Security and Operational considerations for manufacturer installed keys and anchors
draft-richardson-secdispatch-idevid-considerations-02

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anima Working Group                                        M. Richardson
Internet-Draft                                  Sandelman Software Works
Intended status: Standards Track                                 J. Yang
Expires: 28 January 2021                   Huawei Technologies Co., Ltd.
                                                            27 July 2020

Security and Operational considerations for manufacturer installed keys
                              and anchors
         draft-richardson-secdispatch-idevid-considerations-02

Abstract

   This document provides a nomenclature to describe ways in which
   manufacturers secure private keys and public trust anchors in
   devices.

   RFCEDITOR: please remove this paragraph.  This work is occuring in
   https://github.com/mcr/idevid-security-considerations

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on 28 January 2021.

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Richardson & Yang        Expires 28 January 2021                [Page 1]
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   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
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   provided without warranty as described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Applicability Model . . . . . . . . . . . . . . . . . . . . .   5
     2.1.  A reference manufacturing/boot process  . . . . . . . . .   6
   3.  Types of Trust Anchors  . . . . . . . . . . . . . . . . . . .   7
     3.1.  Secured First Boot Trust Anchor . . . . . . . . . . . . .   8
     3.2.  Software Update Trust Anchor  . . . . . . . . . . . . . .   8
     3.3.  Trusted Application Manager anchor  . . . . . . . . . . .   8
     3.4.  Public WebPKI anchors . . . . . . . . . . . . . . . . . .   9
     3.5.  DNSSEC root . . . . . . . . . . . . . . . . . . . . . . .   9
     3.6.  What else?  . . . . . . . . . . . . . . . . . . . . . . .   9
   4.  Types of Identities . . . . . . . . . . . . . . . . . . . . .   9
     4.1.  Manufacturer installed IDevID certificates  . . . . . . .  10
       4.1.1.  Operational Considerations for Manufacturer IDevID
               Public Key Infrastructure . . . . . . . . . . . . . .  10
       4.1.2.  Key Generation process  . . . . . . . . . . . . . . .  11
   5.  Public Key Infrastructures (PKI)  . . . . . . . . . . . . . .  14
     5.1.  Number of levels of certification authorities . . . . . .  14
     5.2.  Protection of CA private keys . . . . . . . . . . . . . .  15
     5.3.  Supporting provisioned anchors in devices . . . . . . . .  16
   6.  Evaluation Questions  . . . . . . . . . . . . . . . . . . . .  16
     6.1.  Integrity and Privacy of on-device data . . . . . . . . .  16
     6.2.  Integrity and Privacy of device identify
           infrastructure  . . . . . . . . . . . . . . . . . . . . .  17
     6.3.  Integrity and Privacy of included trust anchors . . . . .  17
   7.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  18
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  18
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  18
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  18
   11. Changelog . . . . . . . . . . . . . . . . . . . . . . . . . .  18
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  18
     12.2.  Informative References . . . . . . . . . . . . . . . . .  19
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  23

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