OAuth 2.0 Assertion Profile
draft-ietf-oauth-assertions-01

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Document Type Active Internet-Draft (oauth WG)
Last updated 2011-10-31 (latest revision 2011-07-04)
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C. Mortimore, Ed.
Internet-Draft                                                Salesforce
Intended status: Standards Track                                M. Jones
Expires: May 3, 2012                                           Microsoft
                                                             B. Campbell
                                                                    Ping
                                                               Y. Goland
                                                               Microsoft
                                                        October 31, 2011

                      OAuth 2.0 Assertion Profile
                     draft-ietf-oauth-assertions-01

Abstract

   This specification provides a general framework for the use of
   assertions as client credentials and/or authorization grants with
   OAuth 2.0.  It includes a generic mechanism for transporting
   assertions during interactions with a token endpoint, as wells as
   rules for the content and processing of those assertions.  The intent
   is to provide an enhanced security profile by using derived values
   such as signatures or HMACs, as well as facilitate the use of OAuth
   2.0 in client-server integration scenarios where the end-user may not
   be present.

   This specification only defines abstract message flow and assertion
   content.  Actual use requires implementation of a companion protocol
   binding specification.  Additional profile documents provide standard
   representations in formats such as SAML and JWT.

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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   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   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 May 3, 2012.

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Copyright Notice

   Copyright (c) 2011 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
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Requirements Notation and Conventions  . . . . . . . . . . . .  3
   2.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Authentication vs. Authorization . . . . . . . . . . . . . . .  4
   4.  Transporting Assertions  . . . . . . . . . . . . . . . . . . .  4
     4.1.  Using Assertions for Client Authentication . . . . . . . .  4
     4.2.  Using Assertions as Authorization Grants . . . . . . . . .  5
   5.  Assertion Content and Processing . . . . . . . . . . . . . . .  6
     5.1.  Assertion Metamodel  . . . . . . . . . . . . . . . . . . .  7
     5.2.  General Assertion Format and Processing Rules  . . . . . .  8
   6.  Specific Assertion Format and Processing Rules . . . . . . . .  8
     6.1.  Client authentication  . . . . . . . . . . . . . . . . . .  9
     6.2.  Client acting on behalf of itself  . . . . . . . . . . . .  9
     6.3.  Client acting on behalf of a user  . . . . . . . . . . . . 11
     6.4.  Client acting on behalf of an anonymous user . . . . . . . 12
   7.  Error Responses  . . . . . . . . . . . . . . . . . . . . . . . 13
   8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 13
   9.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 14
     9.1.  Parameter Registration Request . . . . . . . . . . . . . . 14
     9.2.  Parameter Registration Request . . . . . . . . . . . . . . 14
     9.3.  Parameter Registration Request . . . . . . . . . . . . . . 15
   10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 15
   11. Normative References . . . . . . . . . . . . . . . . . . . . . 15
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 15

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