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Versions: (draft-srose-dnssec-registry-update) 00 01 02 03 04 RFC 6725

DNS Extensions Working Group                                     S. Rose
Internet-Draft                                                      NIST
Intended status: Standards Track                          April 19, 2012
Expires: October 21, 2012


      DNS Security (DNSSEC) DNSKEY Algorithm IANA Registry Updates
              draft-ietf-dnsext-dnssec-registry-update-02

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   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 October 21, 2012.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.



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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.  Normative 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 new
   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 registries related to the Domain Name System
   Security (DNSSEC) Algorithm Numbers registry that deal with various
   Diffie-Hellmen 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]

     252     Reserved for      INDIRECT        N     N        [RFC4034]
             Indirect keys
     253     private           PRIVATE         Y     Y        [RFC4034]
             algorithm
     254     private           PRIVATEOID      Y     Y        [RFC4034]
             algorithm OID
     255     Reserved                                         [RFC4034]

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.




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   The original Domain Name System (DNS) Security Algorithm Number
   registry is available at
   http://www.iana.org/assignments/dns-sec-alg-numbers.

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.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC2536]  Eastlake, D., "DSA KEYs and SIGs in the Domain Name System
              (DNS)", RFC 2536, March 1999.

   [RFC2539]  Eastlake, D., "Storage of Diffie-Hellman Keys in the
              Domain Name System (DNS)", RFC 2539, March 1999.

   [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



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              and RRSIG Resource Records for DNSSEC", RFC 5702,
              October 2009.

   [RFC5933]  Dolmatov, V., Chuprina, A., and I. Ustinov, "Use of GOST
              Signature Algorithms in DNSKEY and RRSIG Resource Records
              for DNSSEC", RFC 5933, July 2010.

   [RFC6014]  Hoffman, P., "Cryptographic Algorithm Identifier
              Allocation for DNSSEC", RFC 6014, November 2010.

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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