基于网络拓扑关系和节点交互行为的动态信任模型  

Dynamic Trust Model Based on Network Topology and Node Interaction

作　　者：薛红荣 杜翠凤 XUE Hongrong;DU Cuifeng(GCI Science&Technology Co.,Ltd.,Guangzhou 510310,China)

机构地区：[1]广州杰赛科技股份有限公司,广东广州510310

出　　处：《计算机与网络》2021年第16期69-72,共4页Computer & Network

摘　　要：针对无线传感网络点对点安全系统对节点交互行为的动态适应能力和对节点信息反馈能力评估的不足,提出一种基于网络拓扑关系和节点交互行为的动态信任模型。通过网络拓扑结构来衡量节点之间的短期信任度。在此基础上,引入时间衰减因子计算节点之间的长期信任度,考虑到节点交互存在信任的可靠性问题,引入偏差因子衡量节点交互次数的差异并通过偏差因子之间差异性来衡量反馈信任。实验表明,模型具有更强的适应能力和更可信的评估能力,能够在一定程度上应对恶意节点对网络采取的策略性行为改变和不诚实反馈。Aiming at the deficiency of the evaluation of the dynamic adaptability and information feedback ability of the peer-to-peer security system in wireless sensor networks,a dynamic trust model based on network topology and node interaction behavior is proposed.The short-termtrust degree between nodes is measured by network topology;on this basis,the time decay factor is introduced to calculate the long-term trust degree between nodes;then,considering the reliability of trust in node interaction,the deviation factor is introduced to measure the difference of node interaction times,and the feedback trust is measured by the difference between deviation factors.Experiments show that the model proposed has stronger adaptability and more reliable evaluation ability,and can deal with the strategic behavior change and dishonest feedback of malicious nodes to a certain extent.

关 键 词：点对点安全系统 动态信任 网络拓扑关系 节点交互行为 

分 类 号：TN918.91[电子电信—通信与信息系统]