A Random Key Predistribution Scheme for Wireless Sensor Networks Based on Region Security Level
Random key predistribution is a usually adopted method in establishing the pairwise keys in wireless sensor networks. However, most of existing random key predistribution schemes use the same key predistribution way to all the sensor nodes in the whole region whereas rarely consider having different security7 levels in the deployment region, so they only can provide some extent of network resilience. As the number of compromised nodes increasing, the fraction of compromised communications will increase quickly. In order to address these shortcomings, in this paper, we present a new random key predistribution scheme based region security levels. This scheme first divides the whole application region into a few subregions according to their individual security levels, at the same time divides the whole sensor nodes into a few corresponding subgroups too, and then it combines the key predistribution in different subgroups sensor nodes with the security level of the region in which they lie in. Meanwhil e, the scheme use hash function to derive the different keys stored into different subgroups sensor nodes. The analysis and simulations show that our scheme has a better network resilience against node capture attack, while maintaining the same probability of direct key establishment.
wirelesssensornetwork keypredistribution region security level hash function
Xueli Yan Xiaohui Ye
College of Electronic Engineering Navel University of Engineering WuHan. China College of Electronic Engineering Navel University of Engineering WuHan, China
国际会议
海口
英文
401-405
2011-07-15（万方平台首次上网日期，不代表论文的发表时间）