Drill System Based Hierarchical Trust Calculation to Detect Selfish Nodes in Wireless Sensor Network
Wireless Sensor Networks applications are numerous in today's trend. Sensing data, aggregating and forwarding data are prime functions in a sensor network. Sensor nodes have serious constrain like energy, memory, battery, computational power. One of the main issues in sensor network is that nodes get compromised or selfish which results in performing various attacks and malfunctioning of network. Trust is one of the main security mechanisms to provide security. To calculate trust of a node and identify nodes as malicious takes quite amount of time and parallel sensed data may be dropped or altered. To overcome this issue, the authors propose a drill based trust calculation-using concept called DTS Commands (Drill Test Sending) integrating with double cluster head.