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针对Blom密钥预分配方案存在安全阈值的问题,提出一种面向无线传感网络的基于分组的双空间密钥预分配方案.将整个网络划分为多个逻辑组,组内节点服从以部署位置为中心的二维高斯分布,建立分组部署模型,组内节点和组间节点在不同的密钥空间上建立共享密钥.从全局连通性、抗毁性和有效性三个方面对方案进行理论和实验分析,结果表明本文方案在解决Blom方案安全阈值问题的同时,既提高了网络的抗毁能力,又保证任意两个节点能够直接建立共享密钥.
Aiming at the problem of the existence of security threshold for Blom key pre-distribution scheme, this paper proposes a packet-based dual space key pre-distribution scheme for wireless sensor networks. The whole network is divided into multiple logical groups, As the center of two-dimensional Gaussian distribution, the establishment of a group deployment model, group nodes and group nodes in different key space to establish a shared key.From the perspective of global connectivity, survivability and effectiveness of the program theory The experimental results show that the proposed scheme not only improves the resilience of the network but also ensures that any two nodes can establish a shared key directly while solving the security threshold of Blom scheme.