A Layer-2 Multi-hop Authentication and Credential Delivery Scheme for Vehicular Networks

In this paper we introduce a novel security architecture and security mechanisms for vehicular networks environments. Our approach provides a layer-2 multi-hop authentication and credential delivery scheme between vehicles and the network operator authentication server. We analyze the performance of the proposed solution through extensive simulations, showing the success of our scheme (compared to the legacy single-hop scheme) in providing a robust and efficient authentication and credential delivery to vehicles. Based on the obtained performance analysis, we derive some guidelines aiming to optimize our solution under various vehicles densities.