A profile for Resource Tagged Attestations (RTAs)
draft-michaelson-rpki-rta-00

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Last updated 2018-10-19
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Network Working Group                                      G. Michaelson
Internet-Draft                                                 G. Huston
Intended status: Experimental                                      APNIC
Expires: April 22, 2019                                   T. Bruijnzeels
                                                             M. Hoffmann
                                                             opennetlabs
                                                        October 19, 2018

           A profile for Resource Tagged Attestations (RTAs)
                      draft-michaelson-rpki-rta-00

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 attestion with an arbitrary set of resources.

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   This Internet-Draft will expire on April 22, 2019.

Copyright Notice

   Copyright (c) 2018 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
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   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents

Michaelson, et al.       Expires April 22, 2019                 [Page 1]
Internet-Draft                     RTA                      October 2018

   carefully, as they describe your rights and restrictions with respect
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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.  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 . . . . . . . . . . . . . . . . . . . . . . . .   5
     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 . . . . . . . .   8
   8.  Standalone Use  . . . . . . . . . . . . . . . . . . . . . . .   8
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   10. Security Considerations . . . . . . . . . . . . . . . . . . .   9
   11. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  10
   12. Normative References  . . . . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   This document defines a Cryptographic Mesage 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 attestion with a set of resources by the duly
   delegated resource holder(s).

   The RTA makes use of the template for RPKI Digitally Signed Objects
   [RFC6488], which defines a CMS wrapper for the RTA content, as well
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