/* * validator/val_secalgo.h - validator security algorithm functions. * * Copyright (c) 2012, NLnet Labs. All rights reserved. * * This software is open source. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of the NLNET LABS nor the names of its contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** * \file * * This file contains helper functions for the validator module. * The functions take buffers with raw data and convert to library calls. */ #ifndef VALIDATOR_VAL_SECALGO_H #define VALIDATOR_VAL_SECALGO_H struct sldns_buffer; /** * Return size of DS digest according to its hash algorithm. * @param algo: DS digest algo. * @return size in bytes of digest, or 0 if not supported. */ size_t ds_digest_size_supported(int algo); /** * @param algo: the DS digest algo * @param buf: the buffer to digest * @param len: length of buffer to digest. * @param res: result stored here (must have sufficient space). * @return false on failure. */ int secalgo_ds_digest(int algo, unsigned char* buf, size_t len, unsigned char* res); /** return true if DNSKEY algorithm id is supported */ int dnskey_algo_id_is_supported(int id); /** * Check a canonical sig+rrset and signature against a dnskey * @param buf: buffer with data to verify, the first rrsig part and the * canonicalized rrset. * @param algo: DNSKEY algorithm. * @param sigblock: signature rdata field from RRSIG * @param sigblock_len: length of sigblock data. * @param key: public key data from DNSKEY RR. * @param keylen: length of keydata. * @param reason: bogus reason in more detail. * @return secure if verification succeeded, bogus on crypto failure, * unchecked on format errors and alloc failures. */ enum sec_status verify_canonrrset(struct sldns_buffer* buf, int algo, unsigned char* sigblock, unsigned int sigblock_len, unsigned char* key, unsigned int keylen, char** reason); #endif /* VALIDATOR_VAL_SECALGO_H */