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/* $Id$ */ |
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/** @file md5.h Functions to create MD5 checksums. */ |
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/* |
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Copyright (C) 1999, 2002 Aladdin Enterprises. All rights reserved. |
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This software is provided 'as-is', without any express or implied |
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warranty. In no event will the authors be held liable for any damages |
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arising from the use of this software. |
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Permission is granted to anyone to use this software for any purpose, |
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including commercial applications, and to alter it and redistribute it |
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freely, subject to the following restrictions: |
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1. The origin of this software must not be misrepresented; you must not |
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claim that you wrote the original software. If you use this software |
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in a product, an acknowledgment in the product documentation would be |
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appreciated but is not required. |
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2. Altered source versions must be plainly marked as such, and must not be |
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misrepresented as being the original software. |
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3. This notice may not be removed or altered from any source distribution. |
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L. Peter Deutsch |
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ghost@aladdin.com |
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*/ |
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/* |
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Independent implementation of MD5 (RFC 1321). |
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This code implements the MD5 Algorithm defined in RFC 1321, whose |
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text is available at |
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http://www.ietf.org/rfc/rfc1321.txt |
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The code is derived from the text of the RFC, including the test suite |
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(section A.5) but excluding the rest of Appendix A. It does not include |
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any code or documentation that is identified in the RFC as being |
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copyrighted. |
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The original and principal author of md5.h is L. Peter Deutsch |
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<ghost@aladdin.com>. Other authors are noted in the change history |
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that follows (in reverse chronological order): |
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2007-12-24 Changed to C++ and adapted to OpenTTD source |
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2002-04-13 lpd Removed support for non-ANSI compilers; removed |
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references to Ghostscript; clarified derivation from RFC 1321; |
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now handles byte order either statically or dynamically. |
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1999-11-04 lpd Edited comments slightly for automatic TOC extraction. |
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1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5); |
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added conditionalization for C++ compilation from Martin |
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Purschke <purschke@bnl.gov>. |
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1999-05-03 lpd Original version. |
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*/ |
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#ifndef MD5_INCLUDED |
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#define MD5_INCLUDED |
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/* |
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* This package supports both compile-time and run-time determination of CPU |
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* byte order. If ARCH_IS_BIG_ENDIAN is defined as 0, the code will be |
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* compiled to run only on little-endian CPUs; if ARCH_IS_BIG_ENDIAN is |
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* defined as non-zero, the code will be compiled to run only on big-endian |
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* CPUs; if ARCH_IS_BIG_ENDIAN is not defined, the code will be compiled to |
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* run on either big- or little-endian CPUs, but will run slightly less |
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* efficiently on either one than if ARCH_IS_BIG_ENDIAN is defined. |
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*/ |
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struct Md5 { |
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private: |
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uint32 count[2]; ///< message length in bits, lsw first |
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uint32 abcd[4]; ///< digest buffer |
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uint8 buf[64]; ///< accumulate block |
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void Process(const uint8 *data); |
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public: |
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Md5(); |
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void Append(const void *data, const size_t nbytes); |
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void Finish(uint8 digest[16]); |
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}; |
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#endif /* MD5_INCLUDED */ |