一种层次型无线传感器网络安全认证方案

Security and authentication scheme for hierarchical wireless sensor networks

在阐述无线传感器网络及其安全问题的同时,重点对层次型无线传感器网络安全认证方案展开研究.先对无线传感器网络安全框架协议SPINS进行分析,指出其不足之处.为进一步提高网络安全性,借鉴网络安全技术(如IPSec,SET等)中综合采用对称密码技术和非对称密码技术的思想,将证书应用于传感器网络中.根据传感器节点低功耗的特点,对其证书结构进行重新设计,通过重构的证书实现了传感器节点的身份认证和数据源认证.理论分析和仿真实验结果表明,本方案与SPINS方案相比,虽然使网络性能有所降低,但使网络安全性能有很大提高,能够有效地解决层次型无线传感器网络安全认证问题.

To research the hierarchical wireless sensor network and its security,the security frame protocol SPINS is first analyzed and its deficiency is pointed out.In order to further enhance network security,the scheme proposed uses the thought of the network security technology(for example IPSec,SET and so on) to synthetically adopt the symmetrical and asymmetrical cryptology techniques for reference,and applies the certificate to the sensor networks.Because of the low-powered property,the certificate structure of the sensor nodes needs to be redesigned.By means of the redesigned certificate,the scheme can perform identity and data origin authentication.Finally,a security and performance analysis is provided based on the theory and simulation experiments.The conclusion shows that the scheme greatly promotes the security but decreases the network performance in comparison with SPINS.It can effectively solve the secure problems for the hierarchical wireless sensor network.