Resource Public Key Infrastructure (RPKI) Trust Anchor Locator
RFC 7730

Document Type RFC - Proposed Standard (January 2016; No errata)
Obsoletes RFC 6490
Last updated 2016-01-12
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IESG IESG state RFC 7730 (Proposed Standard)
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Responsible AD Alvaro Retana
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IANA IANA review state Version Changed - Review Needed
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Internet Engineering Task Force (IETF)                         G. Huston
Request for Comments: 7730                                         APNIC
Obsoletes: 6490                                                S. Weiler
Category: Standards Track                                        Parsons
ISSN: 2070-1721                                            G. Michaelson
                                                                   APNIC
                                                                 S. Kent
                                                                     BBN
                                                            January 2016

     Resource Public Key Infrastructure (RPKI) Trust Anchor Locator

Abstract

   This document defines a Trust Anchor Locator (TAL) for the Resource
   Public Key Infrastructure (RPKI).  This document obsoletes RFC 6490
   by adding support for multiple URIs in a TAL.

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/rfc7730.

Copyright Notice

   Copyright (c) 2016 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.

Huston, et al.               Standards Track                    [Page 1]
RFC 7730                RPKI Trust Anchor Locator           January 2016

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Trust Anchor Locator  . . . . . . . . . . . . . . . . . . . .   2
     2.1.  Trust Anchor Locator Format . . . . . . . . . . . . . . .   2
     2.2.  TAL and Trust Anchor Certificate Considerations . . . . .   3
     2.3.  Example . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Relying Party Use . . . . . . . . . . . . . . . . . . . . . .   5
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   5.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     5.1.  Normative References  . . . . . . . . . . . . . . . . . .   6
     5.2.  Informative References  . . . . . . . . . . . . . . . . .   7
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   This document defines a Trust Anchor Locator (TAL) for the Resource
   Public Key Infrastructure (RPKI) [RFC6480].  This format may be used
   to distribute trust anchor material using a mix of out-of-band and
   online means.  Procedures used by Relying Parties (RPs) to verify
   RPKI signed objects SHOULD support this format to facilitate
   interoperability between creators of trust anchor material and RPs.
   This document obsoletes RFC 6490 by adding support for multiple URIs
   in a TAL.

1.1.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

2.  Trust Anchor Locator

2.1.  Trust Anchor Locator Format

   This document does not propose a new format for trust anchor
   material.  A trust anchor in the RPKI is represented by a self-signed
   X.509 Certification Authority (CA) certificate, a format commonly
   used in PKIs and widely supported by RP software.  This document
   specifies a format for data used to retrieve and verify the
   authenticity of a trust anchor in a very simple fashion.  That data
   is referred to as the TAL.

   The motivation for defining the TAL is to enable selected data in the
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