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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: md5.h,v 1.2 1997/08/04 10:24:23 mdw Exp $ |
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4 | * |
5 | * MD-5 secure hash routines |
6 | * Based on RSA MD-5 code |
7 | * |
8 | * (c) 1996, 1997 Mark Wooding |
9 | */ |
10 | |
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11 | /*----- Licensing notice --------------------------------------------------* |
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12 | * |
13 | * This file is part of `become' |
14 | * |
15 | * `Become' is free software; you can redistribute it and/or modify |
16 | * it under the terms of the GNU General Public License as published by |
17 | * the Free Software Foundation; either version 2 of the License, or |
18 | * (at your option) any later version. |
19 | * |
20 | * `Become' is distributed in the hope that it will be useful, |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
23 | * GNU General Public License for more details. |
24 | * |
25 | * You should have received a copy of the GNU General Public License |
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26 | * along with `become'; if not, write to the Free Software Foundation, |
27 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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28 | */ |
29 | |
30 | /*----- Revision history --------------------------------------------------* |
31 | * |
32 | * $Log: md5.h,v $ |
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33 | * Revision 1.2 1997/08/04 10:24:23 mdw |
34 | * Sources placed under CVS control. |
35 | * |
36 | * Revision 1.1 1997/07/21 13:47:47 mdw |
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37 | * Initial revision |
38 | * |
39 | */ |
40 | |
41 | #ifndef MD5_H |
42 | #define MD5_H |
43 | |
44 | #ifdef __cplusplus |
45 | extern "C" { |
46 | #endif |
47 | |
48 | /*----- Required headers --------------------------------------------------*/ |
49 | |
50 | #include <stddef.h> |
51 | |
52 | #ifndef CONFIG_H |
53 | # include "config.h" |
54 | #endif |
55 | |
56 | /*----- Useful constants --------------------------------------------------*/ |
57 | |
58 | #define MD5_HASHSIZE (16u) /* Size of an MD5 hash */ |
59 | |
60 | /*----- Type definitions --------------------------------------------------*/ |
61 | |
62 | /* --- MD5 context buffer --- */ |
63 | |
64 | typedef struct { |
65 | uint_32 val[4]; /* Result of the hash function */ |
66 | unsigned long size; /* Current size of data in bytes */ |
67 | unsigned char buf[64]; /* Buffer accumulating next block */ |
68 | } md5; |
69 | |
70 | /*----- Functions provided ------------------------------------------------*/ |
71 | |
72 | /* --- @md5_trans@ --- * |
73 | * |
74 | * Arguments: @unsigned char *v@ = pointer to chaining block (updated) |
75 | * @const unsigned char *buf@ = pointer to input buffer |
76 | * |
77 | * Returns: --- |
78 | * |
79 | * Use: Performs the MD5 transformation on a chunk of data. This may |
80 | * be useful for using MD5 in MDC-type cipher constructions. |
81 | */ |
82 | |
83 | extern void md5_trans(unsigned char */*v*/, const unsigned char */*buf*/); |
84 | |
85 | /* --- @md5_buffer@ --- * |
86 | * |
87 | * Arguments: @md5 *m@ = pointer to an MD5 context |
88 | * @const void *buff@ = pointer to buffer of data |
89 | * @size_t size@ = size of buffer |
90 | * |
91 | * Returns: --- |
92 | * |
93 | * Use: Hashes the buffer of data. You can call md5_buffer |
94 | * lots of times during an MD5 job, to allow big files to be |
95 | * split into little ones. |
96 | * |
97 | * This routine could be improved lots, to compare with the |
98 | * Straylight ARM assembler implementation, although that |
99 | * requires lots of work. Remember that the ARM version |
100 | * doesn't need to do endianness-fiddling. |
101 | */ |
102 | |
103 | extern void md5_buffer(md5 */*m*/, const void */*buff*/, size_t /*size*/); |
104 | |
105 | /* --- @md5_key@ --- * |
106 | * |
107 | * Arguments: @md5 *m@ = pointer to an MD5 context |
108 | * @const unsigned char *k@ = pointer to a 4-word `key' |
109 | * |
110 | * Returns: --- |
111 | * |
112 | * Use: Initialises a context buffer, with a chosen initialisation |
113 | * string (instead of the standard MD5 value). This allows you |
114 | * to use NMAC message authentication, should the urge take you. |
115 | */ |
116 | |
117 | extern void md5_key(md5 */*m*/, const unsigned char */*k*/); |
118 | |
119 | /* --- @md5_init@ --- * |
120 | * |
121 | * Arguments: @md5 *m@ = pointer to an MD5 context |
122 | * |
123 | * Returns: --- |
124 | * |
125 | * Use: Initialises the context buffer, so that you can do an |
126 | * MD5 job. |
127 | */ |
128 | |
129 | extern void md5_init(md5 */*m*/); |
130 | |
131 | /* --- @md5_final@ --- * |
132 | * |
133 | * Arguments: @md5 *m@ = pointer to context buffer |
134 | * @unsigned char *v@ = where to store the value |
135 | * |
136 | * Returns: --- |
137 | * |
138 | * Use: Finalises an MD5 buffer, so that you can use the result. |
139 | */ |
140 | |
141 | extern void md5_final(md5 */*m*/, unsigned char */*v*/); |
142 | |
143 | /*----- That's all, folks -------------------------------------------------*/ |
144 | |
145 | #ifdef __cplusplus |
146 | } |
147 | #endif |
148 | |
149 | #endif |