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密钥预分配方案关乎无线传感器网络节点间协同的安全问题.现有的密钥预分配方案大多存在连通率低,抗捕获性差,灵活性差等缺点.该文在分析现有密钥预分配方案的基础之上,对TD(k,n)模型作出了适当的改进,设计出一种均匀分布TD(k,n)模型,引入Blundo二元对称多项式加密方法,并结合提出的均匀分配TD(k,n)模型,进一步提出了一种改进的分组密钥预分配方案IGDKPS(improved key-predistribution scheme based on group deployment).理论分析和仿真结果表明:IGDKPS方案在安全连通率、抗捕获性、灵活性等方面均有良好表现.
Key pre-allocation scheme is concerned with the security issues of collaborative nodes in WSNs.The existing key pre-allocation schemes mostly have the disadvantages of low connectivity, poor anti-capture and poor flexibility.This paper analyzes the existing key pre-distribution schemes , The TD (k, n) model is modified properly. A uniform TD (k, n) model is designed and Blundo binary symmetric polynomial encryption is introduced. Combining with the proposed TD (k, n) (IGDKPS) is proposed in this paper.An improved key-predistribution scheme based on group deployment (IGDKPS) is proposed in this paper.The theoretical analysis and simulation results show that IGDKPS scheme has good performance in secure connectivity, anti-capture, Flexibility and so on have good performance.