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author | weidai <weidai11@users.noreply.github.com> | 2002-10-04 17:31:41 +0000 |
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committer | weidai <weidai11@users.noreply.github.com> | 2002-10-04 17:31:41 +0000 |
commit | a3b6ece7ab341b5b14135baeccea7d5e4c086771 (patch) | |
tree | 8b045309c238226c32a563b1df6b9c30a2f0e0b3 /gost.h | |
download | cryptopp-git-a3b6ece7ab341b5b14135baeccea7d5e4c086771.tar.gz |
Initial revision
Diffstat (limited to 'gost.h')
-rw-r--r-- | gost.h | 57 |
1 files changed, 57 insertions, 0 deletions
@@ -0,0 +1,57 @@ +#ifndef CRYPTOPP_GOST_H +#define CRYPTOPP_GOST_H + +/** \file +*/ + +#include "seckey.h" +#include "secblock.h" + +NAMESPACE_BEGIN(CryptoPP) + +struct GOST_Info : public FixedBlockSize<8>, public FixedKeyLength<32> +{ + static const char *StaticAlgorithmName() {return "GOST";} +}; + +/// <a href="http://www.weidai.com/scan-mirror/cs.html#GOST">GOST</a> +class GOST : public GOST_Info, public BlockCipherDocumentation +{ + class Base : public BlockCipherBaseTemplate<GOST_Info> + { + public: + void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length); + + protected: + static void PrecalculateSTable(); + + static const byte sBox[8][16]; + static bool sTableCalculated; + static word32 sTable[4][256]; + + FixedSizeSecBlock<word32, 8> key; + }; + + class Enc : public Base + { + public: + void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; + }; + + class Dec : public Base + { + public: + void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; + }; + +public: + typedef BlockCipherTemplate<ENCRYPTION, Enc> Encryption; + typedef BlockCipherTemplate<DECRYPTION, Dec> Decryption; +}; + +typedef GOST::Encryption GOSTEncryption; +typedef GOST::Decryption GOSTDecryption; + +NAMESPACE_END + +#endif |