一种无线传感器网络的密钥管理方案

目前很多无线传感器网络的应用是建立在群组式通讯的模式之上，如何建立一个用以加密群组通讯的组密钥，来防范攻击者窃听无线传感器网络上的通讯，近年来引起广泛关注。为了在有限资源的无线传感器网络能安全进行群组通讯，本文只使用对称加密算法和单向哈希函数提出了一种具有有效性和扩充性的组密钥管理方案，并可满足前向和后向安全性。与目前现有的群组密钥相比，方案不仅具有较好的效率，并且更适合于无线传感器网络。

Key management scheme of wireless sensor networks

Many applications of wireless sensor networks are based upon a group communication model. How to establish a group key for encrypting group communication is therefore becoming an important concern to prevent an attacker from eavesdropping communications in wireless sensor networks. To support secure group communications in resource constrained wireless sensor networks, We propose an efficient and scalable key management scheme which only uses symmetric cryptographic algorithms and hashing function. This scheme can achieve forward and backward security. This scheme provides better efficiency and is more suitable than previous group key management schemes for wireless sensor networks.