A profile for Resource Tagged Attestations (RTAs)
draft-michaelson-rpki-rta-01

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Network Working Group                                      G. Michaelson
Internet-Draft                                                 G. Huston
Intended status: Experimental                                T. Harrison
Expires: September 8, 2019                                         APNIC
                                                          T. Bruijnzeels
                                                             M. Hoffmann
                                                             opennetlabs
                                                           March 7, 2019

           A profile for Resource Tagged Attestations (RTAs)
                      draft-michaelson-rpki-rta-01

Abstract

   This document defines a Cryptographic Message Syntax (CMS) profile
   for a general purpose Resource Tagged Attestation (RTA), for use with
   the Resource Public Key Infrastructure (RPKI).  The objective is to
   allow an attestation, in the form of an arbitrary digital object, to
   be signed "with resources", and for validation to provide an outcome
   of "valid with resources".  The profile is intended to provide for
   the signing of an attestation with an arbitrary set of resources.

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 September 8, 2019.

Copyright Notice

   Copyright (c) 2019 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
   (https://trustee.ietf.org/license-info) in effect on the date of

Michaelson, et al.      Expires September 8, 2019               [Page 1]
Internet-Draft                     RTA                        March 2019

   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
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   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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions Used In This Document . . . . . . . . . . . . . .   3
   3.  RTA Profile . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  The RTA ContentType . . . . . . . . . . . . . . . . . . . . .   4
   5.  The RTA eContent  . . . . . . . . . . . . . . . . . . . . . .   4
     5.1.  version . . . . . . . . . . . . . . . . . . . . . . . . .   5
     5.2.  subjectKeyIdentifiers . . . . . . . . . . . . . . . . . .   5
     5.3.  resources . . . . . . . . . . . . . . . . . . . . . . . .   6
     5.4.  digestAlgorithm . . . . . . . . . . . . . . . . . . . . .   6
     5.5.  messageDigest . . . . . . . . . . . . . . . . . . . . . .   6
     5.6.  attestations  . . . . . . . . . . . . . . . . . . . . . .   6
   6.  RTA Validation  . . . . . . . . . . . . . . . . . . . . . . .   6
   7.  Need for Canonicalization . . . . . . . . . . . . . . . . . .   7
     7.1.  ASCII, UTF-8, and HTML File Canonicalization  . . . . . .   7
     7.2.  XML File Canonicalization . . . . . . . . . . . . . . . .   8
     7.3.  No Canonicalization of Other File Formats . . . . . . . .   9
   8.  Standalone Use  . . . . . . . . . . . . . . . . . . . . . . .   9
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   10. Security Considerations . . . . . . . . . . . . . . . . . . .   9
   11. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  10
   12. Revision history  . . . . . . . . . . . . . . . . . . . . . .  10
   13. Normative References  . . . . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   This document defines a Cryptographic Message Syntax (CMS) [RFC5652]
   profile for a general purpose Resource Tagged Attestation (RTA), for
   use with the Resource Public Key Infrastructure (RPKI) [RFC6480].  An
   RTA allows an arbitrary digital object to be signed "with resources,"
   and for validation of the digital signature to provide an outcome of
   "valid with resources."  The profile is intended to provide for the
   signing of a arbitrary attestation with a set of resources by the