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# ext/digest/md5/md5.h

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    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 /* $OrigId: md5.h,v 1.2 2001/03/26 08:57:14 matz Exp $ */
    00043 /* $RoughId: md5.h,v 1.3 2002/02/24 08:14:31 knu Exp $ */
    00044 /* $Id: md5.h 28341 2010-06-16 09:38:14Z knu $ */
    00045
    00046 #ifndef MD5_INCLUDED
    00047 #  define MD5_INCLUDED
    00048
    00049 #include "../defs.h"
    00050
    00051 /*
    00052  * This code has some adaptations for the Ghostscript environment, but it
    00053  * will compile and run correctly in any environment with 8-bit chars and
    00054  * 32-bit ints.  Specifically, it assumes that if the following are
    00055  * defined, they have the same meaning as in Ghostscript: P1, P2, P3.
    00056  */
    00057
    00058 /* Define the state of the MD5 Algorithm. */
    00059 typedef struct md5_state_s {
    00060     uint32_t count[2];  /* message length in bits, lsw first */
    00061     uint32_t state[4];  /* digest buffer */
    00062     uint8_t buffer[64]; /* accumulate block */
    00063 } MD5_CTX;
    00064
    00065 #ifdef RUBY
    00066 /* avoid name clash */
    00067 #define MD5_Init        rb_Digest_MD5_Init
    00068 #define MD5_Update      rb_Digest_MD5_Update
    00069 #define MD5_Finish      rb_Digest_MD5_Finish
    00070 #endif
    00071
    00072 void    MD5_Init _((MD5_CTX *pms));
    00073 void    MD5_Update _((MD5_CTX *pms, const uint8_t *data, size_t nbytes));
    00074 void    MD5_Finish _((MD5_CTX *pms, uint8_t *digest));
    00075
    00076 #define MD5_BLOCK_LENGTH                64
    00077 #define MD5_DIGEST_LENGTH               16
    00078 #define MD5_DIGEST_STRING_LENGTH        (MD5_DIGEST_LENGTH * 2 + 1)
    00079
    00080 #endif /* MD5_INCLUDED */
    00081