ECC Brainpool Curves for Transport Layer Security (TLS) Version 1.3
draft-bruckert-brainpool-for-tls13-01

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Network Working Group                                        L. Bruckert
Internet-Draft                                                 J. Merkle
Intended status: Informational                 secunet Security Networks
Expires: March 30, 2019                                       M. Lochter
                                                                     BSI
                                                      September 26, 2018

  ECC Brainpool Curves for Transport Layer Security (TLS) Version 1.3
                 draft-bruckert-brainpool-for-tls13-01

Abstract

   This document specifies the use of several ECC Brainpool curves for
   authentication and key exchange in the Transport Layer Security (TLS)
   protocol version 1.3.

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   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on March 30, 2019.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Brainpool NamedGroup Types  . . . . . . . . . . . . . . . . .   2
   3.  Brainpool SignatureScheme Types . . . . . . . . . . . . . . .   3
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   3
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     6.2.  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
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

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].

   [RFC8422] defines the usage of elliptic curves for authentication and
   key agreement in TLS 1.2 and earlier versions, and [RFC7027] defines
   the usage of the ECC Brainpool curves for authentication and key
   exchange in TLS.  The latter is applicable to TLS 1.2 and earlier
   versions, but not to TLS 1.3 that deprecates the ECC Brainpool Curve
   IDs registered for the use of ECC Brainpool Curves in earlier TLS
   versions.

   The negotiation of ECC Brainpool Curves for key exchange according to
   [RFC8446] requires the definition and assignment of additional
   NamedGroup IDs.  This document specifies such values for three curves
   from [RFC5639].

   The negotiation of ECC Brainpool Curves for authentication according
   to [RFC8446] requires the definition and assignment of additional
   SignatureScheme IDs.  This document specifies such values for three
   curves from [RFC5639].

2.  Brainpool NamedGroup Types

   According to [RFC8446], the name space NamedGroup is used for the
   negotiation of elliptic curve groups for key exchange during a
   handshake starting a new TLS session.  This document adds new

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   NamedGroup types to three elliptic curves defined in [RFC5639] as
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