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 23 struct 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 31 void idgen32_init(struct idgen32_ctx *); 32 u_int32_t idgen32(struct idgen32_ctx *); 33 34