A dynamic key distribution protocol for PKI-based VANETs

Secure communication in Vehicular Ad hoc Networks (VANETs) can be achieved through a public key infrastructure (PKI). A tamper proof device (TPD) is traditionally used to statically store encryption keys in each vehicle. These keys are renewed periodically by a certificate authority (CA). In this paper, a dynamic key distribution protocol for PKI-based VANETs is proposed. A vehicle dynamically requests a key from its nearest road side unit. This request is securely propagated through network infrastructure to reach a CA cloud and a key is returned. A proposed key revocation mechanism makes use of the enhanced key distribution protocol to reduce the number of messages needed for revocation. Performance analysis has been performed through network simulation to demonstrate that the proposed protocol can dynamically support efficient and cost-reduced key distribution for vehicles.

[1]  Yih-Chun Hu,et al.  Security certificate revocation list distribution for vanet , 2008, VANET '08.

[2]  Yu Cheng,et al.  A Distributed Key Management Framework with Cooperative Message Authentication in VANETs , 2011, IEEE Journal on Selected Areas in Communications.

[3]  Stephan Olariu,et al.  Vehicular Networks: From Theory to Practice , 2009 .

[4]  Theodore L. Willke,et al.  A survey of inter-vehicle communication protocols and their applications , 2009, IEEE Communications Surveys & Tutorials.

[5]  Maxim Raya,et al.  The security of vehicular ad hoc networks , 2005, SASN '05.

[6]  Srdjan Capkun,et al.  Secure positioning of wireless devices with application to sensor networks , 2005, Proceedings IEEE 24th Annual Joint Conference of the IEEE Computer and Communications Societies..

[7]  Tracy Camp,et al.  A survey of mobility models for ad hoc network research , 2002, Wirel. Commun. Mob. Comput..

[8]  Peng Ning,et al.  P2DAP — Sybil Attacks Detection in Vehicular Ad Hoc Networks , 2011, IEEE Journal on Selected Areas in Communications.