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a85b5759f3
These files were pulled from the 1.6.3 release tarball. This new version builds against OpenSSL version 1.1 which will be the default in the new Debian Stable which is due to be released RealSoonNow (tm).
107 lines
4 KiB
C
107 lines
4 KiB
C
/*
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* validator/val_secalgo.h - validator security algorithm functions.
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*
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* Copyright (c) 2012, NLnet Labs. All rights reserved.
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*
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* This software is open source.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of the NLNET LABS nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* This file contains helper functions for the validator module.
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* The functions take buffers with raw data and convert to library calls.
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*/
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#ifndef VALIDATOR_VAL_SECALGO_H
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#define VALIDATOR_VAL_SECALGO_H
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struct sldns_buffer;
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/** Return size of nsec3 hash algorithm, 0 if not supported */
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size_t nsec3_hash_algo_size_supported(int id);
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/**
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* Hash a single hash call of an NSEC3 hash algorithm.
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* Iterations and salt are done by the caller.
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* @param algo: nsec3 hash algorithm.
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* @param buf: the buffer to digest
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* @param len: length of buffer to digest.
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* @param res: result stored here (must have sufficient space).
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* @return false on failure.
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*/
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int secalgo_nsec3_hash(int algo, unsigned char* buf, size_t len,
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unsigned char* res);
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/**
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* Calculate the sha256 hash for the data buffer into the result.
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* @param buf: buffer to digest.
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* @param len: length of the buffer to digest.
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* @param res: result is stored here (space 256/8 bytes).
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*/
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void secalgo_hash_sha256(unsigned char* buf, size_t len, unsigned char* res);
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/**
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* Return size of DS digest according to its hash algorithm.
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* @param algo: DS digest algo.
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* @return size in bytes of digest, or 0 if not supported.
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*/
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size_t ds_digest_size_supported(int algo);
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/**
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* @param algo: the DS digest algo
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* @param buf: the buffer to digest
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* @param len: length of buffer to digest.
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* @param res: result stored here (must have sufficient space).
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* @return false on failure.
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*/
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int secalgo_ds_digest(int algo, unsigned char* buf, size_t len,
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unsigned char* res);
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/** return true if DNSKEY algorithm id is supported */
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int dnskey_algo_id_is_supported(int id);
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/**
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* Check a canonical sig+rrset and signature against a dnskey
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* @param buf: buffer with data to verify, the first rrsig part and the
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* canonicalized rrset.
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* @param algo: DNSKEY algorithm.
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* @param sigblock: signature rdata field from RRSIG
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* @param sigblock_len: length of sigblock data.
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* @param key: public key data from DNSKEY RR.
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* @param keylen: length of keydata.
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* @param reason: bogus reason in more detail.
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* @return secure if verification succeeded, bogus on crypto failure,
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* unchecked on format errors and alloc failures.
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*/
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enum sec_status verify_canonrrset(struct sldns_buffer* buf, int algo,
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unsigned char* sigblock, unsigned int sigblock_len,
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unsigned char* key, unsigned int keylen, char** reason);
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#endif /* VALIDATOR_VAL_SECALGO_H */
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