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SAML 2.0 Profile for OAuth 2.0 Client Authentication and Authorization Grants
draft-ietf-oauth-saml2-bearer-22

Document type: Active Internet-Draft (oauth WG)
Document stream: IETF
Last updated: 2014-10-21
Intended RFC status: Proposed Standard
Other versions: plain text, pdf, xml, html

IETF State: Submitted to IESG for Publication Apr 2013
Consensus: Yes
Document shepherd: Hannes Tschofenig
Shepherd Write-Up: Last changed 2014-05-08

IESG State: IESG Evaluation::AD Followup
IANA Action State: None
(Has a DISCUSS. Has enough positions to pass once DISCUSS positions are resolved.)
Responsible AD: Kathleen Moriarty
Send notices to: oauth-chairs@tools.ietf.org, draft-ietf-oauth-saml2-bearer@tools.ietf.org, oauth@ietf.org

OAuth Working Group                                          B. Campbell
Internet-Draft                                             Ping Identity
Intended status: Standards Track                            C. Mortimore
Expires: April 24, 2015                                       Salesforce
                                                                M. Jones
                                                               Microsoft
                                                        October 21, 2014

 SAML 2.0 Profile for OAuth 2.0 Client Authentication and Authorization
                                 Grants
                    draft-ietf-oauth-saml2-bearer-22

Abstract

   This specification defines the use of a Security Assertion Markup
   Language (SAML) 2.0 Bearer Assertion as a means for requesting an
   OAuth 2.0 access token as well as for use as a means of client
   authentication.

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
   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 April 24, 2015.

Copyright Notice

   Copyright (c) 2014 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

Campbell, et al.         Expires April 24, 2015                 [Page 1]
Internet-Draft        OAuth SAML Assertion Profiles         October 2014

   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.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Notational Conventions  . . . . . . . . . . . . . . . . .   4
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  HTTP Parameter Bindings for Transporting Assertions . . . . .   4
     2.1.  Using SAML Assertions as Authorization Grants . . . . . .   4
     2.2.  Using SAML Assertions for Client Authentication . . . . .   5
   3.  Assertion Format and Processing Requirements  . . . . . . . .   6
     3.1.  Authorization Grant Processing  . . . . . . . . . . . . .   8
     3.2.  Client Authentication Processing  . . . . . . . . . . . .   9
   4.  Authorization Grant Example . . . . . . . . . . . . . . . . .   9
   5.  Interoperability Considerations . . . . . . . . . . . . . . .  11
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   7.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  12
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
     8.1.  Sub-Namespace Registration of urn:ietf:params:oauth
           :grant-type:saml2-bearer  . . . . . . . . . . . . . . . .  12
     8.2.  Sub-Namespace Registration of urn:ietf:params:oauth
           :client-assertion-type:saml2-bearer . . . . . . . . . . .  12
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  13
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  14
   Appendix A.  Acknowledgements . . . . . . . . . . . . . . . . . .  14
   Appendix B.  Document History . . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  21

1.  Introduction

   The Security Assertion Markup Language (SAML) 2.0
   [OASIS.saml-core-2.0-os] is an XML-based framework that allows
   identity and security information to be shared across security
   domains.  The SAML specification, while primarily targeted at
   providing cross domain Web browser single sign-on, was also designed
   to be modular and extensible to facilitate use in other contexts.

   The Assertion, an XML security token, is a fundamental construct of
   SAML that is often adopted for use in other protocols and
   specifications.  (Some examples include [OASIS.WSS-SAMLTokenProfile]

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