OAuth 2.0 JWT Authorization Request
draft-ietf-oauth-jwsreq-05

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OAuth Working Group                                     N. Sakimura, Ed.
Internet-Draft                                 Nomura Research Institute
Intended status: Standards Track                              J. Bradley
Expires: January 23, 2016                                  Ping Identity
                                                           July 22, 2015

                  OAuth 2.0 JWT Authorization Request
                       draft-ietf-oauth-jwsreq-05

Abstract

   The authorization request in OAuth 2.0 utilizes query parameter
   serialization.  This specification defines the authorization request
   using JWT serialization.  The request is sent through "request"
   parameter or by reference through "request_uri" parameter that points
   to the JWT, allowing the request to be optionally signed and
   encrypted.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on January 23, 2016.

Copyright Notice

   Copyright (c) 2015 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
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   publication of this document.  Please review these documents
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   include Simplified BSD License text as described in Section 4.e of

Sakimura & Bradley      Expires January 23, 2016                [Page 1]
Internet-Draft                  oauth-jar                      July 2015

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

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   4
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  Request Object  . . . . . . . . . . . . . . . . . . . . .   4
     2.2.  Request Object URI  . . . . . . . . . . . . . . . . . . .   4
   3.  Request Object  . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Authorization Request . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Passing a Request Object by Value . . . . . . . . . . . .   7
     4.2.  Passing a Request Object by Reference . . . . . . . . . .   8
       4.2.1.  URL Referencing the Request Object  . . . . . . . . .  10
       4.2.2.  Request using the "request_uri" Request Parameter . .  10
       4.2.3.  Authorization Server Fetches Request Object . . . . .  10
   5.  Validating JWT-Based Requests . . . . . . . . . . . . . . . .  11
     5.1.  Encrypted Request Object  . . . . . . . . . . . . . . . .  11
     5.2.  Signed Request Object . . . . . . . . . . . . . . . . . .  11
     5.3.  Request Parameter Assembly and Validation . . . . . . . .  11
   6.  Authorization Server Response . . . . . . . . . . . . . . . .  11
   7.  IANA  Considerations  . . . . . . . . . . . . . . . . . . . .  12
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  12
   10. Revision History  . . . . . . . . . . . . . . . . . . . . . .  13
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     11.2.  Informative References . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   The parameters "request" and "request_uri" are introduced as
   additional authorization request parameters for the OAuth 2.0
   [RFC6749] flows.  The "request" parameter is a JSON Web Token (JWT)
   [RFC7519] whose JWT Claims Set holds the JSON encoded OAuth 2.0
   authorization request parameters.  The JWT [RFC7519] can be passed to
   the authorization endpoint by reference, in which case the parameter
   "request_uri" is used instead of the "request".

   Using JWT [RFC7519] as the request encoding instead of query
   parameters has several advantages:

   1.  The request can be signed so that an integrity check can be
       implemented.  If a suitable algorithm is used for the signing,
       then it will provide a good evidence of the approver.