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| author | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2016-10-04 13:21:48 +0200 |
|---|---|---|
| committer | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2016-10-17 18:40:23 +0200 |
| commit | e5a9e9239b0cf1001d9b91497b4ff3ab4a190b1f (patch) | |
| tree | 5656a151e5f777d834924a3784432c5bd928ed03 /src/Volume/Cipher.cpp | |
| parent | 7ff3c5d1080482c55a5c5f4720d22d212a8d7373 (diff) | |
| download | VeraCrypt-e5a9e9239b0cf1001d9b91497b4ff3ab4a190b1f.tar.gz VeraCrypt-e5a9e9239b0cf1001d9b91497b4ff3ab4a190b1f.zip | |
Crypto: Use SIMD optimized Serpent implementation from Botan. 2.5x speed gain factor. Update credits and copyrights notice.
Diffstat (limited to 'src/Volume/Cipher.cpp')
| -rw-r--r-- | src/Volume/Cipher.cpp | 53 |
1 files changed, 51 insertions, 2 deletions
diff --git a/src/Volume/Cipher.cpp b/src/Volume/Cipher.cpp index 3363f640..09c821bb 100644 --- a/src/Volume/Cipher.cpp +++ b/src/Volume/Cipher.cpp @@ -13,7 +13,7 @@ #include "Platform/Platform.h" #include "Cipher.h" #include "Crypto/Aes.h" -#include "Crypto/Serpent.h" +#include "Crypto/SerpentFast.h" #include "Crypto/Twofish.h" #include "Crypto/Camellia.h" #include "Crypto/GostCipher.h" @@ -21,8 +21,8 @@ #ifdef TC_AES_HW_CPU # include "Crypto/Aes_hw_cpu.h" -# include "Crypto/cpu.h" #endif +#include "Crypto/cpu.h" namespace VeraCrypt { @@ -224,6 +224,55 @@ namespace VeraCrypt { serpent_set_key (key, ScheduledKey); } + + void CipherSerpent::EncryptBlocks (byte *data, size_t blockCount) const + { + if (!Initialized) + throw NotInitialized (SRC_POS); + +#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE + if ((blockCount >= 4) + && IsHwSupportAvailable()) + { + serpent_encrypt_blocks (data, data, blockCount, ScheduledKey.Ptr()); + } + else +#endif + Cipher::EncryptBlocks (data, blockCount); + } + + void CipherSerpent::DecryptBlocks (byte *data, size_t blockCount) const + { + if (!Initialized) + throw NotInitialized (SRC_POS); + +#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE + if ((blockCount >= 4) + && IsHwSupportAvailable()) + { + serpent_decrypt_blocks (data, data, blockCount, ScheduledKey.Ptr()); + } + else +#endif + Cipher::DecryptBlocks (data, blockCount); + } + + bool CipherSerpent::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 + } // Twofish |