source: openpam/trunk/include/security/oath_constants.h @ 655

Last change on this file since 655 was 655, checked in by Dag-Erling Smørgrav, 8 years ago

Split up the liboath header files.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.3 KB
Line 
1/*-
2 * Copyright (c) 2012-2013 Universitetet i Oslo
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote
14 *    products derived from this software without specific prior written
15 *    permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $Id: oath_constants.h 655 2013-03-06 14:10:09Z des $
30 */
31
32#ifndef OATH_CONSTANTS_H_INCLUDED
33#define OATH_CONSTANTS_H_INCLUDED
34
35/*
36 * OATH modes
37 */
38enum oath_mode {
39        om_undef,               /* not set / default */
40        om_hotp,                /* RFC 4226 HOTP */
41        om_totp,                /* RFC 6238 TOTP */
42        om_max
43};
44
45/*
46 * Hash functions
47 */
48enum oath_hash {
49        oh_undef,               /* not set / default */
50        oh_md5,                 /* RFC 1321 MD5 */
51        oh_sha1,                /* FIPS 180 SHA-1 */
52        oh_sha256,              /* FIPS 180 SHA-256 */
53        oh_sha512,              /* FIPS 180 SHA-512 */
54        oh_max
55};
56
57/*
58 * Default time step for TOTP: 30 seconds.
59 */
60#define OATH_DEF_TIMESTEP       30
61
62/*
63 * Maximum time step for TOTP: 10 minutes, which RFC 6238 cites as an
64 * example of an unreasonably large time step.
65 */
66#define OATH_MAX_TIMESTEP       600
67
68/*
69 * Maximum key length in bytes.  HMAC has a 64-byte block size; if the key
70 * K is longer than that, HMAC derives a new key K' = H(K).
71 */
72#define OATH_MAX_KEYLEN         64
73
74#endif
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