/************************************************* * CAST-128 Header File * * (C) 1999-2007 Jack Lloyd * *************************************************/ #ifndef BOTAN_CAST128_H__ #define BOTAN_CAST128_H__ #include namespace Botan { /************************************************* * CAST-128 * *************************************************/ class BOTAN_DLL CAST_128 : public BlockCipher { public: void clear() throw() { MK.clear(); RK.clear(); } std::string name() const { return "CAST-128"; } BlockCipher* clone() const { return new CAST_128; } CAST_128() : BlockCipher(8, 11, 16) {} private: void enc(const byte[], byte[]) const; void dec(const byte[], byte[]) const; void key(const byte[], u32bit); static void key_schedule(u32bit[16], u32bit[4]); static const u32bit S5[256]; static const u32bit S6[256]; static const u32bit S7[256]; static const u32bit S8[256]; SecureBuffer MK, RK; }; extern const u32bit CAST_SBOX1[256]; extern const u32bit CAST_SBOX2[256]; extern const u32bit CAST_SBOX3[256]; extern const u32bit CAST_SBOX4[256]; } #endif