Group OSCORE Profile of the Authentication and Authorization for Constrained Environments Framework
draft-tiloca-ace-group-oscore-profile-02

Document Type Active Internet-Draft (individual)
Last updated 2020-03-09
Stream (None)
Intended RFC status (None)
Formats plain text pdf htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
ACE Working Group                                              M. Tiloca
Internet-Draft                                               R. Hoeglund
Intended status: Standards Track                                 RISE AB
Expires: September 10, 2020                                     L. Seitz
                                                               Combitech
                                                            F. Palombini
                                                             Ericsson AB
                                                          March 09, 2020

    Group OSCORE Profile of the Authentication and Authorization for
                   Constrained Environments Framework
                draft-tiloca-ace-group-oscore-profile-02

Abstract

   This document specifies a profile for the Authentication and
   Authorization for Constrained Environments (ACE) framework.  The
   profile uses Group OSCORE to provide communication security between a
   Client and a (set of) Resource Server(s) as members of an OSCORE
   Group.  The profile securely binds an OAuth 2.0 Access Token with the
   public key of the Client associated to the signing private key used
   in the OSCORE group.  The profile uses Group OSCORE to achieve server
   authentication, as well as proof-of-possession for the Client public
   key.  Also, it provides proof of Client's membership to the correct
   OSCORE group, by binding the Access Token to information from the
   Group OSCORE Security Context, thus allowing the Resource Server(s)
   to verify the Client's membership upon receiving a message protected
   with Group OSCORE from the Client.

Status of This Memo

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

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on September 10, 2020.

Tiloca, et al.         Expires September 10, 2020               [Page 1]
Internet-Draft         Group OSCORE Profile of ACE            March 2020

Copyright Notice

   Copyright (c) 2020 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
   (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
   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 . . . . . . . . . . . . . . . . . . . . . . .   6
   2.  Protocol Overview . . . . . . . . . . . . . . . . . . . . . .   6
     2.1.  Pre-Conditions  . . . . . . . . . . . . . . . . . . . . .   8
     2.2.  Access Token Retrieval  . . . . . . . . . . . . . . . . .   8
     2.3.  Access Token Posting  . . . . . . . . . . . . . . . . . .   9
     2.4.  Secure Communication  . . . . . . . . . . . . . . . . . .   9
   3.  Client-AS Communication . . . . . . . . . . . . . . . . . . .  10
     3.1.  C-to-AS: POST to Token Endpoint . . . . . . . . . . . . .  10
       3.1.1.  'context_id' Parameter  . . . . . . . . . . . . . . .  12
       3.1.2.  'salt_input' Parameter  . . . . . . . . . . . . . . .  12
       3.1.3.  'client_cred_verify' Parameter  . . . . . . . . . . .  12
     3.2.  AS-to-C: Access Token . . . . . . . . . . . . . . . . . .  13
       3.2.1.  Salt Input Claim  . . . . . . . . . . . . . . . . . .  16
       3.2.2.  Context ID Input Claim  . . . . . . . . . . . . . . .  16
   4.  Client-RS Communication . . . . . . . . . . . . . . . . . . .  16
     4.1.  C-to-RS POST to authz-info Endpoint . . . . . . . . . . .  17
     4.2.  RS-to-C: 2.01 (Created) . . . . . . . . . . . . . . . . .  17
     4.3.  Client-RS Secure Communication  . . . . . . . . . . . . .  18
       4.3.1.  Client Side . . . . . . . . . . . . . . . . . . . . .  18
       4.3.2.  Resource Server Side  . . . . . . . . . . . . . . . .  18
     4.4.  Access Rights Verification  . . . . . . . . . . . . . . .  19
   5.  Secure Communication with the AS  . . . . . . . . . . . . . .  19
   6.  Discarding the Security Context . . . . . . . . . . . . . . .  19
Show full document text