为了进一步增强无线传感器网络的连通性与安全性,提出一种基于六边形的无线传感器网络的随机密钥部署方案,该方案采用了六边形区域部署法和密钥替换机制;在密钥预分配阶段,通过六边形网格的部署方式在提高了网络的连通率;在密钥建立阶段,通过网络节点的标识信息,将节点对的密钥替换成通信密钥,并删除原密钥。理论分析和实验数据表明:与经典的随机密钥预分配方案相比,该方案在提高网络连通率的同时大大增强了网络节点的抗捕获攻击能力。
In order to further enhance the connectivity and security of wireless sensor networks (WSNs), a key management scheme using hexagon deployment and communication key for wireless sensor networks is proposed. In the key predistribution phase, hexagonal grid deployment improve the connectivity rate of network. In key establishment phase, the node key is replaced by communication key using the identification information and remove the original key. Theoretic studies and figures of simulation show that the proposed scheme provides better performance in connectivity and security than classical random key pre-distribution scheme.