Network Working Group Q. Wu, Ed.
Internet-Draft Huawei
Obsoletes: 5296 (if approved) Z. Cao
Intended status: Standards Track China Mobile
Expires: May 18, 2012 G. Zorn, Ed.
Network Zen
Y. Shi
H3C
B. He
CATR
November 15, 2011
EAP Extensions for EAP Re-authentication Protocol (ERP)
draft-ietf-hokey-rfc5296bis-06
Abstract
The Extensible Authentication Protocol (EAP) is a generic framework
supporting multiple types of authentication methods. In systems
where EAP is used for authentication, it is desirable to avoid
repeating the entire EAP exchange with another authenticator. This
document 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. The re-authentication server may be in
the home network or in the local network to which the peer is
connecting.
This memo obsoletes RFC 5296.
Status of this Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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Internet-Drafts are draft documents valid for a maximum of six months
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on May 18, 2012.
Wu, et al. Expires May 18, 2012 [Page 1]
Internet-Draft ERP November 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
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described in the Simplified BSD License.
Wu, et al. Expires May 18, 2012 [Page 2]
Internet-Draft ERP November 2011
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. ERP Description . . . . . . . . . . . . . . . . . . . . . . . 6
3.1. ERP With the Home ER Server . . . . . . . . . . . . . . . 9
3.2. ERP with a Local ER Server . . . . . . . . . . . . . . . . 10
4. ER Key Hierarchy . . . . . . . . . . . . . . . . . . . . . . . 12
4.1. rRK Derivation . . . . . . . . . . . . . . . . . . . . . . 13
4.2. rRK Properties . . . . . . . . . . . . . . . . . . . . . . 14
4.3. rIK Derivation . . . . . . . . . . . . . . . . . . . . . . 14
4.4. rIK Properties . . . . . . . . . . . . . . . . . . . . . . 15
4.5. rIK Usage . . . . . . . . . . . . . . . . . . . . . . . . 15
4.6. rMSK Derivation . . . . . . . . . . . . . . . . . . . . . 16
4.7. rMSK Properties . . . . . . . . . . . . . . . . . . . . . 16
5. Protocol Details . . . . . . . . . . . . . . . . . . . . . . . 17
5.1. ERP Bootstrapping . . . . . . . . . . . . . . . . . . . . 17
5.2. Steps in ERP . . . . . . . . . . . . . . . . . . . . . . . 20
5.2.1. Multiple Simultaneous Runs of ERP . . . . . . . . . . 22
5.2.2. ERP Failure Handling . . . . . . . . . . . . . . . . . 23
5.3. New EAP Packets . . . . . . . . . . . . . . . . . . . . . 24
5.3.1. EAP-Initiate/Re-auth-Start Packet . . . . . . . . . . 25
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