Fast Exclusion of Errant Devices from Vehicular Networks

—Vehicular networks, in which cars communicate wirelessly to exchange information on traffic conditions, offer a promising way to improve road safety. Yet ensuring the correct functioning of such a system is essential: malicious or faulty devices transmitting inaccurate messages could trigger accidents. Therefore, any errant device, along with the messages it generates, must be identified and ignored as quickly as possible. This task is especially challenging because traditional approaches to revoking credentials use a central authority, causing long delays during which the network is vulnerable. To eliminate this window of vulnerability, we propose that vehicles locally decide whether to exclude errant devices. We describe two ways of doing so: first, LEAVE, an existing protocol which allows devices to vote by exchanging signed claims of impropriety, and second, Stinger, a new protocol where a device unilaterally removes a misbehaving neighbor by agreeing to limit its own partici...

• Type: Conference
• Year: 2008
• Where: SECON
• Authors: Tyler Moore, Maxim Raya, Jolyon Clulow, Panagiotis Papadimitratos, Ross Anderson, Jean-Pierre Hubaux
• Keywords: Communications, Errant Devices, Faulty Devices, SECON 2008, Traffic Conditions