ECC Brainpool Curves for Transport Layer Security (TLS)
draft-merkle-tls-brainpool-02

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Document Type Active Internet-Draft (individual in sec area)
Last updated 2013-06-25
Stream IETF
Intended RFC status Informational
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Stream WG state (None)
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Document shepherd Dan Harkins
Shepherd write-up Show (last changed 2013-06-20)
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Send notices to johannes.merkle@secunet.com, manfred.lochter@bsi.bund.de, draft-merkle-tls-brainpool@tools.ietf.org, dharkins@lounge.org
IANA IANA review state IANA - Review Needed
IANA action state None
Network Working Group                                          J. Merkle
Internet-Draft                                 secunet Security Networks
Updates: 4492 (if approved)                                   M. Lochter
Intended status: Informational          Bundesamt fuer Sicherheit in der
Expires: December 26, 2013                     Informationstechnik (BSI)
                                                           June 24, 2013

        ECC Brainpool Curves for Transport Layer Security (TLS)
                     draft-merkle-tls-brainpool-02

Abstract

   This document specifies the use of several ECC Brainpool curves for
   authentication and key exchange in the Transport Layer Security (TLS)
   protocol.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on December 26, 2013.

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   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  Security Considerations . . . . . . . . . . . . . . . . . . . . 4
   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 5
   4.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 6
     4.1.  Normative References  . . . . . . . . . . . . . . . . . . . 6
     4.2.  Informative References  . . . . . . . . . . . . . . . . . . 6
   Appendix A.  Test Vectors . . . . . . . . . . . . . . . . . . . . . 8
     A.1.  256 Bit Curve . . . . . . . . . . . . . . . . . . . . . . . 8
     A.2.  384 Bit Curve . . . . . . . . . . . . . . . . . . . . . . . 9
     A.3.  512 Bit Curve . . . . . . . . . . . . . . . . . . . . . . . 9

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1.  Introduction

   In [RFC5639], a new set of elliptic curve groups over finite prime
   fields for use in cryptographic applications was specified.  These
   groups, denoted as ECC 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].

   Usage of elliptic curves for authentication and key agreement in TLS
   1.0 and TLS 1.1 is defined in [RFC4492].  While the ASN.1 object
   identifiers defined in [RFC5639] already allow usage of the ECC
   Brainpool curves for TLS (client or server) authentication through
   reference in X.509 certificates according to [RFC3279] and [RFC5480]
   , their negotiation for key exchange according to [RFC4492] requires
   the definition and assignment of additional NamedCurve IDs.  This
   document specifies such values for three curves from [RFC5639].

   Test vectors for a Diffie-Hellman key exchange using these ECC
   Brainpool curves are provided in Appendix A

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2.  Security Considerations

   The security considerations of [RFC5246] apply accordingly.

   The confidentiality, authenticity and integrity of the TLS
   communication is limited by the weakest cryptographic primitive
   applied.  In order to achieve a maximum security level when using one
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