The OAuth 2.1 Authorization Framework
draft-ietf-oauth-v2-1-00

Document Type Active Internet-Draft (oauth WG)
Last updated 2020-07-30
Replaces draft-parecki-oauth-v2-1
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OAuth Working Group                                             D. Hardt
Internet-Draft                                                SignIn.Org
Intended status: Standards Track                              A. Parecki
Expires: 31 January 2021                                            Okta
                                                          T. Lodderstedt
                                                                 yes.com
                                                            30 July 2020

                 The OAuth 2.1 Authorization Framework
                        draft-ietf-oauth-v2-1-00

Abstract

   The OAuth 2.1 authorization framework enables a third-party
   application to obtain limited access to an HTTP service, either on
   behalf of a resource owner by orchestrating an approval interaction
   between the resource owner and the HTTP service, or by allowing the
   third-party application to obtain access on its own behalf.  This
   specification replaces and obsoletes the OAuth 2.0 Authorization
   Framework described in RFC 6749.

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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   This Internet-Draft will expire on 31 January 2021.

Copyright Notice

   Copyright (c) 2020 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 (https://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

Hardt, et al.            Expires 31 January 2021                [Page 1]
Internet-Draft    The OAuth 2.1 Authorization Framework        July 2020

   and restrictions with respect to this document.  Code Components
   extracted from this document must include Simplified BSD License text
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   provided without warranty as described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   5
     1.1.  Roles . . . . . . . . . . . . . . . . . . . . . . . . . .   6
     1.2.  Protocol Flow . . . . . . . . . . . . . . . . . . . . . .   7
     1.3.  Authorization Grant . . . . . . . . . . . . . . . . . . .   8
       1.3.1.  Authorization Code  . . . . . . . . . . . . . . . . .   8
       1.3.2.  Client Credentials  . . . . . . . . . . . . . . . . .   8
     1.4.  Access Token  . . . . . . . . . . . . . . . . . . . . . .   9
     1.5.  Refresh Token . . . . . . . . . . . . . . . . . . . . . .   9
     1.6.  TLS Version . . . . . . . . . . . . . . . . . . . . . . .  11
     1.7.  HTTP Redirections . . . . . . . . . . . . . . . . . . . .  11
     1.8.  Interoperability  . . . . . . . . . . . . . . . . . . . .  11
     1.9.  Notational Conventions  . . . . . . . . . . . . . . . . .  12
   2.  Client Registration . . . . . . . . . . . . . . . . . . . . .  12
     2.1.  Client Types  . . . . . . . . . . . . . . . . . . . . . .  13
     2.2.  Client Identifier . . . . . . . . . . . . . . . . . . . .  14
     2.3.  Client Authentication . . . . . . . . . . . . . . . . . .  15
       2.3.1.  Client Password . . . . . . . . . . . . . . . . . . .  15
       2.3.2.  Other Authentication Methods  . . . . . . . . . . . .  16
     2.4.  Unregistered Clients  . . . . . . . . . . . . . . . . . .  17
   3.  Protocol Endpoints  . . . . . . . . . . . . . . . . . . . . .  17
     3.1.  Authorization Endpoint  . . . . . . . . . . . . . . . . .  17
       3.1.1.  Response Type . . . . . . . . . . . . . . . . . . . .  18
       3.1.2.  Redirection Endpoint  . . . . . . . . . . . . . . . .  18
     3.2.  Token Endpoint  . . . . . . . . . . . . . . . . . . . . .  20
       3.2.1.  Client Authentication . . . . . . . . . . . . . . . .  21
     3.3.  Access Token Scope  . . . . . . . . . . . . . . . . . . .  21
   4.  Obtaining Authorization . . . . . . . . . . . . . . . . . . .  22
     4.1.  Authorization Code Grant  . . . . . . . . . . . . . . . .  22
       4.1.1.  Authorization Request . . . . . . . . . . . . . . . .  24
       4.1.2.  Authorization Response  . . . . . . . . . . . . . . .  27
       4.1.3.  Access Token Request  . . . . . . . . . . . . . . . .  30
       4.1.4.  Access Token Response . . . . . . . . . . . . . . . .  31
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