A GSS-API Mechanism for the Extensible Authentication Protocol
draft-ietf-abfab-gss-eap-09

Network Working Group                                    S. Hartman, Ed.
Internet-Draft                                         Painless Security
Intended status: Standards Track                              J. Howlett
Expires: February 14, 2013                                         JANET
                                                         August 13, 2012

     A GSS-API Mechanism for the Extensible Authentication Protocol
                    draft-ietf-abfab-gss-eap-09.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 Extensible
   Authentication Protocol mechanism.  Through the GS2 family of
   mechanisms defined in RFC 5801, these protocols also define how
   Simple Authentication and Security Layer (SASL, RFC 4422)
   applications use the Extensible Authentication Protocol.

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Hartman & Howlett       Expires February 14, 2013               [Page 1]
Internet-Draft                 EAP GSS-API                   August 2012

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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.  Internationalization of Names  . . . . . . . . . . . . . . 12
     3.3.  Exported Mechanism Names . . . . . . . . . . . . . . . . . 12
     3.4.  Acceptor Name RADIUS AVP . . . . . . . . . . . . . . . . . 13
     3.5.  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  . . . . . . . . . . . . . . . . . . . 19
       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 . . . . . . . . . . . . . . . . . . . . 22
       5.6.2.  GSS Channel Bindings Subtoken  . . . . . . . . . . . . 22
       5.6.3.  MIC Subtoken . . . . . . . . . . . . . . . . . . . . . 23
     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 . . . . . . . . . . . . . . . . . . . 27