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
|
/* $OpenBSD: hmac.h,v 1.9 2014/06/24 01:13:21 djm Exp $ */
/*
* Copyright (c) 2014 Markus Friedl. All rights reserved.
*
* 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 _HMAC_H
#define _HMAC_H
/* Returns the algorithm's digest length in bytes or 0 for invalid algorithm */
size_t ssh_hmac_bytes(int alg);
struct sshbuf;
struct ssh_hmac_ctx;
struct ssh_hmac_ctx *ssh_hmac_start(int alg);
/* Sets the state of the HMAC or resets the state if key == NULL */
int ssh_hmac_init(struct ssh_hmac_ctx *ctx, const void *key, size_t klen)
__attribute__((__bounded__(__buffer__, 2, 3)));
int ssh_hmac_update(struct ssh_hmac_ctx *ctx, const void *m, size_t mlen)
__attribute__((__bounded__(__buffer__, 2, 3)));
int ssh_hmac_update_buffer(struct ssh_hmac_ctx *ctx, const struct sshbuf *b);
int ssh_hmac_final(struct ssh_hmac_ctx *ctx, u_char *d, size_t dlen)
__attribute__((__bounded__(__buffer__, 2, 3)));
void ssh_hmac_free(struct ssh_hmac_ctx *ctx);
#endif /* _HMAC_H */
|
