Sybil攻击防范算法研究

针对无线传感器网络 Sybil攻击的安全性威胁问题，分析了其攻击原理和现有的防范算法.提出了一种分散式防范算法，分别采用测量一致性、测量与计算一致性2种方法对攻击节点进行检测.该算法改变了传统集中式防范算法的思路，并能滤除攻击生成的虚节点.仿真和实验结果表明，该算法对Sybil攻击有很强的针对性，能达到99%的虚节点滤除率，并且有很好的鲁棒性.

Study of the Guarding Algorithm against Sybil Attack

The increasing application of WSN (Wireless Sensor Network) brings forward higher and higher requirements on the security of the network.The Sybil is one of the multitudinous security attacks that WSN has to face now and is one of the most ruinous.Based on the analysis of its attacking principle, a type of dispersing guarding algorithm linked with network localization was proposed.The algorithm was used for the measurement of the consistency and the calculation of two methods for the detection of attack nodes, which is different from the traditional centralized guarding mode.The emulation of the algorithm and the experiment results indicate that the algorithm has very good pertinence and robustness against Sybil attack.