ECC Brainpool Curves for Transport Layer Security (TLS)
draft-merkle-tls-brainpool-01

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Document Type Active Internet-Draft (individual in sec area)
Last updated 2013-06-21 (latest revision 2013-05-13)
Stream IETF
Intended RFC status Informational
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Document shepherd Dan Harkins
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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
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: November 14, 2013                     Informationstechnik (BSI)
                                                            May 13, 2013

        ECC Brainpool Curves for Transport Layer Security (TLS)
                     draft-merkle-tls-brainpool-01

Abstract

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

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   This Internet-Draft will expire on November 14, 2013.

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Values to be Used in the Supported Elliptic Curve Extension  .  4
   3.  Security Considerations  . . . . . . . . . . . . . . . . . . .  5
   4.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  6
   5.  Intellectual Property Rights . . . . . . . . . . . . . . . . .  7
   6.  References . . . . . . . . . . . . . . . . . . . . . . . . . .  8
     6.1.  Normative References . . . . . . . . . . . . . . . . . . .  8
     6.2.  Informative References . . . . . . . . . . . . . . . . . .  8
   Appendix A.  Test Vectors  . . . . . . . . . . . . . . . . . . . . 10
     A.1.  256 Bit Curve  . . . . . . . . . . . . . . . . . . . . . . 10
     A.2.  384 Bit Curve  . . . . . . . . . . . . . . . . . . . . . . 11
     A.3.  512 Bit Curve  . . . . . . . . . . . . . . . . . . . . . . 11

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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], 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].

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2.  Values to be Used in the Supported Elliptic Curve Extension

   According to [RFC4492], the Supported Elliptic Curve Extension allows
   the negotiation of elliptic curve groups during a handshake starting
   a new TLS session.  A client that proposes ECC cipher suites in its
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