A GSS-API Mechanism for the Extensible Authentication Protocol
draft-ietf-abfab-gss-eap-04

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Last updated 2011-10-30 (latest revision 2011-10-19)
Replaces draft-howlett-eap-gss
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Network Working Group                                    S. Hartman, Ed.
Internet-Draft                                         Painless Security
Intended status: Standards Track                              J. Howlett
Expires: May 2, 2012                                           JANET(UK)
                                                        October 30, 2011

     A GSS-API Mechanism for the Extensible Authentication Protocol
                    draft-ietf-abfab-gss-eap-04.txt

Abstract

   This document defines protocols, procedures, and conventions to be
   employed by peers implementing the Generic Security Service
   Application Program Interface (GSS-API) when using the EAP mechanism.
   Through the GS2 family of mechanisms, these protocols also define how
   Simple Authentication and Security Layer (SASL, RFC 4422)
   applications use the Extensible Authentication Protocol.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on May 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
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   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   include Simplified BSD License text as described in Section 4.e of

Hartman & Howlett          Expires May 2, 2012                  [Page 1]
Internet-Draft                 EAP GSS-API                  October 2011

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1.  Discovery  . . . . . . . . . . . . . . . . . . . . . . . .  5
     1.2.  Authentication . . . . . . . . . . . . . . . . . . . . . .  5
     1.3.  Secure Association Protocol  . . . . . . . . . . . . . . .  6
   2.  Requirements notation  . . . . . . . . . . . . . . . . . . . .  8
   3.  EAP Channel Binding and Naming . . . . . . . . . . . . . . . .  9
     3.1.  Mechanism Name Format  . . . . . . . . . . . . . . . . . .  9
     3.2.  Exported Mechanism Names . . . . . . . . . . . . . . . . . 11
     3.3.  Acceptor Name RADIUS AVP . . . . . . . . . . . . . . . . . 12
     3.4.  Proxy Verification of Acceptor Name  . . . . . . . . . . . 13
   4.  Selection of EAP Method  . . . . . . . . . . . . . . . . . . . 15
   5.  Context Tokens . . . . . . . . . . . . . . . . . . . . . . . . 16
     5.1.  Mechanisms and Encryption Types  . . . . . . . . . . . . . 17
     5.2.  Processing received tokens . . . . . . . . . . . . . . . . 17
     5.3.  Error Subtokens  . . . . . . . . . . . . . . . . . . . . . 18
     5.4.  Initial State  . . . . . . . . . . . . . . . . . . . . . . 18
       5.4.1.  Vendor Subtoken  . . . . . . . . . . . . . . . . . . . 18
       5.4.2.  Acceptor Name Request  . . . . . . . . . . . . . . . . 19
       5.4.3.  Acceptor Name Response . . . . . . . . . . . . . . . . 19
     5.5.  Authenticate State . . . . . . . . . . . . . . . . . . . . 20
       5.5.1.  EAP Request Subtoken . . . . . . . . . . . . . . . . . 21
       5.5.2.  EAP Response Subtoken  . . . . . . . . . . . . . . . . 21
     5.6.  Extension State  . . . . . . . . . . . . . . . . . . . . . 21
       5.6.1.  Flags Subtoken . . . . . . . . . . . . . . . . . . . . 21
       5.6.2.  GSS Channel Bindings Subtoken  . . . . . . . . . . . . 22
       5.6.3.  MIC Subtoken . . . . . . . . . . . . . . . . . . . . . 22
     5.7.  Example Token  . . . . . . . . . . . . . . . . . . . . . . 24
     5.8.  Context Options  . . . . . . . . . . . . . . . . . . . . . 24
   6.  Acceptor Services  . . . . . . . . . . . . . . . . . . . . . . 26
     6.1.  GSS-API Channel Binding  . . . . . . . . . . . . . . . . . 26
     6.2.  Per-message security . . . . . . . . . . . . . . . . . . . 26
     6.3.  Pseudo Random Function . . . . . . . . . . . . . . . . . . 26
   7.  Applicability Considerations . . . . . . . . . . . . . . . . . 27
   8.  Iana Considerations  . . . . . . . . . . . . . . . . . . . . . 28
     8.1.  RFC 4121 Token Identifiers . . . . . . . . . . . . . . . . 28
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