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

00001 /* aes.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 /* aes.hpp defines AES
00027 */
00028 
00029 
00030 #ifndef TAO_CRYPT_AES_HPP
00031 #define TAO_CRYPT_AES_HPP
00032 
00033 #include "misc.hpp"
00034 #include "modes.hpp"
00035 
00036 
00037 namespace TaoCrypt {
00038 
00039 
00040 enum { AES_BLOCK_SIZE = 16 };
00041 
00042 
00043 // AES encryption and decryption, see FIPS-197
00044 class AES : public Mode_BASE {
00045 public:
00046     enum { BLOCK_SIZE = AES_BLOCK_SIZE };
00047 
00048     AES(CipherDir DIR, Mode MODE)
00049         : Mode_BASE(BLOCK_SIZE), dir_(DIR), mode_(MODE) {}
00050 
00051     void Process(byte*, const byte*, word32);
00052     void SetKey(const byte* key, word32 sz, CipherDir fake = ENCRYPTION);
00053     void SetIV(const byte* iv) { memcpy(r_, iv, BLOCK_SIZE); }
00054 private:
00055     CipherDir dir_;
00056     Mode      mode_;
00057 
00058     static const word32 rcon_[];
00059 
00060     word32      rounds_;
00061     word32      key_[60];                        // max size
00062 
00063     static const word32 Te[5][256];
00064     static const word32 Td[5][256];
00065 
00066     static const word32* Te0;
00067     static const word32* Te1;
00068     static const word32* Te2;
00069     static const word32* Te3;
00070     static const word32* Te4;
00071 
00072     static const word32* Td0;
00073     static const word32* Td1;
00074     static const word32* Td2;
00075     static const word32* Td3;
00076     static const word32* Td4;
00077 
00078     void encrypt(const byte*, const byte*, byte*) const;
00079     void AsmEncrypt(const byte*, byte*, void*) const;
00080     void decrypt(const byte*, const byte*, byte*) const;
00081     void AsmDecrypt(const byte*, byte*, void*) const;
00082 
00083     void ProcessAndXorBlock(const byte*, const byte*, byte*) const;
00084 
00085     AES(const AES&);            // hide copy
00086     AES& operator=(const AES&); // and assign
00087 };
00088 
00089 
00090 typedef BlockCipher<ENCRYPTION, AES, ECB> AES_ECB_Encryption;
00091 typedef BlockCipher<DECRYPTION, AES, ECB> AES_ECB_Decryption;
00092 
00093 typedef BlockCipher<ENCRYPTION, AES, CBC> AES_CBC_Encryption;
00094 typedef BlockCipher<DECRYPTION, AES, CBC> AES_CBC_Decryption;
00095 
00096 
00097 
00098 } // naemspace
00099 
00100 #endif // TAO_CRYPT_AES_HPP
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