无线传感器网络中利用部署知识的组合密钥预分发算法设计

在无线传感器网络(WSNs)的安全体系结构中,密钥预分发算法占据着极其重要的位置.然而,现有的密钥预分发算法通常都是在连通性、抵抗节点捕获的安全弹性和存储、通信和计算过载之间进行交换,很难使各项指标都很理想.为此,本文在对WSNs各种典型密钥预分发算法的特点进行详尽分析的基础上,通过利用部署知识和密钥空间的极限安全特性于组合模型中的方法,提出了一种新的适合于WSNs密钥预分发算法.理论分析及仿真证明了该算法在占用较小的内存和过载、局部完全连通的情况下,能使网络得到完美的安全弹性.

Combinatorial Key Predistribution Algorithm for Wireless Sensor Networks Using Deployment Knowledge

In security construction of Wireless Sensor Network system(WSNs) key pre-distribution algorithm is in a important position. However the present key pre-distribution algorithms trade-off among of connectivity, resilience against node capture and storage, communication and computation overload. It is difficult to make all performance ideal. Therefore this paper presents a new method of key pre-distribution by using deployment knowledge and limit security of key space in combination model based on analyzing all kinds of typical key pre-distribution algorithms features in detail. Theory analysis and simulation prove that this method can get perfect security resilience in the condition of taking up little EMS and overload, local complete connection.