Internet Engineering Task Force (IETF) Y. Ohba
Request for Comments: 5836 Toshiba
Category: Informational Q. Wu, Ed.
ISSN: 2070-1721 Huawei
G. Zorn, Ed.
Network Zen
April 2010
Extensible Authentication Protocol (EAP)
Early Authentication Problem Statement
Abstract
Extensible Authentication Protocol (EAP) early authentication may be
defined as the use of EAP by a mobile device to establish
authenticated keying material on a target attachment point prior to
its arrival. This document discusses the EAP early authentication
problem in detail.
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/rfc5836.
Ohba, et al. Informational [Page 1]RFC 5836 Early Authentication PS April 2010Copyright Notice
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Ohba, et al. Informational [Page 2]RFC 5836 Early Authentication PS April 2010Table of Contents
1. Introduction ....................................................3
2. Terminology .....................................................4
3. Problem Statement ...............................................6
3.1. Handover Preparation .......................................6
3.2. Handover Execution .........................................6
3.2.1. Examples ............................................7
3.3. Solution Space .............................................7
3.3.1. Context Transfer ....................................7
3.3.2. Early Authentication ................................8
4. System Overview .................................................8
5. Topological Classification of Handover Scenarios ................9
6. Models of Early Authentication .................................10
6.1. EAP Pre-Authentication Usage Models .......................10
6.1.1. The Direct Pre-Authentication Model ................11
6.1.2. The Indirect Pre-Authentication Usage Model ........11
6.2. The Authenticated Anticipatory Keying Usage Model .........13
7. Architectural Considerations ...................................13
7.1. Authenticator Discovery ...................................13
7.2. Context Binding ...........................................14
8. AAA Issues .....................................................14
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