00001 /* 00002 Copyright (C) 1999 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 Independent implementation of MD5 (RFC 1321). 00026 00027 This code implements the MD5 Algorithm defined in RFC 1321. 00028 It is derived directly from the text of the RFC and not from the 00029 reference implementation. 00030 00031 The original and principal author of md5.h is L. Peter Deutsch 00032 <ghost@aladdin.com>. Other authors are noted in the change history 00033 that follows (in reverse chronological order): 00034 00035 1999-11-04 lpd Edited comments slightly for automatic TOC extraction. 00036 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5); 00037 added conditionalization for C++ compilation from Martin 00038 Purschke <purschke@bnl.gov>. 00039 1999-05-03 lpd Original version. 00040 */ 00041 00042 #ifndef md5_INCLUDED 00043 # define md5_INCLUDED 00044 00045 /* 00046 * This code has some adaptations for the Ghostscript environment, but it 00047 * will compile and run correctly in any environment with 8-bit chars and 00048 * 32-bit ints. Specifically, it assumes that if the following are 00049 * defined, they have the same meaning as in Ghostscript: P1, P2, P3, 00050 * ARCH_IS_BIG_ENDIAN. 00051 */ 00052 00053 typedef unsigned char md5_byte_t; /* 8-bit byte */ 00054 typedef unsigned int md5_word_t; /* 32-bit word */ 00055 00056 /* Define the state of the MD5 Algorithm. */ 00057 typedef struct md5_state_s { 00058 md5_word_t count[2]; /* message length in bits, lsw first */ 00059 md5_word_t abcd[4]; /* digest buffer */ 00060 md5_byte_t buf[64]; /* accumulate block */ 00061 } md5_state_t; 00062 00063 #ifdef __cplusplus 00064 extern "C" 00065 { 00066 #endif 00067 00068 /* Initialize the algorithm. */ 00069 #ifdef P1 00070 void md5_init(P1(md5_state_t *pms)); 00071 #else 00072 void md5_init(md5_state_t *pms); 00073 #endif 00074 00075 /* Append a string to the message. */ 00076 #ifdef P3 00077 void md5_append(P3(md5_state_t *pms, const md5_byte_t *data, int nbytes)); 00078 #else 00079 void md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes); 00080 #endif 00081 00082 /* Finish the message and return the digest. */ 00083 #ifdef P2 00084 void md5_finish(P2(md5_state_t *pms, md5_byte_t digest[16])); 00085 #else 00086 void md5_finish(md5_state_t *pms, md5_byte_t digest[16]); 00087 #endif 00088 00089 #ifdef __cplusplus 00090 } /* end extern "C" */ 00091 #endif 00092 00093 #endif /* md5_INCLUDED */