00001 /* 00002 Copyright (C) 1999, 2002 Aladdin Enterprises. All rights reserved. 00003 00004 This software is provided 'as-is', without any express or implied 00005 warranty. In no event will the authors be held liable for any damages 00006 arising from the use of this software. 00007 00008 Permission is granted to anyone to use this software for any purpose, 00009 including commercial applications, and to alter it and redistribute it 00010 freely, subject to the following restrictions: 00011 00012 1. The origin of this software must not be misrepresented; you must not 00013 claim that you wrote the original software. If you use this software 00014 in a product, an acknowledgment in the product documentation would be 00015 appreciated but is not required. 00016 2. Altered source versions must be plainly marked as such, and must not be 00017 misrepresented as being the original software. 00018 3. This notice may not be removed or altered from any source distribution. 00019 00020 L. Peter Deutsch 00021 ghost@aladdin.com 00022 00023 */ 00024 00025 /* 00026 Independent implementation of MD5 (RFC 1321). 00027 00028 This code implements the MD5 Algorithm defined in RFC 1321, whose 00029 text is available at 00030 http://www.ietf.org/rfc/rfc1321.txt 00031 The code is derived from the text of the RFC, including the test suite 00032 (section A.5) but excluding the rest of Appendix A. It does not include 00033 any code or documentation that is identified in the RFC as being 00034 copyrighted. 00035 00036 The original and principal author of md5.h is L. Peter Deutsch 00037 <ghost@aladdin.com>. Other authors are noted in the change history 00038 that follows (in reverse chronological order): 00039 00040 2002-04-13 lpd Removed support for non-ANSI compilers; removed 00041 references to Ghostscript; clarified derivation from RFC 1321; 00042 now handles byte order either statically or dynamically. 00043 1999-11-04 lpd Edited comments slightly for automatic TOC extraction. 00044 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5); 00045 added conditionalization for C++ compilation from Martin 00046 Purschke <purschke@bnl.gov>. 00047 1999-05-03 lpd Original version. 00048 */ 00049 00050 #ifndef md5_INCLUDED 00051 # define md5_INCLUDED 00052 /** @cond DEV */ 00053 00054 /* 00055 * This package supports both compile-time and run-time determination of CPU 00056 * byte order. If ARCH_IS_BIG_ENDIAN is defined as 0, the code will be 00057 * compiled to run only on little-endian CPUs; if ARCH_IS_BIG_ENDIAN is 00058 * defined as non-zero, the code will be compiled to run only on big-endian 00059 * CPUs; if ARCH_IS_BIG_ENDIAN is not defined, the code will be compiled to 00060 * run on either big- or little-endian CPUs, but will run slightly less 00061 * efficiently on either one than if ARCH_IS_BIG_ENDIAN is defined. 00062 */ 00063 00064 typedef unsigned char md5_byte_t; /* 8-bit byte */ 00065 typedef unsigned int md5_word_t; /* 32-bit word */ 00066 00067 /* Define the state of the MD5 Algorithm. */ 00068 typedef struct md5_state_s { 00069 md5_word_t count[2]; /* message length in bits, lsw first */ 00070 md5_word_t abcd[4]; /* digest buffer */ 00071 md5_byte_t buf[64]; /* accumulate block */ 00072 } md5_state_t; 00073 00074 #ifdef __cplusplus 00075 extern "C" 00076 { 00077 #endif 00078 00079 /* Initialize the algorithm. */ 00080 void md5_init(md5_state_t *pms); 00081 00082 /* Append a string to the message. */ 00083 void md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes); 00084 00085 /* Finish the message and return the digest. */ 00086 void md5_finish(md5_state_t *pms, md5_byte_t digest[16]); 00087 00088 #ifdef __cplusplus 00089 } /* end extern "C" */ 00090 #endif 00091 00092 /** @endcond */ 00093 #endif /* md5_INCLUDED */