A novel road side unit assisted hash chain based approach for authentication in vehicular Ad-hoc network

Growth of connected vehicles in vehicular social network (VSN) for the ease of driving, route recommendation and infotainment services involve huge exchange of messages between the vehicles. This exchange of messages is prone to several security attacks. Also, the messages must be from authentic source for the success of VSN. Thus, VSN attracts industries, researchers and academia for the development and deployment of a network for its secured communication. Vehicular Ad-hoc Network (VANET) can provide a promising solution for connected vehicles. VANET is a framework in the intelligent transportation systems (ITS) which provide communication between vehicles also known as vehicle to vehicle (V2V) and to infrastructure also known as vehicle to infrastructure (V2I) communications using dedicated short range communication (DSRC) and wireless Access for Vehicular Environment (WAVE). Several security and privacy majors have been taken up by the researchers in the literature. Also most of the scheme completely relies on the trusted authority (TA) for all decisions. However, because of the strict time constraints, the delay must be minimum and incurs less computational and communication overhead. In this research work, RSU assisted hash chain based approach has been proposed to mitigate security and privacy attacks. RSU based scheme thus reduces the complete dependency on the TA. Simulation results show the effectiveness of proposed work as compared to existing work mentioned in this paper.