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

• Status
• IESG evaluation record
• IESG writeups
• Email expansions
• History

• Versions
• 00
• 01
• 02
• 03
• 04

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.

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 http://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 November 14, 2013.

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.

Merkle & Lochter        Expires November 14, 2013               [Page 1]
Internet-Draft        ECC Brainpool Curves for TLS              May 2013

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

Merkle & Lochter        Expires November 14, 2013               [Page 2]
Internet-Draft        ECC Brainpool Curves for TLS              May 2013

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].

Merkle & Lochter        Expires November 14, 2013               [Page 3]
Internet-Draft        ECC Brainpool Curves for TLS              May 2013

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
   ClientHello message SHOULD include this extension to indicate the
   elliptic curves it supports through NamedCurve IDs, and a server that
   receives a ClientHello containing this extension MUST use the
   client's enumerated capabilities to guide its selection of an