* Type checks: */
- if (!is_string($hexString)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($hexString) . ' given.');
- }
-
- /** @var int $hex_pos */
- $hex_pos = 0;
- /** @var string $bin */
- $bin = '';
- /** @var int $c_acc */
- $c_acc = 0;
- /** @var int $hex_len */
- $hex_len = self::strlen($hexString);
- /** @var int $state */
- $state = 0;
- if (($hex_len & 1) !== 0) {
- if ($strictPadding) {
- throw new RangeException(
- 'Expected an even number of hexadecimal characters'
- );
- } else {
- $hexString = '0' . $hexString;
- ++$hex_len;
- }
- }
-
- $chunk = unpack('C*', $hexString);
- while ($hex_pos < $hex_len) {
- ++$hex_pos;
- /** @var int $c */
- $c = $chunk[$hex_pos];
- /** @var int $c_num */
- $c_num = $c ^ 48;
- /** @var int $c_num0 */
- $c_num0 = ($c_num - 10) >> 8;
- /** @var int $c_alpha */
- $c_alpha = ($c & ~32) - 55;
- /** @var int $c_alpha0 */
- $c_alpha0 = (($c_alpha - 10) ^ ($c_alpha - 16)) >> 8;
- if (($c_num0 | $c_alpha0) === 0) {
- throw new RangeException(
- 'hex2bin() only expects hexadecimal characters'
- );
- }
- /** @var int $c_val */
- $c_val = ($c_num0 & $c_num) | ($c_alpha & $c_alpha0);
- if ($state === 0) {
- $c_acc = $c_val * 16;
- } else {
- $bin .= pack('C', $c_acc | $c_val);
- }
- $state ^= 1;
- }
- return $bin;
- }
-
- /**
- * Turn an array of integers into a string
- *
- * @internal You should not use this directly from another application
- *
- * @param array<int, int> $ints
- * @return string
- */
- public static function intArrayToString(array $ints)
- {
- /** @var array<int, int> $args */
- $args = $ints;
- foreach ($args as $i => $v) {
- $args[$i] = (int) ($v & 0xff);
- }
- array_unshift($args, str_repeat('C', count($ints)));
- return (string) (call_user_func_array('pack', $args));
- }
-
- /**
- * Cache-timing-safe variant of ord()
- *
- * @internal You should not use this directly from another application
- *
- * @param int $int
- * @return string
- * @throws TypeError
- */
- public static function intToChr($int)
- {
- return pack('C', $int);
- }
-
- /**
- * Load a 3 character substring into an integer
- *
- * @internal You should not use this directly from another application
- *
- * @param string $string
- * @return int
- * @throws RangeException
- * @throws TypeError
- */
- public static function load_3($string)
- {
- /* Type checks: */
- if (!is_string($string)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($string) . ' given.');
- }
-
- /* Input validation: */
- if (self::strlen($string) < 3) {
- throw new RangeException(
- 'String must be 3 bytes or more; ' . self::strlen($string) . ' given.'
- );
- }
- /** @var array<int, int> $unpacked */
- $unpacked = unpack('V', $string . "\0");
- return (int) ($unpacked[1] & 0xffffff);
- }
-
- /**
- * Load a 4 character substring into an integer
- *
- * @internal You should not use this directly from another application
- *
- * @param string $string
- * @return int
- * @throws RangeException
- * @throws TypeError
- */
- public static function load_4($string)
- {
- /* Type checks: */
- if (!is_string($string)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($string) . ' given.');
- }
-
- /* Input validation: */
- if (self::strlen($string) < 4) {
- throw new RangeException(
- 'String must be 4 bytes or more; ' . self::strlen($string) . ' given.'
- );
- }
- /** @var array<int, int> $unpacked */
- $unpacked = unpack('V', $string);
- return (int) ($unpacked[1] & 0xffffffff);
- }
-
- /**
- * Load a 8 character substring into an integer
- *
- * @internal You should not use this directly from another application
- *
- * @param string $string
- * @return int
- * @throws RangeException
- * @throws SodiumException
- * @throws TypeError
- */
- public static function load64_le($string)
- {
- /* Type checks: */
- if (!is_string($string)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($string) . ' given.');
- }
-
- /* Input validation: */
- if (self::strlen($string) < 4) {
- throw new RangeException(
- 'String must be 4 bytes or more; ' . self::strlen($string) . ' given.'
- );
- }
- if (PHP_VERSION_ID >= 50603 && PHP_INT_SIZE === 8) {
- /** @var array<int, int> $unpacked */
- $unpacked = unpack('P', $string);
- return (int) $unpacked[1];
- }
-
- /** @var int $result */
- $result = (self::chrToInt($string[0]) & 0xff);
- $result |= (self::chrToInt($string[1]) & 0xff) << 8;
- $result |= (self::chrToInt($string[2]) & 0xff) << 16;
- $result |= (self::chrToInt($string[3]) & 0xff) << 24;
- $result |= (self::chrToInt($string[4]) & 0xff) << 32;
- $result |= (self::chrToInt($string[5]) & 0xff) << 40;
- $result |= (self::chrToInt($string[6]) & 0xff) << 48;
- $result |= (self::chrToInt($string[7]) & 0xff) << 56;
- return (int) $result;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $left
- * @param string $right
- * @return int
- * @throws SodiumException
- * @throws TypeError
- */
- public static function memcmp($left, $right)
- {
- if (self::hashEquals($left, $right)) {
- return 0;
- }
- return -1;
- }
-
- /**
- * Multiply two integers in constant-time
- *
- * Micro-architecture timing side-channels caused by how your CPU
- * implements multiplication are best prevented by never using the
- * multiplication operators and ensuring that our code always takes
- * the same number of operations to complete, regardless of the values
- * of $a and $b.
- *
- * @internal You should not use this directly from another application
- *
- * @param int $a
- * @param int $b
- * @param int $size Limits the number of operations (useful for small,
- * constant operands)
- * @return int
- */
- public static function mul($a, $b, $size = 0)
- {
- if (ParagonIE_Sodium_Compat::$fastMult) {
- return (int) ($a * $b);
- }
-
- static $defaultSize = null;
- /** @var int $defaultSize */
- if (!$defaultSize) {
- /** @var int $defaultSize */
- $defaultSize = (PHP_INT_SIZE << 3) - 1;
- }
- if ($size < 1) {
- /** @var int $size */
- $size = $defaultSize;
- }
- /** @var int $size */
-
- $c = 0;
-
- /**
- * Mask is either -1 or 0.
- *
- * -1 in binary looks like 0x1111 ... 1111
- * 0 in binary looks like 0x0000 ... 0000
- *
- * @var int
- */
- $mask = -(($b >> ((int) $defaultSize)) & 1);
-
- /**
- * Ensure $b is a positive integer, without creating
- * a branching side-channel
- *
- * @var int $b
- */
- $b = ($b & ~$mask) | ($mask & -$b);
-
- /**
- * Unless $size is provided:
- *
- * This loop always runs 32 times when PHP_INT_SIZE is 4.
- * This loop always runs 64 times when PHP_INT_SIZE is 8.
- */
- for ($i = $size; $i >= 0; --$i) {
- $c += (int) ($a & -($b & 1));
- $a <<= 1;
- $b >>= 1;
- }
-
- /**
- * If $b was negative, we then apply the same value to $c here.
- * It doesn't matter much if $a was negative; the $c += above would
- * have produced a negative integer to begin with. But a negative $b
- * makes $b >>= 1 never return 0, so we would end up with incorrect
- * results.
- *
- * The end result is what we'd expect from integer multiplication.
- */
- return (int) (($c & ~$mask) | ($mask & -$c));
- }
-
- /**
- * Convert any arbitrary numbers into two 32-bit integers that represent
- * a 64-bit integer.
- *
- * @internal You should not use this directly from another application
- *
- * @param int|float $num
- * @return array<int, int>
- */
- public static function numericTo64BitInteger($num)
- {
- $high = 0;
- /** @var int $low */
- $low = $num & 0xffffffff;
-
- if ((+(abs($num))) >= 1) {
- if ($num > 0) {
- /** @var int $high */
- $high = min((+(floor($num/4294967296))), 4294967295);
- } else {
- /** @var int $high */
- $high = ~~((+(ceil(($num - (+((~~($num)))))/4294967296))));
- }
- }
- return array((int) $high, (int) $low);
- }
-
- /**
- * Store a 24-bit integer into a string, treating it as big-endian.
- *
- * @internal You should not use this directly from another application
- *
- * @param int $int
- * @return string
- * @throws TypeError
- */
- public static function store_3($int)
- {
- /* Type checks: */
- if (!is_int($int)) {
- if (is_numeric($int)) {
- $int = (int) $int;
- } else {
- throw new TypeError('Argument 1 must be an integer, ' . gettype($int) . ' given.');
- }
- }
- /** @var string $packed */
- $packed = pack('N', $int);
- return self::substr($packed, 1, 3);
- }
-
- /**
- * Store a 32-bit integer into a string, treating it as little-endian.
- *
- * @internal You should not use this directly from another application
- *
- * @param int $int
- * @return string
- * @throws TypeError
- */
- public static function store32_le($int)
- {
- /* Type checks: */
- if (!is_int($int)) {
- if (is_numeric($int)) {
- $int = (int) $int;
- } else {
- throw new TypeError('Argument 1 must be an integer, ' . gettype($int) . ' given.');
- }
- }
-
- /** @var string $packed */
- $packed = pack('V', $int);
- return $packed;
- }
-
- /**
- * Store a 32-bit integer into a string, treating it as big-endian.
- *
- * @internal You should not use this directly from another application
- *
- * @param int $int
- * @return string
- * @throws TypeError
- */
- public static function store_4($int)
- {
- /* Type checks: */
- if (!is_int($int)) {
- if (is_numeric($int)) {
- $int = (int) $int;
- } else {
- throw new TypeError('Argument 1 must be an integer, ' . gettype($int) . ' given.');
- }
- }
-
- /** @var string $packed */
- $packed = pack('N', $int);
- return $packed;
- }
-
- /**
- * Stores a 64-bit integer as an string, treating it as little-endian.
- *
- * @internal You should not use this directly from another application
- *
- * @param int $int
- * @return string
- * @throws TypeError
- */
- public static function store64_le($int)
- {
- /* Type checks: */
- if (!is_int($int)) {
- if (is_numeric($int)) {
- $int = (int) $int;
- } else {
- throw new TypeError('Argument 1 must be an integer, ' . gettype($int) . ' given.');
- }
- }
-
- if (PHP_INT_SIZE === 8) {
- if (PHP_VERSION_ID >= 50603) {
- /** @var string $packed */
- $packed = pack('P', $int);
- return $packed;
- }
- return self::intToChr($int & 0xff) .
- self::intToChr(($int >> 8) & 0xff) .
- self::intToChr(($int >> 16) & 0xff) .
- self::intToChr(($int >> 24) & 0xff) .
- self::intToChr(($int >> 32) & 0xff) .
- self::intToChr(($int >> 40) & 0xff) .
- self::intToChr(($int >> 48) & 0xff) .
- self::intToChr(($int >> 56) & 0xff);
- }
- if ($int > PHP_INT_MAX) {
- list($hiB, $int) = self::numericTo64BitInteger($int);
- } else {
- $hiB = 0;
- }
- return
- self::intToChr(($int ) & 0xff) .
- self::intToChr(($int >> 8) & 0xff) .
- self::intToChr(($int >> 16) & 0xff) .
- self::intToChr(($int >> 24) & 0xff) .
- self::intToChr($hiB & 0xff) .
- self::intToChr(($hiB >> 8) & 0xff) .
- self::intToChr(($hiB >> 16) & 0xff) .
- self::intToChr(($hiB >> 24) & 0xff);
- }
-
- /**
- * Safe string length
- *
- * @internal You should not use this directly from another application
- *
- * @ref mbstring.func_overload
- *
- * @param string $str
- * @return int
- * @throws TypeError
- */
- public static function strlen($str)
- {
- /* Type checks: */
- if (!is_string($str)) {
- throw new TypeError('String expected');
- }
-
- return (int) (
- self::isMbStringOverride()
- ? mb_strlen($str, '8bit')
- : strlen($str)
- );
- }
-
- /**
- * Turn a string into an array of integers
- *
- * @internal You should not use this directly from another application
- *
- * @param string $string
- * @return array<int, int>
- * @throws TypeError
- */
- public static function stringToIntArray($string)
- {
- if (!is_string($string)) {
- throw new TypeError('String expected');
- }
- /**
- * @var array<int, int>
- */
- $values = array_values(
- unpack('C*', $string)
- );
- return $values;
- }
-
- /**
- * Safe substring
- *
- * @internal You should not use this directly from another application
- *
- * @ref mbstring.func_overload
- *
- * @param string $str
- * @param int $start
- * @param int $length
- * @return string
- * @throws TypeError
- */
- public static function substr($str, $start = 0, $length = null)
- {
- /* Type checks: */
- if (!is_string($str)) {
- throw new TypeError('String expected');
- }
-
- if ($length === 0) {
- return '';
- }
-
- if (self::isMbStringOverride()) {
- if (PHP_VERSION_ID < 50400 && $length === null) {
- $length = self::strlen($str);
- }
- $sub = (string) mb_substr($str, $start, $length, '8bit');
- } elseif ($length === null) {
- $sub = (string) substr($str, $start);
- } else {
- $sub = (string) substr($str, $start, $length);
- }
- if ($sub !== '') {
- return $sub;
- }
- return '';
- }
-
- /**
- * Compare a 16-character byte string in constant time.
- *
- * @internal You should not use this directly from another application
- *
- * @param string $a
- * @param string $b
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function verify_16($a, $b)
- {
- /* Type checks: */
- if (!is_string($a)) {
- throw new TypeError('String expected');
- }
- if (!is_string($b)) {
- throw new TypeError('String expected');
- }
- return self::hashEquals(
- self::substr($a, 0, 16),
- self::substr($b, 0, 16)
- );
- }
-
- /**
- * Compare a 32-character byte string in constant time.
- *
- * @internal You should not use this directly from another application
- *
- * @param string $a
- * @param string $b
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function verify_32($a, $b)
- {
- /* Type checks: */
- if (!is_string($a)) {
- throw new TypeError('String expected');
- }
- if (!is_string($b)) {
- throw new TypeError('String expected');
- }
- return self::hashEquals(
- self::substr($a, 0, 32),
- self::substr($b, 0, 32)
- );
- }
-
- /**
- * Calculate $a ^ $b for two strings.
- *
- * @internal You should not use this directly from another application
- *
- * @param string $a
- * @param string $b
- * @return string
- * @throws TypeError
- */
- public static function xorStrings($a, $b)
- {
- /* Type checks: */
- if (!is_string($a)) {
- throw new TypeError('Argument 1 must be a string');
- }
- if (!is_string($b)) {
- throw new TypeError('Argument 2 must be a string');
- }
-
- return (string) ($a ^ $b);
- }
-
- /**
- * Returns whether or not mbstring.func_overload is in effect.
- *
- * @internal You should not use this directly from another application
- *
- * Note: MB_OVERLOAD_STRING === 2, but we don't reference the constant
- * (for nuisance-free PHP 8 support)
- *
- * @return bool
- */
- protected static function isMbStringOverride()
- {
- static $mbstring = null;
-
- if ($mbstring === null) {
- $mbstring = extension_loaded('mbstring')
- && defined('MB_OVERLOAD_STRING')
- &&
- ((int) (ini_get('mbstring.func_overload')) & 2);
- // MB_OVERLOAD_STRING === 2
- }
- /** @var bool $mbstring */
-
- return $mbstring;
- }
-}
+<?php + +if (class_exists('ParagonIE_Sodium_Core_Util', false)) { + return; +} + +/** + * Class ParagonIE_Sodium_Core_Util + */ +abstract class ParagonIE_Sodium_Core_Util +{ + /** + * @param int $integer + * @param int $size (16, 32, 64) + * @return int + */ + public static function abs($integer, $size = 0) + { + /** @var int $realSize */ + $realSize = (PHP_INT_SIZE << 3) - 1; + if ($size) { + --$size; + } else { + /** @var int $size */ + $size = $realSize; + } + + $negative = -(($integer >> $size) & 1); + return (int) ( + ($integer ^ $negative) + + + (($negative >> $realSize) & 1) + ); + } + + /** + * Convert a binary string into a hexadecimal string without cache-timing + * leaks + * + * @internal You should not use this directly from another application + * + * @param string $binaryString (raw binary) + * @return string + * @throws TypeError + */ + public static function bin2hex($binaryString) + { + /* Type checks: */ + if (!is_string($binaryString)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($binaryString) . ' given.'); + } + + $hex = ''; + $len = self::strlen($binaryString); + for ($i = 0; $i < $len; ++$i) { + /** @var array<int, int> $chunk */ + $chunk = unpack('C', $binaryString[$i]); + /** @var int $c */ + $c = $chunk[1] & 0xf; + /** @var int $b */ + $b = $chunk[1] >> 4; + $hex .= pack( + 'CC', + (87 + $b + ((($b - 10) >> 8) & ~38)), + (87 + $c + ((($c - 10) >> 8) & ~38)) + ); + } + return $hex; + } + + /** + * Convert a binary string into a hexadecimal string without cache-timing + * leaks, returning uppercase letters (as per RFC 4648) + * + * @internal You should not use this directly from another application + * + * @param string $bin_string (raw binary) + * @return string + * @throws TypeError + */ + public static function bin2hexUpper($bin_string) + { + $hex = ''; + $len = self::strlen($bin_string); + for ($i = 0; $i < $len; ++$i) { + /** @var array<int, int> $chunk */ + $chunk = unpack('C', $bin_string[$i]); + /** + * Lower 16 bits + * + * @var int $c + */ + $c = $chunk[1] & 0xf; + + /** + * Upper 16 bits + * @var int $b + */ + $b = $chunk[1] >> 4; + + /** + * Use pack() and binary operators to turn the two integers + * into hexadecimal characters. We don't use chr() here, because + * it uses a lookup table internally and we want to avoid + * cache-timing side-channels. + */ + $hex .= pack( + 'CC', + (55 + $b + ((($b - 10) >> 8) & ~6)), + (55 + $c + ((($c - 10) >> 8) & ~6)) + ); + } + return $hex; + } + + /** + * Cache-timing-safe variant of ord() + * + * @internal You should not use this directly from another application + * + * @param string $chr + * @return int + * @throws SodiumException + * @throws TypeError + */ + public static function chrToInt($chr) + { + /* Type checks: */ + if (!is_string($chr)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($chr) . ' given.'); + } + if (self::strlen($chr) !== 1) { + throw new SodiumException('chrToInt() expects a string that is exactly 1 character long'); + } + /** @var array<int, int> $chunk */ + $chunk = unpack('C', $chr); + return (int) ($chunk[1]); + } + + /** + * Compares two strings. + * + * @internal You should not use this directly from another application + * + * @param string $left + * @param string $right + * @param int $len + * @return int + * @throws SodiumException + * @throws TypeError + */ + public static function compare($left, $right, $len = null) + { + $leftLen = self::strlen($left); + $rightLen = self::strlen($right); + if ($len === null) { + $len = max($leftLen, $rightLen); + $left = str_pad($left, $len, "\x00", STR_PAD_RIGHT); + $right = str_pad($right, $len, "\x00", STR_PAD_RIGHT); + } + + $gt = 0; + $eq = 1; + $i = $len; + while ($i !== 0) { + --$i; + $gt |= ((self::chrToInt($right[$i]) - self::chrToInt($left[$i])) >> 8) & $eq; + $eq &= ((self::chrToInt($right[$i]) ^ self::chrToInt($left[$i])) - 1) >> 8; + } + return ($gt + $gt + $eq) - 1; + } + + /** + * If a variable does not match a given type, throw a TypeError. + * + * @param mixed $mixedVar + * @param string $type + * @param int $argumentIndex + * @throws TypeError + * @throws SodiumException + * @return void + */ + public static function declareScalarType(&$mixedVar = null, $type = 'void', $argumentIndex = 0) + { + if (func_num_args() === 0) { + /* Tautology, by default */ + return; + } + if (func_num_args() === 1) { + throw new TypeError('Declared void, but passed a variable'); + } + $realType = strtolower(gettype($mixedVar)); + $type = strtolower($type); + switch ($type) { + case 'null': + if ($mixedVar !== null) { + throw new TypeError('Argument ' . $argumentIndex . ' must be null, ' . $realType . ' given.'); + } + break; + case 'integer': + case 'int': + $allow = array('int', 'integer'); + if (!in_array($type, $allow)) { + throw new TypeError('Argument ' . $argumentIndex . ' must be an integer, ' . $realType . ' given.'); + } + $mixedVar = (int) $mixedVar; + break; + case 'boolean': + case 'bool': + $allow = array('bool', 'boolean'); + if (!in_array($type, $allow)) { + throw new TypeError('Argument ' . $argumentIndex . ' must be a boolean, ' . $realType . ' given.'); + } + $mixedVar = (bool) $mixedVar; + break; + case 'string': + if (!is_string($mixedVar)) { + throw new TypeError('Argument ' . $argumentIndex . ' must be a string, ' . $realType . ' given.'); + } + $mixedVar = (string) $mixedVar; + break; + case 'decimal': + case 'double': + case 'float': + $allow = array('decimal', 'double', 'float'); + if (!in_array($type, $allow)) { + throw new TypeError('Argument ' . $argumentIndex . ' must be a float, ' . $realType . ' given.'); + } + $mixedVar = (float) $mixedVar; + break; + case 'object': + if (!is_object($mixedVar)) { + throw new TypeError('Argument ' . $argumentIndex . ' must be an object, ' . $realType . ' given.'); + } + break; + case 'array': + if (!is_array($mixedVar)) { + if (is_object($mixedVar)) { + if ($mixedVar instanceof ArrayAccess) { + return; + } + } + throw new TypeError('Argument ' . $argumentIndex . ' must be an array, ' . $realType . ' given.'); + } + break; + default: + throw new SodiumException('Unknown type (' . $realType .') does not match expect type (' . $type . ')'); + } + } + + /** + * Evaluate whether or not two strings are equal (in constant-time) + * + * @param string $left + * @param string $right + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function hashEquals($left, $right) + { + /* Type checks: */ + if (!is_string($left)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($left) . ' given.'); + } + if (!is_string($right)) { + throw new TypeError('Argument 2 must be a string, ' . gettype($right) . ' given.'); + } + + if (is_callable('hash_equals')) { + return hash_equals($left, $right); + } + $d = 0; + /** @var int $len */ + $len = self::strlen($left); + if ($len !== self::strlen($right)) { + return false; + } + for ($i = 0; $i < $len; ++$i) { + $d |= self::chrToInt($left[$i]) ^ self::chrToInt($right[$i]); + } + + if ($d !== 0) { + return false; + } + return $left === $right; + } + + /** + * Catch hash_update() failures and throw instead of silently proceeding + * + * @param HashContext|resource &$hs + * @param string $data + * @return void + * @throws SodiumException + * @psalm-suppress PossiblyInvalidArgument + */ + protected static function hash_update(&$hs, $data) + { + if (!hash_update($hs, $data)) { + throw new SodiumException('hash_update() failed'); + } + } + + /** + * Convert a hexadecimal string into a binary string without cache-timing + * leaks + * + * @internal You should not use this directly from another application + * + * @param string $hexString + * @param string $ignore + * @param bool $strictPadding + * @return string (raw binary) + * @throws RangeException + * @throws TypeError + */ + public static function hex2bin($hexString, $ignore = '', $strictPadding = false) + { + /* Type checks: */ + if (!is_string($hexString)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($hexString) . ' given.'); + } + if (!is_string($ignore)) { + throw new TypeError('Argument 2 must be a string, ' . gettype($hexString) . ' given.'); + } + + $hex_pos = 0; + $bin = ''; + $c_acc = 0; + $hex_len = self::strlen($hexString); + $state = 0; + if (($hex_len & 1) !== 0) { + if ($strictPadding) { + throw new RangeException( + 'Expected an even number of hexadecimal characters' + ); + } else { + $hexString = '0' . $hexString; + ++$hex_len; + } + } + + $chunk = unpack('C*', $hexString); + while ($hex_pos < $hex_len) { + ++$hex_pos; + /** @var int $c */ + $c = $chunk[$hex_pos]; + $c_num = $c ^ 48; + $c_num0 = ($c_num - 10) >> 8; + $c_alpha = ($c & ~32) - 55; + $c_alpha0 = (($c_alpha - 10) ^ ($c_alpha - 16)) >> 8; + if (($c_num0 | $c_alpha0) === 0) { + if ($ignore && $state === 0 && strpos($ignore, self::intToChr($c)) !== false) { + continue; + } + throw new RangeException( + 'hex2bin() only expects hexadecimal characters' + ); + } + $c_val = ($c_num0 & $c_num) | ($c_alpha & $c_alpha0); + if ($state === 0) { + $c_acc = $c_val * 16; + } else { + $bin .= pack('C', $c_acc | $c_val); + } + $state ^= 1; + } + return $bin; + } + + /** + * Turn an array of integers into a string + * + * @internal You should not use this directly from another application + * + * @param array<int, int> $ints + * @return string + */ + public static function intArrayToString(array $ints) + { + $args = $ints; + foreach ($args as $i => $v) { + $args[$i] = (int) ($v & 0xff); + } + array_unshift($args, str_repeat('C', count($ints))); + return (string) (call_user_func_array('pack', $args)); + } + + /** + * Cache-timing-safe variant of ord() + * + * @internal You should not use this directly from another application + * + * @param int $int + * @return string + * @throws TypeError + */ + public static function intToChr($int) + { + return pack('C', $int); + } + + /** + * Load a 3 character substring into an integer + * + * @internal You should not use this directly from another application + * + * @param string $string + * @return int + * @throws RangeException + * @throws TypeError + */ + public static function load_3($string) + { + /* Type checks: */ + if (!is_string($string)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($string) . ' given.'); + } + + /* Input validation: */ + if (self::strlen($string) < 3) { + throw new RangeException( + 'String must be 3 bytes or more; ' . self::strlen($string) . ' given.' + ); + } + /** @var array<int, int> $unpacked */ + $unpacked = unpack('V', $string . "\0"); + return (int) ($unpacked[1] & 0xffffff); + } + + /** + * Load a 4 character substring into an integer + * + * @internal You should not use this directly from another application + * + * @param string $string + * @return int + * @throws RangeException + * @throws TypeError + */ + public static function load_4($string) + { + /* Type checks: */ + if (!is_string($string)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($string) . ' given.'); + } + + /* Input validation: */ + if (self::strlen($string) < 4) { + throw new RangeException( + 'String must be 4 bytes or more; ' . self::strlen($string) . ' given.' + ); + } + /** @var array<int, int> $unpacked */ + $unpacked = unpack('V', $string); + return (int) $unpacked[1]; + } + + /** + * Load a 8 character substring into an integer + * + * @internal You should not use this directly from another application + * + * @param string $string + * @return int + * @throws RangeException + * @throws SodiumException + * @throws TypeError + */ + public static function load64_le($string) + { + /* Type checks: */ + if (!is_string($string)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($string) . ' given.'); + } + + /* Input validation: */ + if (self::strlen($string) < 4) { + throw new RangeException( + 'String must be 4 bytes or more; ' . self::strlen($string) . ' given.' + ); + } + if (PHP_VERSION_ID >= 50603 && PHP_INT_SIZE === 8) { + /** @var array<int, int> $unpacked */ + $unpacked = unpack('P', $string); + return (int) $unpacked[1]; + } + + /** @var int $result */ + $result = (self::chrToInt($string[0]) & 0xff); + $result |= (self::chrToInt($string[1]) & 0xff) << 8; + $result |= (self::chrToInt($string[2]) & 0xff) << 16; + $result |= (self::chrToInt($string[3]) & 0xff) << 24; + $result |= (self::chrToInt($string[4]) & 0xff) << 32; + $result |= (self::chrToInt($string[5]) & 0xff) << 40; + $result |= (self::chrToInt($string[6]) & 0xff) << 48; + $result |= (self::chrToInt($string[7]) & 0xff) << 56; + return (int) $result; + } + + /** + * @internal You should not use this directly from another application + * + * @param string $left + * @param string $right + * @return int + * @throws SodiumException + * @throws TypeError + */ + public static function memcmp($left, $right) + { + if (self::hashEquals($left, $right)) { + return 0; + } + return -1; + } + + /** + * Multiply two integers in constant-time + * + * Micro-architecture timing side-channels caused by how your CPU + * implements multiplication are best prevented by never using the + * multiplication operators and ensuring that our code always takes + * the same number of operations to complete, regardless of the values + * of $a and $b. + * + * @internal You should not use this directly from another application + * + * @param int $a + * @param int $b + * @param int $size Limits the number of operations (useful for small, + * constant operands) + * @return int + */ + public static function mul($a, $b, $size = 0) + { + if (ParagonIE_Sodium_Compat::$fastMult) { + return (int) ($a * $b); + } + + static $defaultSize = null; + /** @var int $defaultSize */ + if (!$defaultSize) { + /** @var int $defaultSize */ + $defaultSize = (PHP_INT_SIZE << 3) - 1; + } + if ($size < 1) { + /** @var int $size */ + $size = $defaultSize; + } + /** @var int $size */ + + $c = 0; + + /** + * Mask is either -1 or 0. + * + * -1 in binary looks like 0x1111 ... 1111 + * 0 in binary looks like 0x0000 ... 0000 + * + * @var int + */ + $mask = -(($b >> ((int) $defaultSize)) & 1); + + /** + * Ensure $b is a positive integer, without creating + * a branching side-channel + * + * @var int $b + */ + $b = ($b & ~$mask) | ($mask & -$b); + + /** + * Unless $size is provided: + * + * This loop always runs 32 times when PHP_INT_SIZE is 4. + * This loop always runs 64 times when PHP_INT_SIZE is 8. + */ + for ($i = $size; $i >= 0; --$i) { + $c += (int) ($a & -($b & 1)); + $a <<= 1; + $b >>= 1; + } + $c = (int) @($c & -1); + + /** + * If $b was negative, we then apply the same value to $c here. + * It doesn't matter much if $a was negative; the $c += above would + * have produced a negative integer to begin with. But a negative $b + * makes $b >>= 1 never return 0, so we would end up with incorrect + * results. + * + * The end result is what we'd expect from integer multiplication. + */ + return (int) (($c & ~$mask) | ($mask & -$c)); + } + + /** + * Convert any arbitrary numbers into two 32-bit integers that represent + * a 64-bit integer. + * + * @internal You should not use this directly from another application + * + * @param int|float $num + * @return array<int, int> + */ + public static function numericTo64BitInteger($num) + { + $high = 0; + /** @var int $low */ + if (PHP_INT_SIZE === 4) { + $low = (int) $num; + } else { + $low = $num & 0xffffffff; + } + + if ((+(abs($num))) >= 1) { + if ($num > 0) { + /** @var int $high */ + $high = min((+(floor($num/4294967296))), 4294967295); + } else { + /** @var int $high */ + $high = ~~((+(ceil(($num - (+((~~($num)))))/4294967296)))); + } + } + return array((int) $high, (int) $low); + } + + /** + * Store a 24-bit integer into a string, treating it as big-endian. + * + * @internal You should not use this directly from another application + * + * @param int $int + * @return string + * @throws TypeError + */ + public static function store_3($int) + { + /* Type checks: */ + if (!is_int($int)) { + if (is_numeric($int)) { + $int = (int) $int; + } else { + throw new TypeError('Argument 1 must be an integer, ' . gettype($int) . ' given.'); + } + } + /** @var string $packed */ + $packed = pack('N', $int); + return self::substr($packed, 1, 3); + } + + /** + * Store a 32-bit integer into a string, treating it as little-endian. + * + * @internal You should not use this directly from another application + * + * @param int $int + * @return string + * @throws TypeError + */ + public static function store32_le($int) + { + /* Type checks: */ + if (!is_int($int)) { + if (is_numeric($int)) { + $int = (int) $int; + } else { + throw new TypeError('Argument 1 must be an integer, ' . gettype($int) . ' given.'); + } + } + + /** @var string $packed */ + $packed = pack('V', $int); + return $packed; + } + + /** + * Store a 32-bit integer into a string, treating it as big-endian. + * + * @internal You should not use this directly from another application + * + * @param int $int + * @return string + * @throws TypeError + */ + public static function store_4($int) + { + /* Type checks: */ + if (!is_int($int)) { + if (is_numeric($int)) { + $int = (int) $int; + } else { + throw new TypeError('Argument 1 must be an integer, ' . gettype($int) . ' given.'); + } + } + + /** @var string $packed */ + $packed = pack('N', $int); + return $packed; + } + + /** + * Stores a 64-bit integer as an string, treating it as little-endian. + * + * @internal You should not use this directly from another application + * + * @param int $int + * @return string + * @throws TypeError + */ + public static function store64_le($int) + { + /* Type checks: */ + if (!is_int($int)) { + if (is_numeric($int)) { + $int = (int) $int; + } else { + throw new TypeError('Argument 1 must be an integer, ' . gettype($int) . ' given.'); + } + } + + if (PHP_INT_SIZE === 8) { + if (PHP_VERSION_ID >= 50603) { + /** @var string $packed */ + $packed = pack('P', $int); + return $packed; + } + return self::intToChr($int & 0xff) . + self::intToChr(($int >> 8) & 0xff) . + self::intToChr(($int >> 16) & 0xff) . + self::intToChr(($int >> 24) & 0xff) . + self::intToChr(($int >> 32) & 0xff) . + self::intToChr(($int >> 40) & 0xff) . + self::intToChr(($int >> 48) & 0xff) . + self::intToChr(($int >> 56) & 0xff); + } + if ($int > PHP_INT_MAX) { + list($hiB, $int) = self::numericTo64BitInteger($int); + } else { + $hiB = 0; + } + return + self::intToChr(($int ) & 0xff) . + self::intToChr(($int >> 8) & 0xff) . + self::intToChr(($int >> 16) & 0xff) . + self::intToChr(($int >> 24) & 0xff) . + self::intToChr($hiB & 0xff) . + self::intToChr(($hiB >> 8) & 0xff) . + self::intToChr(($hiB >> 16) & 0xff) . + self::intToChr(($hiB >> 24) & 0xff); + } + + /** + * Safe string length + * + * @internal You should not use this directly from another application + * + * @ref mbstring.func_overload + * + * @param string $str + * @return int + * @throws TypeError + */ + public static function strlen($str) + { + /* Type checks: */ + if (!is_string($str)) { + throw new TypeError('String expected'); + } + + return (int) ( + self::isMbStringOverride() + ? mb_strlen($str, '8bit') + : strlen($str) + ); + } + + /** + * Turn a string into an array of integers + * + * @internal You should not use this directly from another application + * + * @param string $string + * @return array<int, int> + * @throws TypeError + */ + public static function stringToIntArray($string) + { + if (!is_string($string)) { + throw new TypeError('String expected'); + } + /** + * @var array<int, int> + */ + $values = array_values( + unpack('C*', $string) + ); + return $values; + } + + /** + * Safe substring + * + * @internal You should not use this directly from another application + * + * @ref mbstring.func_overload + * + * @param string $str + * @param int $start + * @param int $length + * @return string + * @throws TypeError + */ + public static function substr($str, $start = 0, $length = null) + { + /* Type checks: */ + if (!is_string($str)) { + throw new TypeError('String expected'); + } + + if ($length === 0) { + return ''; + } + + if (self::isMbStringOverride()) { + if (PHP_VERSION_ID < 50400 && $length === null) { + $length = self::strlen($str); + } + $sub = (string) mb_substr($str, $start, $length, '8bit'); + } elseif ($length === null) { + $sub = (string) substr($str, $start); + } else { + $sub = (string) substr($str, $start, $length); + } + if ($sub !== '') { + return $sub; + } + return ''; + } + + /** + * Compare a 16-character byte string in constant time. + * + * @internal You should not use this directly from another application + * + * @param string $a + * @param string $b + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function verify_16($a, $b) + { + /* Type checks: */ + if (!is_string($a)) { + throw new TypeError('String expected'); + } + if (!is_string($b)) { + throw new TypeError('String expected'); + } + return self::hashEquals( + self::substr($a, 0, 16), + self::substr($b, 0, 16) + ); + } + + /** + * Compare a 32-character byte string in constant time. + * + * @internal You should not use this directly from another application + * + * @param string $a + * @param string $b + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function verify_32($a, $b) + { + /* Type checks: */ + if (!is_string($a)) { + throw new TypeError('String expected'); + } + if (!is_string($b)) { + throw new TypeError('String expected'); + } + return self::hashEquals( + self::substr($a, 0, 32), + self::substr($b, 0, 32) + ); + } + + /** + * Calculate $a ^ $b for two strings. + * + * @internal You should not use this directly from another application + * + * @param string $a + * @param string $b + * @return string + * @throws TypeError + */ + public static function xorStrings($a, $b) + { + /* Type checks: */ + if (!is_string($a)) { + throw new TypeError('Argument 1 must be a string'); + } + if (!is_string($b)) { + throw new TypeError('Argument 2 must be a string'); + } + + return (string) ($a ^ $b); + } + + /** + * Returns whether or not mbstring.func_overload is in effect. + * + * @internal You should not use this directly from another application + * + * Note: MB_OVERLOAD_STRING === 2, but we don't reference the constant + * (for nuisance-free PHP 8 support) + * + * @return bool + */ + protected static function isMbStringOverride() + { + static $mbstring = null; + + if ($mbstring === null) { + if (!defined('MB_OVERLOAD_STRING')) { + $mbstring = false; + return $mbstring; + } + $mbstring = extension_loaded('mbstring') + && defined('MB_OVERLOAD_STRING') + && + ((int) (ini_get('mbstring.func_overload')) & 2); + // MB_OVERLOAD_STRING === 2 + } + /** @var bool $mbstring */ + + return $mbstring; + } +} diff --git a/vendor/paragonie/sodium_compat/src/Core32/BLAKE2b.php b/vendor/paragonie/sodium_compat/src/Core32/BLAKE2b.php index cda1a2c..0fed21a 100644 --- a/vendor/paragonie/sodium_compat/src/Core32/BLAKE2b.php +++ b/vendor/paragonie/sodium_compat/src/Core32/BLAKE2b.php @@ -1,719 +1,719 @@ -<?php
-
-if (class_exists('ParagonIE_Sodium_Core_BLAKE2b', false)) {
- return;
-}
-
-/**
- * Class ParagonIE_Sodium_Core_BLAKE2b
- *
- * Based on the work of Devi Mandiri in devi/salt.
- */
-abstract class ParagonIE_Sodium_Core32_BLAKE2b extends ParagonIE_Sodium_Core_Util
-{
- /**
- * @var SplFixedArray
- */
- public static $iv;
-
- /**
- * @var array<int, array<int, int>>
- */
- public static $sigma = array(
- array( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
- array( 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3),
- array( 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4),
- array( 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8),
- array( 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13),
- array( 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9),
- array( 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11),
- array( 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10),
- array( 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5),
- array( 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0),
- array( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
- array( 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3)
- );
-
- const BLOCKBYTES = 128;
- const OUTBYTES = 64;
- const KEYBYTES = 64;
-
- /**
- * Turn two 32-bit integers into a fixed array representing a 64-bit integer.
- *
- * @internal You should not use this directly from another application
- *
- * @param int $high
- * @param int $low
- * @return ParagonIE_Sodium_Core32_Int64
- * @throws SodiumException
- * @throws TypeError
- */
- public static function new64($high, $low)
- {
- return ParagonIE_Sodium_Core32_Int64::fromInts($low, $high);
- }
-
- /**
- * Convert an arbitrary number into an SplFixedArray of two 32-bit integers
- * that represents a 64-bit integer.
- *
- * @internal You should not use this directly from another application
- *
- * @param int $num
- * @return ParagonIE_Sodium_Core32_Int64
- * @throws SodiumException
- * @throws TypeError
- */
- protected static function to64($num)
- {
- list($hi, $lo) = self::numericTo64BitInteger($num);
- return self::new64($hi, $lo);
- }
-
- /**
- * Adds two 64-bit integers together, returning their sum as a SplFixedArray
- * containing two 32-bit integers (representing a 64-bit integer).
- *
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core32_Int64 $x
- * @param ParagonIE_Sodium_Core32_Int64 $y
- * @return ParagonIE_Sodium_Core32_Int64
- */
- protected static function add64($x, $y)
- {
- return $x->addInt64($y);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core32_Int64 $x
- * @param ParagonIE_Sodium_Core32_Int64 $y
- * @param ParagonIE_Sodium_Core32_Int64 $z
- * @return ParagonIE_Sodium_Core32_Int64
- */
- public static function add364($x, $y, $z)
- {
- return $x->addInt64($y)->addInt64($z);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core32_Int64 $x
- * @param ParagonIE_Sodium_Core32_Int64 $y
- * @return ParagonIE_Sodium_Core32_Int64
- * @throws TypeError
- */
- public static function xor64(ParagonIE_Sodium_Core32_Int64 $x, ParagonIE_Sodium_Core32_Int64 $y)
- {
- return $x->xorInt64($y);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param ParagonIE_Sodium_Core32_Int64 $x
- * @param int $c
- * @return ParagonIE_Sodium_Core32_Int64
- * @throws SodiumException
- * @throws TypeError
- */
- public static function rotr64(ParagonIE_Sodium_Core32_Int64 $x, $c)
- {
- return $x->rotateRight($c);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $x
- * @param int $i
- * @return ParagonIE_Sodium_Core32_Int64
- * @throws SodiumException
- * @throws TypeError
- */
- public static function load64($x, $i)
- {
- /** @var int $l */
- $l = (int) ($x[$i])
- | ((int) ($x[$i+1]) << 8)
- | ((int) ($x[$i+2]) << 16)
- | ((int) ($x[$i+3]) << 24);
- /** @var int $h */
- $h = (int) ($x[$i+4])
- | ((int) ($x[$i+5]) << 8)
- | ((int) ($x[$i+6]) << 16)
- | ((int) ($x[$i+7]) << 24);
- return self::new64($h, $l);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $x
- * @param int $i
- * @param ParagonIE_Sodium_Core32_Int64 $u
- * @return void
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- * @psalm-suppress MixedArrayOffset
- */
- public static function store64(SplFixedArray $x, $i, ParagonIE_Sodium_Core32_Int64 $u)
- {
- $v = clone $u;
- $maxLength = $x->getSize() - 1;
- for ($j = 0; $j < 8; ++$j) {
- $k = 3 - ($j >> 1);
- $x[$i] = $v->limbs[$k] & 0xff;
- if (++$i > $maxLength) {
- return;
- }
- $v->limbs[$k] >>= 8;
- }
- }
-
- /**
- * This just sets the $iv static variable.
- *
- * @internal You should not use this directly from another application
- *
- * @return void
- * @throws SodiumException
- * @throws TypeError
- */
- public static function pseudoConstructor()
- {
- static $called = false;
- if ($called) {
- return;
- }
- self::$iv = new SplFixedArray(8);
- self::$iv[0] = self::new64(0x6a09e667, 0xf3bcc908);
- self::$iv[1] = self::new64(0xbb67ae85, 0x84caa73b);
- self::$iv[2] = self::new64(0x3c6ef372, 0xfe94f82b);
- self::$iv[3] = self::new64(0xa54ff53a, 0x5f1d36f1);
- self::$iv[4] = self::new64(0x510e527f, 0xade682d1);
- self::$iv[5] = self::new64(0x9b05688c, 0x2b3e6c1f);
- self::$iv[6] = self::new64(0x1f83d9ab, 0xfb41bd6b);
- self::$iv[7] = self::new64(0x5be0cd19, 0x137e2179);
-
- $called = true;
- }
-
- /**
- * Returns a fresh BLAKE2 context.
- *
- * @internal You should not use this directly from another application
- *
- * @return SplFixedArray
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- * @psalm-suppress MixedArrayOffset
- * @throws SodiumException
- * @throws TypeError
- */
- protected static function context()
- {
- $ctx = new SplFixedArray(6);
- $ctx[0] = new SplFixedArray(8); // h
- $ctx[1] = new SplFixedArray(2); // t
- $ctx[2] = new SplFixedArray(2); // f
- $ctx[3] = new SplFixedArray(256); // buf
- $ctx[4] = 0; // buflen
- $ctx[5] = 0; // last_node (uint8_t)
-
- for ($i = 8; $i--;) {
- $ctx[0][$i] = self::$iv[$i];
- }
- for ($i = 256; $i--;) {
- $ctx[3][$i] = 0;
- }
-
- $zero = self::new64(0, 0);
- $ctx[1][0] = $zero;
- $ctx[1][1] = $zero;
- $ctx[2][0] = $zero;
- $ctx[2][1] = $zero;
-
- return $ctx;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $ctx
- * @param SplFixedArray $buf
- * @return void
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- * @psalm-suppress MixedAssignment
- */
- protected static function compress(SplFixedArray $ctx, SplFixedArray $buf)
- {
- $m = new SplFixedArray(16);
- $v = new SplFixedArray(16);
-
- for ($i = 16; $i--;) {
- $m[$i] = self::load64($buf, $i << 3);
- }
-
- for ($i = 8; $i--;) {
- $v[$i] = $ctx[0][$i];
- }
-
- $v[ 8] = self::$iv[0];
- $v[ 9] = self::$iv[1];
- $v[10] = self::$iv[2];
- $v[11] = self::$iv[3];
-
- $v[12] = self::xor64($ctx[1][0], self::$iv[4]);
- $v[13] = self::xor64($ctx[1][1], self::$iv[5]);
- $v[14] = self::xor64($ctx[2][0], self::$iv[6]);
- $v[15] = self::xor64($ctx[2][1], self::$iv[7]);
-
- for ($r = 0; $r < 12; ++$r) {
- $v = self::G($r, 0, 0, 4, 8, 12, $v, $m);
- $v = self::G($r, 1, 1, 5, 9, 13, $v, $m);
- $v = self::G($r, 2, 2, 6, 10, 14, $v, $m);
- $v = self::G($r, 3, 3, 7, 11, 15, $v, $m);
- $v = self::G($r, 4, 0, 5, 10, 15, $v, $m);
- $v = self::G($r, 5, 1, 6, 11, 12, $v, $m);
- $v = self::G($r, 6, 2, 7, 8, 13, $v, $m);
- $v = self::G($r, 7, 3, 4, 9, 14, $v, $m);
- }
-
- for ($i = 8; $i--;) {
- $ctx[0][$i] = self::xor64(
- $ctx[0][$i], self::xor64($v[$i], $v[$i+8])
- );
- }
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param int $r
- * @param int $i
- * @param int $a
- * @param int $b
- * @param int $c
- * @param int $d
- * @param SplFixedArray $v
- * @param SplFixedArray $m
- * @return SplFixedArray
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedArrayOffset
- */
- public static function G($r, $i, $a, $b, $c, $d, SplFixedArray $v, SplFixedArray $m)
- {
- $v[$a] = self::add364($v[$a], $v[$b], $m[self::$sigma[$r][$i << 1]]);
- $v[$d] = self::rotr64(self::xor64($v[$d], $v[$a]), 32);
- $v[$c] = self::add64($v[$c], $v[$d]);
- $v[$b] = self::rotr64(self::xor64($v[$b], $v[$c]), 24);
- $v[$a] = self::add364($v[$a], $v[$b], $m[self::$sigma[$r][($i << 1) + 1]]);
- $v[$d] = self::rotr64(self::xor64($v[$d], $v[$a]), 16);
- $v[$c] = self::add64($v[$c], $v[$d]);
- $v[$b] = self::rotr64(self::xor64($v[$b], $v[$c]), 63);
- return $v;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $ctx
- * @param int $inc
- * @return void
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- */
- public static function increment_counter($ctx, $inc)
- {
- if ($inc < 0) {
- throw new SodiumException('Increasing by a negative number makes no sense.');
- }
- $t = self::to64($inc);
- # S->t is $ctx[1] in our implementation
-
- # S->t[0] = ( uint64_t )( t >> 0 );
- $ctx[1][0] = self::add64($ctx[1][0], $t);
-
- # S->t[1] += ( S->t[0] < inc );
- if (!($ctx[1][0] instanceof ParagonIE_Sodium_Core32_Int64)) {
- throw new TypeError('Not an int64');
- }
- /** @var ParagonIE_Sodium_Core32_Int64 $c*/
- $c = $ctx[1][0];
- if ($c->isLessThanInt($inc)) {
- $ctx[1][1] = self::add64($ctx[1][1], self::to64(1));
- }
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $ctx
- * @param SplFixedArray $p
- * @param int $plen
- * @return void
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- * @psalm-suppress MixedArrayOffset
- * @psalm-suppress MixedMethodCall
- * @psalm-suppress MixedOperand
- */
- public static function update(SplFixedArray $ctx, SplFixedArray $p, $plen)
- {
- self::pseudoConstructor();
-
- $offset = 0;
- while ($plen > 0) {
- $left = $ctx[4];
- $fill = 256 - $left;
-
- if ($plen > $fill) {
- # memcpy( S->buf + left, in, fill ); /* Fill buffer */
- for ($i = $fill; $i--;) {
- $ctx[3][$i + $left] = $p[$i + $offset];
- }
-
- # S->buflen += fill;
- $ctx[4] += $fill;
-
- # blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
- self::increment_counter($ctx, 128);
-
- # blake2b_compress( S, S->buf ); /* Compress */
- self::compress($ctx, $ctx[3]);
-
- # memcpy( S->buf, S->buf + BLAKE2B_BLOCKBYTES, BLAKE2B_BLOCKBYTES ); /* Shift buffer left */
- for ($i = 128; $i--;) {
- $ctx[3][$i] = $ctx[3][$i + 128];
- }
-
- # S->buflen -= BLAKE2B_BLOCKBYTES;
- $ctx[4] -= 128;
-
- # in += fill;
- $offset += $fill;
-
- # inlen -= fill;
- $plen -= $fill;
- } else {
- for ($i = $plen; $i--;) {
- $ctx[3][$i + $left] = $p[$i + $offset];
- }
- $ctx[4] += $plen;
- $offset += $plen;
- $plen -= $plen;
- }
- }
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $ctx
- * @param SplFixedArray $out
- * @return SplFixedArray
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- * @psalm-suppress MixedArrayOffset
- * @psalm-suppress MixedMethodCall
- * @psalm-suppress MixedOperand
- */
- public static function finish(SplFixedArray $ctx, SplFixedArray $out)
- {
- self::pseudoConstructor();
- if ($ctx[4] > 128) {
- self::increment_counter($ctx, 128);
- self::compress($ctx, $ctx[3]);
- $ctx[4] -= 128;
- if ($ctx[4] > 128) {
- throw new SodiumException('Failed to assert that buflen <= 128 bytes');
- }
- for ($i = $ctx[4]; $i--;) {
- $ctx[3][$i] = $ctx[3][$i + 128];
- }
- }
-
- self::increment_counter($ctx, $ctx[4]);
- $ctx[2][0] = self::new64(0xffffffff, 0xffffffff);
-
- for ($i = 256 - $ctx[4]; $i--;) {
- /** @var int $i */
- $ctx[3][$i + $ctx[4]] = 0;
- }
-
- self::compress($ctx, $ctx[3]);
-
- $i = (int) (($out->getSize() - 1) / 8);
- for (; $i >= 0; --$i) {
- self::store64($out, $i << 3, $ctx[0][$i]);
- }
- return $out;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray|null $key
- * @param int $outlen
- * @param SplFixedArray|null $salt
- * @param SplFixedArray|null $personal
- * @return SplFixedArray
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedAssignment
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- * @psalm-suppress MixedMethodCall
- */
- public static function init(
- $key = null,
- $outlen = 64,
- $salt = null,
- $personal = null
- ) {
- self::pseudoConstructor();
- $klen = 0;
-
- if ($key !== null) {
- if (count($key) > 64) {
- throw new SodiumException('Invalid key size');
- }
- $klen = count($key);
- }
-
- if ($outlen > 64) {
- throw new SodiumException('Invalid output size');
- }
-
- $ctx = self::context();
-
- $p = new SplFixedArray(64);
- // Zero our param buffer...
- for ($i = 64; --$i;) {
- $p[$i] = 0;
- }
-
- $p[0] = $outlen; // digest_length
- $p[1] = $klen; // key_length
- $p[2] = 1; // fanout
- $p[3] = 1; // depth
-
- if ($salt instanceof SplFixedArray) {
- // salt: [32] through [47]
- for ($i = 0; $i < 16; ++$i) {
- $p[32 + $i] = (int) $salt[$i];
- }
- }
- if ($personal instanceof SplFixedArray) {
- // personal: [48] through [63]
- for ($i = 0; $i < 16; ++$i) {
- $p[48 + $i] = (int) $personal[$i];
- }
- }
-
- $ctx[0][0] = self::xor64(
- $ctx[0][0],
- self::load64($p, 0)
- );
-
- if ($salt instanceof SplFixedArray || $personal instanceof SplFixedArray) {
- // We need to do what blake2b_init_param() does:
- for ($i = 1; $i < 8; ++$i) {
- $ctx[0][$i] = self::xor64(
- $ctx[0][$i],
- self::load64($p, $i << 3)
- );
- }
- }
-
- if ($klen > 0 && $key instanceof SplFixedArray) {
- $block = new SplFixedArray(128);
- for ($i = 128; $i--;) {
- $block[$i] = 0;
- }
- for ($i = $klen; $i--;) {
- $block[$i] = $key[$i];
- }
- self::update($ctx, $block, 128);
- $ctx[4] = 128;
- }
-
- return $ctx;
- }
-
- /**
- * Convert a string into an SplFixedArray of integers
- *
- * @internal You should not use this directly from another application
- *
- * @param string $str
- * @return SplFixedArray
- * @psalm-suppress MixedArgumentTypeCoercion
- */
- public static function stringToSplFixedArray($str = '')
- {
- $values = unpack('C*', $str);
- return SplFixedArray::fromArray(array_values($values));
- }
-
- /**
- * Convert an SplFixedArray of integers into a string
- *
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $a
- * @return string
- */
- public static function SplFixedArrayToString(SplFixedArray $a)
- {
- /**
- * @var array<int, string|int>
- */
- $arr = $a->toArray();
- $c = $a->count();
- array_unshift($arr, str_repeat('C', $c));
- return (string) (call_user_func_array('pack', $arr));
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param SplFixedArray $ctx
- * @return string
- * @throws TypeError
- * @psalm-suppress MixedArgument
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- * @psalm-suppress MixedMethodCall
- */
- public static function contextToString(SplFixedArray $ctx)
- {
- $str = '';
- /** @var array<int, ParagonIE_Sodium_Core32_Int64> $ctxA */
- $ctxA = $ctx[0]->toArray();
-
- # uint64_t h[8];
- for ($i = 0; $i < 8; ++$i) {
- if (!($ctxA[$i] instanceof ParagonIE_Sodium_Core32_Int64)) {
- throw new TypeError('Not an instance of Int64');
- }
- /** @var ParagonIE_Sodium_Core32_Int64 $ctxAi */
- $ctxAi = $ctxA[$i];
- $str .= $ctxAi->toReverseString();
- }
-
- # uint64_t t[2];
- # uint64_t f[2];
- for ($i = 1; $i < 3; ++$i) {
- /** @var array<int, ParagonIE_Sodium_Core32_Int64> $ctxA */
- $ctxA = $ctx[$i]->toArray();
- /** @var ParagonIE_Sodium_Core32_Int64 $ctxA1 */
- $ctxA1 = $ctxA[0];
- /** @var ParagonIE_Sodium_Core32_Int64 $ctxA2 */
- $ctxA2 = $ctxA[1];
-
- $str .= $ctxA1->toReverseString();
- $str .= $ctxA2->toReverseString();
- }
-
- # uint8_t buf[2 * 128];
- $str .= self::SplFixedArrayToString($ctx[3]);
-
- /** @var int $ctx4 */
- $ctx4 = $ctx[4];
-
- # size_t buflen;
- $str .= implode('', array(
- self::intToChr($ctx4 & 0xff),
- self::intToChr(($ctx4 >> 8) & 0xff),
- self::intToChr(($ctx4 >> 16) & 0xff),
- self::intToChr(($ctx4 >> 24) & 0xff),
- "\x00\x00\x00\x00"
- /*
- self::intToChr(($ctx4 >> 32) & 0xff),
- self::intToChr(($ctx4 >> 40) & 0xff),
- self::intToChr(($ctx4 >> 48) & 0xff),
- self::intToChr(($ctx4 >> 56) & 0xff)
- */
- ));
- # uint8_t last_node;
- return $str . self::intToChr($ctx[5]) . str_repeat("\x00", 23);
- }
-
- /**
- * Creates an SplFixedArray containing other SplFixedArray elements, from
- * a string (compatible with \Sodium\crypto_generichash_{init, update, final})
- *
- * @internal You should not use this directly from another application
- *
- * @param string $string
- * @return SplFixedArray
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress MixedArrayAccess
- * @psalm-suppress MixedArrayAssignment
- */
- public static function stringToContext($string)
- {
- $ctx = self::context();
-
- # uint64_t h[8];
- for ($i = 0; $i < 8; ++$i) {
- $ctx[0][$i] = ParagonIE_Sodium_Core32_Int64::fromReverseString(
- self::substr($string, (($i << 3) + 0), 8)
- );
- }
-
- # uint64_t t[2];
- # uint64_t f[2];
- for ($i = 1; $i < 3; ++$i) {
- $ctx[$i][1] = ParagonIE_Sodium_Core32_Int64::fromReverseString(
- self::substr($string, 72 + (($i - 1) << 4), 8)
- );
- $ctx[$i][0] = ParagonIE_Sodium_Core32_Int64::fromReverseString(
- self::substr($string, 64 + (($i - 1) << 4), 8)
- );
- }
-
- # uint8_t buf[2 * 128];
- $ctx[3] = self::stringToSplFixedArray(self::substr($string, 96, 256));
-
- # uint8_t buf[2 * 128];
- $int = 0;
- for ($i = 0; $i < 8; ++$i) {
- $int |= self::chrToInt($string[352 + $i]) << ($i << 3);
- }
- $ctx[4] = $int;
-
- return $ctx;
- }
-}
+<?php + +if (class_exists('ParagonIE_Sodium_Core_BLAKE2b', false)) { + return; +} + +/** + * Class ParagonIE_Sodium_Core_BLAKE2b + * + * Based on the work of Devi Mandiri in devi/salt. + */ +abstract class ParagonIE_Sodium_Core32_BLAKE2b extends ParagonIE_Sodium_Core_Util +{ + /** + * @var SplFixedArray + */ + public static $iv; + + /** + * @var array<int, array<int, int>> + */ + public static $sigma = array( + array( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15), + array( 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3), + array( 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4), + array( 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8), + array( 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13), + array( 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9), + array( 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11), + array( 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10), + array( 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5), + array( 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0), + array( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15), + array( 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3) + ); + + const BLOCKBYTES = 128; + const OUTBYTES = 64; + const KEYBYTES = 64; + + /** + * Turn two 32-bit integers into a fixed array representing a 64-bit integer. + * + * @internal You should not use this directly from another application + * + * @param int $high + * @param int $low + * @return ParagonIE_Sodium_Core32_Int64 + * @throws SodiumException + * @throws TypeError + */ + public static function new64($high, $low) + { + return ParagonIE_Sodium_Core32_Int64::fromInts($low, $high); + } + + /** + * Convert an arbitrary number into an SplFixedArray of two 32-bit integers + * that represents a 64-bit integer. + * + * @internal You should not use this directly from another application + * + * @param int $num + * @return ParagonIE_Sodium_Core32_Int64 + * @throws SodiumException + * @throws TypeError + */ + protected static function to64($num) + { + list($hi, $lo) = self::numericTo64BitInteger($num); + return self::new64($hi, $lo); + } + + /** + * Adds two 64-bit integers together, returning their sum as a SplFixedArray + * containing two 32-bit integers (representing a 64-bit integer). + * + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core32_Int64 $x + * @param ParagonIE_Sodium_Core32_Int64 $y + * @return ParagonIE_Sodium_Core32_Int64 + */ + protected static function add64($x, $y) + { + return $x->addInt64($y); + } + + /** + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core32_Int64 $x + * @param ParagonIE_Sodium_Core32_Int64 $y + * @param ParagonIE_Sodium_Core32_Int64 $z + * @return ParagonIE_Sodium_Core32_Int64 + */ + public static function add364($x, $y, $z) + { + return $x->addInt64($y)->addInt64($z); + } + + /** + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core32_Int64 $x + * @param ParagonIE_Sodium_Core32_Int64 $y + * @return ParagonIE_Sodium_Core32_Int64 + * @throws TypeError + */ + public static function xor64(ParagonIE_Sodium_Core32_Int64 $x, ParagonIE_Sodium_Core32_Int64 $y) + { + return $x->xorInt64($y); + } + + /** + * @internal You should not use this directly from another application + * + * @param ParagonIE_Sodium_Core32_Int64 $x + * @param int $c + * @return ParagonIE_Sodium_Core32_Int64 + * @throws SodiumException + * @throws TypeError + */ + public static function rotr64(ParagonIE_Sodium_Core32_Int64 $x, $c) + { + return $x->rotateRight($c); + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $x + * @param int $i + * @return ParagonIE_Sodium_Core32_Int64 + * @throws SodiumException + * @throws TypeError + */ + public static function load64($x, $i) + { + /** @var int $l */ + $l = (int) ($x[$i]) + | ((int) ($x[$i+1]) << 8) + | ((int) ($x[$i+2]) << 16) + | ((int) ($x[$i+3]) << 24); + /** @var int $h */ + $h = (int) ($x[$i+4]) + | ((int) ($x[$i+5]) << 8) + | ((int) ($x[$i+6]) << 16) + | ((int) ($x[$i+7]) << 24); + return self::new64($h, $l); + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $x + * @param int $i + * @param ParagonIE_Sodium_Core32_Int64 $u + * @return void + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + * @psalm-suppress MixedArrayOffset + */ + public static function store64(SplFixedArray $x, $i, ParagonIE_Sodium_Core32_Int64 $u) + { + $v = clone $u; + $maxLength = $x->getSize() - 1; + for ($j = 0; $j < 8; ++$j) { + $k = 3 - ($j >> 1); + $x[$i] = $v->limbs[$k] & 0xff; + if (++$i > $maxLength) { + return; + } + $v->limbs[$k] >>= 8; + } + } + + /** + * This just sets the $iv static variable. + * + * @internal You should not use this directly from another application + * + * @return void + * @throws SodiumException + * @throws TypeError + */ + public static function pseudoConstructor() + { + static $called = false; + if ($called) { + return; + } + self::$iv = new SplFixedArray(8); + self::$iv[0] = self::new64(0x6a09e667, 0xf3bcc908); + self::$iv[1] = self::new64(0xbb67ae85, 0x84caa73b); + self::$iv[2] = self::new64(0x3c6ef372, 0xfe94f82b); + self::$iv[3] = self::new64(0xa54ff53a, 0x5f1d36f1); + self::$iv[4] = self::new64(0x510e527f, 0xade682d1); + self::$iv[5] = self::new64(0x9b05688c, 0x2b3e6c1f); + self::$iv[6] = self::new64(0x1f83d9ab, 0xfb41bd6b); + self::$iv[7] = self::new64(0x5be0cd19, 0x137e2179); + + $called = true; + } + + /** + * Returns a fresh BLAKE2 context. + * + * @internal You should not use this directly from another application + * + * @return SplFixedArray + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + * @psalm-suppress MixedArrayOffset + * @throws SodiumException + * @throws TypeError + */ + protected static function context() + { + $ctx = new SplFixedArray(6); + $ctx[0] = new SplFixedArray(8); // h + $ctx[1] = new SplFixedArray(2); // t + $ctx[2] = new SplFixedArray(2); // f + $ctx[3] = new SplFixedArray(256); // buf + $ctx[4] = 0; // buflen + $ctx[5] = 0; // last_node (uint8_t) + + for ($i = 8; $i--;) { + $ctx[0][$i] = self::$iv[$i]; + } + for ($i = 256; $i--;) { + $ctx[3][$i] = 0; + } + + $zero = self::new64(0, 0); + $ctx[1][0] = $zero; + $ctx[1][1] = $zero; + $ctx[2][0] = $zero; + $ctx[2][1] = $zero; + + return $ctx; + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $ctx + * @param SplFixedArray $buf + * @return void + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + * @psalm-suppress MixedAssignment + */ + protected static function compress(SplFixedArray $ctx, SplFixedArray $buf) + { + $m = new SplFixedArray(16); + $v = new SplFixedArray(16); + + for ($i = 16; $i--;) { + $m[$i] = self::load64($buf, $i << 3); + } + + for ($i = 8; $i--;) { + $v[$i] = $ctx[0][$i]; + } + + $v[ 8] = self::$iv[0]; + $v[ 9] = self::$iv[1]; + $v[10] = self::$iv[2]; + $v[11] = self::$iv[3]; + + $v[12] = self::xor64($ctx[1][0], self::$iv[4]); + $v[13] = self::xor64($ctx[1][1], self::$iv[5]); + $v[14] = self::xor64($ctx[2][0], self::$iv[6]); + $v[15] = self::xor64($ctx[2][1], self::$iv[7]); + + for ($r = 0; $r < 12; ++$r) { + $v = self::G($r, 0, 0, 4, 8, 12, $v, $m); + $v = self::G($r, 1, 1, 5, 9, 13, $v, $m); + $v = self::G($r, 2, 2, 6, 10, 14, $v, $m); + $v = self::G($r, 3, 3, 7, 11, 15, $v, $m); + $v = self::G($r, 4, 0, 5, 10, 15, $v, $m); + $v = self::G($r, 5, 1, 6, 11, 12, $v, $m); + $v = self::G($r, 6, 2, 7, 8, 13, $v, $m); + $v = self::G($r, 7, 3, 4, 9, 14, $v, $m); + } + + for ($i = 8; $i--;) { + $ctx[0][$i] = self::xor64( + $ctx[0][$i], self::xor64($v[$i], $v[$i+8]) + ); + } + } + + /** + * @internal You should not use this directly from another application + * + * @param int $r + * @param int $i + * @param int $a + * @param int $b + * @param int $c + * @param int $d + * @param SplFixedArray $v + * @param SplFixedArray $m + * @return SplFixedArray + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedArrayOffset + */ + public static function G($r, $i, $a, $b, $c, $d, SplFixedArray $v, SplFixedArray $m) + { + $v[$a] = self::add364($v[$a], $v[$b], $m[self::$sigma[$r][$i << 1]]); + $v[$d] = self::rotr64(self::xor64($v[$d], $v[$a]), 32); + $v[$c] = self::add64($v[$c], $v[$d]); + $v[$b] = self::rotr64(self::xor64($v[$b], $v[$c]), 24); + $v[$a] = self::add364($v[$a], $v[$b], $m[self::$sigma[$r][($i << 1) + 1]]); + $v[$d] = self::rotr64(self::xor64($v[$d], $v[$a]), 16); + $v[$c] = self::add64($v[$c], $v[$d]); + $v[$b] = self::rotr64(self::xor64($v[$b], $v[$c]), 63); + return $v; + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $ctx + * @param int $inc + * @return void + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + */ + public static function increment_counter($ctx, $inc) + { + if ($inc < 0) { + throw new SodiumException('Increasing by a negative number makes no sense.'); + } + $t = self::to64($inc); + # S->t is $ctx[1] in our implementation + + # S->t[0] = ( uint64_t )( t >> 0 ); + $ctx[1][0] = self::add64($ctx[1][0], $t); + + # S->t[1] += ( S->t[0] < inc ); + if (!($ctx[1][0] instanceof ParagonIE_Sodium_Core32_Int64)) { + throw new TypeError('Not an int64'); + } + /** @var ParagonIE_Sodium_Core32_Int64 $c*/ + $c = $ctx[1][0]; + if ($c->isLessThanInt($inc)) { + $ctx[1][1] = self::add64($ctx[1][1], self::to64(1)); + } + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $ctx + * @param SplFixedArray $p + * @param int $plen + * @return void + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + * @psalm-suppress MixedArrayOffset + * @psalm-suppress MixedMethodCall + * @psalm-suppress MixedOperand + */ + public static function update(SplFixedArray $ctx, SplFixedArray $p, $plen) + { + self::pseudoConstructor(); + + $offset = 0; + while ($plen > 0) { + $left = $ctx[4]; + $fill = 256 - $left; + + if ($plen > $fill) { + # memcpy( S->buf + left, in, fill ); /* Fill buffer */ + for ($i = $fill; $i--;) { + $ctx[3][$i + $left] = $p[$i + $offset]; + } + + # S->buflen += fill; + $ctx[4] += $fill; + + # blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES ); + self::increment_counter($ctx, 128); + + # blake2b_compress( S, S->buf ); /* Compress */ + self::compress($ctx, $ctx[3]); + + # memcpy( S->buf, S->buf + BLAKE2B_BLOCKBYTES, BLAKE2B_BLOCKBYTES ); /* Shift buffer left */ + for ($i = 128; $i--;) { + $ctx[3][$i] = $ctx[3][$i + 128]; + } + + # S->buflen -= BLAKE2B_BLOCKBYTES; + $ctx[4] -= 128; + + # in += fill; + $offset += $fill; + + # inlen -= fill; + $plen -= $fill; + } else { + for ($i = $plen; $i--;) { + $ctx[3][$i + $left] = $p[$i + $offset]; + } + $ctx[4] += $plen; + $offset += $plen; + $plen -= $plen; + } + } + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $ctx + * @param SplFixedArray $out + * @return SplFixedArray + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + * @psalm-suppress MixedArrayOffset + * @psalm-suppress MixedMethodCall + * @psalm-suppress MixedOperand + */ + public static function finish(SplFixedArray $ctx, SplFixedArray $out) + { + self::pseudoConstructor(); + if ($ctx[4] > 128) { + self::increment_counter($ctx, 128); + self::compress($ctx, $ctx[3]); + $ctx[4] -= 128; + if ($ctx[4] > 128) { + throw new SodiumException('Failed to assert that buflen <= 128 bytes'); + } + for ($i = $ctx[4]; $i--;) { + $ctx[3][$i] = $ctx[3][$i + 128]; + } + } + + self::increment_counter($ctx, $ctx[4]); + $ctx[2][0] = self::new64(0xffffffff, 0xffffffff); + + for ($i = 256 - $ctx[4]; $i--;) { + /** @var int $i */ + $ctx[3][$i + $ctx[4]] = 0; + } + + self::compress($ctx, $ctx[3]); + + $i = (int) (($out->getSize() - 1) / 8); + for (; $i >= 0; --$i) { + self::store64($out, $i << 3, $ctx[0][$i]); + } + return $out; + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray|null $key + * @param int $outlen + * @param SplFixedArray|null $salt + * @param SplFixedArray|null $personal + * @return SplFixedArray + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedAssignment + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + * @psalm-suppress MixedMethodCall + */ + public static function init( + $key = null, + $outlen = 64, + $salt = null, + $personal = null + ) { + self::pseudoConstructor(); + $klen = 0; + + if ($key !== null) { + if (count($key) > 64) { + throw new SodiumException('Invalid key size'); + } + $klen = count($key); + } + + if ($outlen > 64) { + throw new SodiumException('Invalid output size'); + } + + $ctx = self::context(); + + $p = new SplFixedArray(64); + // Zero our param buffer... + for ($i = 64; --$i;) { + $p[$i] = 0; + } + + $p[0] = $outlen; // digest_length + $p[1] = $klen; // key_length + $p[2] = 1; // fanout + $p[3] = 1; // depth + + if ($salt instanceof SplFixedArray) { + // salt: [32] through [47] + for ($i = 0; $i < 16; ++$i) { + $p[32 + $i] = (int) $salt[$i]; + } + } + if ($personal instanceof SplFixedArray) { + // personal: [48] through [63] + for ($i = 0; $i < 16; ++$i) { + $p[48 + $i] = (int) $personal[$i]; + } + } + + $ctx[0][0] = self::xor64( + $ctx[0][0], + self::load64($p, 0) + ); + + if ($salt instanceof SplFixedArray || $personal instanceof SplFixedArray) { + // We need to do what blake2b_init_param() does: + for ($i = 1; $i < 8; ++$i) { + $ctx[0][$i] = self::xor64( + $ctx[0][$i], + self::load64($p, $i << 3) + ); + } + } + + if ($klen > 0 && $key instanceof SplFixedArray) { + $block = new SplFixedArray(128); + for ($i = 128; $i--;) { + $block[$i] = 0; + } + for ($i = $klen; $i--;) { + $block[$i] = $key[$i]; + } + self::update($ctx, $block, 128); + $ctx[4] = 128; + } + + return $ctx; + } + + /** + * Convert a string into an SplFixedArray of integers + * + * @internal You should not use this directly from another application + * + * @param string $str + * @return SplFixedArray + * @psalm-suppress MixedArgumentTypeCoercion + */ + public static function stringToSplFixedArray($str = '') + { + $values = unpack('C*', $str); + return SplFixedArray::fromArray(array_values($values)); + } + + /** + * Convert an SplFixedArray of integers into a string + * + * @internal You should not use this directly from another application + * + * @param SplFixedArray $a + * @return string + */ + public static function SplFixedArrayToString(SplFixedArray $a) + { + /** + * @var array<int, string|int> + */ + $arr = $a->toArray(); + $c = $a->count(); + array_unshift($arr, str_repeat('C', $c)); + return (string) (call_user_func_array('pack', $arr)); + } + + /** + * @internal You should not use this directly from another application + * + * @param SplFixedArray $ctx + * @return string + * @throws TypeError + * @psalm-suppress MixedArgument + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + * @psalm-suppress MixedMethodCall + */ + public static function contextToString(SplFixedArray $ctx) + { + $str = ''; + /** @var array<int, ParagonIE_Sodium_Core32_Int64> $ctxA */ + $ctxA = $ctx[0]->toArray(); + + # uint64_t h[8]; + for ($i = 0; $i < 8; ++$i) { + if (!($ctxA[$i] instanceof ParagonIE_Sodium_Core32_Int64)) { + throw new TypeError('Not an instance of Int64'); + } + /** @var ParagonIE_Sodium_Core32_Int64 $ctxAi */ + $ctxAi = $ctxA[$i]; + $str .= $ctxAi->toReverseString(); + } + + # uint64_t t[2]; + # uint64_t f[2]; + for ($i = 1; $i < 3; ++$i) { + /** @var array<int, ParagonIE_Sodium_Core32_Int64> $ctxA */ + $ctxA = $ctx[$i]->toArray(); + /** @var ParagonIE_Sodium_Core32_Int64 $ctxA1 */ + $ctxA1 = $ctxA[0]; + /** @var ParagonIE_Sodium_Core32_Int64 $ctxA2 */ + $ctxA2 = $ctxA[1]; + + $str .= $ctxA1->toReverseString(); + $str .= $ctxA2->toReverseString(); + } + + # uint8_t buf[2 * 128]; + $str .= self::SplFixedArrayToString($ctx[3]); + + /** @var int $ctx4 */ + $ctx4 = $ctx[4]; + + # size_t buflen; + $str .= implode('', array( + self::intToChr($ctx4 & 0xff), + self::intToChr(($ctx4 >> 8) & 0xff), + self::intToChr(($ctx4 >> 16) & 0xff), + self::intToChr(($ctx4 >> 24) & 0xff), + "\x00\x00\x00\x00" + /* + self::intToChr(($ctx4 >> 32) & 0xff), + self::intToChr(($ctx4 >> 40) & 0xff), + self::intToChr(($ctx4 >> 48) & 0xff), + self::intToChr(($ctx4 >> 56) & 0xff) + */ + )); + # uint8_t last_node; + return $str . self::intToChr($ctx[5]) . str_repeat("\x00", 23); + } + + /** + * Creates an SplFixedArray containing other SplFixedArray elements, from + * a string (compatible with \Sodium\crypto_generichash_{init, update, final}) + * + * @internal You should not use this directly from another application + * + * @param string $string + * @return SplFixedArray + * @throws SodiumException + * @throws TypeError + * @psalm-suppress MixedArrayAccess + * @psalm-suppress MixedArrayAssignment + */ + public static function stringToContext($string) + { + $ctx = self::context(); + + # uint64_t h[8]; + for ($i = 0; $i < 8; ++$i) { + $ctx[0][$i] = ParagonIE_Sodium_Core32_Int64::fromReverseString( + self::substr($string, (($i << 3) + 0), 8) + ); + } + + # uint64_t t[2]; + # uint64_t f[2]; + for ($i = 1; $i < 3; ++$i) { + $ctx[$i][1] = ParagonIE_Sodium_Core32_Int64::fromReverseString( + self::substr($string, 72 + (($i - 1) << 4), 8) + ); + $ctx[$i][0] = ParagonIE_Sodium_Core32_Int64::fromReverseString( + self::substr($string, 64 + (($i - 1) << 4), 8) + ); + } + + # uint8_t buf[2 * 128]; + $ctx[3] = self::stringToSplFixedArray(self::substr($string, 96, 256)); + + # uint8_t buf[2 * 128]; + $int = 0; + for ($i = 0; $i < 8; ++$i) { + $int |= self::chrToInt($string[352 + $i]) << ($i << 3); + } + $ctx[4] = $int; + + return $ctx; + } +} diff --git a/vendor/paragonie/sodium_compat/src/Core32/ChaCha20/Ctx.php b/vendor/paragonie/sodium_compat/src/Core32/ChaCha20/Ctx.php index 3f47d03..37b058f 100644 --- a/vendor/paragonie/sodium_compat/src/Core32/ChaCha20/Ctx.php +++ b/vendor/paragonie/sodium_compat/src/Core32/ChaCha20/Ctx.php @@ -70,6 +70,7 @@ class ParagonIE_Sodium_Core32_ChaCha20_Ctx extends ParagonIE_Sodium_Core32_Util * @param int|ParagonIE_Sodium_Core32_Int32 $value * @return void */ + #[ReturnTypeWillChange] public function offsetSet($offset, $value) { if (!is_int($offset)) { @@ -93,6 +94,7 @@ class ParagonIE_Sodium_Core32_ChaCha20_Ctx extends ParagonIE_Sodium_Core32_Util * @return bool * @psalm-suppress MixedArrayOffset */ + #[ReturnTypeWillChange] public function offsetExists($offset) { return isset($this->container[$offset]); @@ -105,6 +107,7 @@ class ParagonIE_Sodium_Core32_ChaCha20_Ctx extends ParagonIE_Sodium_Core32_Util * @return void * @psalm-suppress MixedArrayOffset */ + #[ReturnTypeWillChange] public function offsetUnset($offset) { unset($this->container[$offset]); @@ -117,6 +120,7 @@ class ParagonIE_Sodium_Core32_ChaCha20_Ctx extends ParagonIE_Sodium_Core32_Util * @return mixed|null * @psalm-suppress MixedArrayOffset */ + #[ReturnTypeWillChange] public function offsetGet($offset) { return isset($this->container[$offset]) diff --git a/vendor/paragonie/sodium_compat/src/Core32/Curve25519.php b/vendor/paragonie/sodium_compat/src/Core32/Curve25519.php index d6d700e..aafffcd 100644 --- a/vendor/paragonie/sodium_compat/src/Core32/Curve25519.php +++ b/vendor/paragonie/sodium_compat/src/Core32/Curve25519.php @@ -325,25 +325,15 @@ abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core3 $carry9 = $f[9]->shiftRight(25); $f[9] = $f[9]->subInt64($carry9->shiftLeft(25)); - /** @var int $h0 */ $h0 = $f[0]->toInt32()->toInt(); - /** @var int $h1 */ $h1 = $f[1]->toInt32()->toInt(); - /** @var int $h2 */ $h2 = $f[2]->toInt32()->toInt(); - /** @var int $h3 */ $h3 = $f[3]->toInt32()->toInt(); - /** @var int $h4 */ $h4 = $f[4]->toInt32()->toInt(); - /** @var int $h5 */ $h5 = $f[5]->toInt32()->toInt(); - /** @var int $h6 */ $h6 = $f[6]->toInt32()->toInt(); - /** @var int $h7 */ $h7 = $f[7]->toInt32()->toInt(); - /** @var int $h8 */ $h8 = $f[8]->toInt32()->toInt(); - /** @var int $h9 */ $h9 = $f[9]->toInt32()->toInt(); /** @@ -418,7 +408,6 @@ abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core3 if ($zero === null) { $zero = str_repeat("\x00", 32); } - /** @var string $str */ $str = self::fe_tobytes($f); /** @var string $zero */ return !self::verify_32($str, $zero); @@ -497,15 +486,10 @@ abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core3 $g7_19 = $g7->mulInt(19, 5); $g8_19 = $g8->mulInt(19, 5); $g9_19 = $g9->mulInt(19, 5); - /** @var ParagonIE_Sodium_Core32_Int64 $f1_2 */ $f1_2 = $f1->shiftLeft(1); - /** @var ParagonIE_Sodium_Core32_Int64 $f3_2 */ $f3_2 = $f3->shiftLeft(1); - /** @var ParagonIE_Sodium_Core32_Int64 $f5_2 */ $f5_2 = $f5->shiftLeft(1); - /** @var ParagonIE_Sodium_Core32_Int64 $f7_2 */ $f7_2 = $f7->shiftLeft(1); - /** @var ParagonIE_Sodium_Core32_Int64 $f9_2 */ $f9_2 = $f9->shiftLeft(1); $f0g0 = $f0->mulInt64($g0, 27); $f0g1 = $f0->mulInt64($g1, 27); @@ -775,28 +759,17 @@ abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core3 */ public static function fe_sq(ParagonIE_Sodium_Core32_Curve25519_Fe $f) { - /** @var ParagonIE_Sodium_Core32_Int64 $f0 */ $f0 = $f[0]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f1 */ $f1 = $f[1]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f2 */ $f2 = $f[2]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f3 */ $f3 = $f[3]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f4 */ $f4 = $f[4]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f5 */ $f5 = $f[5]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f6 */ $f6 = $f[6]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f7 */ $f7 = $f[7]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f8 */ $f8 = $f[8]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f9 */ $f9 = $f[9]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f0_2 */ $f0_2 = $f0->shiftLeft(1); $f1_2 = $f1->shiftLeft(1); $f2_2 = $f2->shiftLeft(1); @@ -810,7 +783,7 @@ abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core3 $f7_38 = $f7->mulInt(38, 6); $f8_19 = $f8->mulInt(19, 5); $f9_38 = $f9->mulInt(38, 6); - /** @var ParagonIE_Sodium_Core32_Int64 $f0f0*/ + $f0f0 = $f0->mulInt64($f0, 28); $f0f1_2 = $f0_2->mulInt64($f1, 28); $f0f2_2 = $f0_2->mulInt64($f2, 28); @@ -979,25 +952,15 @@ abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core3 */ public static function fe_sq2(ParagonIE_Sodium_Core32_Curve25519_Fe $f) { - /** @var ParagonIE_Sodium_Core32_Int64 $f0 */ $f0 = $f[0]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f1 */ $f1 = $f[1]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f2 */ $f2 = $f[2]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f3 */ $f3 = $f[3]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f4 */ $f4 = $f[4]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f5 */ $f5 = $f[5]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f6 */ $f6 = $f[6]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f7 */ $f7 = $f[7]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f8 */ $f8 = $f[8]->toInt64(); - /** @var ParagonIE_Sodium_Core32_Int64 $f9 */ $f9 = $f[9]->toInt64(); $f0_2 = $f0->shiftLeft(1); @@ -1479,7 +1442,6 @@ abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core3 { static $d = null; if (!$d) { - /** @var ParagonIE_Sodium_Core32_Curve25519_Fe $d */ $d = ParagonIE_Sodium_Core32_Curve25519_Fe::fromArray( array( ParagonIE_Sodium_Core32_Int32::fromInt(self::$d[0]), @@ -1495,6 +1457,7 @@ abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core3 ) ); } + /** @var ParagonIE_Sodium_Core32_Curve25519_Fe $d */ # fe_frombytes(h->Y,s); # fe_1(h->Z); @@ -1833,7 +1796,14 @@ abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core3 */ public static function equal($b, $c) { - return (int) ((($b ^ $c) - 1 & 0xffffffff) >> 31); + $b0 = $b & 0xffff; + $b1 = ($b >> 16) & 0xffff; + $c0 = $c & 0xffff; + $c1 = ($c >> 16) & 0xffff; + + $d0 = (($b0 ^ $c0) - 1) >> 31; + $d1 = (($b1 ^ $c1) - 1) >> 31; + return ($d0 & $d1) & 1; } /** @@ -1850,7 +1820,6 @@ abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core3 return $char < 0 ? 1 : 0; } /** @var string $char */ - /** @var int $x */ $x = self::chrToInt(self::substr($char, 0, 1)); return (int) ($x >> 31); } @@ -1956,7 +1925,6 @@ abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core3 } $bnegative = self::negative($b); - /** @var int $babs */ $babs = $b - (((-$bnegative) & $b) << 1); $t = self::ge_precomp_0(); @@ -1964,7 +1932,7 @@ abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core3 $t = self::cmov( $t, $base[$pos][$i], - self::equal($babs, $i + 1) + -self::equal($babs, $i + 1) ); } $minusT = new ParagonIE_Sodium_Core32_Curve25519_Ge_Precomp( @@ -2230,9 +2198,7 @@ abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core3 $carry = 0; for ($i = 0; $i < 63; ++$i) { $e[$i] += $carry; - /** @var int $carry */ $carry = $e[$i] + 8; - /** @var int $carry */ $carry >>= 4; $e[$i] -= $carry << 4; } @@ -3140,7 +3106,6 @@ abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core3 */ public static function ge_mul_l(ParagonIE_Sodium_Core32_Curve25519_Ge_P3 $A) { - /** @var array<int, int> $aslide */ $aslide = array( 13, 0, 0, 0, 0, -1, 0, 0, 0, 0, -11, 0, 0, 0, 0, 0, 0, -5, 0, 0, 0, 0, 0, 0, -3, 0, 0, 0, 0, -13, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 3, 0, diff --git a/vendor/paragonie/sodium_compat/src/Core32/Curve25519/Fe.php b/vendor/paragonie/sodium_compat/src/Core32/Curve25519/Fe.php index 5fe10f7..21b3188 100644 --- a/vendor/paragonie/sodium_compat/src/Core32/Curve25519/Fe.php +++ b/vendor/paragonie/sodium_compat/src/Core32/Curve25519/Fe.php @@ -48,6 +48,9 @@ class ParagonIE_Sodium_Core32_Curve25519_Fe implements ArrayAccess } } else { for ($i = 0; $i < $count; ++$i) { + if (!($array[$i] instanceof ParagonIE_Sodium_Core32_Int32)) { + throw new TypeError('Expected ParagonIE_Sodium_Core32_Int32'); + } $array[$i]->overflow = 0; $obj->offsetSet($i, $array[$i]); } @@ -104,6 +107,7 @@ class ParagonIE_Sodium_Core32_Curve25519_Fe implements ArrayAccess * @throws SodiumException * @throws TypeError */ + #[ReturnTypeWillChange] public function offsetSet($offset, $value) { if (!($value instanceof ParagonIE_Sodium_Core32_Int32)) { @@ -124,6 +128,7 @@ class ParagonIE_Sodium_Core32_Curve25519_Fe implements ArrayAccess * @return bool * @psalm-suppress MixedArrayOffset */ + #[ReturnTypeWillChange] public function offsetExists($offset) { return isset($this->container[$offset]); @@ -136,6 +141,7 @@ class ParagonIE_Sodium_Core32_Curve25519_Fe implements ArrayAccess * @return void * @psalm-suppress MixedArrayOffset */ + #[ReturnTypeWillChange] public function offsetUnset($offset) { unset($this->container[$offset]); @@ -148,6 +154,7 @@ class ParagonIE_Sodium_Core32_Curve25519_Fe implements ArrayAccess * @return ParagonIE_Sodium_Core32_Int32 * @psalm-suppress MixedArrayOffset */ + #[ReturnTypeWillChange] public function offsetGet($offset) { if (!isset($this->container[$offset])) { diff --git a/vendor/paragonie/sodium_compat/src/Core32/Ed25519.php b/vendor/paragonie/sodium_compat/src/Core32/Ed25519.php index 284ff14..1b86b67 100644 --- a/vendor/paragonie/sodium_compat/src/Core32/Ed25519.php +++ b/vendor/paragonie/sodium_compat/src/Core32/Ed25519.php @@ -1,482 +1,485 @@ -<?php
-
-if (class_exists('ParagonIE_Sodium_Core32_Ed25519', false)) {
- return;
-}
-
-/**
- * Class ParagonIE_Sodium_Core32_Ed25519
- */
-abstract class ParagonIE_Sodium_Core32_Ed25519 extends ParagonIE_Sodium_Core32_Curve25519
-{
- const KEYPAIR_BYTES = 96;
- const SEED_BYTES = 32;
-
- /**
- * @internal You should not use this directly from another application
- *
- * @return string (96 bytes)
- * @throws Exception
- * @throws SodiumException
- * @throws TypeError
- */
- public static function keypair()
- {
- $seed = random_bytes(self::SEED_BYTES);
- $pk = '';
- $sk = '';
- self::seed_keypair($pk, $sk, $seed);
- return $sk . $pk;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $pk
- * @param string $sk
- * @param string $seed
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function seed_keypair(&$pk, &$sk, $seed)
- {
- if (self::strlen($seed) !== self::SEED_BYTES) {
- throw new RangeException('crypto_sign keypair seed must be 32 bytes long');
- }
-
- /** @var string $pk */
- $pk = self::publickey_from_secretkey($seed);
- $sk = $seed . $pk;
- return $sk;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $keypair
- * @return string
- * @throws TypeError
- */
- public static function secretkey($keypair)
- {
- if (self::strlen($keypair) !== self::KEYPAIR_BYTES) {
- throw new RangeException('crypto_sign keypair must be 96 bytes long');
- }
- return self::substr($keypair, 0, 64);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $keypair
- * @return string
- * @throws RangeException
- * @throws TypeError
- */
- public static function publickey($keypair)
- {
- if (self::strlen($keypair) !== self::KEYPAIR_BYTES) {
- throw new RangeException('crypto_sign keypair must be 96 bytes long');
- }
- return self::substr($keypair, 64, 32);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $sk
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function publickey_from_secretkey($sk)
- {
- /** @var string $sk */
- $sk = hash('sha512', self::substr($sk, 0, 32), true);
- $sk[0] = self::intToChr(
- self::chrToInt($sk[0]) & 248
- );
- $sk[31] = self::intToChr(
- (self::chrToInt($sk[31]) & 63) | 64
- );
- return self::sk_to_pk($sk);
- }
-
- /**
- * @param string $pk
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function pk_to_curve25519($pk)
- {
- if (self::small_order($pk)) {
- throw new SodiumException('Public key is on a small order');
- }
- $A = self::ge_frombytes_negate_vartime($pk);
- $p1 = self::ge_mul_l($A);
- if (!self::fe_isnonzero($p1->X)) {
- throw new SodiumException('Unexpected zero result');
- }
-
- # fe_1(one_minus_y);
- # fe_sub(one_minus_y, one_minus_y, A.Y);
- # fe_invert(one_minus_y, one_minus_y);
- $one_minux_y = self::fe_invert(
- self::fe_sub(
- self::fe_1(),
- $A->Y
- )
- );
-
-
- # fe_1(x);
- # fe_add(x, x, A.Y);
- # fe_mul(x, x, one_minus_y);
- $x = self::fe_mul(
- self::fe_add(self::fe_1(), $A->Y),
- $one_minux_y
- );
-
- # fe_tobytes(curve25519_pk, x);
- return self::fe_tobytes($x);
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $sk
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function sk_to_pk($sk)
- {
- return self::ge_p3_tobytes(
- self::ge_scalarmult_base(
- self::substr($sk, 0, 32)
- )
- );
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $message
- * @param string $sk
- * @return string
- * @throws SodiumException
- * @throws TypeError
- */
- public static function sign($message, $sk)
- {
- /** @var string $signature */
- $signature = self::sign_detached($message, $sk);
- return $signature . $message;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $message A signed message
- * @param string $pk Public key
- * @return string Message (without signature)
- * @throws SodiumException
- * @throws TypeError
- */
- public static function sign_open($message, $pk)
- {
- /** @var string $signature */
- $signature = self::substr($message, 0, 64);
-
- /** @var string $message */
- $message = self::substr($message, 64);
-
- if (self::verify_detached($signature, $message, $pk)) {
- return $message;
- }
- throw new SodiumException('Invalid signature');
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $message
- * @param string $sk
- * @return string
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress PossiblyInvalidArgument
- */
- public static function sign_detached($message, $sk)
- {
- # crypto_hash_sha512(az, sk, 32);
- $az = hash('sha512', self::substr($sk, 0, 32), true);
-
- # az[0] &= 248;
- # az[31] &= 63;
- # az[31] |= 64;
- $az[0] = self::intToChr(self::chrToInt($az[0]) & 248);
- $az[31] = self::intToChr((self::chrToInt($az[31]) & 63) | 64);
-
- # crypto_hash_sha512_init(&hs);
- # crypto_hash_sha512_update(&hs, az + 32, 32);
- # crypto_hash_sha512_update(&hs, m, mlen);
- # crypto_hash_sha512_final(&hs, nonce);
- $hs = hash_init('sha512');
- self::hash_update($hs, self::substr($az, 32, 32));
- self::hash_update($hs, $message);
- $nonceHash = hash_final($hs, true);
-
- # memmove(sig + 32, sk + 32, 32);
- $pk = self::substr($sk, 32, 32);
-
- # sc_reduce(nonce);
- # ge_scalarmult_base(&R, nonce);
- # ge_p3_tobytes(sig, &R);
- $nonce = self::sc_reduce($nonceHash) . self::substr($nonceHash, 32);
- $sig = self::ge_p3_tobytes(
- self::ge_scalarmult_base($nonce)
- );
-
- # crypto_hash_sha512_init(&hs);
- # crypto_hash_sha512_update(&hs, sig, 64);
- # crypto_hash_sha512_update(&hs, m, mlen);
- # crypto_hash_sha512_final(&hs, hram);
- $hs = hash_init('sha512');
- self::hash_update($hs, self::substr($sig, 0, 32));
- self::hash_update($hs, self::substr($pk, 0, 32));
- self::hash_update($hs, $message);
- $hramHash = hash_final($hs, true);
-
- # sc_reduce(hram);
- # sc_muladd(sig + 32, hram, az, nonce);
- $hram = self::sc_reduce($hramHash);
- $sigAfter = self::sc_muladd($hram, $az, $nonce);
- $sig = self::substr($sig, 0, 32) . self::substr($sigAfter, 0, 32);
-
- try {
- ParagonIE_Sodium_Compat::memzero($az);
- } catch (SodiumException $ex) {
- $az = null;
- }
- return $sig;
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $sig
- * @param string $message
- * @param string $pk
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function verify_detached($sig, $message, $pk)
- {
- if (self::strlen($sig) < 64) {
- throw new SodiumException('Signature is too short');
- }
- if ((self::chrToInt($sig[63]) & 240) && self::check_S_lt_L(self::substr($sig, 32, 32))) {
- throw new SodiumException('S < L - Invalid signature');
- }
- if (self::small_order($sig)) {
- throw new SodiumException('Signature is on too small of an order');
- }
- if ((self::chrToInt($sig[63]) & 224) !== 0) {
- throw new SodiumException('Invalid signature');
- }
- $d = 0;
- for ($i = 0; $i < 32; ++$i) {
- $d |= self::chrToInt($pk[$i]);
- }
- if ($d === 0) {
- throw new SodiumException('All zero public key');
- }
-
- /** @var bool The original value of ParagonIE_Sodium_Compat::$fastMult */
- $orig = ParagonIE_Sodium_Compat::$fastMult;
-
- // Set ParagonIE_Sodium_Compat::$fastMult to true to speed up verification.
- ParagonIE_Sodium_Compat::$fastMult = true;
-
- /** @var ParagonIE_Sodium_Core32_Curve25519_Ge_P3 $A */
- $A = self::ge_frombytes_negate_vartime($pk);
-
- /** @var string $hDigest */
- $hDigest = hash(
- 'sha512',
- self::substr($sig, 0, 32) .
- self::substr($pk, 0, 32) .
- $message,
- true
- );
-
- /** @var string $h */
- $h = self::sc_reduce($hDigest) . self::substr($hDigest, 32);
-
- /** @var ParagonIE_Sodium_Core32_Curve25519_Ge_P2 $R */
- $R = self::ge_double_scalarmult_vartime(
- $h,
- $A,
- self::substr($sig, 32)
- );
-
- /** @var string $rcheck */
- $rcheck = self::ge_tobytes($R);
-
- // Reset ParagonIE_Sodium_Compat::$fastMult to what it was before.
- ParagonIE_Sodium_Compat::$fastMult = $orig;
-
- return self::verify_32($rcheck, self::substr($sig, 0, 32));
- }
-
- /**
- * @internal You should not use this directly from another application
- *
- * @param string $S
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function check_S_lt_L($S)
- {
- if (self::strlen($S) < 32) {
- throw new SodiumException('Signature must be 32 bytes');
- }
- static $L = array(
- 0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
- 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10
- );
- /** @var array<int, int> $L */
- $c = 0;
- $n = 1;
- $i = 32;
-
- do {
- --$i;
- $x = self::chrToInt($S[$i]);
- $c |= (
- (($x - $L[$i]) >> 8) & $n
- );
- $n &= (
- (($x ^ $L[$i]) - 1) >> 8
- );
- } while ($i !== 0);
-
- return $c === 0;
- }
-
- /**
- * @param string $R
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function small_order($R)
- {
- static $blocklist = array(
- /* 0 (order 4) */
- array(
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
- ),
- /* 1 (order 1) */
- array(
- 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
- ),
- /* 2707385501144840649318225287225658788936804267575313519463743609750303402022 (order 8) */
- array(
- 0x26, 0xe8, 0x95, 0x8f, 0xc2, 0xb2, 0x27, 0xb0,
- 0x45, 0xc3, 0xf4, 0x89, 0xf2, 0xef, 0x98, 0xf0,
- 0xd5, 0xdf, 0xac, 0x05, 0xd3, 0xc6, 0x33, 0x39,
- 0xb1, 0x38, 0x02, 0x88, 0x6d, 0x53, 0xfc, 0x05
- ),
- /* 55188659117513257062467267217118295137698188065244968500265048394206261417927 (order 8) */
- array(
- 0xc7, 0x17, 0x6a, 0x70, 0x3d, 0x4d, 0xd8, 0x4f,
- 0xba, 0x3c, 0x0b, 0x76, 0x0d, 0x10, 0x67, 0x0f,
- 0x2a, 0x20, 0x53, 0xfa, 0x2c, 0x39, 0xcc, 0xc6,
- 0x4e, 0xc7, 0xfd, 0x77, 0x92, 0xac, 0x03, 0x7a
- ),
- /* p-1 (order 2) */
- array(
- 0x13, 0xe8, 0x95, 0x8f, 0xc2, 0xb2, 0x27, 0xb0,
- 0x45, 0xc3, 0xf4, 0x89, 0xf2, 0xef, 0x98, 0xf0,
- 0xd5, 0xdf, 0xac, 0x05, 0xd3, 0xc6, 0x33, 0x39,
- 0xb1, 0x38, 0x02, 0x88, 0x6d, 0x53, 0xfc, 0x85
- ),
- /* p (order 4) */
- array(
- 0xb4, 0x17, 0x6a, 0x70, 0x3d, 0x4d, 0xd8, 0x4f,
- 0xba, 0x3c, 0x0b, 0x76, 0x0d, 0x10, 0x67, 0x0f,
- 0x2a, 0x20, 0x53, 0xfa, 0x2c, 0x39, 0xcc, 0xc6,
- 0x4e, 0xc7, 0xfd, 0x77, 0x92, 0xac, 0x03, 0xfa
- ),
- /* p+1 (order 1) */
- array(
- 0xec, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f
- ),
- /* p+2707385501144840649318225287225658788936804267575313519463743609750303402022 (order 8) */
- array(
- 0xed, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f
- ),
- /* p+55188659117513257062467267217118295137698188065244968500265048394206261417927 (order 8) */
- array(
- 0xee, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f
- ),
- /* 2p-1 (order 2) */
- array(
- 0xd9, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
- ),
- /* 2p (order 4) */
- array(
- 0xda, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
- ),
- /* 2p+1 (order 1) */
- array(
- 0xdb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
- )
- );
- /** @var array<int, array<int, int>> $blocklist */
- $countBlocklist = count($blocklist);
-
- for ($i = 0; $i < $countBlocklist; ++$i) {
- $c = 0;
- for ($j = 0; $j < 32; ++$j) {
- $c |= self::chrToInt($R[$j]) ^ $blocklist[$i][$j];
- }
- if ($c === 0) {
- return true;
- }
- }
- return false;
- }
-}
+<?php + +if (class_exists('ParagonIE_Sodium_Core32_Ed25519', false)) { + return; +} +if (!class_exists('ParagonIE_Sodium_Core32_Curve25519')) { + require_once dirname(__FILE__) . '/Curve25519.php'; +} + +/** + * Class ParagonIE_Sodium_Core32_Ed25519 + */ +abstract class ParagonIE_Sodium_Core32_Ed25519 extends ParagonIE_Sodium_Core32_Curve25519 +{ + const KEYPAIR_BYTES = 96; + const SEED_BYTES = 32; + + /** + * @internal You should not use this directly from another application + * + * @return string (96 bytes) + * @throws Exception + * @throws SodiumException + * @throws TypeError + */ + public static function keypair() + { + $seed = random_bytes(self::SEED_BYTES); + $pk = ''; + $sk = ''; + self::seed_keypair($pk, $sk, $seed); + return $sk . $pk; + } + + /** + * @internal You should not use this directly from another application + * + * @param string $pk + * @param string $sk + * @param string $seed + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function seed_keypair(&$pk, &$sk, $seed) + { + if (self::strlen($seed) !== self::SEED_BYTES) { + throw new RangeException('crypto_sign keypair seed must be 32 bytes long'); + } + + /** @var string $pk */ + $pk = self::publickey_from_secretkey($seed); + $sk = $seed . $pk; + return $sk; + } + + /** + * @internal You should not use this directly from another application + * + * @param string $keypair + * @return string + * @throws TypeError + */ + public static function secretkey($keypair) + { + if (self::strlen($keypair) !== self::KEYPAIR_BYTES) { + throw new RangeException('crypto_sign keypair must be 96 bytes long'); + } + return self::substr($keypair, 0, 64); + } + + /** + * @internal You should not use this directly from another application + * + * @param string $keypair + * @return string + * @throws RangeException + * @throws TypeError + */ + public static function publickey($keypair) + { + if (self::strlen($keypair) !== self::KEYPAIR_BYTES) { + throw new RangeException('crypto_sign keypair must be 96 bytes long'); + } + return self::substr($keypair, 64, 32); + } + + /** + * @internal You should not use this directly from another application + * + * @param string $sk + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function publickey_from_secretkey($sk) + { + /** @var string $sk */ + $sk = hash('sha512', self::substr($sk, 0, 32), true); + $sk[0] = self::intToChr( + self::chrToInt($sk[0]) & 248 + ); + $sk[31] = self::intToChr( + (self::chrToInt($sk[31]) & 63) | 64 + ); + return self::sk_to_pk($sk); + } + + /** + * @param string $pk + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function pk_to_curve25519($pk) + { + if (self::small_order($pk)) { + throw new SodiumException('Public key is on a small order'); + } + $A = self::ge_frombytes_negate_vartime($pk); + $p1 = self::ge_mul_l($A); + if (!self::fe_isnonzero($p1->X)) { + throw new SodiumException('Unexpected zero result'); + } + + # fe_1(one_minus_y); + # fe_sub(one_minus_y, one_minus_y, A.Y); + # fe_invert(one_minus_y, one_minus_y); + $one_minux_y = self::fe_invert( + self::fe_sub( + self::fe_1(), + $A->Y + ) + ); + + + # fe_1(x); + # fe_add(x, x, A.Y); + # fe_mul(x, x, one_minus_y); + $x = self::fe_mul( + self::fe_add(self::fe_1(), $A->Y), + $one_minux_y + ); + + # fe_tobytes(curve25519_pk, x); + return self::fe_tobytes($x); + } + + /** + * @internal You should not use this directly from another application + * + * @param string $sk + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function sk_to_pk($sk) + { + return self::ge_p3_tobytes( + self::ge_scalarmult_base( + self::substr($sk, 0, 32) + ) + ); + } + + /** + * @internal You should not use this directly from another application + * + * @param string $message + * @param string $sk + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function sign($message, $sk) + { + /** @var string $signature */ + $signature = self::sign_detached($message, $sk); + return $signature . $message; + } + + /** + * @internal You should not use this directly from another application + * + * @param string $message A signed message + * @param string $pk Public key + * @return string Message (without signature) + * @throws SodiumException + * @throws TypeError + */ + public static function sign_open($message, $pk) + { + /** @var string $signature */ + $signature = self::substr($message, 0, 64); + + /** @var string $message */ + $message = self::substr($message, 64); + + if (self::verify_detached($signature, $message, $pk)) { + return $message; + } + throw new SodiumException('Invalid signature'); + } + + /** + * @internal You should not use this directly from another application + * + * @param string $message + * @param string $sk + * @return string + * @throws SodiumException + * @throws TypeError + * @psalm-suppress PossiblyInvalidArgument + */ + public static function sign_detached($message, $sk) + { + # crypto_hash_sha512(az, sk, 32); + $az = hash('sha512', self::substr($sk, 0, 32), true); + + # az[0] &= 248; + # az[31] &= 63; + # az[31] |= 64; + $az[0] = self::intToChr(self::chrToInt($az[0]) & 248); + $az[31] = self::intToChr((self::chrToInt($az[31]) & 63) | 64); + + # crypto_hash_sha512_init(&hs); + # crypto_hash_sha512_update(&hs, az + 32, 32); + # crypto_hash_sha512_update(&hs, m, mlen); + # crypto_hash_sha512_final(&hs, nonce); + $hs = hash_init('sha512'); + self::hash_update($hs, self::substr($az, 32, 32)); + self::hash_update($hs, $message); + $nonceHash = hash_final($hs, true); + + # memmove(sig + 32, sk + 32, 32); + $pk = self::substr($sk, 32, 32); + + # sc_reduce(nonce); + # ge_scalarmult_base(&R, nonce); + # ge_p3_tobytes(sig, &R); + $nonce = self::sc_reduce($nonceHash) . self::substr($nonceHash, 32); + $sig = self::ge_p3_tobytes( + self::ge_scalarmult_base($nonce) + ); + + # crypto_hash_sha512_init(&hs); + # crypto_hash_sha512_update(&hs, sig, 64); + # crypto_hash_sha512_update(&hs, m, mlen); + # crypto_hash_sha512_final(&hs, hram); + $hs = hash_init('sha512'); + self::hash_update($hs, self::substr($sig, 0, 32)); + self::hash_update($hs, self::substr($pk, 0, 32)); + self::hash_update($hs, $message); + $hramHash = hash_final($hs, true); + + # sc_reduce(hram); + # sc_muladd(sig + 32, hram, az, nonce); + $hram = self::sc_reduce($hramHash); + $sigAfter = self::sc_muladd($hram, $az, $nonce); + $sig = self::substr($sig, 0, 32) . self::substr($sigAfter, 0, 32); + + try { + ParagonIE_Sodium_Compat::memzero($az); + } catch (SodiumException $ex) { + $az = null; + } + return $sig; + } + + /** + * @internal You should not use this directly from another application + * + * @param string $sig + * @param string $message + * @param string $pk + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function verify_detached($sig, $message, $pk) + { + if (self::strlen($sig) < 64) { + throw new SodiumException('Signature is too short'); + } + if ((self::chrToInt($sig[63]) & 240) && self::check_S_lt_L(self::substr($sig, 32, 32))) { + throw new SodiumException('S < L - Invalid signature'); + } + if (self::small_order($sig)) { + throw new SodiumException('Signature is on too small of an order'); + } + if ((self::chrToInt($sig[63]) & 224) !== 0) { + throw new SodiumException('Invalid signature'); + } + $d = 0; + for ($i = 0; $i < 32; ++$i) { + $d |= self::chrToInt($pk[$i]); + } + if ($d === 0) { + throw new SodiumException('All zero public key'); + } + + /** @var bool The original value of ParagonIE_Sodium_Compat::$fastMult */ + $orig = ParagonIE_Sodium_Compat::$fastMult; + + // Set ParagonIE_Sodium_Compat::$fastMult to true to speed up verification. + ParagonIE_Sodium_Compat::$fastMult = true; + + /** @var ParagonIE_Sodium_Core32_Curve25519_Ge_P3 $A */ + $A = self::ge_frombytes_negate_vartime($pk); + + /** @var string $hDigest */ + $hDigest = hash( + 'sha512', + self::substr($sig, 0, 32) . + self::substr($pk, 0, 32) . + $message, + true + ); + + /** @var string $h */ + $h = self::sc_reduce($hDigest) . self::substr($hDigest, 32); + + /** @var ParagonIE_Sodium_Core32_Curve25519_Ge_P2 $R */ + $R = self::ge_double_scalarmult_vartime( + $h, + $A, + self::substr($sig, 32) + ); + + /** @var string $rcheck */ + $rcheck = self::ge_tobytes($R); + + // Reset ParagonIE_Sodium_Compat::$fastMult to what it was before. + ParagonIE_Sodium_Compat::$fastMult = $orig; + + return self::verify_32($rcheck, self::substr($sig, 0, 32)); + } + + /** + * @internal You should not use this directly from another application + * + * @param string $S + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function check_S_lt_L($S) + { + if (self::strlen($S) < 32) { + throw new SodiumException('Signature must be 32 bytes'); + } + static $L = array( + 0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, + 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10 + ); + /** @var array<int, int> $L */ + $c = 0; + $n = 1; + $i = 32; + + do { + --$i; + $x = self::chrToInt($S[$i]); + $c |= ( + (($x - $L[$i]) >> 8) & $n + ); + $n &= ( + (($x ^ $L[$i]) - 1) >> 8 + ); + } while ($i !== 0); + + return $c === 0; + } + + /** + * @param string $R + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function small_order($R) + { + static $blocklist = array( + /* 0 (order 4) */ + array( + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + ), + /* 1 (order 1) */ + array( + 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + ), + /* 2707385501144840649318225287225658788936804267575313519463743609750303402022 (order 8) */ + array( + 0x26, 0xe8, 0x95, 0x8f, 0xc2, 0xb2, 0x27, 0xb0, + 0x45, 0xc3, 0xf4, 0x89, 0xf2, 0xef, 0x98, 0xf0, + 0xd5, 0xdf, 0xac, 0x05, 0xd3, 0xc6, 0x33, 0x39, + 0xb1, 0x38, 0x02, 0x88, 0x6d, 0x53, 0xfc, 0x05 + ), + /* 55188659117513257062467267217118295137698188065244968500265048394206261417927 (order 8) */ + array( + 0xc7, 0x17, 0x6a, 0x70, 0x3d, 0x4d, 0xd8, 0x4f, + 0xba, 0x3c, 0x0b, 0x76, 0x0d, 0x10, 0x67, 0x0f, + 0x2a, 0x20, 0x53, 0xfa, 0x2c, 0x39, 0xcc, 0xc6, + 0x4e, 0xc7, 0xfd, 0x77, 0x92, 0xac, 0x03, 0x7a + ), + /* p-1 (order 2) */ + array( + 0x13, 0xe8, 0x95, 0x8f, 0xc2, 0xb2, 0x27, 0xb0, + 0x45, 0xc3, 0xf4, 0x89, 0xf2, 0xef, 0x98, 0xf0, + 0xd5, 0xdf, 0xac, 0x05, 0xd3, 0xc6, 0x33, 0x39, + 0xb1, 0x38, 0x02, 0x88, 0x6d, 0x53, 0xfc, 0x85 + ), + /* p (order 4) */ + array( + 0xb4, 0x17, 0x6a, 0x70, 0x3d, 0x4d, 0xd8, 0x4f, + 0xba, 0x3c, 0x0b, 0x76, 0x0d, 0x10, 0x67, 0x0f, + 0x2a, 0x20, 0x53, 0xfa, 0x2c, 0x39, 0xcc, 0xc6, + 0x4e, 0xc7, 0xfd, 0x77, 0x92, 0xac, 0x03, 0xfa + ), + /* p+1 (order 1) */ + array( + 0xec, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f + ), + /* p+2707385501144840649318225287225658788936804267575313519463743609750303402022 (order 8) */ + array( + 0xed, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f + ), + /* p+55188659117513257062467267217118295137698188065244968500265048394206261417927 (order 8) */ + array( + 0xee, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f + ), + /* 2p-1 (order 2) */ + array( + 0xd9, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + ), + /* 2p (order 4) */ + array( + 0xda, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + ), + /* 2p+1 (order 1) */ + array( + 0xdb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + ) + ); + /** @var array<int, array<int, int>> $blocklist */ + $countBlocklist = count($blocklist); + + for ($i = 0; $i < $countBlocklist; ++$i) { + $c = 0; + for ($j = 0; $j < 32; ++$j) { + $c |= self::chrToInt($R[$j]) ^ $blocklist[$i][$j]; + } + if ($c === 0) { + return true; + } + } + return false; + } +} diff --git a/vendor/paragonie/sodium_compat/src/Core32/Int32.php b/vendor/paragonie/sodium_compat/src/Core32/Int32.php index c3a1790..8182155 100644 --- a/vendor/paragonie/sodium_compat/src/Core32/Int32.php +++ b/vendor/paragonie/sodium_compat/src/Core32/Int32.php @@ -138,9 +138,10 @@ class ParagonIE_Sodium_Core32_Int32 public function mask($m = 0) { /** @var int $hi */ - $hi = ($m >> 16) & 0xffff; + $hi = ((int) $m >> 16); + $hi &= 0xffff; /** @var int $lo */ - $lo = ($m & 0xffff); + $lo = ((int) $m) & 0xffff; return new ParagonIE_Sodium_Core32_Int32( array( (int) ($this->limbs[0] & $hi), @@ -168,8 +169,8 @@ class ParagonIE_Sodium_Core32_Int32 for ($j = 0; $j < $a_l; ++$j) { $b_j = $b[$j]; $product = ($a_i * $b_j) + $r[$i + $j]; - $carry = ($product >> $baseLog2 & 0xffff); - $r[$i + $j] = ($product - (int) ($carry * $base)) & 0xffff; + $carry = ((int) $product >> $baseLog2 & 0xffff); + $r[$i + $j] = ((int) $product - (int) ($carry * $base)) & 0xffff; $r[$i + $j + 1] += $carry; } } diff --git a/vendor/paragonie/sodium_compat/src/Core32/Int64.php b/vendor/paragonie/sodium_compat/src/Core32/Int64.php index dd06a3f..e94d798 100644 --- a/vendor/paragonie/sodium_compat/src/Core32/Int64.php +++ b/vendor/paragonie/sodium_compat/src/Core32/Int64.php @@ -337,9 +337,9 @@ class ParagonIE_Sodium_Core32_Int64 $a_i = $a[$i]; for ($j = 0; $j < $a_l; ++$j) { $b_j = $b[$j]; - $product = ($a_i * $b_j) + $r[$i + $j]; - $carry = ($product >> $baseLog2 & 0xffff); - $r[$i + $j] = ($product - (int) ($carry * $base)) & 0xffff; + $product = (($a_i * $b_j) + $r[$i + $j]); + $carry = (((int) $product >> $baseLog2) & 0xffff); + $r[$i + $j] = ((int) $product - (int) ($carry * $base)) & 0xffff; $r[$i + $j + 1] += $carry; } } diff --git a/vendor/paragonie/sodium_compat/src/Core32/Poly1305/State.php b/vendor/paragonie/sodium_compat/src/Core32/Poly1305/State.php index d80e1ff..90d0362 100644 --- a/vendor/paragonie/sodium_compat/src/Core32/Poly1305/State.php +++ b/vendor/paragonie/sodium_compat/src/Core32/Poly1305/State.php @@ -255,39 +255,39 @@ class ParagonIE_Sodium_Core32_Poly1305_State extends ParagonIE_Sodium_Core32_Uti /* h *= r */ $d0 = $zero - ->addInt64($h0->mulInt64($r0, 25)) - ->addInt64($s4->mulInt64($h1, 26)) - ->addInt64($s3->mulInt64($h2, 26)) - ->addInt64($s2->mulInt64($h3, 26)) - ->addInt64($s1->mulInt64($h4, 26)); + ->addInt64($h0->mulInt64($r0, 27)) + ->addInt64($s4->mulInt64($h1, 27)) + ->addInt64($s3->mulInt64($h2, 27)) + ->addInt64($s2->mulInt64($h3, 27)) + ->addInt64($s1->mulInt64($h4, 27)); $d1 = $zero - ->addInt64($h0->mulInt64($r1, 25)) - ->addInt64($h1->mulInt64($r0, 25)) - ->addInt64($s4->mulInt64($h2, 26)) - ->addInt64($s3->mulInt64($h3, 26)) - ->addInt64($s2->mulInt64($h4, 26)); + ->addInt64($h0->mulInt64($r1, 27)) + ->addInt64($h1->mulInt64($r0, 27)) + ->addInt64($s4->mulInt64($h2, 27)) + ->addInt64($s3->mulInt64($h3, 27)) + ->addInt64($s2->mulInt64($h4, 27)); $d2 = $zero - ->addInt64($h0->mulInt64($r2, 25)) - ->addInt64($h1->mulInt64($r1, 25)) - ->addInt64($h2->mulInt64($r0, 25)) - ->addInt64($s4->mulInt64($h3, 26)) - ->addInt64($s3->mulInt64($h4, 26)); + ->addInt64($h0->mulInt64($r2, 27)) + ->addInt64($h1->mulInt64($r1, 27)) + ->addInt64($h2->mulInt64($r0, 27)) + ->addInt64($s4->mulInt64($h3, 27)) + ->addInt64($s3->mulInt64($h4, 27)); $d3 = $zero - ->addInt64($h0->mulInt64($r3, 25)) - ->addInt64($h1->mulInt64($r2, 25)) - ->addInt64($h2->mulInt64($r1, 25)) - ->addInt64($h3->mulInt64($r0, 25)) - ->addInt64($s4->mulInt64($h4, 26)); + ->addInt64($h0->mulInt64($r3, 27)) + ->addInt64($h1->mulInt64($r2, 27)) + ->addInt64($h2->mulInt64($r1, 27)) + ->addInt64($h3->mulInt64($r0, 27)) + ->addInt64($s4->mulInt64($h4, 27)); $d4 = $zero - ->addInt64($h0->mulInt64($r4, 25)) - ->addInt64($h1->mulInt64($r3, 25)) - ->addInt64($h2->mulInt64($r2, 25)) - ->addInt64($h3->mulInt64($r1, 25)) - ->addInt64($h4->mulInt64($r0, 25)); + ->addInt64($h0->mulInt64($r4, 27)) + ->addInt64($h1->mulInt64($r3, 27)) + ->addInt64($h2->mulInt64($r2, 27)) + ->addInt64($h3->mulInt64($r1, 27)) + ->addInt64($h4->mulInt64($r0, 27)); /* (partial) h %= p */ $c = $d0->shiftRight(26); @@ -419,7 +419,7 @@ class ParagonIE_Sodium_Core32_Poly1305_State extends ParagonIE_Sodium_Core32_Uti $g4 = $g4->mask($mask); /** @var int $mask */ - $mask = (~$mask) & 0xffffffff; + $mask = ~$mask; $h0 = $h0->mask($mask)->orInt32($g0); $h1 = $h1->mask($mask)->orInt32($g1); diff --git a/vendor/paragonie/sodium_compat/src/Core32/XChaCha20.php b/vendor/paragonie/sodium_compat/src/Core32/XChaCha20.php index 1dfc859..404e8d2 100644 --- a/vendor/paragonie/sodium_compat/src/Core32/XChaCha20.php +++ b/vendor/paragonie/sodium_compat/src/Core32/XChaCha20.php @@ -61,4 +61,27 @@ class ParagonIE_Sodium_Core32_XChaCha20 extends ParagonIE_Sodium_Core32_HChaCha2 $message ); } + + /** + * @internal You should not use this directly from another application + * + * @param string $message + * @param string $nonce + * @param string $key + * @param string $ic + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function ietfStreamXorIc($message, $nonce = '', $key = '', $ic = '') + { + return self::encryptBytes( + new ParagonIE_Sodium_Core32_ChaCha20_IetfCtx( + self::hChaCha20(self::substr($nonce, 0, 16), $key), + "\x00\x00\x00\x00" . self::substr($nonce, 16, 8), + $ic + ), + $message + ); + } } diff --git a/vendor/paragonie/sodium_compat/src/File.php b/vendor/paragonie/sodium_compat/src/File.php index 2b22171..e8622c7 100644 --- a/vendor/paragonie/sodium_compat/src/File.php +++ b/vendor/paragonie/sodium_compat/src/File.php @@ -1,1560 +1,1547 @@ -<?php
-
-if (class_exists('ParagonIE_Sodium_File', false)) {
- return;
-}
-/**
- * Class ParagonIE_Sodium_File
- */
-class ParagonIE_Sodium_File extends ParagonIE_Sodium_Core_Util
-{
- /* PHP's default buffer size is 8192 for fread()/fwrite(). */
- const BUFFER_SIZE = 8192;
-
- /**
- * Box a file (rather than a string). Uses less memory than
- * ParagonIE_Sodium_Compat::crypto_box(), but produces
- * the same result.
- *
- * @param string $inputFile Absolute path to a file on the filesystem
- * @param string $outputFile Absolute path to a file on the filesystem
- * @param string $nonce Number to be used only once
- * @param string $keyPair ECDH secret key and ECDH public key concatenated
- *
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function box($inputFile, $outputFile, $nonce, $keyPair)
- {
- /* Type checks: */
- if (!is_string($inputFile)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
- }
- if (!is_string($outputFile)) {
- throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
- }
- if (!is_string($nonce)) {
- throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.');
- }
-
- /* Input validation: */
- if (!is_string($keyPair)) {
- throw new TypeError('Argument 4 must be a string, ' . gettype($keyPair) . ' given.');
- }
- if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_NONCEBYTES) {
- throw new TypeError('Argument 3 must be CRYPTO_BOX_NONCEBYTES bytes');
- }
- if (self::strlen($keyPair) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES) {
- throw new TypeError('Argument 4 must be CRYPTO_BOX_KEYPAIRBYTES bytes');
- }
-
- /** @var int $size */
- $size = filesize($inputFile);
- if (!is_int($size)) {
- throw new SodiumException('Could not obtain the file size');
- }
-
- /** @var resource $ifp */
- $ifp = fopen($inputFile, 'rb');
- if (!is_resource($ifp)) {
- throw new SodiumException('Could not open input file for reading');
- }
-
- /** @var resource $ofp */
- $ofp = fopen($outputFile, 'wb');
- if (!is_resource($ofp)) {
- fclose($ifp);
- throw new SodiumException('Could not open output file for writing');
- }
-
- $res = self::box_encrypt($ifp, $ofp, $size, $nonce, $keyPair);
- fclose($ifp);
- fclose($ofp);
- return $res;
- }
-
- /**
- * Open a boxed file (rather than a string). Uses less memory than
- * ParagonIE_Sodium_Compat::crypto_box_open(), but produces
- * the same result.
- *
- * Warning: Does not protect against TOCTOU attacks. You should
- * just load the file into memory and use crypto_box_open() if
- * you are worried about those.
- *
- * @param string $inputFile
- * @param string $outputFile
- * @param string $nonce
- * @param string $keypair
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function box_open($inputFile, $outputFile, $nonce, $keypair)
- {
- /* Type checks: */
- if (!is_string($inputFile)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
- }
- if (!is_string($outputFile)) {
- throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
- }
- if (!is_string($nonce)) {
- throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.');
- }
- if (!is_string($keypair)) {
- throw new TypeError('Argument 4 must be a string, ' . gettype($keypair) . ' given.');
- }
-
- /* Input validation: */
- if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_NONCEBYTES) {
- throw new TypeError('Argument 4 must be CRYPTO_BOX_NONCEBYTES bytes');
- }
- if (self::strlen($keypair) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES) {
- throw new TypeError('Argument 4 must be CRYPTO_BOX_KEYPAIRBYTES bytes');
- }
-
- /** @var int $size */
- $size = filesize($inputFile);
- if (!is_int($size)) {
- throw new SodiumException('Could not obtain the file size');
- }
-
- /** @var resource $ifp */
- $ifp = fopen($inputFile, 'rb');
- if (!is_resource($ifp)) {
- throw new SodiumException('Could not open input file for reading');
- }
-
- /** @var resource $ofp */
- $ofp = fopen($outputFile, 'wb');
- if (!is_resource($ofp)) {
- fclose($ifp);
- throw new SodiumException('Could not open output file for writing');
- }
-
- $res = self::box_decrypt($ifp, $ofp, $size, $nonce, $keypair);
- fclose($ifp);
- fclose($ofp);
- try {
- ParagonIE_Sodium_Compat::memzero($nonce);
- ParagonIE_Sodium_Compat::memzero($ephKeypair);
- } catch (SodiumException $ex) {
- if (isset($ephKeypair)) {
- unset($ephKeypair);
- }
- }
- return $res;
- }
-
- /**
- * Seal a file (rather than a string). Uses less memory than
- * ParagonIE_Sodium_Compat::crypto_box_seal(), but produces
- * the same result.
- *
- * @param string $inputFile Absolute path to a file on the filesystem
- * @param string $outputFile Absolute path to a file on the filesystem
- * @param string $publicKey ECDH public key
- *
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function box_seal($inputFile, $outputFile, $publicKey)
- {
- /* Type checks: */
- if (!is_string($inputFile)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
- }
- if (!is_string($outputFile)) {
- throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
- }
- if (!is_string($publicKey)) {
- throw new TypeError('Argument 3 must be a string, ' . gettype($publicKey) . ' given.');
- }
-
- /* Input validation: */
- if (self::strlen($publicKey) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES) {
- throw new TypeError('Argument 3 must be CRYPTO_BOX_PUBLICKEYBYTES bytes');
- }
-
- /** @var int $size */
- $size = filesize($inputFile);
- if (!is_int($size)) {
- throw new SodiumException('Could not obtain the file size');
- }
-
- /** @var resource $ifp */
- $ifp = fopen($inputFile, 'rb');
- if (!is_resource($ifp)) {
- throw new SodiumException('Could not open input file for reading');
- }
-
- /** @var resource $ofp */
- $ofp = fopen($outputFile, 'wb');
- if (!is_resource($ofp)) {
- fclose($ifp);
- throw new SodiumException('Could not open output file for writing');
- }
-
- /** @var string $ephKeypair */
- $ephKeypair = ParagonIE_Sodium_Compat::crypto_box_keypair();
-
- /** @var string $msgKeypair */
- $msgKeypair = ParagonIE_Sodium_Compat::crypto_box_keypair_from_secretkey_and_publickey(
- ParagonIE_Sodium_Compat::crypto_box_secretkey($ephKeypair),
- $publicKey
- );
-
- /** @var string $ephemeralPK */
- $ephemeralPK = ParagonIE_Sodium_Compat::crypto_box_publickey($ephKeypair);
-
- /** @var string $nonce */
- $nonce = ParagonIE_Sodium_Compat::crypto_generichash(
- $ephemeralPK . $publicKey,
- '',
- 24
- );
-
- /** @var int $firstWrite */
- $firstWrite = fwrite(
- $ofp,
- $ephemeralPK,
- ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES
- );
- if (!is_int($firstWrite)) {
- fclose($ifp);
- fclose($ofp);
- ParagonIE_Sodium_Compat::memzero($ephKeypair);
- throw new SodiumException('Could not write to output file');
- }
- if ($firstWrite !== ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES) {
- ParagonIE_Sodium_Compat::memzero($ephKeypair);
- fclose($ifp);
- fclose($ofp);
- throw new SodiumException('Error writing public key to output file');
- }
-
- $res = self::box_encrypt($ifp, $ofp, $size, $nonce, $msgKeypair);
- fclose($ifp);
- fclose($ofp);
- try {
- ParagonIE_Sodium_Compat::memzero($nonce);
- ParagonIE_Sodium_Compat::memzero($ephKeypair);
- } catch (SodiumException $ex) {
- /** @psalm-suppress PossiblyUndefinedVariable */
- unset($ephKeypair);
- }
- return $res;
- }
-
- /**
- * Open a sealed file (rather than a string). Uses less memory than
- * ParagonIE_Sodium_Compat::crypto_box_seal_open(), but produces
- * the same result.
- *
- * Warning: Does not protect against TOCTOU attacks. You should
- * just load the file into memory and use crypto_box_seal_open() if
- * you are worried about those.
- *
- * @param string $inputFile
- * @param string $outputFile
- * @param string $ecdhKeypair
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function box_seal_open($inputFile, $outputFile, $ecdhKeypair)
- {
- /* Type checks: */
- if (!is_string($inputFile)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
- }
- if (!is_string($outputFile)) {
- throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
- }
- if (!is_string($ecdhKeypair)) {
- throw new TypeError('Argument 3 must be a string, ' . gettype($ecdhKeypair) . ' given.');
- }
-
- /* Input validation: */
- if (self::strlen($ecdhKeypair) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES) {
- throw new TypeError('Argument 3 must be CRYPTO_BOX_KEYPAIRBYTES bytes');
- }
-
- $publicKey = ParagonIE_Sodium_Compat::crypto_box_publickey($ecdhKeypair);
-
- /** @var int $size */
- $size = filesize($inputFile);
- if (!is_int($size)) {
- throw new SodiumException('Could not obtain the file size');
- }
-
- /** @var resource $ifp */
- $ifp = fopen($inputFile, 'rb');
- if (!is_resource($ifp)) {
- throw new SodiumException('Could not open input file for reading');
- }
-
- /** @var resource $ofp */
- $ofp = fopen($outputFile, 'wb');
- if (!is_resource($ofp)) {
- fclose($ifp);
- throw new SodiumException('Could not open output file for writing');
- }
-
- $ephemeralPK = fread($ifp, ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES);
- if (!is_string($ephemeralPK)) {
- throw new SodiumException('Could not read input file');
- }
- if (self::strlen($ephemeralPK) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES) {
- fclose($ifp);
- fclose($ofp);
- throw new SodiumException('Could not read public key from sealed file');
- }
-
- $nonce = ParagonIE_Sodium_Compat::crypto_generichash(
- $ephemeralPK . $publicKey,
- '',
- 24
- );
- $msgKeypair = ParagonIE_Sodium_Compat::crypto_box_keypair_from_secretkey_and_publickey(
- ParagonIE_Sodium_Compat::crypto_box_secretkey($ecdhKeypair),
- $ephemeralPK
- );
-
- $res = self::box_decrypt($ifp, $ofp, $size, $nonce, $msgKeypair);
- fclose($ifp);
- fclose($ofp);
- try {
- ParagonIE_Sodium_Compat::memzero($nonce);
- ParagonIE_Sodium_Compat::memzero($ephKeypair);
- } catch (SodiumException $ex) {
- if (isset($ephKeypair)) {
- unset($ephKeypair);
- }
- }
- return $res;
- }
-
- /**
- * Calculate the BLAKE2b hash of a file.
- *
- * @param string $filePath Absolute path to a file on the filesystem
- * @param string|null $key BLAKE2b key
- * @param int $outputLength Length of hash output
- *
- * @return string BLAKE2b hash
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress FailedTypeResolution
- */
- public static function generichash($filePath, $key = '', $outputLength = 32)
- {
- /* Type checks: */
- if (!is_string($filePath)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($filePath) . ' given.');
- }
- if (!is_string($key)) {
- if (is_null($key)) {
- $key = '';
- } else {
- throw new TypeError('Argument 2 must be a string, ' . gettype($key) . ' given.');
- }
- }
- if (!is_int($outputLength)) {
- if (!is_numeric($outputLength)) {
- throw new TypeError('Argument 3 must be an integer, ' . gettype($outputLength) . ' given.');
- }
- $outputLength = (int) $outputLength;
- }
-
- /* Input validation: */
- if (!empty($key)) {
- if (self::strlen($key) < ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_KEYBYTES_MIN) {
- throw new TypeError('Argument 2 must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes');
- }
- if (self::strlen($key) > ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_KEYBYTES_MAX) {
- throw new TypeError('Argument 2 must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes');
- }
- }
- if ($outputLength < ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_BYTES_MIN) {
- throw new SodiumException('Argument 3 must be at least CRYPTO_GENERICHASH_BYTES_MIN');
- }
- if ($outputLength > ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_BYTES_MAX) {
- throw new SodiumException('Argument 3 must be at least CRYPTO_GENERICHASH_BYTES_MAX');
- }
-
- /** @var int $size */
- $size = filesize($filePath);
- if (!is_int($size)) {
- throw new SodiumException('Could not obtain the file size');
- }
-
- /** @var resource $fp */
- $fp = fopen($filePath, 'rb');
- if (!is_resource($fp)) {
- throw new SodiumException('Could not open input file for reading');
- }
- $ctx = ParagonIE_Sodium_Compat::crypto_generichash_init($key, $outputLength);
- while ($size > 0) {
- $blockSize = $size > 64
- ? 64
- : $size;
- $read = fread($fp, $blockSize);
- if (!is_string($read)) {
- throw new SodiumException('Could not read input file');
- }
- ParagonIE_Sodium_Compat::crypto_generichash_update($ctx, $read);
- $size -= $blockSize;
- }
-
- fclose($fp);
- return ParagonIE_Sodium_Compat::crypto_generichash_final($ctx, $outputLength);
- }
-
- /**
- * Encrypt a file (rather than a string). Uses less memory than
- * ParagonIE_Sodium_Compat::crypto_secretbox(), but produces
- * the same result.
- *
- * @param string $inputFile Absolute path to a file on the filesystem
- * @param string $outputFile Absolute path to a file on the filesystem
- * @param string $nonce Number to be used only once
- * @param string $key Encryption key
- *
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function secretbox($inputFile, $outputFile, $nonce, $key)
- {
- /* Type checks: */
- if (!is_string($inputFile)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given..');
- }
- if (!is_string($outputFile)) {
- throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
- }
- if (!is_string($nonce)) {
- throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.');
- }
-
- /* Input validation: */
- if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_NONCEBYTES) {
- throw new TypeError('Argument 3 must be CRYPTO_SECRETBOX_NONCEBYTES bytes');
- }
- if (!is_string($key)) {
- throw new TypeError('Argument 4 must be a string, ' . gettype($key) . ' given.');
- }
- if (self::strlen($key) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_KEYBYTES) {
- throw new TypeError('Argument 4 must be CRYPTO_SECRETBOX_KEYBYTES bytes');
- }
-
- /** @var int $size */
- $size = filesize($inputFile);
- if (!is_int($size)) {
- throw new SodiumException('Could not obtain the file size');
- }
-
- /** @var resource $ifp */
- $ifp = fopen($inputFile, 'rb');
- if (!is_resource($ifp)) {
- throw new SodiumException('Could not open input file for reading');
- }
-
- /** @var resource $ofp */
- $ofp = fopen($outputFile, 'wb');
- if (!is_resource($ofp)) {
- fclose($ifp);
- throw new SodiumException('Could not open output file for writing');
- }
-
- $res = self::secretbox_encrypt($ifp, $ofp, $size, $nonce, $key);
- fclose($ifp);
- fclose($ofp);
- return $res;
- }
- /**
- * Seal a file (rather than a string). Uses less memory than
- * ParagonIE_Sodium_Compat::crypto_secretbox_open(), but produces
- * the same result.
- *
- * Warning: Does not protect against TOCTOU attacks. You should
- * just load the file into memory and use crypto_secretbox_open() if
- * you are worried about those.
- *
- * @param string $inputFile
- * @param string $outputFile
- * @param string $nonce
- * @param string $key
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- public static function secretbox_open($inputFile, $outputFile, $nonce, $key)
- {
- /* Type checks: */
- if (!is_string($inputFile)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
- }
- if (!is_string($outputFile)) {
- throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
- }
- if (!is_string($nonce)) {
- throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.');
- }
- if (!is_string($key)) {
- throw new TypeError('Argument 4 must be a string, ' . gettype($key) . ' given.');
- }
-
- /* Input validation: */
- if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_NONCEBYTES) {
- throw new TypeError('Argument 4 must be CRYPTO_SECRETBOX_NONCEBYTES bytes');
- }
- if (self::strlen($key) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_KEYBYTES) {
- throw new TypeError('Argument 4 must be CRYPTO_SECRETBOXBOX_KEYBYTES bytes');
- }
-
- /** @var int $size */
- $size = filesize($inputFile);
- if (!is_int($size)) {
- throw new SodiumException('Could not obtain the file size');
- }
-
- /** @var resource $ifp */
- $ifp = fopen($inputFile, 'rb');
- if (!is_resource($ifp)) {
- throw new SodiumException('Could not open input file for reading');
- }
-
- /** @var resource $ofp */
- $ofp = fopen($outputFile, 'wb');
- if (!is_resource($ofp)) {
- fclose($ifp);
- throw new SodiumException('Could not open output file for writing');
- }
-
- $res = self::secretbox_decrypt($ifp, $ofp, $size, $nonce, $key);
- fclose($ifp);
- fclose($ofp);
- try {
- ParagonIE_Sodium_Compat::memzero($key);
- } catch (SodiumException $ex) {
- /** @psalm-suppress PossiblyUndefinedVariable */
- unset($key);
- }
- return $res;
- }
-
- /**
- * Sign a file (rather than a string). Uses less memory than
- * ParagonIE_Sodium_Compat::crypto_sign_detached(), but produces
- * the same result.
- *
- * @param string $filePath Absolute path to a file on the filesystem
- * @param string $secretKey Secret signing key
- *
- * @return string Ed25519 signature
- * @throws SodiumException
- * @throws TypeError
- */
- public static function sign($filePath, $secretKey)
- {
- /* Type checks: */
- if (!is_string($filePath)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($filePath) . ' given.');
- }
- if (!is_string($secretKey)) {
- throw new TypeError('Argument 2 must be a string, ' . gettype($secretKey) . ' given.');
- }
-
- /* Input validation: */
- if (self::strlen($secretKey) !== ParagonIE_Sodium_Compat::CRYPTO_SIGN_SECRETKEYBYTES) {
- throw new TypeError('Argument 2 must be CRYPTO_SIGN_SECRETKEYBYTES bytes');
- }
- if (PHP_INT_SIZE === 4) {
- return self::sign_core32($filePath, $secretKey);
- }
-
- /** @var int $size */
- $size = filesize($filePath);
- if (!is_int($size)) {
- throw new SodiumException('Could not obtain the file size');
- }
-
- /** @var resource $fp */
- $fp = fopen($filePath, 'rb');
- if (!is_resource($fp)) {
- throw new SodiumException('Could not open input file for reading');
- }
-
- /** @var string $az */
- $az = hash('sha512', self::substr($secretKey, 0, 32), true);
-
- $az[0] = self::intToChr(self::chrToInt($az[0]) & 248);
- $az[31] = self::intToChr((self::chrToInt($az[31]) & 63) | 64);
-
- $hs = hash_init('sha512');
- self::hash_update($hs, self::substr($az, 32, 32));
- /** @var resource $hs */
- $hs = self::updateHashWithFile($hs, $fp, $size);
-
- /** @var string $nonceHash */
- $nonceHash = hash_final($hs, true);
-
- /** @var string $pk */
- $pk = self::substr($secretKey, 32, 32);
-
- /** @var string $nonce */
- $nonce = ParagonIE_Sodium_Core_Ed25519::sc_reduce($nonceHash) . self::substr($nonceHash, 32);
-
- /** @var string $sig */
- $sig = ParagonIE_Sodium_Core_Ed25519::ge_p3_tobytes(
- ParagonIE_Sodium_Core_Ed25519::ge_scalarmult_base($nonce)
- );
-
- $hs = hash_init('sha512');
- self::hash_update($hs, self::substr($sig, 0, 32));
- self::hash_update($hs, self::substr($pk, 0, 32));
- /** @var resource $hs */
- $hs = self::updateHashWithFile($hs, $fp, $size);
-
- /** @var string $hramHash */
- $hramHash = hash_final($hs, true);
-
- /** @var string $hram */
- $hram = ParagonIE_Sodium_Core_Ed25519::sc_reduce($hramHash);
-
- /** @var string $sigAfter */
- $sigAfter = ParagonIE_Sodium_Core_Ed25519::sc_muladd($hram, $az, $nonce);
-
- /** @var string $sig */
- $sig = self::substr($sig, 0, 32) . self::substr($sigAfter, 0, 32);
-
- try {
- ParagonIE_Sodium_Compat::memzero($az);
- } catch (SodiumException $ex) {
- $az = null;
- }
- fclose($fp);
- return $sig;
- }
-
- /**
- * Verify a file (rather than a string). Uses less memory than
- * ParagonIE_Sodium_Compat::crypto_sign_verify_detached(), but
- * produces the same result.
- *
- * @param string $sig Ed25519 signature
- * @param string $filePath Absolute path to a file on the filesystem
- * @param string $publicKey Signing public key
- *
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- * @throws Exception
- */
- public static function verify($sig, $filePath, $publicKey)
- {
- /* Type checks: */
- if (!is_string($sig)) {
- throw new TypeError('Argument 1 must be a string, ' . gettype($sig) . ' given.');
- }
- if (!is_string($filePath)) {
- throw new TypeError('Argument 2 must be a string, ' . gettype($filePath) . ' given.');
- }
- if (!is_string($publicKey)) {
- throw new TypeError('Argument 3 must be a string, ' . gettype($publicKey) . ' given.');
- }
-
- /* Input validation: */
- if (self::strlen($sig) !== ParagonIE_Sodium_Compat::CRYPTO_SIGN_BYTES) {
- throw new TypeError('Argument 1 must be CRYPTO_SIGN_BYTES bytes');
- }
- if (self::strlen($publicKey) !== ParagonIE_Sodium_Compat::CRYPTO_SIGN_PUBLICKEYBYTES) {
- throw new TypeError('Argument 3 must be CRYPTO_SIGN_PUBLICKEYBYTES bytes');
- }
- if (self::strlen($sig) < 64) {
- throw new SodiumException('Signature is too short');
- }
-
- if (PHP_INT_SIZE === 4) {
- return self::verify_core32($sig, $filePath, $publicKey);
- }
-
- /* Security checks */
- if (
- (ParagonIE_Sodium_Core_Ed25519::chrToInt($sig[63]) & 240)
- &&
- ParagonIE_Sodium_Core_Ed25519::check_S_lt_L(self::substr($sig, 32, 32))
- ) {
- throw new SodiumException('S < L - Invalid signature');
- }
- if (ParagonIE_Sodium_Core_Ed25519::small_order($sig)) {
- throw new SodiumException('Signature is on too small of an order');
- }
- if ((self::chrToInt($sig[63]) & 224) !== 0) {
- throw new SodiumException('Invalid signature');
- }
- $d = 0;
- for ($i = 0; $i < 32; ++$i) {
- $d |= self::chrToInt($publicKey[$i]);
- }
- if ($d === 0) {
- throw new SodiumException('All zero public key');
- }
-
- /** @var int $size */
- $size = filesize($filePath);
- if (!is_int($size)) {
- throw new SodiumException('Could not obtain the file size');
- }
-
- /** @var resource $fp */
- $fp = fopen($filePath, 'rb');
- if (!is_resource($fp)) {
- throw new SodiumException('Could not open input file for reading');
- }
-
- /** @var bool The original value of ParagonIE_Sodium_Compat::$fastMult */
- $orig = ParagonIE_Sodium_Compat::$fastMult;
-
- // Set ParagonIE_Sodium_Compat::$fastMult to true to speed up verification.
- ParagonIE_Sodium_Compat::$fastMult = true;
-
- /** @var ParagonIE_Sodium_Core_Curve25519_Ge_P3 $A */
- $A = ParagonIE_Sodium_Core_Ed25519::ge_frombytes_negate_vartime($publicKey);
-
- $hs = hash_init('sha512');
- self::hash_update($hs, self::substr($sig, 0, 32));
- self::hash_update($hs, self::substr($publicKey, 0, 32));
- /** @var resource $hs */
- $hs = self::updateHashWithFile($hs, $fp, $size);
- /** @var string $hDigest */
- $hDigest = hash_final($hs, true);
-
- /** @var string $h */
- $h = ParagonIE_Sodium_Core_Ed25519::sc_reduce($hDigest) . self::substr($hDigest, 32);
-
- /** @var ParagonIE_Sodium_Core_Curve25519_Ge_P2 $R */
- $R = ParagonIE_Sodium_Core_Ed25519::ge_double_scalarmult_vartime(
- $h,
- $A,
- self::substr($sig, 32)
- );
-
- /** @var string $rcheck */
- $rcheck = ParagonIE_Sodium_Core_Ed25519::ge_tobytes($R);
-
- // Close the file handle
- fclose($fp);
-
- // Reset ParagonIE_Sodium_Compat::$fastMult to what it was before.
- ParagonIE_Sodium_Compat::$fastMult = $orig;
- return self::verify_32($rcheck, self::substr($sig, 0, 32));
- }
-
- /**
- * @param resource $ifp
- * @param resource $ofp
- * @param int $mlen
- * @param string $nonce
- * @param string $boxKeypair
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- protected static function box_encrypt($ifp, $ofp, $mlen, $nonce, $boxKeypair)
- {
- if (PHP_INT_SIZE === 4) {
- return self::secretbox_encrypt(
- $ifp,
- $ofp,
- $mlen,
- $nonce,
- ParagonIE_Sodium_Crypto32::box_beforenm(
- ParagonIE_Sodium_Crypto32::box_secretkey($boxKeypair),
- ParagonIE_Sodium_Crypto32::box_publickey($boxKeypair)
- )
- );
- }
- return self::secretbox_encrypt(
- $ifp,
- $ofp,
- $mlen,
- $nonce,
- ParagonIE_Sodium_Crypto::box_beforenm(
- ParagonIE_Sodium_Crypto::box_secretkey($boxKeypair),
- ParagonIE_Sodium_Crypto::box_publickey($boxKeypair)
- )
- );
- }
-
-
- /**
- * @param resource $ifp
- * @param resource $ofp
- * @param int $mlen
- * @param string $nonce
- * @param string $boxKeypair
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- protected static function box_decrypt($ifp, $ofp, $mlen, $nonce, $boxKeypair)
- {
- if (PHP_INT_SIZE === 4) {
- return self::secretbox_decrypt(
- $ifp,
- $ofp,
- $mlen,
- $nonce,
- ParagonIE_Sodium_Crypto32::box_beforenm(
- ParagonIE_Sodium_Crypto32::box_secretkey($boxKeypair),
- ParagonIE_Sodium_Crypto32::box_publickey($boxKeypair)
- )
- );
- }
- return self::secretbox_decrypt(
- $ifp,
- $ofp,
- $mlen,
- $nonce,
- ParagonIE_Sodium_Crypto::box_beforenm(
- ParagonIE_Sodium_Crypto::box_secretkey($boxKeypair),
- ParagonIE_Sodium_Crypto::box_publickey($boxKeypair)
- )
- );
- }
-
- /**
- * Encrypt a file
- *
- * @param resource $ifp
- * @param resource $ofp
- * @param int $mlen
- * @param string $nonce
- * @param string $key
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- protected static function secretbox_encrypt($ifp, $ofp, $mlen, $nonce, $key)
- {
- if (PHP_INT_SIZE === 4) {
- return self::secretbox_encrypt_core32($ifp, $ofp, $mlen, $nonce, $key);
- }
-
- $plaintext = fread($ifp, 32);
- if (!is_string($plaintext)) {
- throw new SodiumException('Could not read input file');
- }
- $first32 = self::ftell($ifp);
-
- /** @var string $subkey */
- $subkey = ParagonIE_Sodium_Core_HSalsa20::hsalsa20($nonce, $key);
-
- /** @var string $realNonce */
- $realNonce = ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8);
-
- /** @var string $block0 */
- $block0 = str_repeat("\x00", 32);
-
- /** @var int $mlen - Length of the plaintext message */
- $mlen0 = $mlen;
- if ($mlen0 > 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES) {
- $mlen0 = 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES;
- }
- $block0 .= ParagonIE_Sodium_Core_Util::substr($plaintext, 0, $mlen0);
-
- /** @var string $block0 */
- $block0 = ParagonIE_Sodium_Core_Salsa20::salsa20_xor(
- $block0,
- $realNonce,
- $subkey
- );
-
- $state = new ParagonIE_Sodium_Core_Poly1305_State(
- ParagonIE_Sodium_Core_Util::substr(
- $block0,
- 0,
- ParagonIE_Sodium_Crypto::onetimeauth_poly1305_KEYBYTES
- )
- );
-
- // Pre-write 16 blank bytes for the Poly1305 tag
- $start = self::ftell($ofp);
- fwrite($ofp, str_repeat("\x00", 16));
-
- /** @var string $c */
- $cBlock = ParagonIE_Sodium_Core_Util::substr(
- $block0,
- ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES
- );
- $state->update($cBlock);
- fwrite($ofp, $cBlock);
- $mlen -= 32;
-
- /** @var int $iter */
- $iter = 1;
-
- /** @var int $incr */
- $incr = self::BUFFER_SIZE >> 6;
-
- /*
- * Set the cursor to the end of the first half-block. All future bytes will
- * generated from salsa20_xor_ic, starting from 1 (second block).
- */
- fseek($ifp, $first32, SEEK_SET);
-
- while ($mlen > 0) {
- $blockSize = $mlen > self::BUFFER_SIZE
- ? self::BUFFER_SIZE
- : $mlen;
- $plaintext = fread($ifp, $blockSize);
- if (!is_string($plaintext)) {
- throw new SodiumException('Could not read input file');
- }
- $cBlock = ParagonIE_Sodium_Core_Salsa20::salsa20_xor_ic(
- $plaintext,
- $realNonce,
- $iter,
- $subkey
- );
- fwrite($ofp, $cBlock, $blockSize);
- $state->update($cBlock);
-
- $mlen -= $blockSize;
- $iter += $incr;
- }
- try {
- ParagonIE_Sodium_Compat::memzero($block0);
- ParagonIE_Sodium_Compat::memzero($subkey);
- } catch (SodiumException $ex) {
- $block0 = null;
- $subkey = null;
- }
- $end = self::ftell($ofp);
-
- /*
- * Write the Poly1305 authentication tag that provides integrity
- * over the ciphertext (encrypt-then-MAC)
- */
- fseek($ofp, $start, SEEK_SET);
- fwrite($ofp, $state->finish(), ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_MACBYTES);
- fseek($ofp, $end, SEEK_SET);
- unset($state);
-
- return true;
- }
-
- /**
- * Decrypt a file
- *
- * @param resource $ifp
- * @param resource $ofp
- * @param int $mlen
- * @param string $nonce
- * @param string $key
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- protected static function secretbox_decrypt($ifp, $ofp, $mlen, $nonce, $key)
- {
- if (PHP_INT_SIZE === 4) {
- return self::secretbox_decrypt_core32($ifp, $ofp, $mlen, $nonce, $key);
- }
- $tag = fread($ifp, 16);
- if (!is_string($tag)) {
- throw new SodiumException('Could not read input file');
- }
-
- /** @var string $subkey */
- $subkey = ParagonIE_Sodium_Core_HSalsa20::hsalsa20($nonce, $key);
-
- /** @var string $realNonce */
- $realNonce = ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8);
-
- /** @var string $block0 */
- $block0 = ParagonIE_Sodium_Core_Salsa20::salsa20(
- 64,
- ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8),
- $subkey
- );
-
- /* Verify the Poly1305 MAC -before- attempting to decrypt! */
- $state = new ParagonIE_Sodium_Core_Poly1305_State(self::substr($block0, 0, 32));
- if (!self::onetimeauth_verify($state, $ifp, $tag, $mlen)) {
- throw new SodiumException('Invalid MAC');
- }
-
- /*
- * Set the cursor to the end of the first half-block. All future bytes will
- * generated from salsa20_xor_ic, starting from 1 (second block).
- */
- $first32 = fread($ifp, 32);
- if (!is_string($first32)) {
- throw new SodiumException('Could not read input file');
- }
- $first32len = self::strlen($first32);
- fwrite(
- $ofp,
- self::xorStrings(
- self::substr($block0, 32, $first32len),
- self::substr($first32, 0, $first32len)
- )
- );
- $mlen -= 32;
-
- /** @var int $iter */
- $iter = 1;
-
- /** @var int $incr */
- $incr = self::BUFFER_SIZE >> 6;
-
- /* Decrypts ciphertext, writes to output file. */
- while ($mlen > 0) {
- $blockSize = $mlen > self::BUFFER_SIZE
- ? self::BUFFER_SIZE
- : $mlen;
- $ciphertext = fread($ifp, $blockSize);
- if (!is_string($ciphertext)) {
- throw new SodiumException('Could not read input file');
- }
- $pBlock = ParagonIE_Sodium_Core_Salsa20::salsa20_xor_ic(
- $ciphertext,
- $realNonce,
- $iter,
- $subkey
- );
- fwrite($ofp, $pBlock, $blockSize);
- $mlen -= $blockSize;
- $iter += $incr;
- }
- return true;
- }
-
- /**
- * @param ParagonIE_Sodium_Core_Poly1305_State $state
- * @param resource $ifp
- * @param string $tag
- * @param int $mlen
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- protected static function onetimeauth_verify(
- ParagonIE_Sodium_Core_Poly1305_State $state,
- $ifp,
- $tag = '',
- $mlen = 0
- ) {
- /** @var int $pos */
- $pos = self::ftell($ifp);
-
- /** @var int $iter */
- $iter = 1;
-
- /** @var int $incr */
- $incr = self::BUFFER_SIZE >> 6;
-
- while ($mlen > 0) {
- $blockSize = $mlen > self::BUFFER_SIZE
- ? self::BUFFER_SIZE
- : $mlen;
- $ciphertext = fread($ifp, $blockSize);
- if (!is_string($ciphertext)) {
- throw new SodiumException('Could not read input file');
- }
- $state->update($ciphertext);
- $mlen -= $blockSize;
- $iter += $incr;
- }
- $res = ParagonIE_Sodium_Core_Util::verify_16($tag, $state->finish());
-
- fseek($ifp, $pos, SEEK_SET);
- return $res;
- }
-
- /**
- * Update a hash context with the contents of a file, without
- * loading the entire file into memory.
- *
- * @param resource|HashContext $hash
- * @param resource $fp
- * @param int $size
- * @return resource|object Resource on PHP < 7.2, HashContext object on PHP >= 7.2
- * @throws SodiumException
- * @throws TypeError
- * @psalm-suppress PossiblyInvalidArgument
- * PHP 7.2 changes from a resource to an object,
- * which causes Psalm to complain about an error.
- * @psalm-suppress TypeCoercion
- * Ditto.
- */
- public static function updateHashWithFile($hash, $fp, $size = 0)
- {
- /* Type checks: */
- if (PHP_VERSION_ID < 70200) {
- if (!is_resource($hash)) {
- throw new TypeError('Argument 1 must be a resource, ' . gettype($hash) . ' given.');
- }
- } else {
- if (!is_object($hash)) {
- throw new TypeError('Argument 1 must be an object (PHP 7.2+), ' . gettype($hash) . ' given.');
- }
- }
-
- if (!is_resource($fp)) {
- throw new TypeError('Argument 2 must be a resource, ' . gettype($fp) . ' given.');
- }
- if (!is_int($size)) {
- throw new TypeError('Argument 3 must be an integer, ' . gettype($size) . ' given.');
- }
-
- /** @var int $originalPosition */
- $originalPosition = self::ftell($fp);
-
- // Move file pointer to beginning of file
- fseek($fp, 0, SEEK_SET);
- for ($i = 0; $i < $size; $i += self::BUFFER_SIZE) {
- /** @var string|bool $message */
- $message = fread(
- $fp,
- ($size - $i) > self::BUFFER_SIZE
- ? $size - $i
- : self::BUFFER_SIZE
- );
- if (!is_string($message)) {
- throw new SodiumException('Unexpected error reading from file.');
- }
- /** @var string $message */
- /** @psalm-suppress InvalidArgument */
- self::hash_update($hash, $message);
- }
- // Reset file pointer's position
- fseek($fp, $originalPosition, SEEK_SET);
- return $hash;
- }
-
- /**
- * Sign a file (rather than a string). Uses less memory than
- * ParagonIE_Sodium_Compat::crypto_sign_detached(), but produces
- * the same result. (32-bit)
- *
- * @param string $filePath Absolute path to a file on the filesystem
- * @param string $secretKey Secret signing key
- *
- * @return string Ed25519 signature
- * @throws SodiumException
- * @throws TypeError
- */
- private static function sign_core32($filePath, $secretKey)
- {
- /** @var int|bool $size */
- $size = filesize($filePath);
- if (!is_int($size)) {
- throw new SodiumException('Could not obtain the file size');
- }
- /** @var int $size */
-
- /** @var resource|bool $fp */
- $fp = fopen($filePath, 'rb');
- if (!is_resource($fp)) {
- throw new SodiumException('Could not open input file for reading');
- }
- /** @var resource $fp */
-
- /** @var string $az */
- $az = hash('sha512', self::substr($secretKey, 0, 32), true);
-
- $az[0] = self::intToChr(self::chrToInt($az[0]) & 248);
- $az[31] = self::intToChr((self::chrToInt($az[31]) & 63) | 64);
-
- $hs = hash_init('sha512');
- self::hash_update($hs, self::substr($az, 32, 32));
- /** @var resource $hs */
- $hs = self::updateHashWithFile($hs, $fp, $size);
-
- /** @var string $nonceHash */
- $nonceHash = hash_final($hs, true);
-
- /** @var string $pk */
- $pk = self::substr($secretKey, 32, 32);
-
- /** @var string $nonce */
- $nonce = ParagonIE_Sodium_Core32_Ed25519::sc_reduce($nonceHash) . self::substr($nonceHash, 32);
-
- /** @var string $sig */
- $sig = ParagonIE_Sodium_Core32_Ed25519::ge_p3_tobytes(
- ParagonIE_Sodium_Core32_Ed25519::ge_scalarmult_base($nonce)
- );
-
- $hs = hash_init('sha512');
- self::hash_update($hs, self::substr($sig, 0, 32));
- self::hash_update($hs, self::substr($pk, 0, 32));
- /** @var resource $hs */
- $hs = self::updateHashWithFile($hs, $fp, $size);
-
- /** @var string $hramHash */
- $hramHash = hash_final($hs, true);
-
- /** @var string $hram */
- $hram = ParagonIE_Sodium_Core32_Ed25519::sc_reduce($hramHash);
-
- /** @var string $sigAfter */
- $sigAfter = ParagonIE_Sodium_Core32_Ed25519::sc_muladd($hram, $az, $nonce);
-
- /** @var string $sig */
- $sig = self::substr($sig, 0, 32) . self::substr($sigAfter, 0, 32);
-
- try {
- ParagonIE_Sodium_Compat::memzero($az);
- } catch (SodiumException $ex) {
- $az = null;
- }
- fclose($fp);
- return $sig;
- }
-
- /**
- *
- * Verify a file (rather than a string). Uses less memory than
- * ParagonIE_Sodium_Compat::crypto_sign_verify_detached(), but
- * produces the same result. (32-bit)
- *
- * @param string $sig Ed25519 signature
- * @param string $filePath Absolute path to a file on the filesystem
- * @param string $publicKey Signing public key
- *
- * @return bool
- * @throws SodiumException
- * @throws Exception
- */
- public static function verify_core32($sig, $filePath, $publicKey)
- {
- /* Security checks */
- if (ParagonIE_Sodium_Core32_Ed25519::check_S_lt_L(self::substr($sig, 32, 32))) {
- throw new SodiumException('S < L - Invalid signature');
- }
- if (ParagonIE_Sodium_Core32_Ed25519::small_order($sig)) {
- throw new SodiumException('Signature is on too small of an order');
- }
- if ((self::chrToInt($sig[63]) & 224) !== 0) {
- throw new SodiumException('Invalid signature');
- }
- $d = 0;
- for ($i = 0; $i < 32; ++$i) {
- $d |= self::chrToInt($publicKey[$i]);
- }
- if ($d === 0) {
- throw new SodiumException('All zero public key');
- }
-
- /** @var int|bool $size */
- $size = filesize($filePath);
- if (!is_int($size)) {
- throw new SodiumException('Could not obtain the file size');
- }
- /** @var int $size */
-
- /** @var resource|bool $fp */
- $fp = fopen($filePath, 'rb');
- if (!is_resource($fp)) {
- throw new SodiumException('Could not open input file for reading');
- }
- /** @var resource $fp */
-
- /** @var bool The original value of ParagonIE_Sodium_Compat::$fastMult */
- $orig = ParagonIE_Sodium_Compat::$fastMult;
-
- // Set ParagonIE_Sodium_Compat::$fastMult to true to speed up verification.
- ParagonIE_Sodium_Compat::$fastMult = true;
-
- /** @var ParagonIE_Sodium_Core32_Curve25519_Ge_P3 $A */
- $A = ParagonIE_Sodium_Core32_Ed25519::ge_frombytes_negate_vartime($publicKey);
-
- $hs = hash_init('sha512');
- self::hash_update($hs, self::substr($sig, 0, 32));
- self::hash_update($hs, self::substr($publicKey, 0, 32));
- /** @var resource $hs */
- $hs = self::updateHashWithFile($hs, $fp, $size);
- /** @var string $hDigest */
- $hDigest = hash_final($hs, true);
-
- /** @var string $h */
- $h = ParagonIE_Sodium_Core32_Ed25519::sc_reduce($hDigest) . self::substr($hDigest, 32);
-
- /** @var ParagonIE_Sodium_Core32_Curve25519_Ge_P2 $R */
- $R = ParagonIE_Sodium_Core32_Ed25519::ge_double_scalarmult_vartime(
- $h,
- $A,
- self::substr($sig, 32)
- );
-
- /** @var string $rcheck */
- $rcheck = ParagonIE_Sodium_Core32_Ed25519::ge_tobytes($R);
-
- // Close the file handle
- fclose($fp);
-
- // Reset ParagonIE_Sodium_Compat::$fastMult to what it was before.
- ParagonIE_Sodium_Compat::$fastMult = $orig;
- return self::verify_32($rcheck, self::substr($sig, 0, 32));
- }
-
- /**
- * Encrypt a file (32-bit)
- *
- * @param resource $ifp
- * @param resource $ofp
- * @param int $mlen
- * @param string $nonce
- * @param string $key
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- protected static function secretbox_encrypt_core32($ifp, $ofp, $mlen, $nonce, $key)
- {
- $plaintext = fread($ifp, 32);
- if (!is_string($plaintext)) {
- throw new SodiumException('Could not read input file');
- }
- $first32 = self::ftell($ifp);
-
- /** @var string $subkey */
- $subkey = ParagonIE_Sodium_Core32_HSalsa20::hsalsa20($nonce, $key);
-
- /** @var string $realNonce */
- $realNonce = ParagonIE_Sodium_Core32_Util::substr($nonce, 16, 8);
-
- /** @var string $block0 */
- $block0 = str_repeat("\x00", 32);
-
- /** @var int $mlen - Length of the plaintext message */
- $mlen0 = $mlen;
- if ($mlen0 > 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES) {
- $mlen0 = 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES;
- }
- $block0 .= ParagonIE_Sodium_Core32_Util::substr($plaintext, 0, $mlen0);
-
- /** @var string $block0 */
- $block0 = ParagonIE_Sodium_Core32_Salsa20::salsa20_xor(
- $block0,
- $realNonce,
- $subkey
- );
-
- $state = new ParagonIE_Sodium_Core32_Poly1305_State(
- ParagonIE_Sodium_Core32_Util::substr(
- $block0,
- 0,
- ParagonIE_Sodium_Crypto::onetimeauth_poly1305_KEYBYTES
- )
- );
-
- // Pre-write 16 blank bytes for the Poly1305 tag
- $start = self::ftell($ofp);
- fwrite($ofp, str_repeat("\x00", 16));
-
- /** @var string $c */
- $cBlock = ParagonIE_Sodium_Core32_Util::substr(
- $block0,
- ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES
- );
- $state->update($cBlock);
- fwrite($ofp, $cBlock);
- $mlen -= 32;
-
- /** @var int $iter */
- $iter = 1;
-
- /** @var int $incr */
- $incr = self::BUFFER_SIZE >> 6;
-
- /*
- * Set the cursor to the end of the first half-block. All future bytes will
- * generated from salsa20_xor_ic, starting from 1 (second block).
- */
- fseek($ifp, $first32, SEEK_SET);
-
- while ($mlen > 0) {
- $blockSize = $mlen > self::BUFFER_SIZE
- ? self::BUFFER_SIZE
- : $mlen;
- $plaintext = fread($ifp, $blockSize);
- if (!is_string($plaintext)) {
- throw new SodiumException('Could not read input file');
- }
- $cBlock = ParagonIE_Sodium_Core32_Salsa20::salsa20_xor_ic(
- $plaintext,
- $realNonce,
- $iter,
- $subkey
- );
- fwrite($ofp, $cBlock, $blockSize);
- $state->update($cBlock);
-
- $mlen -= $blockSize;
- $iter += $incr;
- }
- try {
- ParagonIE_Sodium_Compat::memzero($block0);
- ParagonIE_Sodium_Compat::memzero($subkey);
- } catch (SodiumException $ex) {
- $block0 = null;
- $subkey = null;
- }
- $end = self::ftell($ofp);
-
- /*
- * Write the Poly1305 authentication tag that provides integrity
- * over the ciphertext (encrypt-then-MAC)
- */
- fseek($ofp, $start, SEEK_SET);
- fwrite($ofp, $state->finish(), ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_MACBYTES);
- fseek($ofp, $end, SEEK_SET);
- unset($state);
-
- return true;
- }
-
- /**
- * Decrypt a file (32-bit)
- *
- * @param resource $ifp
- * @param resource $ofp
- * @param int $mlen
- * @param string $nonce
- * @param string $key
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- protected static function secretbox_decrypt_core32($ifp, $ofp, $mlen, $nonce, $key)
- {
- $tag = fread($ifp, 16);
- if (!is_string($tag)) {
- throw new SodiumException('Could not read input file');
- }
-
- /** @var string $subkey */
- $subkey = ParagonIE_Sodium_Core32_HSalsa20::hsalsa20($nonce, $key);
-
- /** @var string $realNonce */
- $realNonce = ParagonIE_Sodium_Core32_Util::substr($nonce, 16, 8);
-
- /** @var string $block0 */
- $block0 = ParagonIE_Sodium_Core32_Salsa20::salsa20(
- 64,
- ParagonIE_Sodium_Core32_Util::substr($nonce, 16, 8),
- $subkey
- );
-
- /* Verify the Poly1305 MAC -before- attempting to decrypt! */
- $state = new ParagonIE_Sodium_Core32_Poly1305_State(self::substr($block0, 0, 32));
- if (!self::onetimeauth_verify_core32($state, $ifp, $tag, $mlen)) {
- throw new SodiumException('Invalid MAC');
- }
-
- /*
- * Set the cursor to the end of the first half-block. All future bytes will
- * generated from salsa20_xor_ic, starting from 1 (second block).
- */
- $first32 = fread($ifp, 32);
- if (!is_string($first32)) {
- throw new SodiumException('Could not read input file');
- }
- $first32len = self::strlen($first32);
- fwrite(
- $ofp,
- self::xorStrings(
- self::substr($block0, 32, $first32len),
- self::substr($first32, 0, $first32len)
- )
- );
- $mlen -= 32;
-
- /** @var int $iter */
- $iter = 1;
-
- /** @var int $incr */
- $incr = self::BUFFER_SIZE >> 6;
-
- /* Decrypts ciphertext, writes to output file. */
- while ($mlen > 0) {
- $blockSize = $mlen > self::BUFFER_SIZE
- ? self::BUFFER_SIZE
- : $mlen;
- $ciphertext = fread($ifp, $blockSize);
- if (!is_string($ciphertext)) {
- throw new SodiumException('Could not read input file');
- }
- $pBlock = ParagonIE_Sodium_Core32_Salsa20::salsa20_xor_ic(
- $ciphertext,
- $realNonce,
- $iter,
- $subkey
- );
- fwrite($ofp, $pBlock, $blockSize);
- $mlen -= $blockSize;
- $iter += $incr;
- }
- return true;
- }
-
- /**
- * One-time message authentication for 32-bit systems
- *
- * @param ParagonIE_Sodium_Core32_Poly1305_State $state
- * @param resource $ifp
- * @param string $tag
- * @param int $mlen
- * @return bool
- * @throws SodiumException
- * @throws TypeError
- */
- protected static function onetimeauth_verify_core32(
- ParagonIE_Sodium_Core32_Poly1305_State $state,
- $ifp,
- $tag = '',
- $mlen = 0
- ) {
- /** @var int $pos */
- $pos = self::ftell($ifp);
-
- while ($mlen > 0) {
- $blockSize = $mlen > self::BUFFER_SIZE
- ? self::BUFFER_SIZE
- : $mlen;
- $ciphertext = fread($ifp, $blockSize);
- if (!is_string($ciphertext)) {
- throw new SodiumException('Could not read input file');
- }
- $state->update($ciphertext);
- $mlen -= $blockSize;
- }
- $res = ParagonIE_Sodium_Core32_Util::verify_16($tag, $state->finish());
-
- fseek($ifp, $pos, SEEK_SET);
- return $res;
- }
-
- /**
- * @param resource $resource
- * @return int
- * @throws SodiumException
- */
- private static function ftell($resource)
- {
- $return = ftell($resource);
- if (!is_int($return)) {
- throw new SodiumException('ftell() returned false');
- }
- return (int) $return;
- }
-}
+<?php + +if (class_exists('ParagonIE_Sodium_File', false)) { + return; +} +/** + * Class ParagonIE_Sodium_File + */ +class ParagonIE_Sodium_File extends ParagonIE_Sodium_Core_Util +{ + /* PHP's default buffer size is 8192 for fread()/fwrite(). */ + const BUFFER_SIZE = 8192; + + /** + * Box a file (rather than a string). Uses less memory than + * ParagonIE_Sodium_Compat::crypto_box(), but produces + * the same result. + * + * @param string $inputFile Absolute path to a file on the filesystem + * @param string $outputFile Absolute path to a file on the filesystem + * @param string $nonce Number to be used only once + * @param string $keyPair ECDH secret key and ECDH public key concatenated + * + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function box($inputFile, $outputFile, $nonce, $keyPair) + { + /* Type checks: */ + if (!is_string($inputFile)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.'); + } + if (!is_string($outputFile)) { + throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.'); + } + if (!is_string($nonce)) { + throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.'); + } + + /* Input validation: */ + if (!is_string($keyPair)) { + throw new TypeError('Argument 4 must be a string, ' . gettype($keyPair) . ' given.'); + } + if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_NONCEBYTES) { + throw new TypeError('Argument 3 must be CRYPTO_BOX_NONCEBYTES bytes'); + } + if (self::strlen($keyPair) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES) { + throw new TypeError('Argument 4 must be CRYPTO_BOX_KEYPAIRBYTES bytes'); + } + + /** @var int $size */ + $size = filesize($inputFile); + if (!is_int($size)) { + throw new SodiumException('Could not obtain the file size'); + } + + /** @var resource $ifp */ + $ifp = fopen($inputFile, 'rb'); + if (!is_resource($ifp)) { + throw new SodiumException('Could not open input file for reading'); + } + + /** @var resource $ofp */ + $ofp = fopen($outputFile, 'wb'); + if (!is_resource($ofp)) { + fclose($ifp); + throw new SodiumException('Could not open output file for writing'); + } + + $res = self::box_encrypt($ifp, $ofp, $size, $nonce, $keyPair); + fclose($ifp); + fclose($ofp); + return $res; + } + + /** + * Open a boxed file (rather than a string). Uses less memory than + * ParagonIE_Sodium_Compat::crypto_box_open(), but produces + * the same result. + * + * Warning: Does not protect against TOCTOU attacks. You should + * just load the file into memory and use crypto_box_open() if + * you are worried about those. + * + * @param string $inputFile + * @param string $outputFile + * @param string $nonce + * @param string $keypair + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function box_open($inputFile, $outputFile, $nonce, $keypair) + { + /* Type checks: */ + if (!is_string($inputFile)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.'); + } + if (!is_string($outputFile)) { + throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.'); + } + if (!is_string($nonce)) { + throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.'); + } + if (!is_string($keypair)) { + throw new TypeError('Argument 4 must be a string, ' . gettype($keypair) . ' given.'); + } + + /* Input validation: */ + if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_NONCEBYTES) { + throw new TypeError('Argument 4 must be CRYPTO_BOX_NONCEBYTES bytes'); + } + if (self::strlen($keypair) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES) { + throw new TypeError('Argument 4 must be CRYPTO_BOX_KEYPAIRBYTES bytes'); + } + + /** @var int $size */ + $size = filesize($inputFile); + if (!is_int($size)) { + throw new SodiumException('Could not obtain the file size'); + } + + /** @var resource $ifp */ + $ifp = fopen($inputFile, 'rb'); + if (!is_resource($ifp)) { + throw new SodiumException('Could not open input file for reading'); + } + + /** @var resource $ofp */ + $ofp = fopen($outputFile, 'wb'); + if (!is_resource($ofp)) { + fclose($ifp); + throw new SodiumException('Could not open output file for writing'); + } + + $res = self::box_decrypt($ifp, $ofp, $size, $nonce, $keypair); + fclose($ifp); + fclose($ofp); + try { + ParagonIE_Sodium_Compat::memzero($nonce); + ParagonIE_Sodium_Compat::memzero($ephKeypair); + } catch (SodiumException $ex) { + if (isset($ephKeypair)) { + unset($ephKeypair); + } + } + return $res; + } + + /** + * Seal a file (rather than a string). Uses less memory than + * ParagonIE_Sodium_Compat::crypto_box_seal(), but produces + * the same result. + * + * @param string $inputFile Absolute path to a file on the filesystem + * @param string $outputFile Absolute path to a file on the filesystem + * @param string $publicKey ECDH public key + * + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function box_seal($inputFile, $outputFile, $publicKey) + { + /* Type checks: */ + if (!is_string($inputFile)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.'); + } + if (!is_string($outputFile)) { + throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.'); + } + if (!is_string($publicKey)) { + throw new TypeError('Argument 3 must be a string, ' . gettype($publicKey) . ' given.'); + } + + /* Input validation: */ + if (self::strlen($publicKey) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES) { + throw new TypeError('Argument 3 must be CRYPTO_BOX_PUBLICKEYBYTES bytes'); + } + + /** @var int $size */ + $size = filesize($inputFile); + if (!is_int($size)) { + throw new SodiumException('Could not obtain the file size'); + } + + /** @var resource $ifp */ + $ifp = fopen($inputFile, 'rb'); + if (!is_resource($ifp)) { + throw new SodiumException('Could not open input file for reading'); + } + + /** @var resource $ofp */ + $ofp = fopen($outputFile, 'wb'); + if (!is_resource($ofp)) { + fclose($ifp); + throw new SodiumException('Could not open output file for writing'); + } + + /** @var string $ephKeypair */ + $ephKeypair = ParagonIE_Sodium_Compat::crypto_box_keypair(); + + /** @var string $msgKeypair */ + $msgKeypair = ParagonIE_Sodium_Compat::crypto_box_keypair_from_secretkey_and_publickey( + ParagonIE_Sodium_Compat::crypto_box_secretkey($ephKeypair), + $publicKey + ); + + /** @var string $ephemeralPK */ + $ephemeralPK = ParagonIE_Sodium_Compat::crypto_box_publickey($ephKeypair); + + /** @var string $nonce */ + $nonce = ParagonIE_Sodium_Compat::crypto_generichash( + $ephemeralPK . $publicKey, + '', + 24 + ); + + /** @var int $firstWrite */ + $firstWrite = fwrite( + $ofp, + $ephemeralPK, + ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES + ); + if (!is_int($firstWrite)) { + fclose($ifp); + fclose($ofp); + ParagonIE_Sodium_Compat::memzero($ephKeypair); + throw new SodiumException('Could not write to output file'); + } + if ($firstWrite !== ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES) { + ParagonIE_Sodium_Compat::memzero($ephKeypair); + fclose($ifp); + fclose($ofp); + throw new SodiumException('Error writing public key to output file'); + } + + $res = self::box_encrypt($ifp, $ofp, $size, $nonce, $msgKeypair); + fclose($ifp); + fclose($ofp); + try { + ParagonIE_Sodium_Compat::memzero($nonce); + ParagonIE_Sodium_Compat::memzero($ephKeypair); + } catch (SodiumException $ex) { + /** @psalm-suppress PossiblyUndefinedVariable */ + unset($ephKeypair); + } + return $res; + } + + /** + * Open a sealed file (rather than a string). Uses less memory than + * ParagonIE_Sodium_Compat::crypto_box_seal_open(), but produces + * the same result. + * + * Warning: Does not protect against TOCTOU attacks. You should + * just load the file into memory and use crypto_box_seal_open() if + * you are worried about those. + * + * @param string $inputFile + * @param string $outputFile + * @param string $ecdhKeypair + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function box_seal_open($inputFile, $outputFile, $ecdhKeypair) + { + /* Type checks: */ + if (!is_string($inputFile)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.'); + } + if (!is_string($outputFile)) { + throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.'); + } + if (!is_string($ecdhKeypair)) { + throw new TypeError('Argument 3 must be a string, ' . gettype($ecdhKeypair) . ' given.'); + } + + /* Input validation: */ + if (self::strlen($ecdhKeypair) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES) { + throw new TypeError('Argument 3 must be CRYPTO_BOX_KEYPAIRBYTES bytes'); + } + + $publicKey = ParagonIE_Sodium_Compat::crypto_box_publickey($ecdhKeypair); + + /** @var int $size */ + $size = filesize($inputFile); + if (!is_int($size)) { + throw new SodiumException('Could not obtain the file size'); + } + + /** @var resource $ifp */ + $ifp = fopen($inputFile, 'rb'); + if (!is_resource($ifp)) { + throw new SodiumException('Could not open input file for reading'); + } + + /** @var resource $ofp */ + $ofp = fopen($outputFile, 'wb'); + if (!is_resource($ofp)) { + fclose($ifp); + throw new SodiumException('Could not open output file for writing'); + } + + $ephemeralPK = fread($ifp, ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES); + if (!is_string($ephemeralPK)) { + throw new SodiumException('Could not read input file'); + } + if (self::strlen($ephemeralPK) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES) { + fclose($ifp); + fclose($ofp); + throw new SodiumException('Could not read public key from sealed file'); + } + + $nonce = ParagonIE_Sodium_Compat::crypto_generichash( + $ephemeralPK . $publicKey, + '', + 24 + ); + $msgKeypair = ParagonIE_Sodium_Compat::crypto_box_keypair_from_secretkey_and_publickey( + ParagonIE_Sodium_Compat::crypto_box_secretkey($ecdhKeypair), + $ephemeralPK + ); + + $res = self::box_decrypt($ifp, $ofp, $size, $nonce, $msgKeypair); + fclose($ifp); + fclose($ofp); + try { + ParagonIE_Sodium_Compat::memzero($nonce); + ParagonIE_Sodium_Compat::memzero($ephKeypair); + } catch (SodiumException $ex) { + if (isset($ephKeypair)) { + unset($ephKeypair); + } + } + return $res; + } + + /** + * Calculate the BLAKE2b hash of a file. + * + * @param string $filePath Absolute path to a file on the filesystem + * @param string|null $key BLAKE2b key + * @param int $outputLength Length of hash output + * + * @return string BLAKE2b hash + * @throws SodiumException + * @throws TypeError + * @psalm-suppress FailedTypeResolution + */ + public static function generichash($filePath, $key = '', $outputLength = 32) + { + /* Type checks: */ + if (!is_string($filePath)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($filePath) . ' given.'); + } + if (!is_string($key)) { + if (is_null($key)) { + $key = ''; + } else { + throw new TypeError('Argument 2 must be a string, ' . gettype($key) . ' given.'); + } + } + if (!is_int($outputLength)) { + if (!is_numeric($outputLength)) { + throw new TypeError('Argument 3 must be an integer, ' . gettype($outputLength) . ' given.'); + } + $outputLength = (int) $outputLength; + } + + /* Input validation: */ + if (!empty($key)) { + if (self::strlen($key) < ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_KEYBYTES_MIN) { + throw new TypeError('Argument 2 must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes'); + } + if (self::strlen($key) > ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_KEYBYTES_MAX) { + throw new TypeError('Argument 2 must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes'); + } + } + if ($outputLength < ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_BYTES_MIN) { + throw new SodiumException('Argument 3 must be at least CRYPTO_GENERICHASH_BYTES_MIN'); + } + if ($outputLength > ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_BYTES_MAX) { + throw new SodiumException('Argument 3 must be at least CRYPTO_GENERICHASH_BYTES_MAX'); + } + + /** @var int $size */ + $size = filesize($filePath); + if (!is_int($size)) { + throw new SodiumException('Could not obtain the file size'); + } + + /** @var resource $fp */ + $fp = fopen($filePath, 'rb'); + if (!is_resource($fp)) { + throw new SodiumException('Could not open input file for reading'); + } + $ctx = ParagonIE_Sodium_Compat::crypto_generichash_init($key, $outputLength); + while ($size > 0) { + $blockSize = $size > 64 + ? 64 + : $size; + $read = fread($fp, $blockSize); + if (!is_string($read)) { + throw new SodiumException('Could not read input file'); + } + ParagonIE_Sodium_Compat::crypto_generichash_update($ctx, $read); + $size -= $blockSize; + } + + fclose($fp); + return ParagonIE_Sodium_Compat::crypto_generichash_final($ctx, $outputLength); + } + + /** + * Encrypt a file (rather than a string). Uses less memory than + * ParagonIE_Sodium_Compat::crypto_secretbox(), but produces + * the same result. + * + * @param string $inputFile Absolute path to a file on the filesystem + * @param string $outputFile Absolute path to a file on the filesystem + * @param string $nonce Number to be used only once + * @param string $key Encryption key + * + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function secretbox($inputFile, $outputFile, $nonce, $key) + { + /* Type checks: */ + if (!is_string($inputFile)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given..'); + } + if (!is_string($outputFile)) { + throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.'); + } + if (!is_string($nonce)) { + throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.'); + } + + /* Input validation: */ + if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_NONCEBYTES) { + throw new TypeError('Argument 3 must be CRYPTO_SECRETBOX_NONCEBYTES bytes'); + } + if (!is_string($key)) { + throw new TypeError('Argument 4 must be a string, ' . gettype($key) . ' given.'); + } + if (self::strlen($key) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_KEYBYTES) { + throw new TypeError('Argument 4 must be CRYPTO_SECRETBOX_KEYBYTES bytes'); + } + + /** @var int $size */ + $size = filesize($inputFile); + if (!is_int($size)) { + throw new SodiumException('Could not obtain the file size'); + } + + /** @var resource $ifp */ + $ifp = fopen($inputFile, 'rb'); + if (!is_resource($ifp)) { + throw new SodiumException('Could not open input file for reading'); + } + + /** @var resource $ofp */ + $ofp = fopen($outputFile, 'wb'); + if (!is_resource($ofp)) { + fclose($ifp); + throw new SodiumException('Could not open output file for writing'); + } + + $res = self::secretbox_encrypt($ifp, $ofp, $size, $nonce, $key); + fclose($ifp); + fclose($ofp); + return $res; + } + /** + * Seal a file (rather than a string). Uses less memory than + * ParagonIE_Sodium_Compat::crypto_secretbox_open(), but produces + * the same result. + * + * Warning: Does not protect against TOCTOU attacks. You should + * just load the file into memory and use crypto_secretbox_open() if + * you are worried about those. + * + * @param string $inputFile + * @param string $outputFile + * @param string $nonce + * @param string $key + * @return bool + * @throws SodiumException + * @throws TypeError + */ + public static function secretbox_open($inputFile, $outputFile, $nonce, $key) + { + /* Type checks: */ + if (!is_string($inputFile)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.'); + } + if (!is_string($outputFile)) { + throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.'); + } + if (!is_string($nonce)) { + throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.'); + } + if (!is_string($key)) { + throw new TypeError('Argument 4 must be a string, ' . gettype($key) . ' given.'); + } + + /* Input validation: */ + if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_NONCEBYTES) { + throw new TypeError('Argument 4 must be CRYPTO_SECRETBOX_NONCEBYTES bytes'); + } + if (self::strlen($key) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_KEYBYTES) { + throw new TypeError('Argument 4 must be CRYPTO_SECRETBOXBOX_KEYBYTES bytes'); + } + + /** @var int $size */ + $size = filesize($inputFile); + if (!is_int($size)) { + throw new SodiumException('Could not obtain the file size'); + } + + /** @var resource $ifp */ + $ifp = fopen($inputFile, 'rb'); + if (!is_resource($ifp)) { + throw new SodiumException('Could not open input file for reading'); + } + + /** @var resource $ofp */ + $ofp = fopen($outputFile, 'wb'); + if (!is_resource($ofp)) { + fclose($ifp); + throw new SodiumException('Could not open output file for writing'); + } + + $res = self::secretbox_decrypt($ifp, $ofp, $size, $nonce, $key); + fclose($ifp); + fclose($ofp); + try { + ParagonIE_Sodium_Compat::memzero($key); + } catch (SodiumException $ex) { + /** @psalm-suppress PossiblyUndefinedVariable */ + unset($key); + } + return $res; + } + + /** + * Sign a file (rather than a string). Uses less memory than + * ParagonIE_Sodium_Compat::crypto_sign_detached(), but produces + * the same result. + * + * @param string $filePath Absolute path to a file on the filesystem + * @param string $secretKey Secret signing key + * + * @return string Ed25519 signature + * @throws SodiumException + * @throws TypeError + */ + public static function sign($filePath, $secretKey) + { + /* Type checks: */ + if (!is_string($filePath)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($filePath) . ' given.'); + } + if (!is_string($secretKey)) { + throw new TypeError('Argument 2 must be a string, ' . gettype($secretKey) . ' given.'); + } + + /* Input validation: */ + if (self::strlen($secretKey) !== ParagonIE_Sodium_Compat::CRYPTO_SIGN_SECRETKEYBYTES) { + throw new TypeError('Argument 2 must be CRYPTO_SIGN_SECRETKEYBYTES bytes'); + } + if (PHP_INT_SIZE === 4) { + return self::sign_core32($filePath, $secretKey); + } + + /** @var int $size */ + $size = filesize($filePath); + if (!is_int($size)) { + throw new SodiumException('Could not obtain the file size'); + } + + /** @var resource $fp */ + $fp = fopen($filePath, 'rb'); + if (!is_resource($fp)) { + throw new SodiumException('Could not open input file for reading'); + } + + /** @var string $az */ + $az = hash('sha512', self::substr($secretKey, 0, 32), true); + + $az[0] = self::intToChr(self::chrToInt($az[0]) & 248); + $az[31] = self::intToChr((self::chrToInt($az[31]) & 63) | 64); + + $hs = hash_init('sha512'); + self::hash_update($hs, self::substr($az, 32, 32)); + /** @var resource $hs */ + $hs = self::updateHashWithFile($hs, $fp, $size); + + /** @var string $nonceHash */ + $nonceHash = hash_final($hs, true); + + /** @var string $pk */ + $pk = self::substr($secretKey, 32, 32); + + /** @var string $nonce */ + $nonce = ParagonIE_Sodium_Core_Ed25519::sc_reduce($nonceHash) . self::substr($nonceHash, 32); + + /** @var string $sig */ + $sig = ParagonIE_Sodium_Core_Ed25519::ge_p3_tobytes( + ParagonIE_Sodium_Core_Ed25519::ge_scalarmult_base($nonce) + ); + + $hs = hash_init('sha512'); + self::hash_update($hs, self::substr($sig, 0, 32)); + self::hash_update($hs, self::substr($pk, 0, 32)); + /** @var resource $hs */ + $hs = self::updateHashWithFile($hs, $fp, $size); + + /** @var string $hramHash */ + $hramHash = hash_final($hs, true); + + /** @var string $hram */ + $hram = ParagonIE_Sodium_Core_Ed25519::sc_reduce($hramHash); + + /** @var string $sigAfter */ + $sigAfter = ParagonIE_Sodium_Core_Ed25519::sc_muladd($hram, $az, $nonce); + + /** @var string $sig */ + $sig = self::substr($sig, 0, 32) . self::substr($sigAfter, 0, 32); + + try { + ParagonIE_Sodium_Compat::memzero($az); + } catch (SodiumException $ex) { + $az = null; + } + fclose($fp); + return $sig; + } + + /** + * Verify a file (rather than a string). Uses less memory than + * ParagonIE_Sodium_Compat::crypto_sign_verify_detached(), but + * produces the same result. + * + * @param string $sig Ed25519 signature + * @param string $filePath Absolute path to a file on the filesystem + * @param string $publicKey Signing public key + * + * @return bool + * @throws SodiumException + * @throws TypeError + * @throws Exception + */ + public static function verify($sig, $filePath, $publicKey) + { + /* Type checks: */ + if (!is_string($sig)) { + throw new TypeError('Argument 1 must be a string, ' . gettype($sig) . ' given.'); + } + if (!is_string($filePath)) { + throw new TypeError('Argument 2 must be a string, ' . gettype($filePath) . ' given.'); + } + if (!is_string($publicKey)) { + throw new TypeError('Argument 3 must be a string, ' . gettype($publicKey) . ' given.'); + } + + /* Input validation: */ + if (self::strlen($sig) !== ParagonIE_Sodium_Compat::CRYPTO_SIGN_BYTES) { + throw new TypeError('Argument 1 must be CRYPTO_SIGN_BYTES bytes'); + } + if (self::strlen($publicKey) !== ParagonIE_Sodium_Compat::CRYPTO_SIGN_PUBLICKEYBYTES) { + throw new TypeError('Argument 3 must be CRYPTO_SIGN_PUBLICKEYBYTES bytes'); + } + if (self::strlen($sig) < 64) { + throw new SodiumException('Signature is too short'); + } + + if (PHP_INT_SIZE === 4) { + return self::verify_core32($sig, $filePath, $publicKey); + } + + /* Security checks */ + if ( + (ParagonIE_Sodium_Core_Ed25519::chrToInt($sig[63]) & 240) + && + ParagonIE_Sodium_Core_Ed25519::check_S_lt_L(self::substr($sig, 32, 32)) + ) { + throw new SodiumException('S < L - Invalid signature'); + } + if (ParagonIE_Sodium_Core_Ed25519::small_order($sig)) { + throw new SodiumException('Signature is on too small of an order'); + } + if ((self::chrToInt($sig[63]) & 224) !== 0) { + throw new SodiumException('Invalid signature'); + } + $d = 0; + for ($i = 0; $i < 32; ++$i) { + $d |= self::chrToInt($publicKey[$i]); + } + if ($d === 0) { + throw new SodiumException('All zero public key'); + } + + /** @var int $size */ + $size = filesize($filePath); + if (!is_int($size)) { + throw new SodiumException('Could not obtain the file size'); + } + + /** @var resource $fp */ + $fp = fopen($filePath, 'rb'); + if (!is_resource($fp)) { + throw new SodiumException('Could not open input file for reading'); + } + + /** @var bool The original value of ParagonIE_Sodium_Compat::$fastMult */ + $orig = ParagonIE_Sodium_Compat::$fastMult; + + // Set ParagonIE_Sodium_Compat::$fastMult to true to speed up verification. + ParagonIE_Sodium_Compat::$fastMult = true; + + /** @var ParagonIE_Sodium_Core_Curve25519_Ge_P3 $A */ + $A = ParagonIE_Sodium_Core_Ed25519::ge_frombytes_negate_vartime($publicKey); + + $hs = hash_init('sha512'); + self::hash_update($hs, self::substr($sig, 0, 32)); + self::hash_update($hs, self::substr($publicKey, 0, 32)); + /** @var resource $hs */ + $hs = self::updateHashWithFile($hs, $fp, $size); + /** @var string $hDigest */ + $hDigest = hash_final($hs, true); + + /** @var string $h */ + $h = ParagonIE_Sodium_Core_Ed25519::sc_reduce($hDigest) . self::substr($hDigest, 32); + + /** @var ParagonIE_Sodium_Core_Curve25519_Ge_P2 $R */ + $R = ParagonIE_Sodium_Core_Ed25519::ge_double_scalarmult_vartime( + $h, + $A, + self::substr($sig, 32) + ); + + /** @var string $rcheck */ + $rcheck = ParagonIE_Sodium_Core_Ed25519::ge_tobytes($R); + + // Close the file handle + fclose($fp); + + // Reset ParagonIE_Sodium_Compat::$fastMult to what it was before. + ParagonIE_Sodium_Compat::$fastMult = $orig; + return self::verify_32($rcheck, self::substr($sig, 0, 32)); + } + + /** + * @param resource $ifp + * @param resource $ofp + * @param int $mlen + * @param string $nonce + * @param string $boxKeypair + * @return bool + * @throws SodiumException + * @throws TypeError + */ + protected static function box_encrypt($ifp, $ofp, $mlen, $nonce, $boxKeypair) + { + if (PHP_INT_SIZE === 4) { + return self::secretbox_encrypt( + $ifp, + $ofp, + $mlen, + $nonce, + ParagonIE_Sodium_Crypto32::box_beforenm( + ParagonIE_Sodium_Crypto32::box_secretkey($boxKeypair), + ParagonIE_Sodium_Crypto32::box_publickey($boxKeypair) + ) + ); + } + return self::secretbox_encrypt( + $ifp, + $ofp, + $mlen, + $nonce, + ParagonIE_Sodium_Crypto::box_beforenm( + ParagonIE_Sodium_Crypto::box_secretkey($boxKeypair), + ParagonIE_Sodium_Crypto::box_publickey($boxKeypair) + ) + ); + } + + + /** + * @param resource $ifp + * @param resource $ofp + * @param int $mlen + * @param string $nonce + * @param string $boxKeypair + * @return bool + * @throws SodiumException + * @throws TypeError + */ + protected static function box_decrypt($ifp, $ofp, $mlen, $nonce, $boxKeypair) + { + if (PHP_INT_SIZE === 4) { + return self::secretbox_decrypt( + $ifp, + $ofp, + $mlen, + $nonce, + ParagonIE_Sodium_Crypto32::box_beforenm( + ParagonIE_Sodium_Crypto32::box_secretkey($boxKeypair), + ParagonIE_Sodium_Crypto32::box_publickey($boxKeypair) + ) + ); + } + return self::secretbox_decrypt( + $ifp, + $ofp, + $mlen, + $nonce, + ParagonIE_Sodium_Crypto::box_beforenm( + ParagonIE_Sodium_Crypto::box_secretkey($boxKeypair), + ParagonIE_Sodium_Crypto::box_publickey($boxKeypair) + ) + ); + } + + /** + * Encrypt a file + * + * @param resource $ifp + * @param resource $ofp + * @param int $mlen + * @param string $nonce + * @param string $key + * @return bool + * @throws SodiumException + * @throws TypeError + */ + protected static function secretbox_encrypt($ifp, $ofp, $mlen, $nonce, $key) + { + if (PHP_INT_SIZE === 4) { + return self::secretbox_encrypt_core32($ifp, $ofp, $mlen, $nonce, $key); + } + + $plaintext = fread($ifp, 32); + if (!is_string($plaintext)) { + throw new SodiumException('Could not read input file'); + } + $first32 = self::ftell($ifp); + + /** @var string $subkey */ + $subkey = ParagonIE_Sodium_Core_HSalsa20::hsalsa20($nonce, $key); + + /** @var string $realNonce */ + $realNonce = ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8); + + /** @var string $block0 */ + $block0 = str_repeat("\x00", 32); + + /** @var int $mlen - Length of the plaintext message */ + $mlen0 = $mlen; + if ($mlen0 > 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES) { + $mlen0 = 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES; + } + $block0 .= ParagonIE_Sodium_Core_Util::substr($plaintext, 0, $mlen0); + + /** @var string $block0 */ + $block0 = ParagonIE_Sodium_Core_Salsa20::salsa20_xor( + $block0, + $realNonce, + $subkey + ); + + $state = new ParagonIE_Sodium_Core_Poly1305_State( + ParagonIE_Sodium_Core_Util::substr( + $block0, + 0, + ParagonIE_Sodium_Crypto::onetimeauth_poly1305_KEYBYTES + ) + ); + + // Pre-write 16 blank bytes for the Poly1305 tag + $start = self::ftell($ofp); + fwrite($ofp, str_repeat("\x00", 16)); + + /** @var string $c */ + $cBlock = ParagonIE_Sodium_Core_Util::substr( + $block0, + ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES + ); + $state->update($cBlock); + fwrite($ofp, $cBlock); + $mlen -= 32; + + /** @var int $iter */ + $iter = 1; + + /** @var int $incr */ + $incr = self::BUFFER_SIZE >> 6; + + /* + * Set the cursor to the end of the first half-block. All future bytes will + * generated from salsa20_xor_ic, starting from 1 (second block). + */ + fseek($ifp, $first32, SEEK_SET); + + while ($mlen > 0) { + $blockSize = $mlen > self::BUFFER_SIZE + ? self::BUFFER_SIZE + : $mlen; + $plaintext = fread($ifp, $blockSize); + if (!is_string($plaintext)) { + throw new SodiumException('Could not read input file'); + } + $cBlock = ParagonIE_Sodium_Core_Salsa20::salsa20_xor_ic( + $plaintext, + $realNonce, + $iter, + $subkey + ); + fwrite($ofp, $cBlock, $blockSize); + $state->update($cBlock); + + $mlen -= $blockSize; + $iter += $incr; + } + try { + ParagonIE_Sodium_Compat::memzero($block0); + ParagonIE_Sodium_Compat::memzero($subkey); + } catch (SodiumException $ex) { + $block0 = null; + $subkey = null; + } + $end = self::ftell($ofp); + + /* + * Write the Poly1305 authentication tag that provides integrity + * over the ciphertext (encrypt-then-MAC) + */ + fseek($ofp, $start, SEEK_SET); + fwrite($ofp, $state->finish(), ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_MACBYTES); + fseek($ofp, $end, SEEK_SET); + unset($state); + + return true; + } + + /** + * Decrypt a file + * + * @param resource $ifp + * @param resource $ofp + * @param int $mlen + * @param string $nonce + * @param string $key + * @return bool + * @throws SodiumException + * @throws TypeError + */ + protected static function secretbox_decrypt($ifp, $ofp, $mlen, $nonce, $key) + { + if (PHP_INT_SIZE === 4) { + return self::secretbox_decrypt_core32($ifp, $ofp, $mlen, $nonce, $key); + } + $tag = fread($ifp, 16); + if (!is_string($tag)) { + throw new SodiumException('Could not read input file'); + } + + /** @var string $subkey */ + $subkey = ParagonIE_Sodium_Core_HSalsa20::hsalsa20($nonce, $key); + + /** @var string $realNonce */ + $realNonce = ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8); + + /** @var string $block0 */ + $block0 = ParagonIE_Sodium_Core_Salsa20::salsa20( + 64, + ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8), + $subkey + ); + + /* Verify the Poly1305 MAC -before- attempting to decrypt! */ + $state = new ParagonIE_Sodium_Core_Poly1305_State(self::substr($block0, 0, 32)); + if (!self::onetimeauth_verify($state, $ifp, $tag, $mlen)) { + throw new SodiumException('Invalid MAC'); + } + + /* + * Set the cursor to the end of the first half-block. All future bytes will + * generated from salsa20_xor_ic, starting from 1 (second block). + */ + $first32 = fread($ifp, 32); + if (!is_string($first32)) { + throw new SodiumException('Could not read input file'); + } + $first32len = self::strlen($first32); + fwrite( + $ofp, + self::xorStrings( + self::substr($block0, 32, $first32len), + self::substr($first32, 0, $first32len) + ) + ); + $mlen -= 32; + + /** @var int $iter */ + $iter = 1; + + /** @var int $incr */ + $incr = self::BUFFER_SIZE >> 6; + + /* Decrypts ciphertext, writes to output file. */ + while ($mlen > 0) { + $blockSize = $mlen > self::BUFFER_SIZE + ? self::BUFFER_SIZE + : $mlen; + $ciphertext = fread($ifp, $blockSize); + if (!is_string($ciphertext)) { + throw new SodiumException('Could not read input file'); + } + $pBlock = ParagonIE_Sodium_Core_Salsa20::salsa20_xor_ic( + $ciphertext, + $realNonce, + $iter, + $subkey + ); + fwrite($ofp, $pBlock, $blockSize); + $mlen -= $blockSize; + $iter += $incr; + } + return true; + } + + /** + * @param ParagonIE_Sodium_Core_Poly1305_State $state + * @param resource $ifp + * @param string $tag + * @param int $mlen + * @return bool + * @throws SodiumException + * @throws TypeError + */ + protected static function onetimeauth_verify( + ParagonIE_Sodium_Core_Poly1305_State $state, + $ifp, + $tag = '', + $mlen = 0 + ) { + /** @var int $pos */ + $pos = self::ftell($ifp); + + /** @var int $iter */ + $iter = 1; + + /** @var int $incr */ + $incr = self::BUFFER_SIZE >> 6; + + while ($mlen > 0) { + $blockSize = $mlen > self::BUFFER_SIZE + ? self::BUFFER_SIZE + : $mlen; + $ciphertext = fread($ifp, $blockSize); + if (!is_string($ciphertext)) { + throw new SodiumException('Could not read input file'); + } + $state->update($ciphertext); + $mlen -= $blockSize; + $iter += $incr; + } + $res = ParagonIE_Sodium_Core_Util::verify_16($tag, $state->finish()); + + fseek($ifp, $pos, SEEK_SET); + return $res; + } + + /** + * Update a hash context with the contents of a file, without + * loading the entire file into memory. + * + * @param resource|HashContext $hash + * @param resource $fp + * @param int $size + * @return resource|object Resource on PHP < 7.2, HashContext object on PHP >= 7.2 + * @throws SodiumException + * @throws TypeError + * @psalm-suppress PossiblyInvalidArgument + * PHP 7.2 changes from a resource to an object, + * which causes Psalm to complain about an error. + * @psalm-suppress TypeCoercion + * Ditto. + */ + public static function updateHashWithFile($hash, $fp, $size = 0) + { + /* Type checks: */ + if (PHP_VERSION_ID < 70200) { + if (!is_resource($hash)) { + throw new TypeError('Argument 1 must be a resource, ' . gettype($hash) . ' given.'); + } + } else { + if (!is_object($hash)) { + throw new TypeError('Argument 1 must be an object (PHP 7.2+), ' . gettype($hash) . ' given.'); + } + } + + if (!is_resource($fp)) { + throw new TypeError('Argument 2 must be a resource, ' . gettype($fp) . ' given.'); + } + if (!is_int($size)) { + throw new TypeError('Argument 3 must be an integer, ' . gettype($size) . ' given.'); + } + + /** @var int $originalPosition */ + $originalPosition = self::ftell($fp); + + // Move file pointer to beginning of file + fseek($fp, 0, SEEK_SET); + for ($i = 0; $i < $size; $i += self::BUFFER_SIZE) { + /** @var string|bool $message */ + $message = fread( + $fp, + ($size - $i) > self::BUFFER_SIZE + ? $size - $i + : self::BUFFER_SIZE + ); + if (!is_string($message)) { + throw new SodiumException('Unexpected error reading from file.'); + } + /** @var string $message */ + /** @psalm-suppress InvalidArgument */ + self::hash_update($hash, $message); + } + // Reset file pointer's position + fseek($fp, $originalPosition, SEEK_SET); + return $hash; + } + + /** + * Sign a file (rather than a string). Uses less memory than + * ParagonIE_Sodium_Compat::crypto_sign_detached(), but produces + * the same result. (32-bit) + * + * @param string $filePath Absolute path to a file on the filesystem + * @param string $secretKey Secret signing key + * + * @return string Ed25519 signature + * @throws SodiumException + * @throws TypeError + */ + private static function sign_core32($filePath, $secretKey) + { + $size = filesize($filePath); + if (!is_int($size)) { + throw new SodiumException('Could not obtain the file size'); + } + + $fp = fopen($filePath, 'rb'); + if (!is_resource($fp)) { + throw new SodiumException('Could not open input file for reading'); + } + + /** @var string $az */ + $az = hash('sha512', self::substr($secretKey, 0, 32), true); + + $az[0] = self::intToChr(self::chrToInt($az[0]) & 248); + $az[31] = self::intToChr((self::chrToInt($az[31]) & 63) | 64); + + $hs = hash_init('sha512'); + self::hash_update($hs, self::substr($az, 32, 32)); + /** @var resource $hs */ + $hs = self::updateHashWithFile($hs, $fp, $size); + + $nonceHash = hash_final($hs, true); + $pk = self::substr($secretKey, 32, 32); + $nonce = ParagonIE_Sodium_Core32_Ed25519::sc_reduce($nonceHash) . self::substr($nonceHash, 32); + $sig = ParagonIE_Sodium_Core32_Ed25519::ge_p3_tobytes( + ParagonIE_Sodium_Core32_Ed25519::ge_scalarmult_base($nonce) + ); + + $hs = hash_init('sha512'); + self::hash_update($hs, self::substr($sig, 0, 32)); + self::hash_update($hs, self::substr($pk, 0, 32)); + /** @var resource $hs */ + $hs = self::updateHashWithFile($hs, $fp, $size); + + $hramHash = hash_final($hs, true); + + $hram = ParagonIE_Sodium_Core32_Ed25519::sc_reduce($hramHash); + + $sigAfter = ParagonIE_Sodium_Core32_Ed25519::sc_muladd($hram, $az, $nonce); + + /** @var string $sig */ + $sig = self::substr($sig, 0, 32) . self::substr($sigAfter, 0, 32); + + try { + ParagonIE_Sodium_Compat::memzero($az); + } catch (SodiumException $ex) { + $az = null; + } + fclose($fp); + return $sig; + } + + /** + * + * Verify a file (rather than a string). Uses less memory than + * ParagonIE_Sodium_Compat::crypto_sign_verify_detached(), but + * produces the same result. (32-bit) + * + * @param string $sig Ed25519 signature + * @param string $filePath Absolute path to a file on the filesystem + * @param string $publicKey Signing public key + * + * @return bool + * @throws SodiumException + * @throws Exception + */ + public static function verify_core32($sig, $filePath, $publicKey) + { + /* Security checks */ + if (ParagonIE_Sodium_Core32_Ed25519::check_S_lt_L(self::substr($sig, 32, 32))) { + throw new SodiumException('S < L - Invalid signature'); + } + if (ParagonIE_Sodium_Core32_Ed25519::small_order($sig)) { + throw new SodiumException('Signature is on too small of an order'); + } + + if ((self::chrToInt($sig[63]) & 224) !== 0) { + throw new SodiumException('Invalid signature'); + } + $d = 0; + for ($i = 0; $i < 32; ++$i) { + $d |= self::chrToInt($publicKey[$i]); + } + if ($d === 0) { + throw new SodiumException('All zero public key'); + } + + /** @var int|bool $size */ + $size = filesize($filePath); + if (!is_int($size)) { + throw new SodiumException('Could not obtain the file size'); + } + /** @var int $size */ + + /** @var resource|bool $fp */ + $fp = fopen($filePath, 'rb'); + if (!is_resource($fp)) { + throw new SodiumException('Could not open input file for reading'); + } + /** @var resource $fp */ + + /** @var bool The original value of ParagonIE_Sodium_Compat::$fastMult */ + $orig = ParagonIE_Sodium_Compat::$fastMult; + + // Set ParagonIE_Sodium_Compat::$fastMult to true to speed up verification. + ParagonIE_Sodium_Compat::$fastMult = true; + + /** @var ParagonIE_Sodium_Core32_Curve25519_Ge_P3 $A */ + $A = ParagonIE_Sodium_Core32_Ed25519::ge_frombytes_negate_vartime($publicKey); + + $hs = hash_init('sha512'); + self::hash_update($hs, self::substr($sig, 0, 32)); + self::hash_update($hs, self::substr($publicKey, 0, 32)); + /** @var resource $hs */ + $hs = self::updateHashWithFile($hs, $fp, $size); + /** @var string $hDigest */ + $hDigest = hash_final($hs, true); + + /** @var string $h */ + $h = ParagonIE_Sodium_Core32_Ed25519::sc_reduce($hDigest) . self::substr($hDigest, 32); + + /** @var ParagonIE_Sodium_Core32_Curve25519_Ge_P2 $R */ + $R = ParagonIE_Sodium_Core32_Ed25519::ge_double_scalarmult_vartime( + $h, + $A, + self::substr($sig, 32) + ); + + /** @var string $rcheck */ + $rcheck = ParagonIE_Sodium_Core32_Ed25519::ge_tobytes($R); + + // Close the file handle + fclose($fp); + + // Reset ParagonIE_Sodium_Compat::$fastMult to what it was before. + ParagonIE_Sodium_Compat::$fastMult = $orig; + return self::verify_32($rcheck, self::substr($sig, 0, 32)); + } + + /** + * Encrypt a file (32-bit) + * + * @param resource $ifp + * @param resource $ofp + * @param int $mlen + * @param string $nonce + * @param string $key + * @return bool + * @throws SodiumException + * @throws TypeError + */ + protected static function secretbox_encrypt_core32($ifp, $ofp, $mlen, $nonce, $key) + { + $plaintext = fread($ifp, 32); + if (!is_string($plaintext)) { + throw new SodiumException('Could not read input file'); + } + $first32 = self::ftell($ifp); + + /** @var string $subkey */ + $subkey = ParagonIE_Sodium_Core32_HSalsa20::hsalsa20($nonce, $key); + + /** @var string $realNonce */ + $realNonce = ParagonIE_Sodium_Core32_Util::substr($nonce, 16, 8); + + /** @var string $block0 */ + $block0 = str_repeat("\x00", 32); + + /** @var int $mlen - Length of the plaintext message */ + $mlen0 = $mlen; + if ($mlen0 > 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES) { + $mlen0 = 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES; + } + $block0 .= ParagonIE_Sodium_Core32_Util::substr($plaintext, 0, $mlen0); + + /** @var string $block0 */ + $block0 = ParagonIE_Sodium_Core32_Salsa20::salsa20_xor( + $block0, + $realNonce, + $subkey + ); + + $state = new ParagonIE_Sodium_Core32_Poly1305_State( + ParagonIE_Sodium_Core32_Util::substr( + $block0, + 0, + ParagonIE_Sodium_Crypto::onetimeauth_poly1305_KEYBYTES + ) + ); + + // Pre-write 16 blank bytes for the Poly1305 tag + $start = self::ftell($ofp); + fwrite($ofp, str_repeat("\x00", 16)); + + /** @var string $c */ + $cBlock = ParagonIE_Sodium_Core32_Util::substr( + $block0, + ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES + ); + $state->update($cBlock); + fwrite($ofp, $cBlock); + $mlen -= 32; + + /** @var int $iter */ + $iter = 1; + + /** @var int $incr */ + $incr = self::BUFFER_SIZE >> 6; + + /* + * Set the cursor to the end of the first half-block. All future bytes will + * generated from salsa20_xor_ic, starting from 1 (second block). + */ + fseek($ifp, $first32, SEEK_SET); + + while ($mlen > 0) { + $blockSize = $mlen > self::BUFFER_SIZE + ? self::BUFFER_SIZE + : $mlen; + $plaintext = fread($ifp, $blockSize); + if (!is_string($plaintext)) { + throw new SodiumException('Could not read input file'); + } + $cBlock = ParagonIE_Sodium_Core32_Salsa20::salsa20_xor_ic( + $plaintext, + $realNonce, + $iter, + $subkey + ); + fwrite($ofp, $cBlock, $blockSize); + $state->update($cBlock); + + $mlen -= $blockSize; + $iter += $incr; + } + try { + ParagonIE_Sodium_Compat::memzero($block0); + ParagonIE_Sodium_Compat::memzero($subkey); + } catch (SodiumException $ex) { + $block0 = null; + $subkey = null; + } + $end = self::ftell($ofp); + + /* + * Write the Poly1305 authentication tag that provides integrity + * over the ciphertext (encrypt-then-MAC) + */ + fseek($ofp, $start, SEEK_SET); + fwrite($ofp, $state->finish(), ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_MACBYTES); + fseek($ofp, $end, SEEK_SET); + unset($state); + + return true; + } + + /** + * Decrypt a file (32-bit) + * + * @param resource $ifp + * @param resource $ofp + * @param int $mlen + * @param string $nonce + * @param string $key + * @return bool + * @throws SodiumException + * @throws TypeError + */ + protected static function secretbox_decrypt_core32($ifp, $ofp, $mlen, $nonce, $key) + { + $tag = fread($ifp, 16); + if (!is_string($tag)) { + throw new SodiumException('Could not read input file'); + } + + /** @var string $subkey */ + $subkey = ParagonIE_Sodium_Core32_HSalsa20::hsalsa20($nonce, $key); + + /** @var string $realNonce */ + $realNonce = ParagonIE_Sodium_Core32_Util::substr($nonce, 16, 8); + + /** @var string $block0 */ + $block0 = ParagonIE_Sodium_Core32_Salsa20::salsa20( + 64, + ParagonIE_Sodium_Core32_Util::substr($nonce, 16, 8), + $subkey + ); + + /* Verify the Poly1305 MAC -before- attempting to decrypt! */ + $state = new ParagonIE_Sodium_Core32_Poly1305_State(self::substr($block0, 0, 32)); + if (!self::onetimeauth_verify_core32($state, $ifp, $tag, $mlen)) { + throw new SodiumException('Invalid MAC'); + } + + /* + * Set the cursor to the end of the first half-block. All future bytes will + * generated from salsa20_xor_ic, starting from 1 (second block). + */ + $first32 = fread($ifp, 32); + if (!is_string($first32)) { + throw new SodiumException('Could not read input file'); + } + $first32len = self::strlen($first32); + fwrite( + $ofp, + self::xorStrings( + self::substr($block0, 32, $first32len), + self::substr($first32, 0, $first32len) + ) + ); + $mlen -= 32; + + /** @var int $iter */ + $iter = 1; + + /** @var int $incr */ + $incr = self::BUFFER_SIZE >> 6; + + /* Decrypts ciphertext, writes to output file. */ + while ($mlen > 0) { + $blockSize = $mlen > self::BUFFER_SIZE + ? self::BUFFER_SIZE + : $mlen; + $ciphertext = fread($ifp, $blockSize); + if (!is_string($ciphertext)) { + throw new SodiumException('Could not read input file'); + } + $pBlock = ParagonIE_Sodium_Core32_Salsa20::salsa20_xor_ic( + $ciphertext, + $realNonce, + $iter, + $subkey + ); + fwrite($ofp, $pBlock, $blockSize); + $mlen -= $blockSize; + $iter += $incr; + } + return true; + } + + /** + * One-time message authentication for 32-bit systems + * + * @param ParagonIE_Sodium_Core32_Poly1305_State $state + * @param resource $ifp + * @param string $tag + * @param int $mlen + * @return bool + * @throws SodiumException + * @throws TypeError + */ + protected static function onetimeauth_verify_core32( + ParagonIE_Sodium_Core32_Poly1305_State $state, + $ifp, + $tag = '', + $mlen = 0 + ) { + /** @var int $pos */ + $pos = self::ftell($ifp); + + while ($mlen > 0) { + $blockSize = $mlen > self::BUFFER_SIZE + ? self::BUFFER_SIZE + : $mlen; + $ciphertext = fread($ifp, $blockSize); + if (!is_string($ciphertext)) { + throw new SodiumException('Could not read input file'); + } + $state->update($ciphertext); + $mlen -= $blockSize; + } + $res = ParagonIE_Sodium_Core32_Util::verify_16($tag, $state->finish()); + + fseek($ifp, $pos, SEEK_SET); + return $res; + } + + /** + * @param resource $resource + * @return int + * @throws SodiumException + */ + private static function ftell($resource) + { + $return = ftell($resource); + if (!is_int($return)) { + throw new SodiumException('ftell() returned false'); + } + return (int) $return; + } +} |