Brainpool Elliptic Curves for the Internet Key Exchange (IKE) Group Description Registry
RFC 6932

Document Type RFC - Informational (May 2013; No errata)
Was draft-harkins-brainpool-ike-groups (individual in sec area)
Last updated 2013-05-22
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IESG note Johannes Merkle (johannes.merkle@secunet.com) is the document shepherd.
Send notices to dharkins@arubanetworks.com, draft-harkins-brainpool-ike-groups@ietf.org, johannes.merkle@secunet.com
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Internet Engineering Task Force (IETF)                   D. Harkins, Ed.
Request for Comments: 6932                                Aruba Networks
Category: Informational                                         May 2013
ISSN: 2070-1721

                       Brainpool Elliptic Curves
     for the Internet Key Exchange (IKE) Group Description Registry

Abstract

   This memo allocates code points for four new elliptic curve domain
   parameter sets over finite prime fields into a registry that was
   established by the Internet Key Exchange (IKE) but is used by other
   protocols.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6932.

Copyright Notice

   Copyright (c) 2013 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.

Harkins                       Informational                     [Page 1]
RFC 6932          Brainpool ECC for IKE Group Registry          May 2013

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   2
   2.  Brainpool Elliptic Curves . . . . . . . . . . . . . . . . . .   2
     2.1.  Domain Parameters for the 224-Bit Curve . . . . . . . . .   4
     2.2.  Domain Parameters for the 256-Bit Curve . . . . . . . . .   4
     2.3.  Domain Parameters for the 384-Bit Curve . . . . . . . . .   5
     2.4.  Domain Parameters for the 512-Bit Curve . . . . . . . . .   5
   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   5.  Use of Brainpool Curves . . . . . . . . . . . . . . . . . . .   7
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .   7
     6.2.  Informative References  . . . . . . . . . . . . . . . . .   7
   Appendix A.  Test Data  . . . . . . . . . . . . . . . . . . . . .   9
     A.1.  Test Vector for brainpoolP224r1 . . . . . . . . . . . . .   9
     A.2.  Test Vector for brainpoolP256r1 . . . . . . . . . . . . .  10
     A.3.  Test Vector for brainpoolP384r1 . . . . . . . . . . . . .  10
     A.4.  Test Vector for brainpoolP512r1 . . . . . . . . . . . . .  11

1.  Introduction

   [RFC5639] defines new elliptic curve domain parameters for curves
   over a number of different prime fields, each with a "twisted"
   variant.  These curves have a number of interesting security
   properties (as described in [EBP]) that make them desirable to use.

   IANA maintains a registry for [RFC2409] to map complete domain
   parameter sets into easily referenced numbers.  While [RFC2409] is
   deprecated, other protocols, for example [IEEE802.11] and [RFC5931],
   refer to this registry for its convenience.  Therefore, this memo
   instructs IANA to allocate new code points for the Brainpool curves
   defined in [RFC5639] to the registry established by [RFC2409] for use
   by other protocols.

1.1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

2.  Brainpool Elliptic Curves

   [RFC5639] defines several elliptic curves over finite prime fields
   (ECP, in the parlance of [RFC2409]).  The domain parameter sets for
   each of the elliptic curves defined in [RFC5639] are copied here for
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