A Profile for Route Origin Authorizations (ROAs)
RFC 6482

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Internet Engineering Task Force (IETF)                       M. Lepinski
Request for Comments: 6482                                       S. Kent
Category: Standards Track                                        D. Kong
ISSN: 2070-1721                                         BBN Technologies
                                                           February 2012

            A Profile for Route Origin Authorizations (ROAs)

Abstract

   This document defines a standard profile for Route Origin
   Authorizations (ROAs).  A ROA is a digitally signed object that
   provides a means of verifying that an IP address block holder has
   authorized an Autonomous System (AS) to originate routes to one or
   more prefixes within the address block.

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/rfc6482.

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.

Lepinksi, et al.             Standards Track                    [Page 1]
RFC 6482               Route Origin Authorization          February 2012

Table of Contents

   1. Introduction ....................................................2
      1.1. Terminology ................................................3
   2. The ROA Content-Type ............................................3
   3. The ROA eContent ................................................3
      3.1. version ....................................................4
      3.2. asID .......................................................4
      3.3. ipAddrBlocks ...............................................4
   4. ROA Validation ..................................................5
   5. Security Considerations .........................................5
   6. Acknowledgments .................................................6
   7. References ......................................................6
      7.1. Normative References .......................................6
      7.2. Informative References .....................................6
    Appendix A: ASN.1  Module..........................................8

1. Introduction

   The primary purpose of the Resource Public Key Infrastructure (RPKI)
   is to improve routing security.  (See [RFC6480] for more
   information.)  As part of this system, a mechanism is needed to allow
   entities to verify that an AS has been given permission by an IP
   address block holder to advertise routes to one or more prefixes
   within that block.  A ROA provides this function.

   The ROA makes use of the template for RPKI digitally signed objects
   [RFC6488], which defines a Crytopgraphic Message Syntax (CMS)
   [RFC5652] wrapper for the ROA content as well as a generic validation
   procedure for RPKI signed objects.  Therefore, to complete the
   specification of the ROA (see Section 4 of [RFC6488]), this document
   defines:

      1. The OID that identifies the signed object as being a ROA.
         (This OID appears within the eContentType in the
         encapContentInfo object as well as the content-type signed
         attribute in the signerInfo object).

      2. The ASN.1 syntax for the ROA eContent.  (This is the payload
         that specifies the AS being authorized to originate routes as
         well as the prefixes to which the AS may originate routes.)
         The ROA eContent is ASN.1 encoded using the Distinguished
         Encoding Rules (DER) [X.690].

      3. An additional step required to validate ROAs (in addition to
         the validation steps specified in [RFC6488]).

Lepinksi, et al.             Standards Track                    [Page 2]
RFC 6482               Route Origin Authorization          February 2012

1.1.  Terminology

   It is assumed that the reader is familiar with the terms and concepts
   described in "Internet X.509 Public Key Infrastructure Certificate