1 /* $NetBSD: iterated_hash.h,v 1.6 2020/05/25 20:47:21 christos Exp $ */ 2 3 /* 4 * Copyright (C) 2008 Internet Systems Consortium, Inc. ("ISC") 5 * 6 * Permission to use, copy, modify, and/or distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 11 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 12 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 13 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 14 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 15 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16 * PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 /* Id: iterated_hash.h,v 1.3 2008/09/25 04:02:39 tbox Exp */ 20 21 #ifndef ISC_ITERATED_HASH_H 22 #define ISC_ITERATED_HASH_H 1 23 24 #include <isc/lang.h> 25 #include <isc/sha1.h> 26 27 /* 28 * The maximal hash length that can be encoded it a name 29 * using base32hex. floor(255/8)*5 30 */ 31 #define NSEC3_MAX_HASH_LENGTH 155 32 33 /* 34 * The maximum has that can be encoded in a single label using 35 * base32hex. floor(63/8)*5 36 */ 37 #define NSEC3_MAX_LABEL_HASH 35 38 39 ISC_LANG_BEGINDECLS 40 41 int isc_iterated_hash(unsigned char out[NSEC3_MAX_HASH_LENGTH], 42 unsigned int hashalg, int iterations, 43 const unsigned char *salt, int saltlength, 44 const unsigned char *in, int inlength); 45 46 47 ISC_LANG_ENDDECLS 48 49 #endif /* ISC_ITERATED_HASH_H */ 50