OSCORE profile of the Authentication and Authorization for Constrained Environments Framework
draft-ietf-ace-oscore-profile-04

Document Type Active Internet-Draft (ace WG)
Last updated 2018-10-08
Replaces draft-seitz-ace-oscoap-profile
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Stream WG state In WG Last Call (wg milestones: Sep 2018 - WGLC on OSCORE Profi..., Nov 2018 - Submit ACE profile f... )
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ACE Working Group                                           F. Palombini
Internet-Draft                                               Ericsson AB
Intended status: Standards Track                                L. Seitz
Expires: April 11, 2019                                     RISE SICS AB
                                                             G. Selander
                                                             Ericsson AB
                                                           M. Gunnarsson
                                                            RISE SICS AB
                                                         October 8, 2018

 OSCORE profile of the Authentication and Authorization for Constrained
                         Environments Framework
                    draft-ietf-ace-oscore-profile-04

Abstract

   This memo specifies a profile for the Authentication and
   Authorization for Constrained Environments (ACE) framework.  It
   utilizes Object Security for Constrained RESTful Environments
   (OSCORE) to provide communication security, server authentication,
   and proof-of-possession for a key owned by the client and bound to an
   OAuth 2.0 access token.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on April 11, 2019.

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

Palombini, et al.        Expires April 11, 2019                 [Page 1]
Internet-Draft            OSCORE Profile of ACE             October 2018

   (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
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Protocol Overview . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Client-AS Communication . . . . . . . . . . . . . . . . . . .   5
     3.1.  C-to-AS: POST /token  . . . . . . . . . . . . . . . . . .   5
     3.2.  AS-to-C: Access Token . . . . . . . . . . . . . . . . . .   7
   4.  Client-RS Communication . . . . . . . . . . . . . . . . . . .  11
     4.1.  C-to-RS: POST /authz-info . . . . . . . . . . . . . . . .  12
     4.2.  RS-to-C: 2.01 (Created) . . . . . . . . . . . . . . . . .  12
     4.3.  OSCORE Setup  . . . . . . . . . . . . . . . . . . . . . .  13
     4.4.  Access rights verification  . . . . . . . . . . . . . . .  15
   5.  Secure Communication with AS  . . . . . . . . . . . . . . . .  15
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  15
   7.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  16
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  17
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  18
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  19
   Appendix A.  Profile Requirements . . . . . . . . . . . . . . . .  19
   Appendix B.  Using the pop-key with EDHOC (EDHOC+OSCORE)  . . . .  20
     B.1.  Using Asymmetric Keys . . . . . . . . . . . . . . . . . .  20
     B.2.  Using Symmetric Keys  . . . . . . . . . . . . . . . . . .  22
     B.3.  Processing  . . . . . . . . . . . . . . . . . . . . . . .  24
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .  25
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  26

1.  Introduction

   This memo specifies a profile of the ACE framework
   [I-D.ietf-ace-oauth-authz].  In this profile, a client and a resource
   server use CoAP [RFC7252] to communicate.  The client uses an access
   token, bound to a key (the proof-of-possession key) to authorize its
   access to the resource server.  In order to provide communication
   security, proof of possession, and server authentication they use
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