容忍入侵的无线传感器网络模糊信任评估模型

Fuzzy trust model for wireless sensor networks with intrusion tolerance

针对无线传感器网络的"数据感知融合"和"数据转发"两类关键服务面临的内部攻击,提出了一种基于信任—信心值的二元组模糊信任评估模型,可有效识别路由和数据分组丢弃攻击,并通过限制数据的篡改范围,实现对难以发现的数据篡改攻击的容忍。以示例给出并分析了基于模糊信任模型的容忍入侵机制,以仿真实验说明了模糊信任模型针对路由和数据分组丢弃攻击在入侵节点与普通节点分类上的效果;最后分析了模糊信任模型对网络性能的影响,并阐述了与相关工作的异同。

To protect key services of wireless sensor networks of data fusion and package forward,a fuzzy trust model based on trust and confidence and its evaluation algorithms were presented,in which the value of confidence was used to describe the impreciseness of the value of the trust.Then the simulation and the example were given to show the per-formances of using the model to detect or tolerate the insidious attacks.Finally,the package drop ration of the networks with the trust evaluation system was simulated and the comparison with the related work was discussed.