基于多密钥空间的无线传感器网络密钥管理方案

提出了一种基于多密钥空间密钥对预分布模型的无线传感器网络(WSN)密钥管理方案。该方案结合q-composite随机密钥预分布模型，并且通过引入地理位置信息，有效提高了节点之间安全连通的概率。分析表明，该方案在不增加存储空间的情况下，提高了邻居节点拥有相同密钥空间的概率，并且与多密钥空间密钥对预分布方案相比，可大幅提高被俘节点的阈值，增强了网络安全性，能够较好地适应无线传感器网络的网络环境和安全要求。

Key management scheme for wireless sensor network based on multiple key spaces

This paper proposed a key management scheme based on the pairwise key predistribution scheme for Wireless Sensor Network (WSN). This scheme combined the q-composite random key predistribution scheme and introduced the location information to enhance secure connection probability between nodes. The analysis results show that this scheme doesn't need additional memory space and increases the probability that neighbor nodes have the same key space. Compared with the pairwise key predistribution scheme, this scheme can increase the threshold of captured nodes and improve the security of WSN, and fits the network environment and meets the security requirements of WSN.