一种移动无线传感器网络抵御虫洞攻击MCL算法

MCL算法作为MWSN的一种经典定位算法,其安全性还欠缺考虑,为了使MCL算法能抵御虫洞攻击,分析了MCL机制及虫洞攻击对MCL性能的影响,在此基础上提出了一种能抵御虫洞攻击的安全MCL算法—DewormMCL。该算法利用节点的移动性有效识别锚节点信息,剔除掉伪锚节点信息,且不需要额外的硬件支持,也不会增加通信开销。仿真结果表明,该安全定位算法对虫洞攻击具有较好的抵御性；随着算法的收敛,遭受虫洞攻击的MCL性能逐渐恢复正常,在文中的仿真条件下,定位误差从0.45r降到0.4r,定位率从80%提升到90%。

A MCL Algorithm Against Wormhole Attack in MWSN

As a classical localization algorithm in MWSN,MCL algorithm is still lack of consideration of security.In order to defeat wormhole attack in MCL,we firstly analyze MCL mechanism and the impact of wormhole attack on the performance of MCL,and then propose a secure MCL algorithm,named DewormMCL,to defeat wormhole attack in this paper,which takes advantages of nodes’ mobility to identify anchor information effectively and filter out false anchor information.It requires no additional hardware support,and also not increase the communication overhead. Simulation results demonstrate that the secure localization algorithm shows good resistivity to wormhole attack. With the convergence of the algorithm,the performance of MCL suffered from wormhole attack will gradually return to nor-mal.Localization error drops from 0.45r to 0.4r and the percentage of localizable nodes increases from 80% to 90%under the simulation conditions in the paper.