Key Distribution Method for Enhancing Secure Performances in Dynamic Filtering-Based Wireless Sensor Network

Abstract

Sensor nodes in many sensor network applications are typically deployed in open, wide, and unattended environments. In this environment, sensor nodes are easily compromised by adversaries. The adversary can use compromised nodes to inject a fabricated data into the sensor network. The injected fabricated data drains energy of sensor nodes and causes false alarms. A dynamic en-route filtering scheme is proposed to detect and drop the injected fabricated data. In this scheme, authentication keys used to verify event reports are redistributed to enhance the detection power. It is important to decide when to disseminate authentication keys since this phase consumes much energy. We propose a key distribution method to enhance detection power and reduce energy consumption. Simulation demonstrates that the proposed method is resilience and energy efficient.