Key Provisioning for Group Communication using ACE
draft-palombini-ace-key-groupcomm-02

Document Type Active Internet-Draft (individual)
Last updated 2018-10-22
Stream (None)
Intended RFC status (None)
Formats plain text xml pdf html 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                                           F. Palombini
Internet-Draft                                               Ericsson AB
Intended status: Standards Track                               M. Tiloca
Expires: April 25, 2019                                          RISE AB
                                                        October 22, 2018

           Key Provisioning for Group Communication using ACE
                  draft-palombini-ace-key-groupcomm-02

Abstract

   This document defines message formats and procedures for requesting
   and distributing group keying material using the ACE framework, to
   protect communications between group members.

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 April 25, 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
   (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.

Palombini & Tiloca       Expires April 25, 2019                 [Page 1]
Internet-Draft  Key Provisioning for Group Communication    October 2018

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Authorization to Join a Group . . . . . . . . . . . . . . . .   5
     3.1.  Authorization Request . . . . . . . . . . . . . . . . . .   6
     3.2.  Authorization Response  . . . . . . . . . . . . . . . . .   7
     3.3.  Token Post  . . . . . . . . . . . . . . . . . . . . . . .   8
   4.  Key Distribution  . . . . . . . . . . . . . . . . . . . . . .   8
     4.1.  Key Distribution Request  . . . . . . . . . . . . . . . .   9
     4.2.  Key Distribution Response . . . . . . . . . . . . . . . .  10
   5.  Removal of a Node from the Group  . . . . . . . . . . . . . .  12
     5.1.  Expired Authorization . . . . . . . . . . . . . . . . . .  12
     5.2.  Request to Leave the Group  . . . . . . . . . . . . . . .  12
   6.  Retrieval of Updated Keying Material  . . . . . . . . . . . .  13
     6.1.  Key Re-Distribution Request . . . . . . . . . . . . . . .  13
     6.2.  Key Re-Distribution Response  . . . . . . . . . . . . . .  13
   7.  Retrieval of Public Keys for Group Members  . . . . . . . . .  13
     7.1.  Public Key Request  . . . . . . . . . . . . . . . . . . .  14
     7.2.  Public Key Response . . . . . . . . . . . . . . . . . . .  14
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  15
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  15
     10.2.  Informative References . . . . . . . . . . . . . . . . .  16
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .  17
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  17

1.  Introduction

   This document expands the ACE framework [I-D.ietf-ace-oauth-authz] to
   define the format of messages used to request, distribute and renew
   the keying material in a group communication scenario, e.g. based on
   multicast [RFC7390] or on publishing-subscribing
   [I-D.ietf-core-coap-pubsub].

   Profiles that use group communication can build on this document to
   specify the selection of the message parameters defined in this
   document to use and their values.  Known applications that can
   benefit from this document would be, for example, profiles addressing
   group communication based on multicast [RFC7390] or publishing/
   subscribing [I-D.ietf-core-coap-pubsub] in ACE.

   If the application requires backward and forward security, updated
   keying material is generated and distributed to the group members
Show full document text