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/*
Copyright (C) 2000-2007 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
MA 02110-1301 USA.
*/
/* sha.hpp provides SHA-1 digests, see RFC 3174
*/
#ifndef TAO_CRYPT_SHA_HPP
#define TAO_CRYPT_SHA_HPP
#include "hash.hpp"
#if defined(TAOCRYPT_X86ASM_AVAILABLE) && defined(TAO_ASM)
#define DO_SHA_ASM
#endif
namespace TaoCrypt {
// SHA-1 digest
class SHA : public HASHwithTransform {
public:
enum { BLOCK_SIZE = 64, DIGEST_SIZE = 20, PAD_SIZE = 56,
TAO_BYTE_ORDER = BigEndianOrder}; // in Bytes
SHA() : HASHwithTransform(DIGEST_SIZE / sizeof(word32), BLOCK_SIZE)
{ Init(); }
ByteOrder getByteOrder() const { return ByteOrder(TAO_BYTE_ORDER); }
word32 getBlockSize() const { return BLOCK_SIZE; }
word32 getDigestSize() const { return DIGEST_SIZE; }
word32 getPadSize() const { return PAD_SIZE; }
#ifdef DO_SHA_ASM
void Update(const byte* data, word32 len);
#endif
void Init();
SHA(const SHA&);
SHA& operator= (const SHA&);
void Swap(SHA&);
private:
void Transform();
void AsmTransform(const byte* data, word32 times);
};
inline void swap(SHA& a, SHA& b)
{
a.Swap(b);
}
} // namespace
#endif // TAO_CRYPT_SHA_HPP
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