repo2/atari_chips/pokeyv2/rehashr/hashalgo.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 ___ABSTRACT_HASH_ALGORITHM_H___
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#define ___ABSTRACT_HASH_ALGORITHM_H___
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#include "rhcommon.h"
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typedef struct _RH_DATA_INFO
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{
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const char *pszFileName;
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UINTPREF uDataLen;
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} RH_DATA_INFO;
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class CHashAlgorithm // Abstract hash algorithm class
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{
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public:
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virtual const char *GetName() = 0; // Full name of the algorithm
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virtual const char *GetShortName() = 0; // Short name of the algorithm
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virtual UINTPREF GetLength() = 0; // Number of bytes of the digest
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virtual UINTPREF GetInternalLength() = 0; // Internal buffer size
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virtual void Init(RH_DATA_INFO *pInfo) = 0; // Initialize
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virtual void Update(const UWORD8 *pBuf, UINTPREF uLen) = 0;
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virtual void Final() = 0; // Call this to finish hashing
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virtual void GetHash(UWORD8 *pHash) = 0; // Get the final digest
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};
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void FillAlgorithmList(CHashAlgorithm **pList);
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#endif // ___ABSTRACT_HASH_ALGORITHM_H___
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