摘要： 伪装攻击通过恶意的锚节点向网络中发布虚假位置信息从而对定位应用进行攻击。针对上述问题，考虑无线传感器网络节点能量受限的特性，提出一种基于对称密码加密的认证方案来防御伪装攻击。实验结果表明，在伪装攻击存在的情况下，该方案能够使加权质心算法的定位误差在1 m之内的概率由40%提高到70%，从而保证定位的正确性。

关键词: 无线传感器网络, 伪装攻击, 安全定位

Abstract: This paper presents a security threat model called impersonating attack model. In this model, the malicious beacons supply forged location information to the regular sensors, so as to attack the location applications. Since sensor nodes are power and computational capacities limited, a scheme based on symmetric cryptography is proposed to defense against impersonating attack. Experimental results show that, even in the presence of impersonating attack, the scheme can decrease the cumulative localization error of Weighted Centroid Algorithm. The probability which the localization error is within 1 m can be improved from 40% to 70% with the scheme.

Key words: Wireless Sensor Networks(WSN), impersonating attack, secure localization

中图分类号: 

• TP309