More Raw Public Keys for IKEv2
draft-kivinen-ipsecme-oob-pubkey-10

 
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Last updated 2015-04-21 (latest revision 2015-04-20)
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IP Security Maintenance and Extensions (ipsecme)              T. Kivinen
Internet-Draft                                             INSIDE Secure
Updates: 7296 (if approved)                                   P. Wouters
Intended status: Standards Track                                 Red Hat
Expires: October 22, 2015                                  H. Tschofenig
                                                          April 20, 2015

                     More Raw Public Keys for IKEv2
                draft-kivinen-ipsecme-oob-pubkey-10.txt

Abstract

   The Internet Key Exchange Version 2 (IKEv2) protocol currently only
   supports raw RSA keys.  In constrained environments it is useful to
   make use of other types of public keys, such as those based on
   Elliptic Curve Cryptography.  This documents adds support for other
   types of raw public keys to IKEv2.

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
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   This Internet-Draft will expire on October 22, 2015.

Copyright Notice

   Copyright (c) 2015 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

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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Certificate Encoding Payload  . . . . . . . . . . . . . . . .   3
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   5
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   5
   Appendix A.  Examples . . . . . . . . . . . . . . . . . . . . . .   6
     A.1.  ECDSA Example . . . . . . . . . . . . . . . . . . . . . .   6
     A.2.  RSA Example . . . . . . . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   Secure DNS allows public keys to be associated with domain names for
   usage with security protocols like Internet Key Exchange Version 2
   (IKEv2) [RFC7296] and Transport Layer Security (TLS) [RFC5246] but it
   relies on extensions in those protocols to be specified.

   In [RFC5996] IKEv2 had support for PKCS #1 encoded RSA keys, i.e., a
   DER-encoded RSAPublicKey structure (see [RSA] and [RFC3447]).  Other
   raw public key types are, however, not supported.  In [RFC7296] this
   feature was removed, and this document adds support for raw public
   keys back to IKEv2 in a more generic way.

   The TLS Out-of-Band Public Key Validation specification ([RFC7250])
   adds generic support for raw public keys to TLS by re-using the
   SubjectPublicKeyInfo format from the X.509 Public Key Infrastructure
   Certificate profile [RFC5280].

   This document is similar to the TLS Out-of-Band Public Key Validation
   specification, and applies the concept to IKEv2 to support all public
   key formats defined by PKIX.  This approach also allows future public
   key extensions to be supported without the need to introduce further
   enhancements to IKEv2.

   To support new types of public keys in IKEv2 the following changes
   are needed:

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