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-rw-r--r--vendor/web-token/jwt-key-mgmt/JWKFactory.php304
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+<?php
+
+declare(strict_types=1);
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014-2018 Spomky-Labs
+ *
+ * This software may be modified and distributed under the terms
+ * of the MIT license. See the LICENSE file for details.
+ */
+
+namespace Jose\Component\KeyManagement;
+
+use Base64Url\Base64Url;
+use InvalidArgumentException;
+use Jose\Component\Core\JWK;
+use Jose\Component\Core\JWKSet;
+use Jose\Component\Core\Util\Ecc\Curve;
+use Jose\Component\Core\Util\ECKey;
+use Jose\Component\KeyManagement\KeyConverter\KeyConverter;
+use Jose\Component\KeyManagement\KeyConverter\RSAKey;
+use function openssl_pkey_get_details;
+use function openssl_pkey_new;
+use RuntimeException;
+
+class JWKFactory
+{
+ /**
+ * Creates a RSA key with the given key size and additional values.
+ *
+ * @param int $size The key size in bits
+ * @param array $values values to configure the key
+ */
+ public static function createRSAKey(int $size, array $values = []): JWK
+ {
+ if (0 !== $size % 8) {
+ throw new InvalidArgumentException('Invalid key size.');
+ }
+
+ if (512 > $size) {
+ throw new InvalidArgumentException('Key length is too short. It needs to be at least 512 bits.');
+ }
+
+ $key = openssl_pkey_new([
+ 'private_key_bits' => $size,
+ 'private_key_type' => OPENSSL_KEYTYPE_RSA,
+ ]);
+ $details = openssl_pkey_get_details($key);
+ \openssl_free_key($key);
+ $rsa = RSAKey::createFromKeyDetails($details['rsa']);
+ $values = \array_merge(
+ $values,
+ $rsa->toArray()
+ );
+
+ return new JWK($values);
+ }
+
+ /**
+ * Creates a EC key with the given curve and additional values.
+ *
+ * @param string $curve The curve
+ * @param array $values values to configure the key
+ */
+ public static function createECKey(string $curve, array $values = []): JWK
+ {
+ return ECKey::createECKey($curve, $values);
+ }
+
+ /**
+ * Creates a octet key with the given key size and additional values.
+ *
+ * @param int $size The key size in bits
+ * @param array $values values to configure the key
+ */
+ public static function createOctKey(int $size, array $values = []): JWK
+ {
+ if (0 !== $size % 8) {
+ throw new InvalidArgumentException('Invalid key size.');
+ }
+ $values = \array_merge(
+ $values,
+ [
+ 'kty' => 'oct',
+ 'k' => Base64Url::encode(\random_bytes($size / 8)),
+ ]
+ );
+
+ return new JWK($values);
+ }
+
+ /**
+ * Creates a OKP key with the given curve and additional values.
+ *
+ * @param string $curve The curve
+ * @param array $values values to configure the key
+ */
+ public static function createOKPKey(string $curve, array $values = []): JWK
+ {
+ switch ($curve) {
+ case 'X25519':
+ $keyPair = \sodium_crypto_box_keypair();
+ $secret = \sodium_crypto_box_secretkey($keyPair);
+ $x = \sodium_crypto_box_publickey($keyPair);
+
+ break;
+ case 'Ed25519':
+ $keyPair = \sodium_crypto_sign_keypair();
+ $secret = \sodium_crypto_sign_secretkey($keyPair);
+ $x = \sodium_crypto_sign_publickey($keyPair);
+
+ break;
+ default:
+ throw new InvalidArgumentException(\sprintf('Unsupported "%s" curve', $curve));
+ }
+ $secretLength = mb_strlen($secret, '8bit');
+ $d = mb_substr($secret, 0, -$secretLength / 2, '8bit');
+
+ $values = \array_merge(
+ $values,
+ [
+ 'kty' => 'OKP',
+ 'crv' => $curve,
+ 'd' => Base64Url::encode($d),
+ 'x' => Base64Url::encode($x),
+ ]
+ );
+
+ return new JWK($values);
+ }
+
+ /**
+ * Creates a none key with the given additional values.
+ * Please note that this key type is not pat of any specification.
+ * It is used to prevent the use of the "none" algorithm with other key types.
+ *
+ * @param array $values values to configure the key
+ */
+ public static function createNoneKey(array $values = []): JWK
+ {
+ $values = \array_merge(
+ $values,
+ [
+ 'kty' => 'none',
+ 'alg' => 'none',
+ 'use' => 'sig',
+ ]
+ );
+
+ return new JWK($values);
+ }
+
+ /**
+ * Creates a key from a Json string.
+ *
+ * @return JWK|JWKSet
+ */
+ public static function createFromJsonObject(string $value)
+ {
+ $json = \json_decode($value, true);
+ if (!\is_array($json)) {
+ throw new InvalidArgumentException('Invalid key or key set.');
+ }
+
+ return self::createFromValues($json);
+ }
+
+ /**
+ * Creates a key or key set from the given input.
+ *
+ * @return JWK|JWKSet
+ */
+ public static function createFromValues(array $values)
+ {
+ if (\array_key_exists('keys', $values) && \is_array($values['keys'])) {
+ return JWKSet::createFromKeyData($values);
+ }
+
+ return new JWK($values);
+ }
+
+ /**
+ * This method create a JWK object using a shared secret.
+ */
+ public static function createFromSecret(string $secret, array $additional_values = []): JWK
+ {
+ $values = \array_merge(
+ $additional_values,
+ [
+ 'kty' => 'oct',
+ 'k' => Base64Url::encode($secret),
+ ]
+ );
+
+ return new JWK($values);
+ }
+
+ /**
+ * This method will try to load a X.509 certificate and convert it into a public key.
+ */
+ public static function createFromCertificateFile(string $file, array $additional_values = []): JWK
+ {
+ $values = KeyConverter::loadKeyFromCertificateFile($file);
+ $values = \array_merge($values, $additional_values);
+
+ return new JWK($values);
+ }
+
+ /**
+ * Extract a keyfrom a key set identified by the given index .
+ *
+ * @param int|string $index
+ */
+ public static function createFromKeySet(JWKSet $jwkset, $index): JWK
+ {
+ return $jwkset->get($index);
+ }
+
+ /**
+ * This method will try to load a PKCS#12 file and convert it into a public key.
+ *
+ * @throws \Exception
+ */
+ public static function createFromPKCS12CertificateFile(string $file, ?string $secret = '', array $additional_values = []): JWK
+ {
+ $res = \openssl_pkcs12_read(\file_get_contents($file), $certs, $secret);
+ if (false === $res || !\is_array($certs) || !\array_key_exists('pkey', $certs)) {
+ throw new RuntimeException('Unable to load the certificates.');
+ }
+
+ return self::createFromKey($certs['pkey'], null, $additional_values);
+ }
+
+ /**
+ * This method will try to convert a X.509 certificate into a public key.
+ */
+ public static function createFromCertificate(string $certificate, array $additional_values = []): JWK
+ {
+ $values = KeyConverter::loadKeyFromCertificate($certificate);
+ $values = \array_merge($values, $additional_values);
+
+ return new JWK($values);
+ }
+
+ /**
+ * This method will try to convert a X.509 certificate resource into a public key.
+ *
+ * @param resource $res
+ *
+ * @throws \Exception
+ */
+ public static function createFromX509Resource($res, array $additional_values = []): JWK
+ {
+ $values = KeyConverter::loadKeyFromX509Resource($res);
+ $values = \array_merge($values, $additional_values);
+
+ return new JWK($values);
+ }
+
+ /**
+ * This method will try to load and convert a key file into a JWK object.
+ * If the key is encrypted, the password must be set.
+ *
+ * @throws \Exception
+ */
+ public static function createFromKeyFile(string $file, ?string $password = null, array $additional_values = []): JWK
+ {
+ $values = KeyConverter::loadFromKeyFile($file, $password);
+ $values = \array_merge($values, $additional_values);
+
+ return new JWK($values);
+ }
+
+ /**
+ * This method will try to load and convert a key into a JWK object.
+ * If the key is encrypted, the password must be set.
+ *
+ * @throws \Exception
+ */
+ public static function createFromKey(string $key, ?string $password = null, array $additional_values = []): JWK
+ {
+ $values = KeyConverter::loadFromKey($key, $password);
+ $values = \array_merge($values, $additional_values);
+
+ return new JWK($values);
+ }
+
+ /**
+ * This method will try to load and convert a X.509 certificate chain into a public key.
+ *
+ * Be careful! The certificate chain is loaded, but it is NOT VERIFIED by any mean!
+ * It is mandatory to verify the root CA or intermediate CA are trusted.
+ * If not done, it may lead to potential security issues.
+ */
+ public static function createFromX5C(array $x5c, array $additional_values = []): JWK
+ {
+ $values = KeyConverter::loadFromX5C($x5c);
+ $values = \array_merge($values, $additional_values);
+
+ return new JWK($values);
+ }
+}
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