Authentication Context Certificate Extension
draft-santesson-auth-context-extension-06

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Document Type Active Internet-Draft (individual)
Author Stefan Santesson 
Last updated 2014-05-05
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INTERNET-DRAFT                                          Stefan Santesson
Intended Status: Informational                            (3xA Security)
Expires: November 6, 2014                                    May 5, 2014

              Authentication Context Certificate Extension
               draft-santesson-auth-context-extension-06

Abstract

   This document defines an extension to certificates according to
   [RFC5280]. The extension defined in this document holds data about
   how the certificate subject was authenticated by the Certification
   Authority who issued the certificate where this extension appears. 

   This document also defines one data structure for inclusion in this
   extension that designed to hold information when the subject is
   authenticated using a SAML assertion [SAML].

Status of this Memo

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

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Copyright and License 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
 

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   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  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1  Terminology . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.2  Deployment  . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  Authentication Context Extension Syntax  . . . . . . . . . . .  5
   3  SAML Authentication Context Information . . . . . . . . . . . .  6
     3.1  contextInfo Data Structure  . . . . . . . . . . . . . . . .  6
       3.1.1   AuthContextInfo Element  . . . . . . . . . . . . . . .  6
       3.1.2  IdAttributes Element  . . . . . . . . . . . . . . . . .  8
   4  Security Considerations . . . . . . . . . . . . . . . . . . . . 10
   5  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 10
   6  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 10
     6.1  Normative References  . . . . . . . . . . . . . . . . . . . 10
     6.2  Informative References  . . . . . . . . . . . . . . . . . . 11
   Appendix A - ASN.1 modules . . . . . . . . . . . . . . . . . . . . 11
     A.1  ASN.1 1988 Syntax . . . . . . . . . . . . . . . . . . . . . 11
     A.2  ASN.1 2008 Syntax . . . . . . . . . . . . . . . . . . . . . 12
   Appendix B - SAML Authentication Context Info XML Schema . . . . . 13
     B.1  XML Schema  . . . . . . . . . . . . . . . . . . . . . . . . 13
   Appendix C - SAML Authentication Context Info XML Examples . . . . 15
     C.1  Complete context information and mappings . . . . . . . . . 15
     C.2  Only mapping information without SAML attribute values  . . 16
     C.3  Authentication context and serialNmber mapping  . . . . . . 17
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 18

 

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1  Introduction

   The primary purpose of this document is to provide a mechanism that
   allows an application to understand information that express the
   identity of a subject in a certificate that is stored either in a
   subject field attribute, as a subject alternative name or in a
   subject directory attribute.

   This addresses some needs that may arise when issuing a certificate
   from an existing non-certificate based identity infrastructure where
   the certificate subject already has an authenticated identity
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