PBTM: A Privacy-Preserving Announcement Protocol With Blockchain-Based Trust Management for IoV

As a promising technology, the Internet of Vehicle (IoV) enables vehicles connected to the network and sends announcements to roadside units (RSUs) or other vehicles. Nevertheless, because of the open nature of IoV, trust and privacy are confronted with challenges from cyber attacks. Motivated by addressing the above-mentioned problems, a privacy-preserve announcement protocol is constructed in this article, in which an identity-based group signature is used to achieve anonymity of vehicles. In addition, a novel blockchain-based trust management system is designed to guarantee the authenticity of the transmitted messages while realizing the message synchronization. In the meanwhile, a joint proof of work and improved practical Byzantine fault tolerance consensus mechanism is adopted in our scheme to enhance the efficiency of verification. Security analysis as well as simulation results indicate that our proposal is suitable and effective for IoV environment.

Automated summary

The Internet of Vehicle (IoV) technology enables connected vehicles to send announcements, but faces challenges of trust and privacy from cyber attacks. To address these issues, a privacy-preserve announcement protocol and blockchain-based trust management system are proposed, utilizing group signature and consensus mechanisms for enhanced security.