无线传感器网络中一种基于行为可信的访问控制机制

Access Control Mechanism Based on Behaviour Trust in Wireless Sensor Networks

访问控制是无线传感器网络的一种重要应用,已有研究工作大多是通过相邻传感器之间的密钥交换来实现。从传感器行为的空间相关性和时间相关性入手,提出了一种基于相似度的以局部检测为主的分布式传感器行为可信的访问控制机制。该机制通过检验传感器本地采样值构成的时空相似度与传感器行为随机过程统计特征的符合程度来实现行为信任的访问控制。模拟仿真试验表明,该机制可以减少传感器之间的数据交换,当网络中10%的传感器存在不安全行为时,该模型可以检测到95%的不可信传感器。

Access control is an important application of wireless sensor networks. Previous works are implemented by exchanging key among neighboring sensors. Considering that in many cases, an sensors behaviour is both spatially and temporally correlated, this paper proposed a distributed and localized behaviour trust mechanism based on similarity, this mechanism implements behaviour trust access control by using statistical hypothesis test for matching the reading sequence of sensors and statistical characters of the behaviour. The simulation results show that the mechanism can reduce the network traffic,can detect as much as 93% of the not trusty sensors when 10%of sensors are not security.