An efficient signature aggregation scheme with antenna hardware implementation for VANETs

Vehicular ad-hoc networks (VANETs) plays a major role in enhancing road safety and traffic management. However, they suffer from security and scalability issues due to dynamic network conditions. Conventional signature aggregation schemes have high computational and communication cost limiting real-time efficiency. To overcome this issue, an efficient mutual certificateless anonymous authentication with signature aggregation is presented in this work. Moreover, a compact printed antenna using concentric octagonal rings based on the 'Golden ratio' principle is designed in this work. This antenna is used for the transfer of location-based information (LBI) at a frequency of 5.90 GHz inside the Dedicated Short-Range Communications (DSRC) band (802.11p) between the On-board unit (OBU) of the vehicle user and the roadside unit (RSU). Further, formal and informal security investigation shows the resistance of the proposed protocol against well-known attacks. Moreover, the efficiency of the suggested protocol is analysed in terms of security attributes, computational and communication overhead using the Cygwin platform with respect to relevant works. Finally, the performance of the designed antenna for the transfer of LBI is validated based on return loss, impedance bandwidth, gain, cross-polarization discrimination, back-lobe radiation, and radiation efficiency using the Computer Simulation Technology (CST) microwave studio (v2019).