一种无线传感器网络预分配密钥管理方案的改进

摘要

Wireless Sensor Network (WSN) was usually vulnerable to conspiracy attack from its adversaries when using bivariate polynomial key pre-distribution protocol. In order to solve this problem, a pre-distribution key management scheme for WSN was improved by reducing the amount of pairwise keys sharing between sensor nodes and changing the means of establishing pairwise keys between clusters. Analysis shows that the improved scheme not only maintains the advantages such as higher security of the original scheme, but also saves the limited memory storage of sensor nodes further, reduces the communication overhead of sensor nodes, extends the lifespan of the networks and can withstand conspiracy attack effectively.%无线传感器网络在应用二元多项式密钥预分配协议时,通常容易遭受到敌方的合谋攻击.为了更好地解决这一问题,通过减少普通节点共享的密钥个数,改变簇首间建立共享密钥的方式,改进了一种无线传感器网络的密钥预分配管理方案.分析表明,改进后的方案保留了原方案的网络高安全性等优点,而且进一步节省了普通节点的内存空间,减少了节点间的通信量,延长了网络的生存周期,能够有效地抵御敌方的合谋攻击.