Annotation of src/usr.bin/ssh/digest.h, Revision 1.6
1.6 ! djm 1: /* $OpenBSD: digest.h,v 1.5 2014/06/24 01:13:21 djm Exp $ */
1.1 djm 2: /*
3: * Copyright (c) 2013 Damien Miller <djm@mindrot.org>
4: *
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.
8: *
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.
16: */
17:
18: #ifndef _DIGEST_H
19: #define _DIGEST_H
20:
21: /* Maximum digest output length */
22: #define SSH_DIGEST_MAX_LENGTH 64
23:
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
32:
1.6 ! djm 33: struct sshbuf;
1.2 markus 34: struct ssh_digest_ctx;
35:
1.1 djm 36: /* Returns the algorithm's digest length in bytes or 0 for invalid algorithm */
37: size_t ssh_digest_bytes(int alg);
38:
1.2 markus 39: /* Returns the block size of the digest, e.g. for implementing HMAC */
40: size_t ssh_digest_blocksize(struct ssh_digest_ctx *ctx);
41:
42: /* Copies internal state of digest of 'from' to 'to' */
43: int ssh_digest_copy_state(struct ssh_digest_ctx *from,
44: struct ssh_digest_ctx *to);
45:
1.1 djm 46: /* One-shot API */
47: int ssh_digest_memory(int alg, const void *m, size_t mlen,
48: u_char *d, size_t dlen)
1.4 djm 49: __attribute__((__bounded__(__buffer__, 2, 3)))
50: __attribute__((__bounded__(__buffer__, 4, 5)));
1.5 djm 51: int ssh_digest_buffer(int alg, const struct sshbuf *b, u_char *d, size_t dlen)
1.4 djm 52: __attribute__((__bounded__(__buffer__, 3, 4)));
1.1 djm 53:
54: /* Update API */
55: struct ssh_digest_ctx *ssh_digest_start(int alg);
56: int ssh_digest_update(struct ssh_digest_ctx *ctx, const void *m, size_t mlen)
1.4 djm 57: __attribute__((__bounded__(__buffer__, 2, 3)));
1.5 djm 58: int ssh_digest_update_buffer(struct ssh_digest_ctx *ctx,
59: const struct sshbuf *b);
1.1 djm 60: int ssh_digest_final(struct ssh_digest_ctx *ctx, u_char *d, size_t dlen)
1.4 djm 61: __attribute__((__bounded__(__buffer__, 2, 3)));
1.1 djm 62: void ssh_digest_free(struct ssh_digest_ctx *ctx);
63:
64: #endif /* _DIGEST_H */
65: