基于功能信任的无线传感器网络安全数据融合方法

摘要

In order to deal with the nodes malicious behavior and their own fault problem in wireless sensor networks, a functional-trust based secure data aggregation method in wireless sensor networks is proposed. In this method, wireless sensor nodes compute the functional-trust values using respective functional actions monitored by neighboring nodes, and detect the nodes sensing action by u-sing consistency of local correlation. The simulated experimental results in NS2 show that the proposed method can effectively reduce the impact of aggregation result caused by malicious nodes and their own fault problem,and improve the security and reliability of the data aggregation and extend the network lifetime.%针对无线传感器网络节点恶意行为和自身故障问题,将节点信任按其功能行为分为传感信任、融合信任和传递信任,提出一种基于功能信任的无线传感器网络安全数据融合方法,并利用局部相关一致性原理检测节点的传感功能行为.NS2环境下的仿真实验结果表明,该方法可以有效地避免恶意节点对数据融合结果造成的影响,提高了数据融合的安全性和可靠性,延长了网络的寿命.