Fuzzy Based Key Re-distribution Period Determination Method in Wireless Sensor Networks

摘要

Wireless sensor networks (WSNs) are composed of nodes with limited resources in open environments. Nodes are placed in an open environment that will eventually be exposed to an adversary., An adversary can easily access security information such as the authentication key using data authentication. An adversary can use compromised sensor nodes to inject false reports to the WSN. If undetected, these false reports are forwarded to the base station. Such attacks by compromised sensor nodes result in false alarms and the depletion of the limited amount of energy in battery powered sensor nodes. The Dynamic En-routing Filtering (DEF) scheme can detect and drop false reports during the forwarding process. In DEF, the authentication key re-distribution period is important to detect false reports and save network energy. In this paper, we present a fuzzy-based authentication key re-distribution period determination method for DEF. The fuzzy-based method can prevent this problem and provide energy savings. We evaluated the performance of the proposed method via simulation.