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/home/salem/libmsn/tags/libmsn-4.2/msn/md5.h

    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 /*$Id: md5.h,v 1.3 2002/10/11 06:49:22 jtownsend Exp $ */
    00025 /*
    00026   Independent implementation of MD5 (RFC 1321).
    00027
    00028   This code implements the MD5 Algorithm defined in RFC 1321.
    00029   It is derived directly from the text of the RFC and not from the
    00030   reference implementation.
    00031
    00032   The original and principal author of md5.h is L. Peter Deutsch
    00033   <ghost@aladdin.com>.  Other authors are noted in the change history
    00034   that follows (in reverse chronological order):
    00035
    00036   1999-11-04 lpd Edited comments slightly for automatic TOC extraction.
    00037   1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5);
    00038   added conditionalization for C++ compilation from Martin
    00039   Purschke <purschke@bnl.gov>.
    00040   1999-05-03 lpd Original version.
    00041  */
    00042
    00043 #ifndef md5_INCLUDED
    00044 #  define md5_INCLUDED
    00045
    00046 /*
    00047  * This code has some adaptations for the Ghostscript environment, but it
    00048  * will compile and run correctly in any environment with 8-bit chars and
    00049  * 32-bit ints.  Specifically, it assumes that if the following are
    00050  * defined, they have the same meaning as in Ghostscript: P1, P2, P3,
    00051  * ARCH_IS_BIG_ENDIAN.
    00052  */
    00053
    00054 typedef unsigned char md5_byte_t; /* 8-bit byte */
    00055 typedef unsigned int md5_word_t; /* 32-bit word */
    00056
    00057 /* Define the state of the MD5 Algorithm. */
    00058 typedef struct md5_state_s {
    00059     md5_word_t count[2];    /* message length in bits, lsw first */
    00060     md5_word_t abcd[4];     /* digest buffer */
    00061     md5_byte_t buf[64];     /* accumulate block */
    00062 } md5_state_t;
    00063
    00064 #ifdef __cplusplus
    00065 extern "C"
    00066 {
    00067 #endif
    00068
    00069 /* Initialize the algorithm. */
    00070 #ifdef P1
    00071 void md5_init(P1(md5_state_t *pms));
    00072 #else
    00073 void md5_init(md5_state_t *pms);
    00074 #endif
    00075
    00076 /* Append a string to the message. */
    00077 #ifdef P3
    00078 void md5_append(P3(md5_state_t *pms, const md5_byte_t *data, int nbytes));
    00079 #else
    00080 void md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes);
    00081 #endif
    00082
    00083 /* Finish the message and return the digest. */
    00084 #ifdef P2
    00085 void md5_finish(P2(md5_state_t *pms, md5_byte_t digest[16]));
    00086 #else
    00087 void md5_finish(md5_state_t *pms, md5_byte_t digest[16]);
    00088 #endif
    00089
    00090 #ifdef __cplusplus
    00091 }  /* end extern "C" */
    00092 #endif
    00093
    00094 #endif /* md5_INCLUDED */

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