Pub-Sub Profile for Authentication and Authorization for Constrained Environments (ACE)
draft-ietf-ace-pubsub-profile-01
ACE Working Group F. Palombini
Internet-Draft Ericsson
Intended status: Standards Track July 03, 2020
Expires: January 4, 2021
Pub-Sub Profile for Authentication and Authorization for Constrained
Environments (ACE)
draft-ietf-ace-pubsub-profile-01
Abstract
This specification defines an application profile for authentication
and authorization for publishers and subscribers in a pub-sub setting
scenario in a constrained environment, using the ACE framework. This
profile relies on transport layer or application layer security to
authorize the publisher to the broker. Moreover, it relies on
application layer security for publisher-broker and subscriber-broker
communication.
Status of This Memo
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This Internet-Draft will expire on January 4, 2021.
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Palombini Expires January 4, 2021 [Page 1]
Internet-Draft pubsub-profile July 2020
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
2. Application Profile Overview . . . . . . . . . . . . . . . . 3
3. PubSub Application Profiles . . . . . . . . . . . . . . . . . 5
3.1. Retrieval of COSE Key for protection of content . . . . . 6
3.2. coap_pubsub_app Application Profile . . . . . . . . . . . 9
3.3. mqtt_pubsub_app Application Profile . . . . . . . . . . . 9
4. Publisher . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1. CoAP Publisher . . . . . . . . . . . . . . . . . . . . . 11
4.2. MQTT Publisher . . . . . . . . . . . . . . . . . . . . . 12
5. Subscriber . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1. CoAP Subscriber . . . . . . . . . . . . . . . . . . . . . 13
5.2. MQTT Subscriber . . . . . . . . . . . . . . . . . . . . . 13
6. Pub-Sub Protected Communication . . . . . . . . . . . . . . . 13
6.1. Using COSE Objects To Protect The Resource Representation 14
7. Security Considerations . . . . . . . . . . . . . . . . . . . 16
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 17
8.1. ACE Groupcomm Profile Registry . . . . . . . . . . . . . 17
8.1.1. CoAP Profile Registration . . . . . . . . . . . . . . 17
8.1.2. CoAP Profile Registration . . . . . . . . . . . . . . 17
8.2. ACE Groupcomm Key Registry . . . . . . . . . . . . . . . 18
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 18
9.1. Normative References . . . . . . . . . . . . . . . . . . 18
9.2. Informative References . . . . . . . . . . . . . . . . . 19
Appendix A. Requirements on Application Profiles . . . . . . . . 19
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 21
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 21
1. Introduction
The publisher-subscriber setting allows for devices with limited
reachability to communicate via a broker that enables store-and-
forward messaging between the devices. The pub-sub scenario using
the Constrained Application Protocol (CoAP) is specified in
[I-D.ietf-core-coap-pubsub], while the one using MQTT is specified in
REF MQTT. This document defines a way to authorize nodes in a CoAP
pub-sub type of setting, using the ACE framework
[I-D.ietf-ace-oauth-authz], and to provide the keys for protecting
the communication between these nodes. This document gives detailed
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