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1 | /* |
2 | Copyright (C) 1999, 2002 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 | /* $Id$ */ | |
25 | /* | |
26 | Independent implementation of MD5 (RFC 1321). | |
27 | ||
28 | This code implements the MD5 Algorithm defined in RFC 1321, whose | |
29 | text is available at | |
30 | http://www.ietf.org/rfc/rfc1321.txt | |
31 | The code is derived from the text of the RFC, including the test suite | |
32 | (section A.5) but excluding the rest of Appendix A. It does not include | |
33 | any code or documentation that is identified in the RFC as being | |
34 | copyrighted. | |
35 | ||
36 | The original and principal author of md5.h is L. Peter Deutsch | |
37 | <ghost@aladdin.com>. Other authors are noted in the change history | |
38 | that follows (in reverse chronological order): | |
39 | ||
40 | 2002-04-13 lpd Removed support for non-ANSI compilers; removed | |
41 | references to Ghostscript; clarified derivation from RFC 1321; | |
42 | now handles byte order either statically or dynamically. | |
43 | 1999-11-04 lpd Edited comments slightly for automatic TOC extraction. | |
44 | 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5); | |
45 | added conditionalization for C++ compilation from Martin | |
46 | Purschke <purschke@bnl.gov>. | |
47 | 1999-05-03 lpd Original version. | |
48 | */ | |
49 | ||
50 | #ifndef md5_INCLUDED | |
51 | # define md5_INCLUDED | |
52 | ||
53 | /* | |
54 | * This package supports both compile-time and run-time determination of CPU | |
55 | * byte order. If ARCH_IS_BIG_ENDIAN is defined as 0, the code will be | |
56 | * compiled to run only on little-endian CPUs; if ARCH_IS_BIG_ENDIAN is | |
57 | * defined as non-zero, the code will be compiled to run only on big-endian | |
58 | * CPUs; if ARCH_IS_BIG_ENDIAN is not defined, the code will be compiled to | |
59 | * run on either big- or little-endian CPUs, but will run slightly less | |
60 | * efficiently on either one than if ARCH_IS_BIG_ENDIAN is defined. | |
61 | */ | |
62 | ||
63 | typedef unsigned char md5_byte_t; /* 8-bit byte */ | |
64 | typedef unsigned int md5_word_t; /* 32-bit word */ | |
65 | ||
66 | /* Define the state of the MD5 Algorithm. */ | |
67 | typedef struct md5_state_s { | |
68 | md5_word_t count[2]; /* message length in bits, lsw first */ | |
69 | md5_word_t abcd[4]; /* digest buffer */ | |
70 | md5_byte_t buf[64]; /* accumulate block */ | |
71 | } md5_state_t; | |
72 | ||
73 | #ifdef __cplusplus | |
74 | extern "C" | |
75 | { | |
76 | #endif | |
77 | ||
78 | /* Initialize the algorithm. */ | |
79 | void md5_init(md5_state_t *pms); | |
80 | ||
81 | /* Append a string to the message. */ | |
82 | void md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes); | |
83 | ||
84 | /* Finish the message and return the digest. */ | |
85 | void md5_finish(md5_state_t *pms, md5_byte_t digest[16]); | |
86 | ||
87 | #ifdef __cplusplus | |
88 | } /* end extern "C" */ | |
89 | #endif | |
90 | ||
91 | #endif /* md5_INCLUDED */ |