OAuth 2.0 Discovery
draft-ietf-oauth-discovery-00

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Last updated 2016-02-09
Replaces draft-jones-oauth-discovery
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OAuth Working Group                                             M. Jones
Internet-Draft                                                 Microsoft
Intended status: Standards Track                             N. Sakimura
Expires: August 11, 2016                                             NRI
                                                              J. Bradley
                                                           Ping Identity
                                                        February 8, 2016

                          OAuth 2.0 Discovery
                     draft-ietf-oauth-discovery-00

Abstract

   This specification defines a mechanism for an OAuth 2.0 client to
   discover the resource owner's OAuth 2.0 authorization server and
   obtain information needed to interact with it, including its OAuth
   2.0 endpoint locations and authorization server capabilities.

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
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   Internet-Drafts are draft documents valid for a maximum of six months
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   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 August 11, 2016.

Copyright Notice

   Copyright (c) 2016 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
   (http://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

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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Requirements Notation and Conventions  . . . . . . . . . .  3
     1.2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Authorization Server WebFinger Discovery . . . . . . . . . . .  4
   3.  Authorization Server Metadata  . . . . . . . . . . . . . . . .  6
   4.  Obtaining Authorization Server Configuration Information . . . 10
     4.1.  Authorization Server Configuration Information Request . . 10
     4.2.  Authorization Server Configuration Information Response  . 11
     4.3.  Authorization Server Configuration Information
           Validation . . . . . . . . . . . . . . . . . . . . . . . . 12
   5.  String Operations  . . . . . . . . . . . . . . . . . . . . . . 12
   6.  Compatibility Notes  . . . . . . . . . . . . . . . . . . . . . 13
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 13
     7.1.  TLS Requirements . . . . . . . . . . . . . . . . . . . . . 13
     7.2.  Impersonation Attacks  . . . . . . . . . . . . . . . . . . 14
   8.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 14
     8.1.  OAuth Discovery Metadata Registry  . . . . . . . . . . . . 15
       8.1.1.  Registration Template  . . . . . . . . . . . . . . . . 15
       8.1.2.  Initial Registry Contents  . . . . . . . . . . . . . . 16
     8.2.  Updated Registration Instructions  . . . . . . . . . . . . 19
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 19
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 19
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 22
   Appendix A.  Acknowledgements  . . . . . . . . . . . . . . . . . . 22
   Appendix B.  Document History  . . . . . . . . . . . . . . . . . . 22
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 23

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1.  Introduction

   This specification generalizes the discovery mechanisms defined by
   "OpenID Connect Discovery 1.0" [OpenID.Discovery] in a way that is
   compatible with OpenID Connect Discovery, while being applicable to a
   wider set of OAuth 2.0 use cases.  This is intentionally parallel to
   the way that the "OAuth 2.0 Dynamic Client Registration Protocol"
   [RFC7591] specification generalized the dynamic client registration
   mechanisms defined by "OpenID Connect Dynamic Client Registration
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