无线传感器网络密钥预分配与动态分配策略

为了实现无线传感器网络中的安全通讯,需要对传感器结点间传递的信息进行加密。由于受每个传感器结点自身资源的限制,传统网络中使用的密钥分配策略,并不适用于无线传感器网络。文章提出了一种基于结点位置对密钥进行预分配和动态分配相结合的密钥分配策略,通过构造一棵密钥管理树实现了分布式和集中式密钥管理的结合。应用这一策略构建的传感器网络其安全性和连通性有明显提高。

The Scheme of Key Pre-distribution and Dynamic Distribution in Wireless Sensor Networks

In wireless sensor networks it is necessary to encrypt messages sent among sensor nodes to achieve communication security.Due to resource constraints on sensors,many key management techniques used in traditional networks are not suitable for wireless sensor networks.We proposes a key pre-distribution and dynamic distribution scheme based on deployment knowledge of the sensors that constructs a key management tree to achieve the distributed and integrated key management.The scheme can substantially improve a network's security and connectivity.