1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
/* $OpenBSD: digest.h,v 1.3 2014/03/26 04:55:35 djm Exp $ */
/*
* Copyright (c) 2013 Damien Miller <djm@mindrot.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _DIGEST_H
#define _DIGEST_H
/* Maximum digest output length */
#define SSH_DIGEST_MAX_LENGTH 64
/* Digest algorithms */
#define SSH_DIGEST_MD5 0
#define SSH_DIGEST_RIPEMD160 1
#define SSH_DIGEST_SHA1 2
#define SSH_DIGEST_SHA256 3
#define SSH_DIGEST_SHA384 4
#define SSH_DIGEST_SHA512 5
#define SSH_DIGEST_MAX 6
struct ssh_digest_ctx;
/* Returns the algorithm's digest length in bytes or 0 for invalid algorithm */
size_t ssh_digest_bytes(int alg);
/* Returns the block size of the digest, e.g. for implementing HMAC */
size_t ssh_digest_blocksize(struct ssh_digest_ctx *ctx);
/* Copies internal state of digest of 'from' to 'to' */
int ssh_digest_copy_state(struct ssh_digest_ctx *from,
struct ssh_digest_ctx *to);
/* One-shot API */
int ssh_digest_memory(int alg, const void *m, size_t mlen,
u_char *d, size_t dlen)
__bounded((__buffer__, 2, 3))
__bounded((__buffer__, 4, 5));
int ssh_digest_buffer(int alg, const Buffer *b, u_char *d, size_t dlen)
__bounded((__buffer__, 3, 4));
/* Update API */
struct ssh_digest_ctx *ssh_digest_start(int alg);
int ssh_digest_update(struct ssh_digest_ctx *ctx, const void *m, size_t mlen)
__bounded((__buffer__, 2, 3));
int ssh_digest_update_buffer(struct ssh_digest_ctx *ctx, const Buffer *b);
int ssh_digest_final(struct ssh_digest_ctx *ctx, u_char *d, size_t dlen)
__bounded((__buffer__, 2, 3));
void ssh_digest_free(struct ssh_digest_ctx *ctx);
#endif /* _DIGEST_H */
|
