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An EAP Authentication Method Based on the Encrypted Key Exchange (EKE) Protocol
RFC 6124

Document type: RFC - Informational (February 2011)
Was draft-sheffer-emu-eap-eke (individual in sec area)
Document stream: IETF
Last updated: 2013-03-02
Other versions: plain text, pdf, html

IETF State: (None)
Consensus: Unknown
Document shepherd: No shepherd assigned

IESG State: RFC 6124 (Informational)
Responsible AD: Russ Housley
Send notices to: gwz@net-zen.net, yaronf.ietf@gmail.com, sfluhrer@cisco.com, Hannes.Tschofenig@gmx.net

Internet Engineering Task Force (IETF)                        Y. Sheffer
Request for Comments: 6124                                   Independent
Category: Informational                                          G. Zorn
ISSN: 2070-1721                                              Network Zen
                                                           H. Tschofenig
                                                  Nokia Siemens Networks
                                                              S. Fluhrer
                                                                   Cisco
                                                           February 2011

                 An EAP Authentication Method Based on
               the Encrypted Key Exchange (EKE) Protocol

Abstract

   The Extensible Authentication Protocol (EAP) describes a framework
   that allows the use of multiple authentication mechanisms.  This
   document defines an authentication mechanism for EAP called EAP-EKE,
   based on the Encrypted Key Exchange (EKE) protocol.  This method
   provides mutual authentication through the use of a short, easy to
   remember password.  Compared with other common authentication
   methods, EAP-EKE is not susceptible to dictionary attacks.  Neither
   does it require the availability of public-key certificates.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6124.

Sheffer, et al.               Informational                     [Page 1]
RFC 6124                   The EAP-EKE Method              February 2011

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
   (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.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Sheffer, et al.               Informational                     [Page 2]
RFC 6124                   The EAP-EKE Method              February 2011

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
     3.1.  Message Flows  . . . . . . . . . . . . . . . . . . . . . .  4
   4.  Message Formats  . . . . . . . . . . . . . . . . . . . . . . .  7
     4.1.  EAP-EKE Header . . . . . . . . . . . . . . . . . . . . . .  7
     4.2.  EAP-EKE Payloads . . . . . . . . . . . . . . . . . . . . .  8
       4.2.1.  The EAP-EKE-ID Payload . . . . . . . . . . . . . . . .  8
       4.2.2.  The EAP-EKE-Commit Payload . . . . . . . . . . . . . . 10
       4.2.3.  The EAP-EKE-Confirm Payload  . . . . . . . . . . . . . 11
       4.2.4.  The EAP-EKE-Failure Payload  . . . . . . . . . . . . . 12
     4.3.  Protected Fields . . . . . . . . . . . . . . . . . . . . . 13
     4.4.  Encrypted Fields . . . . . . . . . . . . . . . . . . . . . 14
     4.5.  Channel Binding Values . . . . . . . . . . . . . . . . . . 14
   5.  Protocol Sequence  . . . . . . . . . . . . . . . . . . . . . . 15

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