Botan  1.11.15
src/lib/block/cast/cast128.h
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00001 /*
00002 * CAST-128
00003 * (C) 1999-2007 Jack Lloyd
00004 *
00005 * Botan is released under the Simplified BSD License (see license.txt)
00006 */
00007 
00008 #ifndef BOTAN_CAST128_H__
00009 #define BOTAN_CAST128_H__
00010 
00011 #include <botan/block_cipher.h>
00012 
00013 namespace Botan {
00014 
00015 /**
00016 * CAST-128
00017 */
00018 class BOTAN_DLL CAST_128 : public Block_Cipher_Fixed_Params<8, 11, 16>
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-128"; }
00026       BlockCipher* clone() const { return new CAST_128; }
00027 
00028    private:
00029       void key_schedule(const byte[], size_t);
00030 
00031       static void cast_ks(secure_vector<u32bit>& ks,
00032                           secure_vector<u32bit>& user_key);
00033 
00034       secure_vector<u32bit> MK;
00035       secure_vector<byte> RK;
00036    };
00037 
00038 }
00039 
00040 #endif