OAuth 2.0 Pushed Authorization Requests
draft-ietf-oauth-par-06
Web Authorization Protocol T. Lodderstedt
Internet-Draft yes.com
Intended status: Standards Track B. Campbell
Expires: 6 August 2021 Ping Identity
N. Sakimura
NAT.Consulting
D. Tonge
Moneyhub Financial Technology
F. Skokan
Auth0
2 February 2021
OAuth 2.0 Pushed Authorization Requests
draft-ietf-oauth-par-06
Abstract
This document defines the pushed authorization request endpoint,
which allows clients to push the payload of an OAuth 2.0
authorization request to the authorization server via a direct
request and provides them with a request URI that is used as
reference to the data in a subsequent call to the authorization
endpoint.
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This Internet-Draft will expire on 6 August 2021.
Copyright Notice
Copyright (c) 2021 IETF Trust and the persons identified as the
document authors. All rights reserved.
Lodderstedt, et al. Expires 6 August 2021 [Page 1]
Internet-Draft OAuth PAR February 2021
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Introductory Example . . . . . . . . . . . . . . . . . . 4
1.2. Conventions and Terminology . . . . . . . . . . . . . . . 5
2. Pushed Authorization Request Endpoint . . . . . . . . . . . . 5
2.1. Request . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2. Successful Response . . . . . . . . . . . . . . . . . . . 8
2.3. Error Response . . . . . . . . . . . . . . . . . . . . . 9
2.4. Management of Client Redirect URIs . . . . . . . . . . . 10
3. The "request" Request Parameter . . . . . . . . . . . . . . . 11
4. Authorization Request . . . . . . . . . . . . . . . . . . . . 13
5. Authorization Server Metadata . . . . . . . . . . . . . . . . 14
6. Client Metadata . . . . . . . . . . . . . . . . . . . . . . . 15
7. Security Considerations . . . . . . . . . . . . . . . . . . . 15
7.1. Request URI Guessing . . . . . . . . . . . . . . . . . . 15
7.2. Open Redirection . . . . . . . . . . . . . . . . . . . . 15
7.3. Request Object Replay . . . . . . . . . . . . . . . . . . 16
7.4. Client Policy Change . . . . . . . . . . . . . . . . . . 16
7.5. Request URI Swapping . . . . . . . . . . . . . . . . . . 16
8. Privacy Considerations . . . . . . . . . . . . . . . . . . . 16
9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 16
10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 17
10.1. OAuth Authorization Server Metadata . . . . . . . . . . 17
10.2. OAuth Dynamic Client Registration Metadata . . . . . . . 17
10.3. OAuth URI Registration . . . . . . . . . . . . . . . . . 17
11. Normative References . . . . . . . . . . . . . . . . . . . . 18
12. Informative References . . . . . . . . . . . . . . . . . . . 18
Appendix A. Document History . . . . . . . . . . . . . . . . . . 20
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 22
1. Introduction
Pushed authorization requests (PAR), defined by this document, enable
OAuth [RFC6749] clients to push the payload of an authorization
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