1 /* $OpenBSD: digest.h,v 1.1 2014/01/09 23:20:00 djm Exp $ */
3 * Copyright (c) 2013 Damien Miller <djm@mindrot.org>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 /* Maximum digest output length */
22 #define SSH_DIGEST_MAX_LENGTH 64
24 /* Digest algorithms */
25 #define SSH_DIGEST_MD5 0
26 #define SSH_DIGEST_RIPEMD160 1
27 #define SSH_DIGEST_SHA1 2
28 #define SSH_DIGEST_SHA256 3
29 #define SSH_DIGEST_SHA384 4
30 #define SSH_DIGEST_SHA512 5
31 #define SSH_DIGEST_MAX 6
33 /* Returns the algorithm's digest length in bytes or 0 for invalid algorithm */
34 size_t ssh_digest_bytes(int alg);
37 int ssh_digest_memory(int alg, const void *m, size_t mlen,
38 u_char *d, size_t dlen)
39 __attribute__((__bounded__(__buffer__, 2, 3)))
40 __attribute__((__bounded__(__buffer__, 4, 5)));
41 int ssh_digest_buffer(int alg, const Buffer *b, u_char *d, size_t dlen)
42 __attribute__((__bounded__(__buffer__, 3, 4)));
45 struct ssh_digest_ctx;
46 struct ssh_digest_ctx *ssh_digest_start(int alg);
47 int ssh_digest_update(struct ssh_digest_ctx *ctx, const void *m, size_t mlen)
48 __attribute__((__bounded__(__buffer__, 2, 3)));
49 int ssh_digest_update_buffer(struct ssh_digest_ctx *ctx, const Buffer *b);
50 int ssh_digest_final(struct ssh_digest_ctx *ctx, u_char *d, size_t dlen)
51 __attribute__((__bounded__(__buffer__, 2, 3)));
52 void ssh_digest_free(struct ssh_digest_ctx *ctx);
54 #endif /* _DIGEST_H */