48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/*
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* Copyright (C) 2008 Internet Systems Consortium, Inc. ("ISC")
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: iterated_hash.h,v 1.1.2.1 2015-04-01 02:13:20 lyang3 Exp $ */
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#ifndef ISC_ITERATED_HASH_H
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#define ISC_ITERATED_HASH_H 1
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#include <isc/lang.h>
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#include <isc/sha1.h>
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/*
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* The maximal hash length that can be encoded it a name
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* using base32hex. floor(255/8)*5
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*/
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#define NSEC3_MAX_HASH_LENGTH 155
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/*
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* The maximum has that can be encoded in a single label using
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* base32hex. floor(63/8)*5
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*/
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#define NSEC3_MAX_LABEL_HASH 35
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ISC_LANG_BEGINDECLS
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int isc_iterated_hash(unsigned char out[NSEC3_MAX_HASH_LENGTH],
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unsigned int hashalg, int iterations,
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const unsigned char *salt, int saltlength,
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const unsigned char *in, int inlength);
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ISC_LANG_ENDDECLS
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#endif /* ISC_ITERATED_HASH_H */
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