抵御虫洞攻击的无线传感器网安全定位算法

Secure Localization Algorithm Against Wormhole Attack in WSN

节点定位技术是无线传感器网络的支撑技术之一,节点位置信息是很多基于无线传感器网络的应用的基础。无线传感器网络是一个动态的网络,每隔一段时间需要进行重新定位,并且在重定位过程中易受到攻击节点攻击。针对无线传感器网络中无需测距的定位技术,分析虫洞攻击对DV-Hop定位的影响,提出了一种基于信誉模型的抵御虫洞攻击的分布式轻量级DV-Hop安全定位算法TMDV-Hop(Trust-Model-based DV-Hop Localization Against Wormhole Attack)。仿真表明,在无需额外硬件辅助下,TMDV-Hop算法能有效降低虫洞攻击对定位过程的影响,验证了该算法的有效性。

Localization is a pivotal technology in wireless sensor networks and location information of sensor nodes is essential to location-based applications. Wireless sensor network is a dynamic network,which is re-localized for a time. However,attackers are invaded easily and influence the re-localization. In this paper,we analyze the influence of wormhole attack on DV-Hop firstly. Then,a Trust-Model-based DV-Hop localization against wormhole attack is proposed. The simulation results shows that the proposed TMDV-Hop can efficiently reduce the effects of the wormhole attack on the DV-Hop re-localization without extra-hardware,which validates the effectiveness of the proposed algorithm.