Third-Party Device Attestation for ACME
draft-yusef-acme-3rd-party-device-attestation-01

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ACME Working Group                                        R. Shekh-Yusef
Internet-Draft                                                     Avaya
Intended status: Standards Track                        January 16, 2019
Expires: July 20, 2019

                Third-Party Device Attestation for ACME
            draft-yusef-acme-3rd-party-device-attestation-01

Abstract

   This document defines a Third-Party Device Attestation for ACME
   mechanism to allow the ACME CA to delegate some of its authentication
   and authorization functions to a separate trusted entity, to automate
   the issuance of certificates to devices.

Status of This Memo

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   This Internet-Draft will expire on July 20, 2019.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Entities  . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.2.  Use Case  . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.3.  Initial Trust . . . . . . . . . . . . . . . . . . . . . .   4
     2.4.  Protocol Flow . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Identifier Type . . . . . . . . . . . . . . . . . . . . . . .   7
   4.  Applying for a Certificate  . . . . . . . . . . . . . . . . .   7
   5.  ACME Challenge  . . . . . . . . . . . . . . . . . . . . . . .   7
   6.  Complete Authorization  . . . . . . . . . . . . . . . . . . .   8
   7.  Device Access Token . . . . . . . . . . . . . . . . . . . . .   8
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   9
   11. Normative References  . . . . . . . . . . . . . . . . . . . .   9
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   ACME [I-D.ietf-acme-acme] is a mechanism for automating certificate
   management on the Internet.  It enables administrative entities to
   prove effective control over resources like domain names, and
   automates the process of generating and issuing certificates.

   Proving effective control over a device requires an attestation from
   a third-party who has authority over the device.

   This document defines a Third-Party Device Attestation for ACME
   mechanism to allow the ACME CA to delegate some of its authentication
   and authorization functions to a separate trusted entity, to automate
   the issuance of certificates to devices.

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