/* $NetBSD: nsec3_50.h,v 1.6.2.1 2024/02/25 15:47:04 martin Exp $ */ /* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * SPDX-License-Identifier: MPL-2.0 * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, you can obtain one at https://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. */ #pragma once /*! * \brief Per RFC 5155 */ #include typedef struct dns_rdata_nsec3 { dns_rdatacommon_t common; isc_mem_t *mctx; dns_hash_t hash; unsigned char flags; dns_iterations_t iterations; unsigned char salt_length; unsigned char next_length; uint16_t len; unsigned char *salt; unsigned char *next; unsigned char *typebits; } dns_rdata_nsec3_t; /* * The corresponding NSEC3 interval is OPTOUT indicating possible * insecure delegations. */ #define DNS_NSEC3FLAG_OPTOUT 0x01U /*% * The following flags are used in the private-type record (implemented in * lib/dns/private.c) which is used to store NSEC3PARAM data during the * time when it is not legal to have an actual NSEC3PARAM record in the * zone. They are defined here because the private-type record uses the * same flags field for the OPTOUT flag above and for the private flags * below. XXX: This should be considered for refactoring. */ /*% * Non-standard, private type only. * * Create a corresponding NSEC3 chain. * Once the NSEC3 chain is complete this flag will be removed to signal * that there is a complete chain. * * This flag is automatically set when a NSEC3PARAM record is added to * the zone via UPDATE. * * NSEC3PARAM records containing this flag should never be published, * but if they are, they should be ignored by RFC 5155 compliant * nameservers. */ #define DNS_NSEC3FLAG_CREATE 0x80U /*% * Non-standard, private type only. * * The corresponding NSEC3 set is to be removed once the NSEC chain * has been generated. * * This flag is automatically set when the last active NSEC3PARAM record * is removed from the zone via UPDATE. * * NSEC3PARAM records containing this flag should never be published, * but if they are, they should be ignored by RFC 5155 compliant * nameservers. */ #define DNS_NSEC3FLAG_REMOVE 0x40U /*% * Non-standard, private type only. * * When set with the CREATE flag, a corresponding NSEC3 chain will be * created when the zone becomes capable of supporting one (i.e., when it * has a DNSKEY RRset containing at least one NSEC3-capable algorithm). * Without this flag, NSEC3 chain creation would be attempted immediately, * fail, and the private type record would be removed. With it, the NSEC3 * parameters are stored until they can be used. When the zone has the * necessary prerequisites for NSEC3, then the INITIAL flag can be cleared, * and the record will be cleaned up normally. * * NSEC3PARAM records containing this flag should never be published, but * if they are, they should be ignored by RFC 5155 compliant nameservers. */ #define DNS_NSEC3FLAG_INITIAL 0x20U /*% * Non-standard, private type only. * * Prevent the creation of a NSEC chain before the last NSEC3 chain * is removed. This will normally only be set when the zone is * transitioning from secure with NSEC3 chains to insecure. * * NSEC3PARAM records containing this flag should never be published, * but if they are, they should be ignored by RFC 5155 compliant * nameservers. */ #define DNS_NSEC3FLAG_NONSEC 0x10U