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/*
* Copyright (C) 1999-2001 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $ISC: dnssec.h,v 1.21 2001/01/17 01:22:20 bwelling Exp $ */
#ifndef DNS_DNSSEC_H
#define DNS_DNSSEC_H 1
#include <isc/lang.h>
#include <isc/stdtime.h>
#include <dns/types.h>
#include <dst/dst.h>
ISC_LANG_BEGINDECLS
isc_result_t
dns_dnssec_keyfromrdata(dns_name_t *name, dns_rdata_t *rdata, isc_mem_t *mctx,
dst_key_t **key);
/*
* Creates a DST key from a DNS record. Basically a wrapper around
* dst_key_fromdns().
*
* Requires:
* 'name' is not NULL
* 'rdata' is not NULL
* 'mctx' is not NULL
* 'key' is not NULL
* '*key' is NULL
*
* Returns:
* ISC_R_SUCCESS
* ISC_R_NOMEMORY
* DST_R_INVALIDPUBLICKEY
* various errors from dns_name_totext
*/
isc_result_t
dns_dnssec_sign(dns_name_t *name, dns_rdataset_t *set, dst_key_t *key,
isc_stdtime_t *inception, isc_stdtime_t *expire,
isc_mem_t *mctx, isc_buffer_t *buffer, dns_rdata_t *sigrdata);
/*
* Generates a SIG record covering this rdataset. This has no effect
* on existing SIG records.
*
* Requires:
* 'name' (the owner name of the record) is a valid name
* 'set' is a valid rdataset
* 'key' is a valid key
* 'inception' is not NULL
* 'expire' is not NULL
* 'mctx' is not NULL
* 'buffer' is not NULL
* 'sigrdata' is not NULL
*
* Returns:
* ISC_R_SUCCESS
* ISC_R_NOMEMORY
* ISC_R_NOSPACE
* DNS_R_INVALIDTIME - the expiration is before the inception
* DNS_R_KEYUNAUTHORIZED - the key cannot sign this data (either
* it is not a zone key or its flags prevent
* authentication)
* DST_R_*
*/
isc_result_t
dns_dnssec_verify(dns_name_t *name, dns_rdataset_t *set, dst_key_t *key,
isc_boolean_t ignoretime, isc_mem_t *mctx,
dns_rdata_t *sigrdata);
/*
* Verifies the SIG record covering this rdataset signed by a specific
* key. This does not determine if the key's owner is authorized to
* sign this record, as this requires a resolver or database.
* If 'ignoretime' is ISC_TRUE, temporal validity will not be checked.
*
* Requires:
* 'name' (the owner name of the record) is a valid name
* 'set' is a valid rdataset
* 'key' is a valid key
* 'mctx' is not NULL
* 'sigrdata' is a valid rdata containing a SIG record
*
* Returns:
* ISC_R_SUCCESS
* ISC_R_NOMEMORY
* DNS_R_SIGINVALID - the signature fails to verify
* DNS_R_SIGEXPIRED - the signature has expired
* DNS_R_SIGFUTURE - the signature's validity period has not begun
* DNS_R_KEYUNAUTHORIZED - the key cannot sign this data (either
* it is not a zone key or its flags prevent
* authentication)
* DST_R_*
*/
isc_result_t
dns_dnssec_findzonekeys(dns_db_t *db, dns_dbversion_t *ver, dns_dbnode_t *node,
dns_name_t *name, isc_mem_t *mctx,
unsigned int maxkeys, dst_key_t **keys,
unsigned int *nkeys);
/*
* Finds a set of zone keys.
* XXX temporary - this should be handled in dns_zone_t.
*/
isc_result_t
dns_dnssec_signmessage(dns_message_t *msg, dst_key_t *key);
/*
* Signs a message with a SIG(0) record. This is implicitly called by
* dns_message_renderend() if msg->sig0key is not NULL.
*
* Requires:
* 'msg' is a valid message
* 'key' is a valid key that can be used for signing
*
* Returns:
* ISC_R_SUCCESS
* ISC_R_NOMEMORY
* DST_R_*
*/
isc_result_t
dns_dnssec_verifymessage(isc_buffer_t *source, dns_message_t *msg,
dst_key_t *key);
/*
* Verifies a message signed by a SIG(0) record. This is not
* called implicitly by dns_message_parse(). If dns_message_signer()
* is called before dns_dnssec_verifymessage(), it will return
* DNS_R_SIGNOTVERIFIEDYET. dns_dnssec_verifymessage() will set
* the verified_sig0 flag in msg if the verify succeeds, and
* the sig0status field otherwise.
*
* Requires:
* 'source' is a valid buffer containing the unparsed message
* 'msg' is a valid message
* 'key' is a valid key
*
* Returns:
* ISC_R_SUCCESS
* ISC_R_NOMEMORY
* ISC_R_NOTFOUND - no SIG(0) was found
* DNS_R_SIGINVALID - the SIG record is not well-formed or
* was not generated by the key.
* DST_R_*
*/
ISC_LANG_ENDDECLS
#endif /* DNS_DNSSEC_H */
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