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Crypto: Use SIMD optimized Serpent implementation from Botan. 2.5x speed gain factor. Update credits and copyrights notice.

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This commit is contained in:
Mounir IDRASSI
2016-10-04 13:21:48 +02:00
parent 7ff3c5d108
commit e5a9e9239b
21 changed files with 285 additions and 26 deletions
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38
src/Common/Crypto.c
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@@ -232,6 +232,21 @@ void EncipherBlocks (int cipher, void *dataPtr, void *ks, size_t blockCount)
KeRestoreFloatingPointState (&floatingPointState);
#endif
}
#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE
else if (cipher == SERPENT
&& (blockCount >= 4)
&& HasSSE2()
#if defined (TC_WINDOWS_DRIVER) && !defined (_WIN64)
&& NT_SUCCESS (KeSaveFloatingPointState (&floatingPointState))
#endif
)
{
serpent_encrypt_blocks (data, data, blockCount, ks);
#if defined (TC_WINDOWS_DRIVER) && !defined (_WIN64)
KeRestoreFloatingPointState (&floatingPointState);
#endif
}
#endif
else if (cipher == GOST89) {
gost_encrypt(data, data, ks, (int)blockCount);
}
@@ -312,6 +327,21 @@ void DecipherBlocks (int cipher, void *dataPtr, void *ks, size_t blockCount)
KeRestoreFloatingPointState (&floatingPointState);
#endif
}
#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE
else if (cipher == SERPENT
&& (blockCount >= 4)
&& HasSSE2()
#if defined (TC_WINDOWS_DRIVER) && !defined (_WIN64)
&& NT_SUCCESS (KeSaveFloatingPointState (&floatingPointState))
#endif
)
{
serpent_decrypt_blocks (data, data, blockCount, ks);
#if defined (TC_WINDOWS_DRIVER) && !defined (_WIN64)
KeRestoreFloatingPointState (&floatingPointState);
#endif
}
#endif
else if (cipher == GOST89) {
gost_decrypt(data, data, ks, (int)blockCount);
}
@@ -383,8 +413,12 @@ int CipherGetKeyScheduleSize (int cipherId)
BOOL CipherSupportsIntraDataUnitParallelization (int cipher)
{
return cipher == AES && IsAesHwCpuSupported() ||
cipher == GOST89;
return (cipher == AES && IsAesHwCpuSupported())
|| (cipher == GOST89)
#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE
|| (cipher == SERPENT && HasSSE2())
#endif
;
}
#endif