/************************************************* * Twofish Header File * * (C) 1999-2007 Jack Lloyd * *************************************************/ #ifndef BOTAN_TWOFISH_H__ #define BOTAN_TWOFISH_H__ #include namespace Botan { /************************************************* * Twofish * *************************************************/ class BOTAN_DLL Twofish : public BlockCipher { public: void clear() throw(); std::string name() const { return "Twofish"; } BlockCipher* clone() const { return new Twofish; } Twofish() : BlockCipher(16, 16, 32, 8) {} private: void enc(const byte[], byte[]) const; void dec(const byte[], byte[]) const; void key(const byte[], u32bit); static void rs_mul(byte[4], byte, u32bit); static const u32bit MDS0[256]; static const u32bit MDS1[256]; static const u32bit MDS2[256]; static const u32bit MDS3[256]; static const byte Q0[256]; static const byte Q1[256]; static const byte RS[32]; static const byte EXP_TO_POLY[255]; static const byte POLY_TO_EXP[255]; SecureBuffer SBox0, SBox1, SBox2, SBox3; SecureBuffer round_key; }; } #endif