无线传感器网络EMSR协议的安全性分析

针对目前无线传感器网络密钥管理方案存在的安全问题，给出了一种可证明安全的无线传感器网络的认证密钥建立方案(EMSR)，使用公钥证书实现网络节点的双向认证，同时产生双方共享与相互控制的会话密钥，有效地防止了纯粹使用对称加密机制产生的认证问题。在CK安全模型下，对EMSR协议进行了安全性证明，并对几种基于公钥机制的密钥建立方案进行了性能分析。结果表明，EMSR方案具备CK安全模型下相应的安全属性以及支持资源受限的网络节点的优势，符合传感器网络的通信要求。

Analysis on Security of EMSR Protocol in Wireless Sensor Network

According to the security problem existing in current key management scheme of wireless sensor network, an authenticated key establishing scheme (EMSR) which is used in wireless sensor network and can be proved to be safe is put forward. By applying public key certificate, the mutual authentication is realized. At the same time, the authentication problem caused by the absolute use of symmetric encryption mechanism can be efficiently avoided. In CK security model, security proof for EMSR protocol has been carried out and the performance of key establishing scheme based on several kinds of public key mechanism has been analyzed. The results of security proof and performance analysis show that the EMSR has the advantages on the responding security properties in security model and supporting the net node whose resources are limited, and satisfies the communication requirements of wireless sense net.