EAP Re-authentication Protocol Extensions for Authenticated Anticipatory Keying (ERP/AAK)
draft-ietf-hokey-erp-aak-10

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Network Working Group                                             Z. Cao
Internet-Draft                                                   H. Deng
Intended status: Standards Track                            China Mobile
Expires: August 20, 2012                                           Q. Wu
                                                                  Huawei
                                                            G. Zorn, Ed.
                                                             Network Zen
                                                       February 17, 2012

EAP Re-authentication Protocol Extensions for Authenticated Anticipatory
                            Keying (ERP/AAK)
                      draft-ietf-hokey-erp-aak-10

Abstract

   The Extensible Authentication Protocol (EAP) is a generic framework
   supporting multiple types of authentication methods.

   The EAP Re-authentication Protocol (ERP) specifies extensions to EAP
   and the EAP keying hierarchy to support an EAP method-independent
   protocol for efficient re-authentication between the peer and an EAP
   re-authentication server through any authenticator.

   Authenticated Anticipatory Keying (AAK) is a method by which
   cryptographic keying material may be established upon one or more
   candidate attachment points (CAPs) prior to handover.  AAK uses the
   AAA infrastructure for key transport.

   This document specifies the extensions necessary to enable AAK
   support in ERP.

Status of This Memo

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

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on August 20, 2012.

Cao, et al.              Expires August 20, 2012                [Page 1]
Internet-Draft                   ERP/AAK                   February 2012

Copyright Notice

   Copyright (c) 2012 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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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  3
     2.1.  Standards Language . . . . . . . . . . . . . . . . . . . .  3
     2.2.  Acronyms . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  ERP/AAK Description  . . . . . . . . . . . . . . . . . . . . .  4
   4.  ERP/AAK Key Hierarchy  . . . . . . . . . . . . . . . . . . . .  7
     4.1.  Derivation of the pRK and pMSK . . . . . . . . . . . . . .  8
   5.  Packet and TLV Extension . . . . . . . . . . . . . . . . . . .  9
     5.1.  EAP-Initiate/Re-auth-Start Packet and TLV Extension  . . .  9
     5.2.  EAP-Initiate/Re-auth Packet and TLV Extension  . . . . . . 10
     5.3.  EAP-Finish/Re-auth packet and TLV extension  . . . . . . . 12
     5.4.  TV and TLV Attributes  . . . . . . . . . . . . . . . . . . 14
   6.  Lower Layer Considerations . . . . . . . . . . . . . . . . . . 15
   7.  AAA Transport Considerations . . . . . . . . . . . . . . . . . 15
   8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 15
   9.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 16
   10. Acknowledgement  . . . . . . . . . . . . . . . . . . . . . . . 18
   11. References . . . . . . . . . . . . . . . . . . . . . . . . . . 18
     11.1. Normative References . . . . . . . . . . . . . . . . . . . 18
     11.2. Informative References . . . . . . . . . . . . . . . . . . 18

Cao, et al.              Expires August 20, 2012                [Page 2]
Internet-Draft                   ERP/AAK                   February 2012

1.  Introduction

   The Extensible Authentication Protocol (EAP) [RFC3748] is a generic
   framework supporting multiple types of authentication methods.  In
   systems where EAP is used for authentication, it is desirable to not
   repeat the entire EAP exchange with another authenticator.  The EAP