OSCOAP profile of ACE
draft-seitz-ace-oscoap-profile-01

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Last updated 2016-10-31
Replaces draft-seitz-ace-ocsoap-profile
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ACE Working Group                                               L. Seitz
                                                        SICS Swedish ICT
Internet-Draft                                              F. Palombini
Intended Status: Standards Track                             Ericsson AB
Expires: May 4, 2017                                    October 31, 2016

                         OSCOAP profile of ACE
                   draft-seitz-ace-oscoap-profile-01

Abstract

   This memo specifies a profile for the ACE framework for
   Authentication and Authorization.  It utilizes Object Security of
   CoAP (OSCOAP) and Ephemeral Diffie-Hellman over COSE (EDHOC) 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 to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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Copyright and License Notice

   Copyright (c) 2016 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
 

Seitz, L.                 Expires May 4, 2017                   [Page 1]
INTERNET DRAFT           OSCOAP profile of ACE          October 31, 2016

   Provisions Relating to IETF Documents
   (http://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
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1  Terminology . . . . . . . . . . . . . . . . . . . . . . . .  3
   2. Client to Resource Server . . . . . . . . . . . . . . . . . . .  4
     2.1. Signaling the use of OSCOAP . . . . . . . . . . . . . . . .  4
     2.2. Key establishment for OSCOAP  . . . . . . . . . . . . . . .  4
   3. Client to Authorization Server  . . . . . . . . . . . . . . . . 11
   4. Resource Server to Authorization Server . . . . . . . . . . . . 11
   5. Security Considerations . . . . . . . . . . . . . . . . . . . . 12
   6. Privacy Considerations  . . . . . . . . . . . . . . . . . . . . 12
   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 12
   8.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 12
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 12
     9.1  Normative References  . . . . . . . . . . . . . . . . . . . 12
     9.2  Informative References  . . . . . . . . . . . . . . . . . . 13
   Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 13

 

Seitz, L.                 Expires May 4, 2017                   [Page 2]
INTERNET DRAFT           OSCOAP profile of ACE          October 31, 2016

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 Object
   Security of CoAP (OSCOAP) [I-D.ietf-core-object-security] and
   Ephemeral Diffie-Hellman Over COSE (EDHOC) [I-D.selander-ace-cose-
   ecdhe].  Optionally the client and the resource server may also use
   CoAP and OSCOAP to communicate with the authorization server.  The
   use of EDHOC in this profile in addition to OSCOAP, provides perfect
   forward secrecy (PFS) and the initial proof-of-possession, which ties
   the proof-of-possession key to an OSCOAP security context.

   OSCOAP specifies how to use CBOR Object Signing and Encryption (COSE)
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