Studies on secure and efficient key predistribution schemes for wireless sensor networks

Abstract

The explosive growth of wireless communication has enabled the development of low cost and low power multifunctional sensors Composing these sensor nodes into sophisticated computational and communication infrastructures to form wireless sensor networks is a unique challenge to modern technology Wireless sensor network is an emerging field with variegated applications extending from domestic to military Many of its applications demand them to be placed in hostile environments thereby exposing them to numerous attacks Thus security plays a pivotal role in wireless sensor networks especially when the data to be handled by the network is sensitive The processing and energy limitation of the sensor nodes pose a greater challenge and make the implementation of complex security measures impossible A variety of key pre distribution schemes were proposed in the literature to provide security in wireless sensor networks Inspite of various improvements in the key predistribution schemes the nodes newlineare still getting compromised and a separate mechanism is not provided to filter out the malicious node The main objective of this thesis is to propose new techniques to improve the performance of key predistribution schemes using clustering approach and cluster reformation introducing cell splitting in hexagonal deployment knowledge based schemes using Elliptic Curve Cryptography for key generation newline