【摘要】 随着无线传感器网络的广泛应用,密钥管理作为其安全措施的重要组成部分越来越被重视。无线传感器节点资源受限,需在保证安全性的前提下,减少密钥管理的交互步骤、交互数据量以及算法运算量。组合公钥技术的密钥管理相对简单,对无线传感器节点的存储容量和计算能力要求较低,很适合无线传感器网络的密钥管理。基于CPK的无线传感器网络密钥管理方法采用离线分发、在线协商和异步更新的方式管理密钥。最后,从适用性、安全性和效率等方面对该方法进行了分析。更多还原

【Abstract】 With the widespread application of wireless sensor network, key management as an integral part of its security measure receives more and more attention. The resource of wireless sensor nodes is limited,so it is necessary to reduce the interactive steps and data volume of key management, as well as the computational complexity of algorithm on the premise of guaranteeing security. Key management in combination with public key technology is relatively simple, and requires less storage capacity and computing power of wireless sensor nodes, and thus is very suitable for key management of wireless sensor networks. The CPK-based key management for wireless sensor network adopts the mode of offline distribution, online negotiation, and asynchronous update to manage keys. Finally, the proposed method is analyzed and discussed in terms of applicability, safety and efficiency.更多还原