Authentication and Authorization for Constrained Environments (ACE) using the OAuth 2.0 Framework (ACE-OAuth)
draft-ietf-ace-oauth-authz-35
ACE Working Group L. Seitz
Internet-Draft Combitech
Intended status: Standards Track G. Selander
Expires: December 26, 2020 Ericsson
E. Wahlstroem
S. Erdtman
Spotify AB
H. Tschofenig
Arm Ltd.
June 24, 2020
Authentication and Authorization for Constrained Environments (ACE)
using the OAuth 2.0 Framework (ACE-OAuth)
draft-ietf-ace-oauth-authz-35
Abstract
This specification defines a framework for authentication and
authorization in Internet of Things (IoT) environments called ACE-
OAuth. The framework is based on a set of building blocks including
OAuth 2.0 and the Constrained Application Protocol (CoAP), thus
transforming a well-known and widely used authorization solution into
a form suitable for IoT devices. Existing specifications are used
where possible, but extensions are added and profiles are defined to
better serve the IoT use cases.
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
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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 December 26, 2020.
Seitz, et al. Expires December 26, 2020 [Page 1]
Internet-Draft ACE-OAuth June 2020
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1. OAuth 2.0 . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2. CoAP . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4. Protocol Interactions . . . . . . . . . . . . . . . . . . . . 11
5. Framework . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1. Discovering Authorization Servers . . . . . . . . . . . . 16
5.1.1. Unauthorized Resource Request Message . . . . . . . . 16
5.1.2. AS Request Creation Hints . . . . . . . . . . . . . . 17
5.1.2.1. The Client-Nonce Parameter . . . . . . . . . . . 19
5.2. Authorization Grants . . . . . . . . . . . . . . . . . . 20
5.3. Client Credentials . . . . . . . . . . . . . . . . . . . 20
5.4. AS Authentication . . . . . . . . . . . . . . . . . . . . 21
5.5. The Authorization Endpoint . . . . . . . . . . . . . . . 21
5.6. The Token Endpoint . . . . . . . . . . . . . . . . . . . 21
5.6.1. Client-to-AS Request . . . . . . . . . . . . . . . . 22
5.6.2. AS-to-Client Response . . . . . . . . . . . . . . . . 25
5.6.3. Error Response . . . . . . . . . . . . . . . . . . . 27
5.6.4. Request and Response Parameters . . . . . . . . . . . 28
5.6.4.1. Grant Type . . . . . . . . . . . . . . . . . . . 28
5.6.4.2. Token Type . . . . . . . . . . . . . . . . . . . 29
5.6.4.3. Profile . . . . . . . . . . . . . . . . . . . . . 29
5.6.4.4. Client-Nonce . . . . . . . . . . . . . . . . . . 30
5.6.5. Mapping Parameters to CBOR . . . . . . . . . . . . . 30
5.7. The Introspection Endpoint . . . . . . . . . . . . . . . 31
5.7.1. Introspection Request . . . . . . . . . . . . . . . . 32
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