车联网中基于区块链的信用体系研究

Research on Credit System based on Blockchain in Vanet

车联网中,车辆根据接收其他车辆广播的消息,分析路况并制定行车策略。为了识别恶意车辆散布的虚假信息,保证驾驶员的人身财产安全,车辆需要判断接收到的消息是否真实。于是,提出了基于区块链的信用体系,利用区块链记录、更新车辆的信用值,通过贝叶斯概率公式判断接收到的消息的真实性,并实现用位置证明替换工作量证明的区块链。通过实验和理论分析,证明了提出的信用体系可以准确判断消息的真实性,并从多个角度分析基于位置证明的区块链的优越性和可行性。

In VANET,vehicles analyze traffic conditions and formulate driving strategies based on messages received from other vehicles.In order to identify the false information of a malicious vehicle walking and ensure the safety of the driver’s personal property,the vehicle needs to judge whether the received message is true.Therefore,a blockchain-based credit system is proposed,which uses the blockchain to record and update the vehicle’s credit value,uses the Bayesian probability formula to determine the authenticity of the received message,and implements the blockchain that replaces proof of work with proof of location.Through experiments and theoretical analysis,it is proved that the proposed credit system can accurately judge the authenticity of the message,and analyze the superiority and feasibility of the blockchain based on location proof from multiple angles.