Authenticated Wireless Roaming via Tunnels: Making Mobile Guests Feel at Home

Tue, 12/02/2008 - 01:19 by Damien Leroy • Categories:

Abstract

In wireless roaming a mobile device obtains a service from some foreign network while being registered for the similar service at its own home network. However, recent proposals try to keep the service provider role behind the home network and let the foreign network create a tunnel connection through which all service requests of the mobile device are sent and answered directly by the home network. Such wireless roaming via tunnels (WRT) offers several (security) benefits but states also new security challenges on authentication and key establishment, as the goal is not only to protect the end-to-end communication between the tunnel peers but also the tunnel itself.

In this paper we formally specify mutual authentication and key establishment goals for WRT and propose an efficient and provably secure protocol that can be used to secure such roaming session. Additionally, we describe some modular protocol extensions to address resistance against DoS attacks, anonymity of the mobile device and unlinkability of its roaming sessions, as well as the accounting claims of the foreign network in commercial scenarios.

Authors
Mark Manulis, Damien Leroy, Francois Koeune, Olivier Bonaventure and Jean-Jacques Quisquater
Source
Proceedings of the ACM Symposium on Information, Computer and Communications Security (ASIACCS 2009), pages 92-103, Sydney, Australia, March 2009.
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