template <class T, class BASE> void IteratedHashBase<T, BASE>::TruncatedFinal(byte *digest, size_t size)
{
this->ThrowIfInvalidTruncatedSize(size);
T* dataBuf = this->DataBuf();
T* stateBuf = this->StateBuf();
unsigned int blockSize = this->BlockSize();
ByteOrder order = this->GetByteOrder();
PadLastBlock(blockSize - 2*sizeof(HashWordType));
dataBuf[blockSize/sizeof(T)-2+order] = ConditionalByteReverse(order, this->GetBitCountLo());
dataBuf[blockSize/sizeof(T)-1-order] = ConditionalByteReverse(order, this->GetBitCountHi());
HashBlock(dataBuf);
if (IsAligned<HashWordType>(digest) && size%sizeof(HashWordType)==0)
ConditionalByteReverse<HashWordType>(order, (HashWordType *)(void*)digest, stateBuf, size);
else
{
ConditionalByteReverse<HashWordType>(order, stateBuf, stateBuf, this->DigestSize());
memcpy(digest, stateBuf, size);
}
this->Restart(); // reinit for next use
}
void Tiger::Final(byte *hash)
{
PadLastBlock(56, 0x01);
CorrectEndianess(data, data, 56);
data[7] = countLo;
Transform(digest, data);
CorrectEndianess(digest, digest, DigestSize());
memcpy(hash, digest, DigestSize());
Reinit(); // reinit for next use
}
void RIPEMD160::Final (byte *hash)
{
PadLastBlock(56);
CorrectEndianess(data, data, 56);
data[14] = countLo;
data[15] = countHi;
Transform(digest, data);
CorrectEndianess(digest, digest, DIGESTSIZE);
memcpy(hash, digest, DIGESTSIZE);
Init(); // reinit for next use
}
void TTMAC_Base::TruncatedFinal(byte *hash, size_t size)
{
PadLastBlock(BlockSize() - 2*sizeof(HashWordType));
CorrectEndianess(m_data, m_data, BlockSize() - 2*sizeof(HashWordType));
m_data[m_data.size()-2] = GetBitCountLo();
m_data[m_data.size()-1] = GetBitCountHi();
Transform(m_digest, m_data, true);
word32 t2 = m_digest[2];
word32 t3 = m_digest[3];
if (size != DIGESTSIZE)
{
switch (size)
{
case 16:
m_digest[3] += m_digest[1] + m_digest[4];
case 12:
m_digest[2] += m_digest[0] + t3;
case 8:
m_digest[0] += m_digest[1] + t3;
m_digest[1] += m_digest[4] + t2;
break;
case 4:
m_digest[0] +=
m_digest[1] +
m_digest[2] +
m_digest[3] +
m_digest[4];
break;
case 0:
// Used by HashTransformation::Restart()
break;
default:
throw InvalidArgument("TTMAC_Base: can't truncate a Two-Track-MAC 20 byte digest to " + IntToString(size) + " bytes");
break;
}
}
CorrectEndianess(m_digest, m_digest, size);
memcpy(hash, m_digest, size);
Restart(); // reinit for next use
}
void PanamaHash<B>::TruncatedFinal(byte *hash, unsigned int size)
{
ThrowIfInvalidTruncatedSize(size);
PadLastBlock(BLOCKSIZE, 0x01);
vTransform(m_data);
Iterate(32); // pull
ConditionalByteReverse(B::ToEnum(), m_state+9, m_state+9, DIGESTSIZE);
memcpy(hash, m_state+9, size);
Restart(); // reinit for next use
}
void PanamaHash<B>::TruncatedFinal(byte *hash, unsigned int size)
{
this->ThrowIfInvalidTruncatedSize(size);
PadLastBlock(this->BLOCKSIZE, 0x01);
HashEndianCorrectedBlock(this->m_data);
this->Iterate(32); // pull
ConditionalByteReverse(B::ToEnum(), this->m_state+9, this->m_state+9, DIGESTSIZE);
memcpy(hash, this->m_state+9, size);
this->Restart(); // reinit for next use
}
void Tiger::TruncatedFinal(byte *hash, unsigned int size)
{
ThrowIfInvalidTruncatedSize(size);
PadLastBlock(56, 0x01);
CorrectEndianess(m_data, m_data, 56);
m_data[7] = GetBitCountLo();
Transform(m_digest, m_data);
CorrectEndianess(m_digest, m_digest, DigestSize());
memcpy(hash, m_digest, size);
Restart(); // reinit for next use
}
template <class T, class BASE> void IteratedHashBase<T, BASE>::TruncatedFinal(byte *digest, size_t size)
{
this->ThrowIfInvalidTruncatedSize(size);
PadLastBlock(this->BlockSize() - 2*sizeof(HashWordType));
ByteOrder order = this->GetByteOrder();
ConditionalByteReverse<HashWordType>(order, this->m_data, this->m_data, this->BlockSize() - 2*sizeof(HashWordType));
this->m_data[this->m_data.size()-2] = order ? this->GetBitCountHi() : this->GetBitCountLo();
this->m_data[this->m_data.size()-1] = order ? this->GetBitCountLo() : this->GetBitCountHi();
HashEndianCorrectedBlock(this->m_data);
ConditionalByteReverse<HashWordType>(order, this->m_digest, this->m_digest, this->DigestSize());
memcpy(digest, this->m_digest, size);
this->Restart(); // reinit for next use
}
void HAVAL::Final (byte *hash)
{
PadLastBlock(118, 1); // first byte of padding for HAVAL is 1 instead of 0x80
CorrectEndianess(data, data, 120);
data[29] &= 0xffff;
data[29] |= ((word32)digestSize<<25) | ((word32)pass<<19) | ((word32)VERSION<<16);
data[30] = countLo;
data[31] = countHi;
vTransform(data);
Tailor(digestSize*8);
CorrectEndianess(digest, digest, digestSize);
memcpy(hash, digest, digestSize);
Reinit(); // reinit for next use
}
void PanamaHash<B>::TruncatedFinal(byte *hash, size_t size)
{
this->ThrowIfInvalidTruncatedSize(size);
PadLastBlock(this->BLOCKSIZE, 0x01);
HashEndianCorrectedBlock(this->m_data);
this->Iterate(32); // pull
FixedSizeSecBlock<word32, 8> buf;
this->Iterate(1, NULL, buf, NULL);
memcpy(hash, buf, size);
this->Restart(); // reinit for next use
}
void Whirlpool::TruncatedFinal(byte *hash, size_t size)
{
ThrowIfInvalidTruncatedSize(size);
PadLastBlock(32);
CorrectEndianess(m_data, m_data, 32);
m_data[m_data.size()-4] = 0;
m_data[m_data.size()-3] = 0;
m_data[m_data.size()-2] = GetBitCountHi();
m_data[m_data.size()-1] = GetBitCountLo();
Transform(m_digest, m_data);
CorrectEndianess(m_digest, m_digest, DigestSize());
memcpy(hash, m_digest, size);
Restart(); // reinit for next use
}
void HAVAL::TruncatedFinal(byte *hash, unsigned int size)
{
ThrowIfInvalidTruncatedSize(size);
PadLastBlock(118, 1); // first byte of padding for HAVAL is 1 instead of 0x80
CorrectEndianess(m_data, m_data, 120);
m_data[29] &= 0xffff;
m_data[29] |= ((word32)digestSize<<25) | ((word32)pass<<19) | ((word32)HAVAL_VERSION<<16);
m_data[30] = GetBitCountLo();
m_data[31] = GetBitCountHi();
vTransform(m_data);
Tailor(digestSize*8);
CorrectEndianess(m_digest, m_digest, digestSize);
memcpy(hash, m_digest, size);
Restart(); // reinit for next use
}
void MD5MAC::Final (byte *hash)
{
PadLastBlock(56);
CorrectEndianess(data, data, 56);
data[14] = countLo;
data[15] = countHi;
Transform(digest, data, key+4);
unsigned i;
for (i=0; i<4; i++)
data[i] = key[8+i];
for (i=0; i<12; i++)
data[i+4] = T[i] ^ key[8+i%4];
Transform(digest, data, key+4);
CorrectEndianess(digest, digest, DIGESTSIZE);
memcpy(hash, digest, DIGESTSIZE);
Init(); // reinit for next use
}
void MD5MAC_Base::TruncatedFinal(byte *hash, size_t size)
{
ThrowIfInvalidTruncatedSize(size);
PadLastBlock(56);
CorrectEndianess(m_data, m_data, 56);
m_data[14] = GetBitCountLo();
m_data[15] = GetBitCountHi();
Transform(m_digest, m_data, m_key+4);
unsigned i;
for (i=0; i<4; i++)
m_data[i] = m_key[8+i];
for (i=0; i<12; i++)
m_data[i+4] = T[i] ^ m_key[8+i%4];
Transform(m_digest, m_data, m_key+4);
CorrectEndianess(m_digest, m_digest, DIGESTSIZE);
memcpy(hash, m_digest, size);
Restart(); // reinit for next use
}
