Secure Information Sharing Approach for Internet of Vehicles Based on DAG-Enabled Blockchain

Information sharing in vehicular networks has great potential for the future Internet of Vehicles (IoV). and roadside units (RSUs) can exchange perceptual information driving experience to enable intelligent transportation applications such as autonomous road condition analysis. However, ensuring secure efficient among vehicles is challenging. While traditional blockchain guarantee tamper-proof nature shared information, it cannot be directly applied large-scale vehicle due its slow consensus process. Therefore, we propose an approach based on a directed acyclic graph (DAG), which encapsulated into sites instead blocks. We also decision-based tip selection algorithm (DDB-TSA) design reputation-based rate control strategy (RBRCS) ensure sharing. Simulation results show that our reduces latency, improves efficiency, provides more environment compared existing DAG-enabled systems.