无线传感器网络中的Sybil攻击

On Sybil attack in wireless sensor networks

研究了无线传感网中Sybil攻击的检测与防范,提出了一种多节点协作的基于接收信号强度(RSS)的检测机制CRSD。它的基本思想是Sybil节点所创建的不同身份,其网络位置是相同且无法改变的。CRSD通过多节点协作确定不同身份的网络位置,将出现位置相同的多个身份归为Sybil攻击。仿真实验表明无防范时Sybil攻击显著降低了系统吞吐量,而CRSD能检测出Sybil节点从而有效地保护了系统性能。

A novel detection mechanism, called Cooperative RSS-based Sybil Detection （CRSD） used in static and resource-limited Wireless Sensor Networks （WSN） was proposed. CRSD took use of the Received Signal Strength （RSS） to induce the distance between two nodes and further determined the positions of the identities of interests by use of the RSS information from multiple neighbor nodes. A Sybil attack was detected when two or more different identities with almost the same position were got. The simulations and results show that, first, Sybil attack can certainly deteriorate the system performance significantly and furthermore, CRSD can detect such attack in most cases and thus facilitate the avoidance of using Sybil node to protect the overall performance effectively.