A Consortium Blockchain-Based Model for Data Sharing in Internet of Vehicles.

Internet of Vehicles (IoV) provides a broad range of services of data exchange of traffic information to improve the effectiveness of smart vehicles. However, the security issues in Internet of Vehicles are multifaceted: data theft, message tampering and forgery, etc., which results in possibilities of incorrect data sharing. To address above issues, we proposed an efficient blockchain-based data sharing model. In this paper, we leverage the consortium blockchain and enhanced Diffie-Hellman algorithm to build a trust decentralized verifying mechanism, which is designed to secure the data sharing process in IoV. To improve the performance, we optimize the consensus mechanism on our blockchain-based system by decreasing the consensus delay without affecting the correctness of consensus verifying. The security analysis and simulation experiments show that our model meets security requirements and the overhead from our system is acceptable for IoV.