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MySQL 5.1: mysql/src/5.1-dbg/extra/yassl/taocrypt/include/blowfish.hpp Source File
mysql/src/5.1-dbg/extra/yassl/taocrypt/include/blowfish.hpp

00001 /* blowfish.hpp                                
00002  *
00003  * Copyright (C) 2003 Sawtooth Consulting Ltd.
00004  *
00005  * This file is part of yaSSL.
00006  *
00007  * yaSSL is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 2 of the License, or
00010  * (at your option) any later version.
00011  *
00012  * There are special exceptions to the terms and conditions of the GPL as it
00013  * is applied to yaSSL. View the full text of the exception in the file
00014  * FLOSS-EXCEPTIONS in the directory of this software distribution.
00015  *
00016  * yaSSL is distributed in the hope that it will be useful,
00017  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00018  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019  * GNU General Public License for more details.
00020  *
00021  * You should have received a copy of the GNU General Public License
00022  * along with this program; if not, write to the Free Software
00023  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
00024  */
00025 
00026 /* blowfish.hpp defines Blowfish
00027 */
00028 
00029 
00030 #ifndef TAO_CRYPT_BLOWFISH_HPP
00031 #define TAO_CRYPT_BLOWFISH_HPP
00032 
00033 #include "misc.hpp"
00034 #include "modes.hpp"
00035 #include "algorithm.hpp"
00036 
00037 namespace TaoCrypt {
00038 
00039 enum { BLOWFISH_BLOCK_SIZE = 8 };
00040 
00041 
00042 // Blowfish encryption and decryption, see 
00043 class Blowfish : public Mode_BASE {
00044 public:
00045     enum { BLOCK_SIZE = BLOWFISH_BLOCK_SIZE, ROUNDS = 16 };
00046 
00047     Blowfish(CipherDir DIR, Mode MODE)
00048         : Mode_BASE(BLOCK_SIZE), dir_(DIR), mode_(MODE) {}
00049 
00050     void Process(byte*, const byte*, word32);
00051     void SetKey(const byte* key, word32 sz, CipherDir fake = ENCRYPTION);
00052     void SetIV(const byte* iv) { memcpy(r_, iv, BLOCK_SIZE); }
00053 private:
00054     CipherDir dir_;
00055     Mode      mode_;
00056 
00057         static const word32 p_init_[ROUNDS + 2];
00058         static const word32 s_init_[4 * 256];
00059 
00060         word32 pbox_[ROUNDS + 2];
00061         word32 sbox_[4 * 256];
00062 
00063     void crypt_block(const word32 in[2], word32 out[2]) const;
00064     void AsmProcess(const byte* in, byte* out) const;
00065     void ProcessAndXorBlock(const byte*, const byte*, byte*) const;
00066 
00067     Blowfish(const Blowfish&);            // hide copy
00068     Blowfish& operator=(const Blowfish&); // and assign
00069 };
00070 
00071 
00072 typedef BlockCipher<ENCRYPTION, Blowfish, ECB> Blowfish_ECB_Encryption;
00073 typedef BlockCipher<DECRYPTION, Blowfish, ECB> Blowfish_ECB_Decryption;
00074 
00075 typedef BlockCipher<ENCRYPTION, Blowfish, CBC> Blowfish_CBC_Encryption;
00076 typedef BlockCipher<DECRYPTION, Blowfish, CBC> Blowfish_CBC_Decryption;
00077 
00078 
00079 
00080 } // naemspace
00081 
00082 #endif // TAO_CRYPT_BLOWFISH_HPP
00083
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