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gost.h

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00001 #ifndef CRYPTOPP_GOST_H 00002 #define CRYPTOPP_GOST_H 00003 00004 /** \file 00005 */ 00006 00007 #include "seckey.h" 00008 #include "secblock.h" 00009 00010 NAMESPACE_BEGIN(CryptoPP) 00011 00012 //! _ 00013 struct GOST_Info : public FixedBlockSize<8>, public FixedKeyLength<32> 00014 { 00015 static const char *StaticAlgorithmName() {return "GOST";} 00016 }; 00017 00018 /// <a href="http://www.weidai.com/scan-mirror/cs.html#GOST">GOST</a> 00019 class GOST : public GOST_Info, public BlockCipherDocumentation 00020 { 00021 class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<GOST_Info> 00022 { 00023 public: 00024 void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length); 00025 00026 protected: 00027 static void PrecalculateSTable(); 00028 00029 static const byte sBox[8][16]; 00030 static bool sTableCalculated; 00031 static word32 sTable[4][256]; 00032 00033 FixedSizeSecBlock<word32, 8> key; 00034 }; 00035 00036 class CRYPTOPP_NO_VTABLE Enc : public Base 00037 { 00038 public: 00039 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; 00040 }; 00041 00042 class CRYPTOPP_NO_VTABLE Dec : public Base 00043 { 00044 public: 00045 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; 00046 }; 00047 00048 public: 00049 typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption; 00050 typedef BlockCipherFinal<DECRYPTION, Dec> Decryption; 00051 }; 00052 00053 typedef GOST::Encryption GOSTEncryption; 00054 typedef GOST::Decryption GOSTDecryption; 00055 00056 NAMESPACE_END 00057 00058 #endif

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