1/*
2  Copyright (C) 1999 Aladdin Enterprises.  All rights reserved.
3
4  This software is provided 'as-is', without any express or implied
5  warranty.  In no event will the authors be held liable for any damages
6  arising from the use of this software.
7
8  Permission is granted to anyone to use this software for any purpose,
9  including commercial applications, and to alter it and redistribute it
10  freely, subject to the following restrictions:
11
12  1. The origin of this software must not be misrepresented; you must not
13     claim that you wrote the original software. If you use this software
14     in a product, an acknowledgment in the product documentation would be
15     appreciated but is not required.
16  2. Altered source versions must be plainly marked as such, and must not be
17     misrepresented as being the original software.
18  3. This notice may not be removed or altered from any source distribution.
19
20  L. Peter Deutsch
21  ghost@aladdin.com
22
23 */
24/*
25  Independent implementation of MD5 (RFC 1321).
26
27  This code implements the MD5 Algorithm defined in RFC 1321.
28  It is derived directly from the text of the RFC and not from the
29  reference implementation.
30
31  The original and principal author of md5.h is L. Peter Deutsch
32  <ghost@aladdin.com>.  Other authors are noted in the change history
33  that follows (in reverse chronological order):
34
35  1999-11-04 lpd Edited comments slightly for automatic TOC extraction.
36  1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5);
37	added conditionalization for C++ compilation from Martin
38	Purschke <purschke@bnl.gov>.
39  1999-05-03 lpd Original version.
40 */
41
42/* $OrigId: md5.h,v 1.2 2001/03/26 08:57:14 matz Exp $ */
43/* $RoughId: md5.h,v 1.3 2002/02/24 08:14:31 knu Exp $ */
44/* $Id: md5.h 25189 2009-10-02 12:04:37Z akr $ */
45
46#ifndef MD5_INCLUDED
47#  define MD5_INCLUDED
48
49#include "defs.h"
50
51/*
52 * This code has some adaptations for the Ghostscript environment, but it
53 * will compile and run correctly in any environment with 8-bit chars and
54 * 32-bit ints.  Specifically, it assumes that if the following are
55 * defined, they have the same meaning as in Ghostscript: P1, P2, P3.
56 */
57
58/* Define the state of the MD5 Algorithm. */
59typedef struct md5_state_s {
60    uint32_t count[2];	/* message length in bits, lsw first */
61    uint32_t state[4];	/* digest buffer */
62    uint8_t buffer[64];	/* accumulate block */
63} MD5_CTX;
64
65#ifdef RUBY
66/* avoid name clash */
67#define MD5_Init	rb_Digest_MD5_Init
68#define MD5_Update	rb_Digest_MD5_Update
69#define MD5_Finish	rb_Digest_MD5_Finish
70#endif
71
72void	MD5_Init _((MD5_CTX *pms));
73void	MD5_Update _((MD5_CTX *pms, const uint8_t *data, size_t nbytes));
74void	MD5_Finish _((MD5_CTX *pms, uint8_t *digest));
75
76#define MD5_BLOCK_LENGTH		64
77#define MD5_DIGEST_LENGTH		16
78#define MD5_DIGEST_STRING_LENGTH	(MD5_DIGEST_LENGTH * 2 + 1)
79
80#endif /* MD5_INCLUDED */
81