repo2/atari_chips/pokeyv2/rehashr/adler32.h
| 1211 | markw | /*
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Copyright (c) 2003, Dominik Reichl <dominik.reichl@t-online.de>
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All rights reserved.
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LICENSE TERMS
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of ReichlSoft nor the names of its contributors may be used
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to endorse or promote products derived from this software without specific
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prior written permission.
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DISCLAIMER
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef ___ADLER32_H___
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#define ___ADLER32_H___
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#include "hashalgo.h"
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class CAdler32Hash : public CHashAlgorithm
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{
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public:
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CAdler32Hash();
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~CAdler32Hash();
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const char *GetName() { return "Adler32"; }
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const char *GetShortName() { return "adler32"; }
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UINTPREF GetLength() { return 4; }
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UINTPREF GetInternalLength() { return 4; }
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void Init(RH_DATA_INFO *pInfo);
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void Update(const UWORD8 *pBuf, UINTPREF uLen);
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void Final();
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void GetHash(UWORD8 *pHash) { STORE32H(m_adler, pHash); }
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private:
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UWORD32 m_s1;
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UWORD32 m_s2;
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UWORD32 m_adler;
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};
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#endif // ___ADLER32_H___
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