A Certificateless Authentication and Key Agreement Scheme Based-Blockchain in the Internet of Vehicles

The communication mainly relies on the public network in the Internet of vehicles, so that the transmitted information is intercepted or tampered and so on. Hence identity authentication is essential to ensure the security and privacy. Many schemes have been proposed until now. However, they still exist some challenges such as privacy ledge, high computational burden and centralization problem. Therefore, we proposed a certificateless authentication and key agreement scheme which utilizes elliptic curve and blockchain technology. In addition, we also an autonomous pseudonym mechanism to protect privacy of vehicles from being tracked. And then, performance evaluation shows that the proposed scheme is of high efficiency.