Botan  1.11.15
src/lib/block/cast/cast256.h
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00001 /*
00002 * CAST-256
00003 * (C) 1999-2007 Jack Lloyd
00004 *
00005 * Botan is released under the Simplified BSD License (see license.txt)
00006 */
00007 
00008 #ifndef BOTAN_CAST256_H__
00009 #define BOTAN_CAST256_H__
00010 
00011 #include <botan/block_cipher.h>
00012 
00013 namespace Botan {
00014 
00015 /**
00016 * CAST-256
00017 */
00018 class BOTAN_DLL CAST_256 : public Block_Cipher_Fixed_Params<16, 4, 32, 4>
00019    {
00020    public:
00021       void encrypt_n(const byte in[], byte out[], size_t blocks) const;
00022       void decrypt_n(const byte in[], byte out[], size_t blocks) const;
00023 
00024       void clear();
00025       std::string name() const { return "CAST-256"; }
00026       BlockCipher* clone() const { return new CAST_256; }
00027    private:
00028       void key_schedule(const byte[], size_t);
00029 
00030       secure_vector<u32bit> MK;
00031       secure_vector<byte> RK;
00032    };
00033 
00034 }
00035 
00036 #endif