00001 #ifndef CRYPTOPP_TWOFISH_H
00002 #define CRYPTOPP_TWOFISH_H
00003
00004
00005
00006
00007 #include "seckey.h"
00008 #include "secblock.h"
00009
00010 NAMESPACE_BEGIN(CryptoPP)
00011
00012
00013 struct Twofish_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 0, 32>, FixedRounds<16>
00014 {
00015 static const char *StaticAlgorithmName() {return "Twofish";}
00016 };
00017
00018
00019 class Twofish : public Twofish_Info, public BlockCipherDocumentation
00020 {
00021 class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Twofish_Info>
00022 {
00023 public:
00024 void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms);
00025
00026 protected:
00027 static word32 h0(word32 x, const word32 *key, unsigned int kLen);
00028 static word32 h(word32 x, const word32 *key, unsigned int kLen);
00029
00030 static const byte q[2][256];
00031 static const word32 mds[4][256];
00032
00033 FixedSizeSecBlock<word32, 40> m_k;
00034 FixedSizeSecBlock<word32[256], 4> m_s;
00035 };
00036
00037 class CRYPTOPP_NO_VTABLE Enc : public Base
00038 {
00039 public:
00040 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00041 };
00042
00043 class CRYPTOPP_NO_VTABLE Dec : public Base
00044 {
00045 public:
00046 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00047 };
00048
00049 public:
00050 typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
00051 typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
00052 };
00053
00054 typedef Twofish::Encryption TwofishEncryption;
00055 typedef Twofish::Decryption TwofishDecryption;
00056
00057 NAMESPACE_END
00058
00059 #endif