无线传感器网络中基于规范的入侵检测算法研究

摘要

To solve the security problem of wireless sensor networks, this paper proposed a kind of intrusion detection algorithm based on specification. The algorithm set threshold for characteristic quantity of neighborhood nodes in unit time according to the theory of probability. The method of threshold setting was versatile, and threshold could be updated adaptively to accord with the properties of sensor nodes changing over time. Compared the characteristic quantity in unit time from detection node with the threshold to judge invasion. Simulation results show the proposed algorithm is superior to other intrusion detection schemes based on specification, not only can meet high detection rates and low false positives, but also has good energy efficiency.%为了解决无线传感器网络的安全问题,提出了一种基于规范的入侵检测算法.该算法根据概率论的有关理论,对邻域节点的单位时间特征量设定阈值,阈值的设定方法具有通用性,并且阈值自适应更新,符合传感节点性能随着时间发生变化的特点.将检测节点获得的单位时间特征量值与阈值进行对比来判断入侵.通过仿真实验验证了该算法优于其他基于规范的入侵检测方案,不仅能够满足高检测率低误报率的要求,还具有较好的能效性.