WSAN网络密钥管理模型的研究

无线传感器和反应器网络（wireless sensor and actor network．WSAN）由三种具有不同级别能力和作用的节点构成，节点的异构性导致单纯使用一种安全模型将无法满足不同节点对性能和安全性的要求。为此，本文首次提出了一种复合式的安全模型，根据节点的能力和作用将WSAN网络分为两层，不同层通过应用不同的安全机制，实现不同级别的安全服务。另外，本模型通过多种方式降低系统开销，力求达到安全和性能的平衡。

RESEARCH ON KEY MANAGEMENT MODEL FOR WSANS

Wireless Sensor and Actor Networks (WSANs) consist of three types of nodes with different capabilities and functions. Because of these heterogeneities, current network security mechanisms would be hard to satisfy the security/cost requirements of all types of nodes. In this paper, we propose an integrated security approach, which splits the WSAN network into two layers according to nodes' functionalities and capacities. Different security mechanisms are provided to achieve the security services at corresponding levels. Furthermore, several methods are also used to reduce the system costs.