1 files changed, 0 insertions, 145 deletions
diff --git a/lib/cryptopp/pssr.cpp b/lib/cryptopp/pssr.cpp
deleted file mode 100644
index ccbe4ee27..000000000
--- a/lib/cryptopp/pssr.cpp
+++ /dev/null
@@ -1,145 +0,0 @@
-// pssr.cpp - written and placed in the public domain by Wei Dai
-
-#include "pch.h"
-#include "pssr.h"
-#include <functional>
-
-NAMESPACE_BEGIN(CryptoPP)
-
-// more in dll.cpp
-template<> const byte EMSA2HashId<RIPEMD160>::id = 0x31;
-template<> const byte EMSA2HashId<RIPEMD128>::id = 0x32;
-template<> const byte EMSA2HashId<Whirlpool>::id = 0x37;
-
-#ifndef CRYPTOPP_IMPORTS
-
-size_t PSSR_MEM_Base::MinRepresentativeBitLength(size_t hashIdentifierLength, size_t digestLength) const
-{
-	size_t saltLen = SaltLen(digestLength);
-	size_t minPadLen = MinPadLen(digestLength);
-	return 9 + 8*(minPadLen + saltLen + digestLength + hashIdentifierLength);
-}
-
-size_t PSSR_MEM_Base::MaxRecoverableLength(size_t representativeBitLength, size_t hashIdentifierLength, size_t digestLength) const
-{
-	if (AllowRecovery())
-		return SaturatingSubtract(representativeBitLength, MinRepresentativeBitLength(hashIdentifierLength, digestLength)) / 8;
-	return 0;
-}
-
-bool PSSR_MEM_Base::IsProbabilistic() const 
-{
-	return SaltLen(1) > 0;
-}
-
-bool PSSR_MEM_Base::AllowNonrecoverablePart() const
-{
-	return true;
-}
-
-bool PSSR_MEM_Base::RecoverablePartFirst() const
-{
-	return false;
-}
-
-void PSSR_MEM_Base::ComputeMessageRepresentative(RandomNumberGenerator &rng, 
-	const byte *recoverableMessage, size_t recoverableMessageLength,
-	HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
-	byte *representative, size_t representativeBitLength) const
-{
-	assert(representativeBitLength >= MinRepresentativeBitLength(hashIdentifier.second, hash.DigestSize()));
-
-	const size_t u = hashIdentifier.second + 1;
-	const size_t representativeByteLength = BitsToBytes(representativeBitLength);
-	const size_t digestSize = hash.DigestSize();
-	const size_t saltSize = SaltLen(digestSize);
-	byte *const h = representative + representativeByteLength - u - digestSize;
-
-	SecByteBlock digest(digestSize), salt(saltSize);
-	hash.Final(digest);
-	rng.GenerateBlock(salt, saltSize);
-
-	// compute H = hash of M'
-	byte c[8];
-	PutWord(false, BIG_ENDIAN_ORDER, c, (word32)SafeRightShift<29>(recoverableMessageLength));
-	PutWord(false, BIG_ENDIAN_ORDER, c+4, word32(recoverableMessageLength << 3));
-	hash.Update(c, 8);
-	hash.Update(recoverableMessage, recoverableMessageLength);
-	hash.Update(digest, digestSize);
-	hash.Update(salt, saltSize);
-	hash.Final(h);
-
-	// compute representative
-	GetMGF().GenerateAndMask(hash, representative, representativeByteLength - u - digestSize, h, digestSize, false);
-	byte *xorStart = representative + representativeByteLength - u - digestSize - salt.size() - recoverableMessageLength - 1;
-	xorStart[0] ^= 1;
-	xorbuf(xorStart + 1, recoverableMessage, recoverableMessageLength);
-	xorbuf(xorStart + 1 + recoverableMessageLength, salt, salt.size());
-	memcpy(representative + representativeByteLength - u, hashIdentifier.first, hashIdentifier.second);
-	representative[representativeByteLength - 1] = hashIdentifier.second ? 0xcc : 0xbc;
-	if (representativeBitLength % 8 != 0)
-		representative[0] = (byte)Crop(representative[0], representativeBitLength % 8);
-}
-
-DecodingResult PSSR_MEM_Base::RecoverMessageFromRepresentative(
-	HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
-	byte *representative, size_t representativeBitLength,
-	byte *recoverableMessage) const
-{
-	assert(representativeBitLength >= MinRepresentativeBitLength(hashIdentifier.second, hash.DigestSize()));
-
-	const size_t u = hashIdentifier.second + 1;
-	const size_t representativeByteLength = BitsToBytes(representativeBitLength);
-	const size_t digestSize = hash.DigestSize();
-	const size_t saltSize = SaltLen(digestSize);
-	const byte *const h = representative + representativeByteLength - u - digestSize;
-
-	SecByteBlock digest(digestSize);
-	hash.Final(digest);
-
-	DecodingResult result(0);
-	bool &valid = result.isValidCoding;
-	size_t &recoverableMessageLength = result.messageLength;
-
-	valid = (representative[representativeByteLength - 1] == (hashIdentifier.second ? 0xcc : 0xbc)) && valid;
-	valid = VerifyBufsEqual(representative + representativeByteLength - u, hashIdentifier.first, hashIdentifier.second) && valid;
-
-	GetMGF().GenerateAndMask(hash, representative, representativeByteLength - u - digestSize, h, digestSize);
-	if (representativeBitLength % 8 != 0)
-		representative[0] = (byte)Crop(representative[0], representativeBitLength % 8);
-
-	// extract salt and recoverableMessage from DB = 00 ... || 01 || M || salt
-	byte *salt = representative + representativeByteLength - u - digestSize - saltSize;
-	byte *M = std::find_if(representative, salt-1, std::bind2nd(std::not_equal_to<byte>(), 0));
-	recoverableMessageLength = salt-M-1;
-	if (*M == 0x01 
-		&& (size_t)(M - representative - (representativeBitLength % 8 != 0)) >= MinPadLen(digestSize)
-		&& recoverableMessageLength <= MaxRecoverableLength(representativeBitLength, hashIdentifier.second, digestSize))
-	{
-		memcpy(recoverableMessage, M+1, recoverableMessageLength);
-	}
-	else
-	{
-		recoverableMessageLength = 0;
-		valid = false;
-	}
-
-	// verify H = hash of M'
-	byte c[8];
-	PutWord(false, BIG_ENDIAN_ORDER, c, (word32)SafeRightShift<29>(recoverableMessageLength));
-	PutWord(false, BIG_ENDIAN_ORDER, c+4, word32(recoverableMessageLength << 3));
-	hash.Update(c, 8);
-	hash.Update(recoverableMessage, recoverableMessageLength);
-	hash.Update(digest, digestSize);
-	hash.Update(salt, saltSize);
-	valid = hash.Verify(h) && valid;
-
-	if (!AllowRecovery() && valid && recoverableMessageLength != 0)
-		{throw NotImplemented("PSSR_MEM: message recovery disabled");}
-	
-	return result;
-}
-
-#endif
-
-NAMESPACE_END