English

Abstract

ABSTRACT:In many wireless sensor network (WSN) applications uses hierarchical routing protocol for routing sensed data to the sink, among them LEACH is the first and most widely used hierarchical distributed clustering protocol in WSN. Security is important in wireless sensor networks as they are prone to various network threats and intrusion. In LEACH, Nodes decides to join a cluster head based on Received Signal Strength (RSS) of receiving HELLO packets from CHs making it vulnerable to HELLO Flood attack. Detection of HELLO Flood attack can be done either cryptographic approach which are less suitable in terms of memory and battery power or non-cryptographic which involves sending the test packet for detection which increases communication overhead as the energy required for transmission of the packet is far more than the energy required for processing/calculation. Based on these facts a non-cryptographic and cryptographic solution for detection HELLO Flood attack is proposed in this paper in which by considering RSS and distance calculation and by comparing both test packet approach is done hence the number of times the test packet is transmitted is greatly reduced and providing security by using location dependent key(LDK) management scheme where it involves loading random set of keys to the nodes prior to deployment, and also LDK doesn’t require any knowledge of node deployment, eventually provides better connectivity and containment of node compromise.