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SIMD speed optimization for Kuznyechik cipher implementation (up to 2x speedup). Based on https://github.com/aprelev/libgost15.

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This commit is contained in:
Mounir IDRASSI
2017-11-27 09:10:17 +02:00
parent 685fad2d5d
commit f53eb8e260
10 changed files with 9835 additions and 168 deletions
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29
src/Common/Crypto.c
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@@ -254,6 +254,20 @@ void EncipherBlocks (int cipher, void *dataPtr, void *ks, size_t blockCount)
else if (cipher == CAMELLIA) {
camellia_encrypt_blocks(ks, data, data, (uint32) blockCount);
}
#endif
#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE && !defined (_UEFI)
else if (cipher == KUZNYECHIK
&& HasSSE2()
#if defined (TC_WINDOWS_DRIVER) && !defined (_WIN64)
&& (blockCount >= 4) && NT_SUCCESS (KeSaveFloatingPointState (&floatingPointState))
#endif
)
{
kuznyechik_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);
@@ -357,6 +371,20 @@ void DecipherBlocks (int cipher, void *dataPtr, void *ks, size_t blockCount)
else if (cipher == CAMELLIA) {
camellia_decrypt_blocks(ks, data, data, (uint32) blockCount);
}
#endif
#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE && !defined (_UEFI)
else if (cipher == KUZNYECHIK
&& HasSSE2()
#if defined (TC_WINDOWS_DRIVER) && !defined (_WIN64)
&& (blockCount >= 4) && NT_SUCCESS (KeSaveFloatingPointState (&floatingPointState))
#endif
)
{
kuznyechik_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);
@@ -429,6 +457,7 @@ BOOL CipherSupportsIntraDataUnitParallelization (int cipher)
|| (cipher == GOST89)
#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE && !defined (_UEFI)
|| (cipher == SERPENT && HasSSE2())
|| (cipher == KUZNYECHIK && HasSSE2())
#endif
#if CRYPTOPP_BOOL_X64
|| (cipher == TWOFISH)