Time-efficient and attack-resistant authentication schemes in VANET

Abstract

VANET (Vehicular Ad hoc Network) brings evolution in the transportation system. It is vulnerable to different kind of attacks. Authentication is the first line of defense against security problems. The previous researcher comes with some cryptographic, trust-based, ID-based, and signature-based authentication schemes. If we consider the performance of previous schemes, process time and efficiency need to be improved. Faster authentication can help to establish communication in a short time and RSU can serve more number of vehicles in a shorter time span. We presented AECC (Adaptive Elliptic Curve Cryptography) and EECC (Enhanced Elliptic Curve Cryptography) schemes to improve the speed and security of authentication. In AECC key size is adaptive, i.e., different sizes of keys are generated during the key generation phase. Three ranges are specified for key sizes small, large, and medium. In EECC, we added an extra parameter during transmission of information from the vehicle to RSU (Road Side Unit) for key generation. This additional parameter gives the information about vehicle ID and location of the vehicle to RSU and other vehicles.