EdDSA value for IPSECKEY
draft-moskowitz-ipsecme-ipseckey-eddsa-03

IPSECME                                                     R. Moskowitz
Internet-Draft                                            HTT Consulting
Intended status: Standards Track                              T. Kivinen
Expires: 11 May 2023                                                    
                                                           M. Richardson
                                                               Sandelman
                                                         7 November 2022

                        EdDSA value for IPSECKEY
               draft-moskowitz-ipsecme-ipseckey-eddsa-03

Abstract

   This document assigns a value for EdDSA Public Keys to the IPSECKEY
   IANA 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 https://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 11 May 2023.

Copyright Notice

   Copyright (c) 2022 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 (https://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 Revised BSD License text as
   described in Section 4.e of the Trust Legal Provisions and are
   provided without warranty as described in the Revised BSD License.

Moskowitz, et al.          Expires 11 May 2023                  [Page 1]
Internet-Draft               IPSECKEY EdDSA                November 2022

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  IPSECKEY support for EdDSA  . . . . . . . . . . . . . . . . .   2
   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   2
     3.1.  IANA IPSECKEY Registry Update . . . . . . . . . . . . . .   2
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   3
   5.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   3
     5.1.  Normative References  . . . . . . . . . . . . . . . . . .   3
     5.2.  Informative References  . . . . . . . . . . . . . . . . .   3
   Appendix A.  IPSECKEY EdDSA example . . . . . . . . . . . . . . .   4
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .   4
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   4

1.  Introduction

   IPSECKEY [RFC4025) is a resource record (RR) for the Domain Name
   System (DNS) that is used to store public keys for use in IP security
   (IPsec) systems.  The IPSECKEY RR relies on the IPSECKEY Algorithm
   Type Field registry [IANA-IPSECKEY] to enumerate the permissible
   formats for the public keys.

   This documents adds support for Edwards-Curve Digital Security
   Algorithm (EdDSA) public keys in the format defined in [RFC8080] to
   the IPSECKEY RR.

2.  IPSECKEY support for EdDSA

   Use of an EdDSA public key encoded in the format specified in
   [RFC8080] in an IPSECKEY RR is indicated as follows:

      Value  Description

      TBD1 (suggested value 4)
             An EdDSA Public Key is present, in the format defined
             in [RFC8080]

3.  IANA Considerations

3.1.  IANA IPSECKEY Registry Update

   This document requests IANA to update the "Description" field in
   existing entries of the "Algorithm Type Field" subregistry of the
   "IPSECKEY Resource Record Parameters" [IANA-IPSECKEY] to explicitly
   state that is for "Public" keys:

Moskowitz, et al.          Expires 11 May 2023                  [Page 2]
Internet-Draft               IPSECKEY EdDSA                November 2022

   Value  Description                Format description    Reference
   0      No key is present                                [RFC4025]
   1      A DSA Public Key           [RFC2536], Sec. 2     [RFC4025]
   2      A RSA Public Key           [RFC3110], Sec. 2     [RFC4025]
   3      An ECDSA Public Key        [RFC6605], Sec. 4     [RFC4025]

   Further, this document requests IANA to make the following addition
   to the "IPSECKEY Resource Record Parameters" [IANA-IPSECKEY]
   registry:

   IPSECKEY:
      This document defines the new IPSECKEY value TBD1 (suggested: 4)
      (Section 2) in the "Algorithm Type Field" subregistry of the
      "IPSECKEY Resource Record Parameters" registry.

   Value  Description                Format description    Reference

   TBD1   An EdDSA Public Key        [RFC8080], Sec. 3     [ThisRFC]

4.  Security Considerations

   No new issues than [RFC4025] describes.

5.  References

5.1.  Normative References

   [IANA-IPSECKEY]
              IANA, "IPSECKEY Resource Record Parameters",
              <https://www.iana.org/assignments/ipseckey-rr-parameters/
              ipseckey-rr-parameters.xhtml>.

   [RFC8080]  Sury, O. and R. Edmonds, "Edwards-Curve Digital Security
              Algorithm (EdDSA) for DNSSEC", RFC 8080,
              DOI 10.17487/RFC8080, February 2017,
              <https://www.rfc-editor.org/info/rfc8080>.

5.2.  Informative References

   [RFC4025]  Richardson, M., "A Method for Storing IPsec Keying
              Material in DNS", RFC 4025, DOI 10.17487/RFC4025, March
              2005, <https://www.rfc-editor.org/info/rfc4025>.

Moskowitz, et al.          Expires 11 May 2023                  [Page 3]
Internet-Draft               IPSECKEY EdDSA                November 2022

Appendix A.  IPSECKEY EdDSA example

   The following is an example of an IPSECKEY RR with an EdDSA public
   key base64 encode with no gateway:

      foo.example.com IN IPSECKEY
      (10 0 4 . 3WTXgUvpn1RlCXnm80gGY2LZ/ErUUEZtZ33IDi8yfhM= )

   The associated EdDSA private key (in hex):

      c7be71a45cbf87785f639dc4fd1c82637c21b5e02488939976ece32b9268d0b7

Acknowledgments

   Thanks to Security Area director, Paul Wouters, for initial review.
   And Security Area director, Roman Danyliw, for final reviews and
   draft shepherding.

Authors' Addresses

   Robert Moskowitz
   HTT Consulting
   Oak Park, MI 48237
   United States of America
   Email: rgm@labs.htt-consult.com

   Tero Kivinen
   Email: kivinen@iki.fi

   Michael C. Richardson
   Sandelman Software Works
   Email: mcr+ietf@sandelman.ca
   URI:   http://www.sandelman.ca/

Moskowitz, et al.          Expires 11 May 2023                  [Page 4]