Delegated Authority for Bootstrap Voucher Artifacts
draft-richardson-anima-voucher-delegation-02
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anima Working Group                                        M. Richardson
Internet-Draft                                  Sandelman Software Works
Intended status: Standards Track                                 J. Yang
Expires: March 22, 2021                    Huawei Technologies Co., Ltd.
                                                      September 18, 2020

          Delegated Authority for Bootstrap Voucher Artifacts
              draft-richardson-anima-voucher-delegation-02

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).

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   This Internet-Draft will expire on March 22, 2021.

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Richardson & Yang        Expires March 22, 2021                 [Page 1]
Internet-Draft              delegated-voucher             September 2020

   include Simplified BSD License text as described in Section 4.e of
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements for the Delegation . . . . . . . . . . . . .   3
       1.1.1.  Device Onboarding with 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.  Delegation Voucher Artifact . . . . . . . . . . . . . . . . .   5
     3.1.  YANG Module . . . . . . . . . . . . . . . . . . . . . . .   6
     3.2.  Bundling of The Vouchers  . . . . . . . . . . . . . . . .   9
     3.3.  Delegation of Multiple Devices  . . . . . . . . . . . . .   9
   4.  Enhanced Pledge Behavior  . . . . . . . . . . . . . . . . . .   9
   5.  Changes to Registrar Behavior . . . . . . . . . . . . . . . .  10
     5.1.  Discovering The Most Recent Delegated Authority to Use  .  10
   6.  Applying The Delegation Voucher to Requirements . . . . . . .  11
     6.1.  Case 1: Resale  . . . . . . . . . . . . . . . . . . . . .  11
     6.2.  Case 2: Assembly  . . . . . . . . . . . . . . . . . . . .  12
   7.  Constraints on Pinning The Delegated Authority  . . . . . . .  12
   8.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  12
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
     9.1.  YANG Module Security Considerations . . . . . . . . . . .  12
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
     10.1.  The IETF XML Registry  . . . . . . . . . . . . . . . . .  13
     10.2.  YANG Module Names Registry . . . . . . . . . . . . . . .  13
   11. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  13
   12. Changelog . . . . . . . . . . . . . . . . . . . . . . . . . .  13
   13. References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     13.1.  Normative References . . . . . . . . . . . . . . . . . .  13
     13.2.  Informative References . . . . . . . . . . . . . . . . .  14
   Appendix A.  Extra references . . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   The [RFC8366] voucher artifact provides a proof from a manufacturer's
   authorizing signing authority (MASA) of the intended owner of a
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