Double hash function scheme in wireless sensor networks

Wireless sensor networks are a new class of distributed systems that are an integral part of the physical space they inhabit. Key distribution plays an important role in wireless sensor networks. In WSN, node capture attack is the most series attack. The aim of this paper is to improve the resistance against the node capture attack. So a double hash function key pre-distribution scheme is used to stop an adversary to get information of non-compromised sensor nodes from the compromised sensor nodes and the deployment model, is based on hexagonal to improve the local connectivity. The proposed scheme provides the best resilience against sensor nodes capture and the probability of links between any sensor nodes are compromised is zero after pair wise keys establishment.