Using the ECC Brainpool Curves for IKEv2 Key Exchange
draft-merkle-ikev2-ke-brainpool-00

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Network Working Group                                          J. Merkle
Internet-Draft                                 secunet Security Networks
Intended status: Informational                                M. Lochter
Expires: February 28, 2013              Bundesamt fuer Sicherheit in der
                                               Informationstechnik (BSI)
                                                         August 27, 2012

         Using the ECC Brainpool Curves for IKEv2 Key Exchange
                   draft-merkle-ikev2-ke-brainpool-00

Abstract

   This document specifies the use of the ECC Brainpool elliptic curve
   groups for key exchange in the Internet Key Exchange version 2
   (IKEv2) protocol.

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   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on February 28, 2013.

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   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.  IKEv2 Key Exchange using the ECC Brainpool Curves  . . . . . .  4
     2.1.  Diffie-Hellman Group Transform IDs . . . . . . . . . . . .  4
     2.2.  Key Exchange Payload and Shared Secret . . . . . . . . . .  5
   3.  Security Considerations  . . . . . . . . . . . . . . . . . . .  7
   4.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  8
   5.  Intellectual Property Rights . . . . . . . . . . . . . . . . .  9
   6.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 10
     6.1.  Normative References . . . . . . . . . . . . . . . . . . . 10
     6.2.  Informative References . . . . . . . . . . . . . . . . . . 10
   Appendix A.  Test Vectors  . . . . . . . . . . . . . . . . . . . . 12
     A.1.  160 Bit Curves . . . . . . . . . . . . . . . . . . . . . . 12
     A.2.  192 Bit Curves . . . . . . . . . . . . . . . . . . . . . . 13
     A.3.  224 Bit Curves . . . . . . . . . . . . . . . . . . . . . . 14
     A.4.  256 Bit Curves . . . . . . . . . . . . . . . . . . . . . . 15
     A.5.  320 Bit Curves . . . . . . . . . . . . . . . . . . . . . . 16
     A.6.  384 Bit Curves . . . . . . . . . . . . . . . . . . . . . . 17
     A.7.  512 Bit Curves . . . . . . . . . . . . . . . . . . . . . . 18

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1.  Introduction

   In RFC 5639 [RFC5639], a new set of elliptic curve groups over finite
   prime fields for use in cryptographic applications was specified.
   These groups, denoted as Brainpool curves, were generated in a
   verifiably pseudo-random way and comply with the security
   requirements of relevant standards from ISO [ISO1] [ISO2], ANSI
   [ANSI1], NIST [FIPS], and SecG [SEC2].

   While the ASN.1 object identifiers defined in RFC 5639 allow usage of
   the ECC Brainpool curves in certificates and certificate revocation
   lists, their utilization for key exchange in IKEv2 [RFC4306] requires
   the definition and assignment of additional transform IDs in the
   respective IANA registry.  Furthermore, the encoding of the key
   exchange payload and derivation of the shared secret are defined,
   because previous RFCs specified this encoding only for the curves
   proposed therein.

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