Provably Secure Distributed Efficient Edge Authentication Protocol with Anonymity in Internet of Vehicles

Considering the problem that the current distributed authentication protocols in the Internet of Vehicles (IoV) directly depend on semi-trusted Road Side Units (RSU), a new distributed authentication model is proposed. The RSUs in this model establish automatically the edge authentication area through a three-stage broadcast, and these RSUs in the area save synchronously the vehicle certification records. RSU can prevent abnormal authentication behavior of malicious RSU by verifying the authentication records saved synchronously by nodes. Then, a distributed anonymous authentication protocol in IoV is designed by using Chebyshev chaotic mapping, to avoid the storage burden caused by the pseudonym mechanism, the vehicle sends messages without directly carrying identity information. Finally, the security of the protocol is proved by using random oracle. The simulation results show that the proposed scheme has lower authentication delay and communication cost.