Development of Hybrid Algorithm for Masquerading Sink Node Location in WSN

Abstract

A wireless sensor network (WSN) is an independent network comprising of huge number of sensor motes and base stations (BS). Security is a major concern in military forces and border surveillance. BS which collects information from sensors has become the main target of attack for intruders. Anonymous intruder eavesdrops into network, analyzes the radio patterns to get contextual information, and can find where the BS location is. Attacker can destroy BS or alter its behavior which results in malfunctioning or complete failure of the entire network. In this paper, a hybrid algorithm for the BS anonymity has been proposed which provides protection for the sink node against adversaries. By making the BS anonymous in the network, it will be difficult for any intruder to find the location of the BS. The proposed algorithm is developed and simulated in MATLAB. The results infer that the anonymity of BS is independent of traffic volume and the algorithm proposed is efficient with varying locations of the sensor nodes. The anonymity value of BS for each topology is below 0.04. This infers that for the topology simulated an intruder conducting the traffic pattern analysis of WSN considered have a less than 4% probability of detecting the BS on the first trail when searching for physical location for the BS.