With the rapid advance of Internet of Vehicles (IoV), vehicles are embedded everywhere in the transportation system as ubiquitous things connected based on V2X (Vehicle to Everything) communication technology, which has become an important topic currently in IoV. Meanwhile, risk, cybersecurity and privacy are major challenges for such a development. In recent years much research set focus on the safety, efficiency and mobility applications in V2X communication. The protection of the integrity, authenticity and tamper-proof of V2X communication messages has been carried out in trust model of credential management system. This system defines legal, policy and technical requirements for the management of public key certificates for V2X communication applications by issuing certificates to system modules and V2X entities. This paper provides an overview of IoV with emphasis on system architecture, enabling cryptographic algorithms technologies, certificate format of existing systems. Besides, an overview of cybersecurity challenges for the key V2X communication and a summary of related security solutions are presented. Moreover, critical thinking of existing privacy policy and certificate management strategy are further discussed. Finally, this paper also presents the significance of horizontal integration among V2X services in the future.

Internet-of-Vehicle;V2X communication;Credential management;Information security