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/* hash.hpp
*
* Copyright (C) 2003 Sawtooth Consulting Ltd.
*
* This file is part of yaSSL.
*
* yaSSL 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; either version 2 of the License, or
* (at your option) any later version.
*
* yaSSL 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; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/* hash.hpp provides a base for digest types
*/
#ifndef TAO_CRYPT_HASH_HPP
#define TAO_CRYPT_HASH_HPP
#include "misc.hpp"
namespace TaoCrypt {
// HASH
class HASH : public virtual_base {
public:
virtual ~HASH() {}
virtual void Update(const byte*, word32) = 0;
virtual void Final(byte*) = 0;
virtual void Init() = 0;
virtual word32 getBlockSize() const = 0;
virtual word32 getDigestSize() const = 0;
};
// HASH with Transform
class HASHwithTransform : public HASH {
public:
HASHwithTransform(word32 digSz, word32 buffSz)
: digest_(new (tc) word32[digSz]), buffer_(new (tc) byte[buffSz]) {}
virtual ~HASHwithTransform() { tcArrayDelete(buffer_);
tcArrayDelete(digest_); }
virtual ByteOrder getByteOrder() const = 0;
virtual word32 getPadSize() const = 0;
virtual void Update(const byte*, word32);
virtual void Final(byte*);
protected:
word32 buffLen_;
word32 length_; // in Bits
word32* digest_;
byte* buffer_;
virtual void Transform() = 0;
};
} // namespace
#endif // TAO_CRYPT_HASH_HPP
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