1/*	$OpenBSD: idgen.h,v 1.3 2013/06/05 05:45:54 djm Exp $	*/
2/*
3 * Copyright (c) 2008 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#define IDGEN32_ROUNDS		31
19#define IDGEN32_KEYLEN		32
20#define IDGEN32_REKEY_LIMIT	0x60000000
21#define IDGEN32_REKEY_TIME	600
22
23struct idgen32_ctx {
24	u_int32_t id32_counter;
25	u_int32_t id32_offset;
26	u_int32_t id32_hibit;
27	u_int8_t id32_key[IDGEN32_KEYLEN];
28	time_t id32_rekey_time;
29};
30
31void idgen32_init(struct idgen32_ctx *);
32u_int32_t idgen32(struct idgen32_ctx *);
33
34