# md5.h

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    00001 /* $Id: md5.h 12971 2008-05-06 15:11:33Z rubidium $ */
    00002
    00005 /*
    00006   Copyright (C) 1999, 2002 Aladdin Enterprises.  All rights reserved.
    00007
    00008   This software is provided 'as-is', without any express or implied
    00009   warranty.  In no event will the authors be held liable for any damages
    00010   arising from the use of this software.
    00011
    00012   Permission is granted to anyone to use this software for any purpose,
    00013   including commercial applications, and to alter it and redistribute it
    00014   freely, subject to the following restrictions:
    00015
    00016   1. The origin of this software must not be misrepresented; you must not
    00017      claim that you wrote the original software. If you use this software
    00018      in a product, an acknowledgment in the product documentation would be
    00019      appreciated but is not required.
    00020   2. Altered source versions must be plainly marked as such, and must not be
    00021      misrepresented as being the original software.
    00022   3. This notice may not be removed or altered from any source distribution.
    00023
    00024   L. Peter Deutsch
    00025   ghost@aladdin.com
    00026
    00027  */
    00028
    00029 /*
    00030   Independent implementation of MD5 (RFC 1321).
    00031
    00032   This code implements the MD5 Algorithm defined in RFC 1321, whose
    00033   text is available at
    00034   http://www.ietf.org/rfc/rfc1321.txt
    00035   The code is derived from the text of the RFC, including the test suite
    00036   (section A.5) but excluding the rest of Appendix A.  It does not include
    00037   any code or documentation that is identified in the RFC as being
    00038   copyrighted.
    00039
    00040   The original and principal author of md5.h is L. Peter Deutsch
    00041   <ghost@aladdin.com>.  Other authors are noted in the change history
    00042   that follows (in reverse chronological order):
    00043
    00044   2007-12-24 Changed to C++ and adapted to OpenTTD source
    00045   2002-04-13 lpd Removed support for non-ANSI compilers; removed
    00046              references to Ghostscript; clarified derivation from RFC 1321;
    00047              now handles byte order either statically or dynamically.
    00048   1999-11-04 lpd Edited comments slightly for automatic TOC extraction.
    00049   1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5);
    00050              added conditionalization for C++ compilation from Martin
    00051              Purschke <purschke@bnl.gov>.
    00052   1999-05-03 lpd Original version.
    00053  */
    00054
    00055 #ifndef MD5_INCLUDED
    00056 #define MD5_INCLUDED
    00057
    00058 /*
    00059  * This package supports both compile-time and run-time determination of CPU
    00060  * byte order.  If ARCH_IS_BIG_ENDIAN is defined as 0, the code will be
    00061  * compiled to run only on little-endian CPUs; if ARCH_IS_BIG_ENDIAN is
    00062  * defined as non-zero, the code will be compiled to run only on big-endian
    00063  * CPUs; if ARCH_IS_BIG_ENDIAN is not defined, the code will be compiled to
    00064  * run on either big- or little-endian CPUs, but will run slightly less
    00065  * efficiently on either one than if ARCH_IS_BIG_ENDIAN is defined.
    00066  */
    00067
    00068 struct Md5 {
    00069 private:
    00070   uint32 count[2];
    00071   uint32 abcd[4];
    00072   uint8 buf[64];
    00073
    00074   void Process(const uint8 *data);
    00075
    00076 public:
    00077   Md5();
    00078   void Append(const void *data, const size_t nbytes);
    00079   void Finish(uint8 digest[16]);
    00080 };
    00081
    00082 #endif /* MD5_INCLUDED */