Blockchain-Based Trust Management Scheme for Internet of Vehicles

Abstract

To address low-efficiency trust management in the Internet of Vehicles (IoV), this paper proposes a hybrid consensus algorithm combining Delegated Proof of Stake (DPoS) and Practical Byzantine Fault Tolerance (PBFT). By selecting dual primary nodes through DPoS voting and trust values, it enhances consensus security. The three-stage consensus protocol is optimized to a fivestage one, reducing node communication and improving efficiency. Experiments show the algorithm increases throughput by$1.46 \times$on average and reduces consensus delay by$1.54 \times$.