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Versions: 00 draft-ietf-dnsext-dnssec-registry-update

DNS Extensions Working Group                                     S. Rose
Internet-Draft                                                      NIST
Intended status: Standards Track                       November 18, 2011
Expires: May 21, 2012


      DNS Security (DNSSEC) DNSKEY Algorithm IANA Registry Updates
                 draft-srose-dnssec-registry-update-00

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 and presents a new registry
   table.

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 May 21, 2012.

Copyright Notice

   Copyright (c) 2011 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



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   described in the Simplified BSD License.

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) [RFC4033],
   [RFC4034], [RFC4035], [RFC4509], [RFC5155], and [RFC5702] uses
   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 a cryptographic algorithm
   and one-way hash function).

   This document replaces the current IANA registry for Domain Name
   System Security (DNSSEC) Algorithm Numbers with a newly defined
   registry table.  This new table (Section 2.2 below) contains a
   collection of changes to selected entries originally set aside for
   future algorithm specification that did not occur.  These 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.

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) will be replaced with the
   table below.  There are additional differences to entries that are
   described in sub-section 2.1 and the overall new registry table 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 values 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 Domain Name System (DNS) Security Algorithm Number registry is
   hereby specified as follows below.

                                               Trans-
                                         Zone  action
      Number  Description     Mnemonic   Sign  Sign     Reference
      ------  -----------     ------     ----  -----    ---------
        0      Reserved                                 [RFC4034]
                                                        [RFC4398]
        1      RSA/MD5         RSAMD5     N      Y      [RFC3110]

        2      Diffie-Hellman  DH         N      Y      [RFC2539]
        3      DSA/SHA-1       DSASHA1    Y      Y      [RFC2536]
        4      Reserved
        5      RSA/SHA-1       RSASHA1    Y      Y      [RFC3110]

        6      DSA-NSEC3-SHA1  DSA-NSEC3  Y      Y      [RFC5155]
                               -SHA1
        7      RSASHA1-NSEC3   RSASHA1-   Y      Y      [RFC5155]
               -SHA1           NSEC3-
                               SHA1
        8      RSA/SHA-256     RSASHA256  Y      *      [RFC5702]

        9      Reserved
       10      RSA/SHA-512     RSASHA512  Y      *      [RFC5702]

       11      Reserved
       12      GOST R          GOST-ECC   Y      *      [RFC5933]
               34.10-2001
      13-122   Unassigned
      123-251  Reserved                                 [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 replaces the Domain Name System (DNS) Security
   Algorithm Numbers registry with new registry table is 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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