基于HashGraph的车联网分布式信任机制研究和实现  

Research and implementation of distributed trust model for VANET based on HashGraph

作　　者：李原帅 曹利[1] 张迪 Li Yuanshuai;Cao Li;Zhang Di(College of information Science Technology,Nantong University,Nantong,Jiangsu 226001,China)

机构地区：[1]南通大学信息科学技术学院,江苏南通226001

出　　处：《计算机时代》2023年第10期22-26,31,共6页Computer Era

基　　金：南通市科技项目(JC22022036)。

摘　　要：针对车联网恶意节点攻击的多样性和不确定性,提出一种基于区块链3.0的分布式信任机制。设计了一种信任计算模型,在结合HashGraph区块链分布式架构的基础上,利用智能合约的自主性,完成车辆信任值的自动计算。同时,为适应车联网应用环境的实时性要求,设计了高效无时延的Follower共识算法。实验和数据分析表明,该方案既可准确高效地评估车辆传输消息的真实性,又可快速判别车辆节点的可信度,抵御复杂多变的恶意节点攻击。To address the diversity and uncertainty of malicious attacks in VANET,a distributed trust model based on block-chain 3.0 technology is proposed.Combined with distributed architecture of HashGraph,using the autonomy of smart contract,a trust calculation model is designed to complete the automatic calculation of vehicle trust value.Meanwhile,an efficient and non-delay Follower consensus algorithm is designed to satisfy the timely requirement of VANET.Experiments and data analysis show that the model can not only efficiently evaluate the authenticity of messages transported by vehicles,but distinguish the credibility about vehicles,which resist complex and varied attacks.

关 键 词：车联网 信任机制 HashGraph(哈希图) 智能合约 共识机制 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]