Network Working Group P. Hoffman
Internet-Draft ICANN
Updates: 3658, 5155, 6014, 8624 (if July 21, 2021
approved)
Intended status: Standards Track
Expires: January 22, 2022
Revised IANA Considerations for DNSSEC
draft-ietf-dnsop-dnssec-iana-cons-01
Abstract
This document changes the review requirements needed to get some
DNSSEC algorithms and resource records added to IANA registries. It
updates RFC 6014 to include hash algorithms for DS records and NSEC3
parameters. It also updates RFC 5155 and RFC 6014, which have
requirements for DNSSEC algorithms. It also updates RFC 8624 to say
that algorithms that are described in RFCs that are not on standards
track are only at the "MAY" level of implementation recommendation.
The rationale for these changes is to bring the requirements for DS
records and for the hash algorithms used in NSEC3 in line with the
requirements for all other DNSSEC algorithms.
Status of This Memo
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This Internet-Draft will expire on January 22, 2022.
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document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Update to RFC 6014 . . . . . . . . . . . . . . . . . . . . . 2
3. Update to RFC 8624 . . . . . . . . . . . . . . . . . . . . . 3
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3
5. Security Considerations . . . . . . . . . . . . . . . . . . . 3
6. References . . . . . . . . . . . . . . . . . . . . . . . . . 4
6.1. Normative References . . . . . . . . . . . . . . . . . . 4
6.2. Informative References . . . . . . . . . . . . . . . . . 4
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 5
1. Introduction
DNSSEC is primarily described in [RFC4033], [RFC4034], and [RFC4035].
DNSSEC commonly uses two resource records beyond those defined in RFC
4034: DS [RFC3658] and NSEC3 [RFC5155].
[RFC8126] describes the requirements for listing in the myriad IANA
registries.
[RFC6014] updated the requirements for how DNSSEC cryptographic
algorithm identifiers in the IANA registries are allocated, reducing
the requirements from being "Standards Action" to "RFC Required".
However, the IANA registry requirements for hash algorithms for DS
records and for the hash algorithms used in NSEC3 are still
"Standards Action".
2. Update to RFC 6014
Section 4 updates RFC 6014 to bring the requirements for DS records
and NSEC3 hash algorithms in line with the rest of the DNSSEC
cryptographic algorithms by allowing any DS or NSEC3 hash algorithms
that are fully described in an RFC to have identifiers allocated in
the IANA registries. This is an addition to the IANA considerations
in RFC 6014.
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3. Update to RFC 8624
This document updates [RFC8624] for all DNSKEY and DS algorithms that
are not on standards track.
The second paragraph of Section 1.2 of RFC 8624 currently says:
This document only provides recommendations with respect to
mandatory-to-implement algorithms or algorithms so weak that they
cannot be recommended. Any algorithm listed in the [DNSKEY-IANA] and
[DS-IANA] registries that are not mentioned in this document MAY be
implemented. For clarification and consistency, an algorithm will be
specified as MAY in this document only when it has been downgraded
from a MUST or a RECOMMENDED to a MAY.
That paragraph is now replaced with the following:
This document provides recommendations with respect to mandatory-to-
implement algorithms, algorithms so weak that they cannot be
recommended, and algorithms that are defined in RFCs that are not on
standards track. Any algorithm listed in the [DNSKEY-IANA] and [DS-
IANA] registries that are not mentioned in this document MAY be
implemented. For clarification and consistency, an algorithm will be
specified as MAY in this document only when it has been downgraded
from a MUST or a RECOMMENDED to a MAY.
This update is also reflected in the IANA considerations in
Section 4.
4. IANA Considerations
In the "Domain Name System Security (DNSSEC) NextSECure3 (NSEC3)
Parameters" registry, the registration procedure for "DNSSEC NSEC3
Flags", "DNSSEC NSEC3 Hash Algorithms", and "DNSSEC NSEC3PARAM Flags"
are changed from "Standards Action" to "RFC Required".
In the "Delegation Signer (DS) Resource Record (RR) Type Digest
Algorithms" registry, the registration procedure for "Digest
Algorithms" is changed from "Standards Action" to "RFC Required".
5. Security Considerations
Changing the requirements for getting security algorithms added to
IANA registries as described in this document will make it easier to
get good algorithms added to the registries, and will make it easier
to get bad algorithms added to the registries. It is impossible to
weigh the security impact of those two changes.
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6. References
6.1. Normative References
[RFC4033] Arends, R., Austein, R., Larson, M., Massey, D., and S.
Rose, "DNS Security Introduction and Requirements",
RFC 4033, DOI 10.17487/RFC4033, March 2005,
<https://www.rfc-editor.org/info/rfc4033>.
[RFC4034] Arends, R., Austein, R., Larson, M., Massey, D., and S.
Rose, "Resource Records for the DNS Security Extensions",
RFC 4034, DOI 10.17487/RFC4034, March 2005,
<https://www.rfc-editor.org/info/rfc4034>.
[RFC4035] Arends, R., Austein, R., Larson, M., Massey, D., and S.
Rose, "Protocol Modifications for the DNS Security
Extensions", RFC 4035, DOI 10.17487/RFC4035, March 2005,
<https://www.rfc-editor.org/info/rfc4035>.
[RFC5155] Laurie, B., Sisson, G., Arends, R., and D. Blacka, "DNS
Security (DNSSEC) Hashed Authenticated Denial of
Existence", RFC 5155, DOI 10.17487/RFC5155, March 2008,
<https://www.rfc-editor.org/info/rfc5155>.
[RFC6014] Hoffman, P., "Cryptographic Algorithm Identifier
Allocation for DNSSEC", RFC 6014, DOI 10.17487/RFC6014,
November 2010, <https://www.rfc-editor.org/info/rfc6014>.
[RFC8126] Cotton, M., Leiba, B., and T. Narten, "Guidelines for
Writing an IANA Considerations Section in RFCs", BCP 26,
RFC 8126, DOI 10.17487/RFC8126, June 2017,
<https://www.rfc-editor.org/info/rfc8126>.
[RFC8624] Wouters, P. and O. Sury, "Algorithm Implementation
Requirements and Usage Guidance for DNSSEC", RFC 8624,
DOI 10.17487/RFC8624, June 2019,
<https://www.rfc-editor.org/info/rfc8624>.
6.2. Informative References
[RFC3658] Gudmundsson, O., "Delegation Signer (DS) Resource Record
(RR)", RFC 3658, DOI 10.17487/RFC3658, December 2003,
<https://www.rfc-editor.org/info/rfc3658>.
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Author's Address
Paul Hoffman
ICANN
Email: paul.hoffman@icann.org
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