Distribution of EAP-Based Keys for Handover and Re-Authentication
RFC 5749
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RFC - Proposed Standard
(March 2010; Errata)
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2015-10-14
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IETF
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RFC 5749 (Proposed Standard)
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Unknown
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Tim Polk
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Internet Engineering Task Force (IETF) K. Hoeper, Ed.
Request for Comments: 5749 M. Nakhjiri
Category: Standards Track Motorola
ISSN: 2070-1721 Y. Ohba, Ed.
Toshiba
March 2010
Distribution of EAP-Based Keys for Handover and Re-Authentication
Abstract
This document describes an abstract mechanism for delivering root
keys from an Extensible Authentication Protocol (EAP) server to
another network server that requires the keys for offering security
protected services, such as re-authentication, to an EAP peer. The
distributed root key can be either a usage-specific root key (USRK),
a domain-specific root key (DSRK), or a domain-specific usage-
specific root key (DSUSRK) that has been derived from an Extended
Master Session Key (EMSK) hierarchy previously established between
the EAP server and an EAP peer. This document defines a template for
a key distribution exchange (KDE) protocol that can distribute these
different types of root keys using a AAA (Authentication,
Authorization, and Accounting) protocol and discusses its security
requirements. The described protocol template does not specify
message formats, data encoding, or other implementation details. It
thus needs to be instantiated with a specific protocol (e.g., RADIUS
or Diameter) before it can be used.
Status of This Memo
This is an Internet Standards Track document.
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). Further information on
Internet Standards is available in 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/rfc5749.
Hoeper, et al. Standards Track [Page 1]
RFC 5749 HOKEY Key Distribution March 2010
Copyright Notice
Copyright (c) 2010 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
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Contributions published or made publicly available before November
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Without obtaining an adequate license from the person(s) controlling
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Key Delivery Architecture . . . . . . . . . . . . . . . . . . 5
4. Key Distribution Exchange (KDE) . . . . . . . . . . . . . . . 6
4.1. Context and Scope for Distributed Keys . . . . . . . . . . 7
4.2. Key Distribution Exchange Scenarios . . . . . . . . . . . 8
5. KDE Used in the EAP Re-Authentication Protocol (ERP) . . . . . 8
6. Security Considerations . . . . . . . . . . . . . . . . . . . 9
6.1. Requirements on AAA Key Transport Protocols . . . . . . . 9
6.2. Distributing RK without Peer Consent . . . . . . . . . . . 10
7. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 10
8. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 10
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 10
9.1. Normative References . . . . . . . . . . . . . . . . . . . 10
9.2. Informative References . . . . . . . . . . . . . . . . . . 11
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