Certificate Profile and Certificate Management for SEcure Neighbor Discovery (SEND)
RFC 6494

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Internet Engineering Task Force (IETF)                       R. Gagliano
Request for Comments: 6494                                 Cisco Systems
Updates: 3971                                                S. Krishnan
Category: Standards Track                                       Ericsson
ISSN: 2070-1721                                                 A. Kukec
                                                   Enterprise Architects
                                                           February 2012

           Certificate Profile and Certificate Management for
                    SEcure Neighbor Discovery (SEND)

Abstract

   SEcure Neighbor Discovery (SEND) utilizes X.509v3 certificates for
   performing router authorization.  This document specifies a
   certificate profile for SEND based on resource certificates along
   with extended key usage values required for SEND.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6494.

Copyright Notice

   Copyright (c) 2012 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.

Gagliano, et al.             Standards Track                    [Page 1]
RFC 6494         SEND Certificate Profile and Management   February 2012

Table of Contents

   1. Introduction ....................................................2
   2. Requirements Notation ...........................................3
   3. Terminology .....................................................3
   4. SEND Certificate Profile ........................................4
      4.1. Unconstrained Certified Subnet Prefixes ....................4
   5. Deployment Models ...............................................5
   6. Trust Anchor Material ...........................................5
   7. Extended Key Usage Values .......................................6
   8. CRL Profile and Revocation ......................................7
      8.1. Online Certificate Status Protocol (OCSP) Considerations ...7
   9. Certificate Validation ..........................................8
   10. IANA Considerations ............................................8
   11. Security Considerations ........................................8
   12. Acknowledgements ...............................................8
   13. References .....................................................9
      13.1. Normative References ......................................9
      13.2. Informative References ....................................9
   Appendix A. Router Authorization Certificate Example ..............10
   Appendix B. ASN.1 Module ..........................................11

1.  Introduction

   SEcure Neighbor Discovery (SEND) [RFC3971] utilizes X.509v3
   certificates that include the [RFC3779] extension for IPv6 addresses
   to certify a router's authorization to advertise the IPv6 prefix for
   the Neighbor Discovery (ND) protocol.  The SEND specification defines
   a basic certificate profile for SEND.  The certificate profile
   defined in this document supersedes the profile for Router
   Authorization Certificates specified in [RFC3971].  That is,
   certificates used in SEND (by routers, proxies, or address owners)
   MUST conform to this certificate profile and MAY conform to the
   original profile in [RFC3971].

   The Resource Public Key Infrastructure (RPKI) is the global PKI that
   attests to the allocation of IP address space.  The RPKI represents
   the centralized model discussed in Section 6.2 of [RFC3971].
   Consequently, SEND will use the RPKI Certificate Profile and
   certificate validation detailed in [RFC6487].  Consequently, the
   certificate validation method described in [RFC3971] is updated with
   the certificate validation method in [RFC6487].

   Since the [RFC3779] IPv6 address extension does not mention what
   functions the node can perform for the certified IPv6 space, it
   becomes impossible to know the reason for which the certificate was