Public/VeraCrypt
1
0
Fork 0
mirror of https://github.com/veracrypt/VeraCrypt.git synced 2025-11-11 11:08:02 -06:00
Code Activity

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

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

48
src/Volume/Cipher.cpp
View File

@@ -462,5 +462,53 @@ namespace VeraCrypt
{
kuznyechik_set_key (key, (kuznyechik_kds *) ScheduledKey.Ptr());
}
void CipherKuznyechik::EncryptBlocks (byte *data, size_t blockCount) const
{
if (!Initialized)
throw NotInitialized (SRC_POS);
#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE
if ((blockCount >= 4)
&& IsHwSupportAvailable())
{
kuznyechik_encrypt_blocks (data, data, blockCount, (kuznyechik_kds *) ScheduledKey.Ptr());
}
else
#endif
Cipher::EncryptBlocks (data, blockCount);
}
void CipherKuznyechik::DecryptBlocks (byte *data, size_t blockCount) const
{
if (!Initialized)
throw NotInitialized (SRC_POS);
#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE
if ((blockCount >= 4)
&& IsHwSupportAvailable())
{
kuznyechik_decrypt_blocks (data, data, blockCount, (kuznyechik_kds *) ScheduledKey.Ptr());
}
else
#endif
Cipher::DecryptBlocks (data, blockCount);
}
bool CipherKuznyechik::IsHwSupportAvailable () const
{
#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE
static bool state = false;
static bool stateValid = false;
if (!stateValid)
{
state = HasSSE2() ? true : false;
stateValid = true;
}
return state;
#else
return false;
#endif
}
bool Cipher::HwSupportEnabled = true;
}