Internet DRAFT - draft-ietf-dnsext-dnssec-registry-update
draft-ietf-dnsext-dnssec-registry-update
DNS Extensions Working Group S. Rose
Internet-Draft NIST
Intended status: Standards Track August 3, 2012
Expires: February 4, 2013
DNS Security (DNSSEC) DNSKEY Algorithm IANA Registry Updates
draft-ietf-dnsext-dnssec-registry-update-04
Abstract
The DNS Security Extensions (DNSSEC) requires the use of
cryptographic algorithm suites for generating digital signatures over
DNS data. The algorithms specified for use with DNSSEC are reflected
in an IANA maintained registry. This document presents a set of
changes for some entries of the registry.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
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Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on February 4, 2013.
Copyright Notice
Copyright (c) 2012 IETF Trust and the persons identified as the
document authors. All rights reserved.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. The DNS Security Algorithm Number Sub-registry . . . . . . . . 3
2.1. Updates and Additions . . . . . . . . . . . . . . . . . . . 3
2.2. Domain Name System (DNS) Security Algorithm Number
Registry Table . . . . . . . . . . . . . . . . . . . . . . 4
3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 4
4. Security Considerations . . . . . . . . . . . . . . . . . . . . 5
5. Informative References . . . . . . . . . . . . . . . . . . . . 5
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1. Introduction
The Domain Name System (DNS) Security Extensions (DNSSEC, defined by
[RFC4033], [RFC4034], [RFC4035], [RFC4509], [RFC5155], and [RFC5702])
use digital signatures over DNS data to provide source authentication
and integrity protection. DNSSEC uses an IANA registry to list codes
for digital signature algorithms (consisting of an asymmetric
cryptographic algorithm and a one-way hash function).
This document updates a set of entries in the IANA registry for
Domain Name System Security (DNSSEC) Algorithm Numbers. These
updated entries are given in Section 2.2 below. This list includes
changes to selected entries originally set aside for future algorithm
specification that did not occur. These three entries are changed to
"Reserved" to avoid potential conflicts with older implementations.
This document also brings the list of references for entries up to
date.
There are auxillary sub-registries related to the Domain Name System
Security (DNSSEC) Algorithm Numbers registry that deal with various
Diffie-Hellman parameters used with DNSSEC. These registry tables
are not altered by this document.
2. The DNS Security Algorithm Number Sub-registry
The DNS Security Algorithm Number sub-registry (part of the Domain
Name System (DNS) Security Number registry) contains a set of entries
that contain errors. There are additional differences to entries
that are described in sub-section 2.1 and the complete list of
changed registry entries is in sub-section 2.2.
2.1. Updates and Additions
This document updates three entries in the Domain Name System
Security (DNSSEC) Algorithm Registry. They are:
The description for assignment number 4 is changed to "Reserved".
The description for assignment number 9 is changed to "Reserved".
The description for assignment number 11 is changed to "Reserved".
The above entries are changed to "Reserved" because they were
placeholders for algorithms that were not fully specified for use
with DNSSEC. Older implementations may still have these algorithm
codes assigned, so these codes are reserved to prevent potential
incompatibilities.
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2.2. Domain Name System (DNS) Security Algorithm Number Registry Table
The list of Domain Name System (DNS) Security Algorithm Number
registry entry changes are given below. All other existing entries
in the registry table are unchanged by this document and are not
shown. The other two tables in this registry (DNS KEY Record Diffie-
Hellman Prime Lengths and DNS KEY Record Diffie-Hellman Well-Known
Prime/Generator Pairs) are not changed in any way by this document.
Zone Trans.
Number Description Mnemonic Sign Sign Reference
------ ----------- -------- ---- ------ ---------
0 Reserved [RFC4034],
[RFC4398]
1 RSA/MD5 RSAMD5 N Y [RFC3110],
(Deprecated, [RFC4034]
see 5)
4 Reserved [THISDOC]
5 RSA/SHA-1 RSASHA1 Y Y [RFC3110]
[RFC4034]
9 Reserved [THISDOC]
11 Reserved [THISDOC]
15-122 Unassigned [RFC4034]
123-251 Reserved [RFC4034],
[RFC6014]
253 private PRIVATEDNS Y Y [RFC4034]
algorithm
254 private PRIVATEOID Y Y [RFC4034]
algorithm OID
3. IANA Considerations
This document updates a set of Domain Name System (DNS) Security
Algorithm Numbers registry entries as given in Section 2.2. The
changes include moving three registry entries to "Reserved" and
updating the reference list for entries.
The original Domain Name System (DNS) Security Algorithm Number
registry is available at
http://www.iana.org/assignments/dns-sec-alg-numbers.
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4. Security Considerations
This document replaces the Domain Name System (DNS) Security
Algorithm Numbers registry with an updated table. It is not meant to
be a discussion on algorithm superiority. No new security
considerations are raised in this document.
5. Informative References
[RFC3110] Eastlake, D., "RSA/SHA-1 SIGs and RSA KEYs in the Domain
Name System (DNS)", RFC 3110, May 2001.
[RFC4033] Arends, R., Austein, R., Larson, M., Massey, D., and S.
Rose, "DNS Security Introduction and Requirements",
RFC 4033, March 2005.
[RFC4034] Arends, R., Austein, R., Larson, M., Massey, D., and S.
Rose, "Resource Records for the DNS Security Extensions",
RFC 4034, March 2005.
[RFC4035] Arends, R., Austein, R., Larson, M., Massey, D., and S.
Rose, "Protocol Modifications for the DNS Security
Extensions", RFC 4035, March 2005.
[RFC4398] Josefsson, S., "Storing Certificates in the Domain Name
System (DNS)", RFC 4398, March 2006.
[RFC4509] Hardaker, W., "Use of SHA-256 in DNSSEC Delegation Signer
(DS) Resource Records (RRs)", RFC 4509, May 2006.
[RFC5155] Laurie, B., Sisson, G., Arends, R., and D. Blacka, "DNS
Security (DNSSEC) Hashed Authenticated Denial of
Existence", RFC 5155, March 2008.
[RFC5702] Jansen, J., "Use of SHA-2 Algorithms with RSA in DNSKEY
and RRSIG Resource Records for DNSSEC", RFC 5702,
October 2009.
[RFC6014] Hoffman, P., "Cryptographic Algorithm Identifier
Allocation for DNSSEC", RFC 6014, November 2010.
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Author's Address
Scott Rose
NIST
100 Bureau Dr.
Gaithersburg, MD 20899
USA
Phone: +1-301-975-8439
EMail: scottr.nist@gmail.com
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