Delegated Authority for Bootstrap Voucher Artifacts
draft-richardson-anima-voucher-delegation-00
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anima Working Group                                        M. Richardson
Internet-Draft                                  Sandelman Software Works
Intended status: Standards Track                        January 06, 2020
Expires: July 9, 2020

          Delegated Authority for Bootstrap Voucher Artifacts
              draft-richardson-anima-voucher-delegation-00

Abstract

   This document describes an extension of the RFC8366 Voucher Artifact
   in order to support delegation of signing authority.  The initial
   voucher pins a public identity, and that public indentity can then
   issue additional vouchers.  This chain of authorization can support
   permission-less resale of devices, as well as guarding against
   business failure of the BRSKI [I-D.ietf-anima-bootstrapping-keyinfra]
   Manufacturer Authorized Signing Authority (MASA).

Status of This Memo

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   This Internet-Draft will expire on July 9, 2020.

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   Copyright (c) 2020 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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   include Simplified BSD License text as described in Section 4.e of

Richardson                Expires July 9, 2020                  [Page 1]
Internet-Draft              delegated-voucher               January 2020

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements for the delegation . . . . . . . . . . . . .   3
       1.1.1.  Disconnected or Offline MASA  . . . . . . . . . . . .   3
       1.1.2.  Resale of devices . . . . . . . . . . . . . . . . . .   3
       1.1.3.  Crypto-agility for Registrar  . . . . . . . . . . . .   3
       1.1.4.  Transparent Assemblers/Value-Added-Resellers  . . . .   4
     1.2.  Overview of proposed solution . . . . . . . . . . . . . .   4
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Delegated Voucher artifact  . . . . . . . . . . . . . . . . .   5
     3.1.  YANG module . . . . . . . . . . . . . . . . . . . . . . .   5
     3.2.  Bundling of the vouchers  . . . . . . . . . . . . . . . .   8
     3.3.  Delegation of multiple devices  . . . . . . . . . . . . .   8
   4.  Enhanced Pledge behaviour . . . . . . . . . . . . . . . . . .   8
   5.  Changes to Registrar behaviour  . . . . . . . . . . . . . . .   9
     5.1.  Discoverying the most recent Delegated Authority to use .   9
   6.  Applying the delegated voucher to requirements  . . . . . . .  10
     6.1.  applicability one . . . . . . . . . . . . . . . . . . . .  10
     6.2.  applicability two . . . . . . . . . . . . . . . . . . . .  10
   7.  Constraints on pinning the Delegated Authority  . . . . . . .  10
   8.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  11
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
     9.1.  YANG Module Security Considerations . . . . . . . . . . .  11
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
     10.1.  The IETF XML Registry  . . . . . . . . . . . . . . . . .  11
     10.2.  YANG Module Names Registry . . . . . . . . . . . . . . .  11
   11. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  12
   12. Changelog . . . . . . . . . . . . . . . . . . . . . . . . . .  12
   13. References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     13.1.  Normative References . . . . . . . . . . . . . . . . . .  12
     13.2.  Informative References . . . . . . . . . . . . . . . . .  12
   Appendix A.  Extra references . . . . . . . . . . . . . . . . . .  13
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  13

1.  Introduction

   The [RFC8366] voucher artifact provides a proof from a manufacturer's
   authorizing signing authority (MASA) of the intended owner of a
   device.  This is used by an onboarding Pledge device in BRSKI
   ([I-D.ietf-anima-bootstrapping-keyinfra],
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