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

00001 /* sha.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 /* sha.hpp provides SHA-1 digests, see RFC 3174
00027 */
00028 
00029 #ifndef TAO_CRYPT_SHA_HPP
00030 #define TAO_CRYPT_SHA_HPP
00031 
00032 #include "hash.hpp"
00033 
00034 namespace TaoCrypt {
00035 
00036 
00037 // SHA-1 digest
00038 class SHA : public HASHwithTransform {
00039 public:
00040     enum { BLOCK_SIZE = 64, DIGEST_SIZE = 20, PAD_SIZE = 56,
00041            TAO_BYTE_ORDER = BigEndianOrder};   // in Bytes
00042     SHA() : HASHwithTransform(DIGEST_SIZE / sizeof(word32), BLOCK_SIZE)
00043                 { Init(); }
00044     ByteOrder getByteOrder()  const { return ByteOrder(TAO_BYTE_ORDER); }
00045     word32    getBlockSize()  const { return BLOCK_SIZE; }
00046     word32    getDigestSize() const { return DIGEST_SIZE; }
00047     word32    getPadSize()    const { return PAD_SIZE; }
00048 
00049     void Update(const byte* data, word32 len);
00050     void Init();
00051 
00052     SHA(const SHA&);
00053     SHA& operator= (const SHA&);
00054 
00055     void Swap(SHA&);
00056 private:
00057     void Transform();
00058     void AsmTransform(const byte* data, word32 times);
00059 };
00060 
00061 
00062 inline void swap(SHA& a, SHA& b)
00063 {
00064     a.Swap(b);
00065 }
00066 
00067 } // namespace
00068 
00069 
00070 #endif // TAO_CRYPT_SHA_HPP
00071
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