SAML Enhanced Client SASL and GSS-API Mechanisms
draft-ietf-kitten-sasl-saml-ec-00

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Network Working Group                                          S. Cantor
Internet-Draft                                                 Internet2
Intended status: Standards Track                            S. Josefsson
Expires: March 2, 2012                                            SJD AB
                                                         August 30, 2011

            SAML Enhanced Client SASL and GSS-API Mechanisms
                 draft-ietf-kitten-sasl-saml-ec-00.txt

Abstract

   Security Assertion Markup Language (SAML) 2.0 is a generalized
   framework for the exchange of security-related information between
   asserting and relying parties.  Simple Authentication and Security
   Layer (SASL) and the Generic Security Service Application Program
   Interface (GSS-API) are application frameworks to facilitate an
   extensible authentication model.  This document specifies a SASL and
   GSS-API mechanism for SAML 2.0 that leverages the capabilities of a
   SAML-aware "enhanced client" to address significant barriers to
   federated authentication in a manner that encourages reuse of
   existing SAML bindings and profiles designed for non-browser
   scenarios.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on March 2, 2012.

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

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   (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
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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  5
   3.  Applicability for Non-HTTP Use Cases . . . . . . . . . . . . .  6
   4.  SAML SASL Mechanism Specification  . . . . . . . . . . . . . .  9
     4.1.  Advertisement  . . . . . . . . . . . . . . . . . . . . . .  9
     4.2.  Initiation . . . . . . . . . . . . . . . . . . . . . . . .  9
     4.3.  Server Response  . . . . . . . . . . . . . . . . . . . . .  9
     4.4.  User Authentication with Identity Provider . . . . . . . . 10
     4.5.  Client Response  . . . . . . . . . . . . . . . . . . . . . 10
     4.6.  Outcome  . . . . . . . . . . . . . . . . . . . . . . . . . 10
     4.7.  Additional Notes . . . . . . . . . . . . . . . . . . . . . 10
   5.  SAML EC GSS-API Mechanism Specification  . . . . . . . . . . . 11
     5.1.  GSS-API Principal Name Types for SAML EC . . . . . . . . . 11
   6.  Example  . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 20
     7.1.  Risks Left Unaddressed . . . . . . . . . . . . . . . . . . 20
     7.2.  User Privacy . . . . . . . . . . . . . . . . . . . . . . . 20
     7.3.  Collusion between RPs  . . . . . . . . . . . . . . . . . . 21
   8.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 22
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 23
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 23
     9.2.  Normative References for GSS-API Implementers  . . . . . . 24
     9.3.  Informative References . . . . . . . . . . . . . . . . . . 24
   Appendix A.  Acknowledgments . . . . . . . . . . . . . . . . . . . 25
   Appendix B.  Changes . . . . . . . . . . . . . . . . . . . . . . . 26
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 27

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1.  Introduction

   Security Assertion Markup Language (SAML) 2.0
   [OASIS.saml-core-2.0-os] is a modular specification that provides
   various means for a user to be identified to a relying party (RP)
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