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b5bc2a8c | 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 | /*$Id$ */ | |
25 | /* | |
26 | Independent implementation of MD5 (RFC 1321). | |
27 | ||
28 | This code implements the MD5 Algorithm defined in RFC 1321. | |
29 | It is derived directly from the text of the RFC and not from the | |
30 | reference implementation. | |
31 | ||
32 | The original and principal author of md5.h is L. Peter Deutsch | |
33 | <ghost@aladdin.com>. Other authors are noted in the change history | |
34 | that follows (in reverse chronological order): | |
35 | ||
36 | 1999-11-04 lpd Edited comments slightly for automatic TOC extraction. | |
37 | 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5); | |
38 | added conditionalization for C++ compilation from Martin | |
39 | Purschke <purschke@bnl.gov>. | |
40 | 1999-05-03 lpd Original version. | |
41 | */ | |
42 | ||
43 | #ifndef md5_INCLUDED | |
44 | # define md5_INCLUDED | |
45 | ||
46 | /* | |
47 | * This code has some adaptations for the Ghostscript environment, but it | |
48 | * will compile and run correctly in any environment with 8-bit chars and | |
49 | * 32-bit ints. Specifically, it assumes that if the following are | |
50 | * defined, they have the same meaning as in Ghostscript: P1, P2, P3, | |
51 | * ARCH_IS_BIG_ENDIAN. | |
52 | */ | |
53 | ||
54 | typedef unsigned char md5_byte_t; /* 8-bit byte */ | |
55 | typedef unsigned int md5_word_t; /* 32-bit word */ | |
56 | ||
57 | /* Define the state of the MD5 Algorithm. */ | |
58 | typedef struct md5_state_s { | |
59 | md5_word_t count[2]; /* message length in bits, lsw first */ | |
60 | md5_word_t abcd[4]; /* digest buffer */ | |
61 | md5_byte_t buf[64]; /* accumulate block */ | |
62 | } md5_state_t; | |
63 | ||
64 | #ifdef __cplusplus | |
65 | extern "C" | |
66 | { | |
67 | #endif | |
68 | ||
69 | /* Initialize the algorithm. */ | |
70 | #ifdef P1 | |
71 | void md5_init(P1(md5_state_t *pms)); | |
72 | #else | |
73 | void md5_init(md5_state_t *pms); | |
74 | #endif | |
75 | ||
76 | /* Append a string to the message. */ | |
77 | #ifdef P3 | |
78 | void md5_append(P3(md5_state_t *pms, const md5_byte_t *data, int nbytes)); | |
79 | #else | |
80 | void md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes); | |
81 | #endif | |
82 | ||
83 | /* Finish the message and return the digest. */ | |
84 | #ifdef P2 | |
85 | void md5_finish(P2(md5_state_t *pms, md5_byte_t digest[16])); | |
86 | #else | |
87 | void md5_finish(md5_state_t *pms, md5_byte_t digest[16]); | |
88 | #endif | |
89 | ||
90 | #ifdef __cplusplus | |
91 | } /* end extern "C" */ | |
92 | #endif | |
93 | ||
94 | #endif /* md5_INCLUDED */ |