repo2/atari_chips/pokeyv2/rehashr/md4.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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// This free implementation is based on the free original implementation of
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// RSA Data Security. The source has been heavily modified to integrate
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// to ReHash.
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// Here's the original header:
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/*
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Copyright (C) 1990-2, RSA Data Security, Inc. All rights reserved.
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License to copy and use this software is granted provided that it
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is identified as the "RSA Data Security, Inc. MD4 Message-Digest
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Algorithm" in all material mentioning or referencing this software
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or this function.
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License is also granted to make and use derivative works provided
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that such works are identified as "derived from the RSA Data
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Security, Inc. MD4 Message-Digest Algorithm" in all material
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mentioning or referencing the derived work.
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RSA Data Security, Inc. makes no representations concerning either
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the merchantability of this software or the suitability of this
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software for any particular purpose. It is provided "as is"
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without express or implied warranty of any kind.
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These notices must be retained in any copies of any part of this
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documentation and/or software.
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*/
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#ifndef ___MD4_H___
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#define ___MD4_H___
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#include "hashalgo.h"
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class CMD4Hash : public CHashAlgorithm
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{
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public:
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CMD4Hash();
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~CMD4Hash();
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const char *GetName() { return "MD4"; }
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const char *GetShortName() { return "md4"; }
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UINTPREF GetLength() { return 16; }
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UINTPREF GetInternalLength() { return 64; }
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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) { memcpy(pHash, m_digest, 16); }
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private:
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void _Transform(UWORD32 *pState, const UWORD8 *pBlock);
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void _Encode(UWORD8 *pOutput, const UWORD32 *pInput, UINTPREF uLen);
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void _Decode(UWORD32 *pOutput, const UWORD8 *pInput, UINTPREF uLen);
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UWORD32 m_state[4];
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UWORD32 m_count[2];
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UWORD8 m_buffer[64];
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UWORD8 m_digest[16];
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};
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#endif // ___MD4_H___
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