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Design and evaluation of a novel hierarchical trust assessment approach for vehicular networks
Vehicular Communications ( IF 5.8 ) Pub Date : 2020-01-10 , DOI: 10.1016/j.vehcom.2019.100227
Hesham El Sayed , Sherali Zeadally , Deepak Puthal

In vehicular networks, vehicles communicate with each other and transfer messages to enhance the safety of both commuters and vehicles. Trust management in these networks has become a key issue because of the selfish behavior that is frequently exhibited by some vehicles. Most of the existing trust management schemes for vehicular networks schemes have adopted cryptographic techniques, which require high computation time and high network resource utilization. We propose a Hierarchical Trust Management System (HTMS) that relies on the trust metric computation for every individual vehicle. We also propose a systematic approach based on trust evaluation, trust propagation and trust aggregation to compute the trustworthiness of vehicles. Initially, the trust evaluation scheme computes a local trust score based on a behavioral analysis. Next, the proposed trust propagation model shares the computed local trust score to neighboring vehicles using a platoon-based dissemination technique. Based on the local trust score and propagated trust opinions, our aggregation technique computes a Global Trust score (GTS) using Dempster-Shafer theory. Finally, based on the computed GTS score, the proposed system invokes an action module to reward or punish vehicles. The simulation results obtained show that the proposed system is highly resilient to trust-based attacks and enables trustworthy peers to generate a higher number of data transfers within the network.



中文翻译:

一种新型的车载网络分层信任评估方法的设计与评估

在车辆网络中,车辆彼此通信并传输消息,以提高通勤者和车辆的安全性。由于某些车辆经常表现出自私的行为,因此这些网络中的信任管理已成为关键问题。现有的用于车载网络方案的大多数信任管理方案都采用了加密技术,这需要较长的计算时间和较高的网络资源利用率。我们提出了一种分层信任管理系统(HTMS),该系统依赖于每个车辆的信任度量计算。我们还提出了一种基于信任评估,信任传播和信任聚合的系统方法来计算车辆的可信度。最初,信任评估方案基于行为分析来计算本地信任分数。下一个,提出的信任传播模型使用基于排的传播技术将计算出的本地信任分数共享给相邻车辆。基于本地信任评分和传播的信任意见,我们的聚合技术使用Dempster-Shafer理论计算了全球信任评分(GTS)。最后,基于计算出的GTS分数,所提出的系统调用动作模块来奖励或惩罚车辆。获得的仿真结果表明,所提出的系统对基于信任的攻击具有高度的弹性,并使值得信赖的对等方能够在网络内生成更多数量的数据传输。我们的汇总技术使用Dempster-Shafer理论计算了全球信任度(GTS)。最后,基于计算出的GTS分数,所提出的系统调用动作模块来奖励或惩罚车辆。获得的仿真结果表明,所提出的系统对基于信任的攻击具有高度的弹性,并使值得信赖的对等方能够在网络内生成更多数量的数据传输。我们的汇总技术使用Dempster-Shafer理论计算了全球信任度(GTS)。最后,基于计算出的GTS分数,所提出的系统调用动作模块来奖励或惩罚车辆。获得的仿真结果表明,所提出的系统对基于信任的攻击具有高度的弹性,并使值得信赖的对等方能够在网络内生成更多数量的数据传输。

更新日期:2020-01-10
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