nettle  3.7.3
About: Nettle is a low-level cryptographic library.
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md5.h
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1 /* md5.h
2 
3  The MD5 hash function, described in RFC 1321.
4 
5  Copyright (C) 2001 Niels Möller
6 
7  This file is part of GNU Nettle.
8 
9  GNU Nettle is free software: you can redistribute it and/or
10  modify it under the terms of either:
11 
12  * the GNU Lesser General Public License as published by the Free
13  Software Foundation; either version 3 of the License, or (at your
14  option) any later version.
15 
16  or
17 
18  * the GNU General Public License as published by the Free
19  Software Foundation; either version 2 of the License, or (at your
20  option) any later version.
21 
22  or both in parallel, as here.
23 
24  GNU Nettle is distributed in the hope that it will be useful,
25  but WITHOUT ANY WARRANTY; without even the implied warranty of
26  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27  General Public License for more details.
28 
29  You should have received copies of the GNU General Public License and
30  the GNU Lesser General Public License along with this program. If
31  not, see http://www.gnu.org/licenses/.
32 */
33 
34 #ifndef NETTLE_MD5_H_INCLUDED
35 #define NETTLE_MD5_H_INCLUDED
36 
37 #include "nettle-types.h"
38 
39 #ifdef __cplusplus
40 extern "C" {
41 #endif
42 
43 /* Name mangling */
44 #define md5_init nettle_md5_init
45 #define md5_update nettle_md5_update
46 #define md5_digest nettle_md5_digest
47 
48 #define MD5_DIGEST_SIZE 16
49 #define MD5_BLOCK_SIZE 64
50 /* For backwards compatibility */
51 #define MD5_DATA_SIZE MD5_BLOCK_SIZE
52 
53 /* Digest is kept internally as 4 32-bit words. */
54 #define _MD5_DIGEST_LENGTH 4
55 
56 struct md5_ctx
57 {
59  uint64_t count; /* Block count */
60  unsigned index; /* Into buffer */
61  uint8_t block[MD5_BLOCK_SIZE]; /* Block buffer */
62 };
63 
64 void
65 md5_init(struct md5_ctx *ctx);
66 
67 void
68 md5_update(struct md5_ctx *ctx,
69  size_t length,
70  const uint8_t *data);
71 
72 void
73 md5_digest(struct md5_ctx *ctx,
74  size_t length,
75  uint8_t *digest);
76 
77 /* Internal compression function. STATE points to 4 uint32_t words,
78  and DATA points to 64 bytes of input data, possibly unaligned. */
79 void
80 nettle_md5_compress(uint32_t *state, const uint8_t *data);
81 
82 #define _nettle_md5_compress nettle_md5_compress
83 
84 #ifdef __cplusplus
85 }
86 #endif
87 
88 #endif /* NETTLE_MD5_H_INCLUDED */
#define _MD5_DIGEST_LENGTH
Definition: md5.h:54
#define MD5_BLOCK_SIZE
Definition: md5.h:49
#define md5_digest
Definition: md5.h:46
#define md5_update
Definition: md5.h:45
void nettle_md5_compress(uint32_t *state, const uint8_t *data)
Definition: md5-compress.c:82
#define md5_init
Definition: md5.h:44
Definition: md5.h:57
unsigned index
Definition: md5.h:60
uint32_t state[4]
Definition: md5.h:58
uint64_t count
Definition: md5.h:59
uint8_t block[64]
Definition: md5.h:61