A Voucher Artifact for Bootstrapping Protocols
RFC 8366

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Internet Engineering Task Force (IETF)                         K. Watsen
Request for Comments: 8366                              Juniper Networks
Category: Standards Track                                  M. Richardson
ISSN: 2070-1721                                       Sandelman Software
                                                             M. Pritikin
                                                           Cisco Systems
                                                               T. Eckert
                                                                  Huawei
                                                                May 2018

             A Voucher Artifact for Bootstrapping Protocols

Abstract

   This document defines a strategy to securely assign a pledge to an
   owner using an artifact signed, directly or indirectly, by the
   pledge's manufacturer.  This artifact is known as a "voucher".

   This document defines an artifact format as a YANG-defined JSON
   document that has been signed using a Cryptographic Message Syntax
   (CMS) structure.  Other YANG-derived formats are possible.  The
   voucher artifact is normally generated by the pledge's manufacturer
   (i.e., the Manufacturer Authorized Signing Authority (MASA)).

   This document only defines the voucher artifact, leaving it to other
   documents to describe specialized protocols for accessing it.

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 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8366.

Watsen, et al.               Standards Track                    [Page 1]
RFC 8366                     Voucher Profile                    May 2018

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
   Provisions Relating to IETF Documents
   (https://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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Requirements Language . . . . . . . . . . . . . . . . . . . .   5
   4.  Survey of Voucher Types . . . . . . . . . . . . . . . . . . .   5
   5.  Voucher Artifact  . . . . . . . . . . . . . . . . . . . . . .   7
     5.1.  Tree Diagram  . . . . . . . . . . . . . . . . . . . . . .   8
     5.2.  Examples  . . . . . . . . . . . . . . . . . . . . . . . .   8
     5.3.  YANG Module . . . . . . . . . . . . . . . . . . . . . . .   9
     5.4.  CMS Format Voucher Artifact . . . . . . . . . . . . . . .  15
   6.  Design Considerations . . . . . . . . . . . . . . . . . . . .  16
     6.1.  Renewals Instead of Revocations . . . . . . . . . . . . .  16
     6.2.  Voucher Per Pledge  . . . . . . . . . . . . . . . . . . .  17
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  17
     7.1.  Clock Sensitivity . . . . . . . . . . . . . . . . . . . .  17
     7.2.  Protect Voucher PKI in HSM  . . . . . . . . . . . . . . .  17
     7.3.  Test Domain Certificate Validity When Signing . . . . . .  17
     7.4.  YANG Module Security Considerations . . . . . . . . . . .  18
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  18
     8.1.  The IETF XML Registry . . . . . . . . . . . . . . . . . .  18
     8.2.  The YANG Module Names Registry  . . . . . . . . . . . . .  19
     8.3.  The Media Types Registry  . . . . . . . . . . . . . . . .  19
     8.4.  The SMI Security for S/MIME CMS Content Type Registry . .  20
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  20
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  20
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  21
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .  23
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  23

Watsen, et al.               Standards Track                    [Page 2]
RFC 8366                     Voucher Profile                    May 2018