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011f57e0ec
- Fix for "bug#16755 Please find a SSL library that is FLOSS-Exception / LGPL copyrighted"
86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
/* hash.hpp
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*
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* Copyright (C) 2003 Sawtooth Consulting Ltd.
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*
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* This file is part of yaSSL.
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*
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* yaSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* There are special exceptions to the terms and conditions of the GPL as it
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* is applied to yaSSL. View the full text of the exception in the file
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* FLOSS-EXCEPTIONS in the directory of this software distribution.
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*
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* yaSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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/* hash.hpp provides a base for digest types
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*/
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#ifndef TAO_CRYPT_HASH_HPP
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#define TAO_CRYPT_HASH_HPP
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#include "misc.hpp"
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namespace TaoCrypt {
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// HASH
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class HASH : public virtual_base {
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public:
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virtual ~HASH() {}
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virtual void Update(const byte*, word32) = 0;
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virtual void Final(byte*) = 0;
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virtual void Init() = 0;
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virtual word32 getBlockSize() const = 0;
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virtual word32 getDigestSize() const = 0;
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};
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// HASH with Transform
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class HASHwithTransform : public HASH {
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public:
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HASHwithTransform(word32 digSz, word32 buffSz);
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virtual ~HASHwithTransform() {}
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virtual ByteOrder getByteOrder() const = 0;
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virtual word32 getPadSize() const = 0;
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virtual void Update(const byte*, word32);
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virtual void Final(byte*);
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word32 GetBitCountLo() const { return loLen_ << 3; }
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word32 GetBitCountHi() const { return (loLen_ >> (8*sizeof(loLen_) - 3)) +
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(hiLen_ << 3); }
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enum { MaxDigestSz = 5, MaxBufferSz = 64 };
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protected:
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typedef word32 HashLengthType;
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word32 buffLen_; // in bytes
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HashLengthType loLen_; // length in bytes
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HashLengthType hiLen_; // length in bytes
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word32 digest_[MaxDigestSz];
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word32 buffer_[MaxBufferSz / sizeof(word32)];
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virtual void Transform() = 0;
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void AddLength(word32);
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};
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} // namespace
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#endif // TAO_CRYPT_HASH_HPP
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