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