Road Safety Against Sybil Attacks Based on RSU Collaboration in VANET Environment

Abstract

Vehicular Ad-hoc Network (VANET) is a special case of an Ad hoc mobile network formed by vehicles communicating directly with each other or via a wireless infrastructure called the Road Side Unit (RSU). Like all similar networks, VANET is more concerned with Sybil attacks where a malicious attacking node sends messages with multiple identities to other nodes in the network. Thus, causing a general malfunction of the network, which gives the illusion of a problem of traffic like traffic jam or a virtual accident. So, honest vehicles change their path or leave the road for the benefit of ‘attacker’. In this paper, we present an effective solution against this severe threat by using a distributed and collaborative technique between RSUs allowing the detection of Sybil vehicles based on their real positions.