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 This code implements the MD5 Algorithm defined in RFC 1321. 00026 It is derived directly from the text of the RFC and not from the 00027 reference implementation. 00028 00029 The original and principal author of ansi2knr is L. Peter Deutsch 00030 <ghost@aladdin.com>. Other authors are noted in the change history 00031 that follows (in reverse chronological order): 00032 00033 1999-05-03 lpd Original version. 00034 */ 00035 /*$Id: gu_md5.h,v 1.1 2002/01/11 18:22:36 chappell Exp $ */ 00036 00037 #ifndef md5_INCLUDED 00038 # define md5_INCLUDED 00039 00040 /* 00041 * This code has some adaptations for the Ghostscript environment, but it 00042 * will compile and run correctly in any environment with 8-bit chars and 00043 * 32-bit ints. Specifically, it assumes that if the following are 00044 * defined, they have the same meaning as in Ghostscript: P1, P2, P3, 00045 * ARCH_IS_BIG_ENDIAN. 00046 */ 00047 00048 typedef unsigned char md5_byte_t; /* 8-bit byte */ 00049 typedef unsigned int md5_word_t; /* 32-bit word */ 00050 00051 /* Define the state of the MD5 Algorithm. */ 00052 typedef struct md5_state_s { 00053 md5_word_t count[2]; /* message length in bits, lsw first */ 00054 md5_word_t abcd[4]; /* digest buffer */ 00055 md5_byte_t buf[64]; /* accumulate block */ 00056 } md5_state_t; 00057 00058 /* Initialize the algorithm. */ 00059 #ifdef P1 00060 void md5_init(P1(md5_state_t *pms)); 00061 #else 00062 void md5_init(md5_state_t *pms); 00063 #endif 00064 00065 /* Append a string to the message. */ 00066 #ifdef P3 00067 void md5_append(P3(md5_state_t *pms, const md5_byte_t *data, int nbytes)); 00068 #else 00069 void md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes); 00070 #endif 00071 00072 /* Finish the message and return the digest. */ 00073 #ifdef P2 00074 void md5_finish(P2(md5_state_t *pms, md5_byte_t digest[16])); 00075 #else 00076 void md5_finish(md5_state_t *pms, md5_byte_t digest[16]); 00077 #endif 00078 00079 #endif /* md5_INCLUDED */