Key Management Schemes in Wireless Sensor Networks

Key establishment in sensor networks is a challenging problem because existing security schemes are unsuitable for use in resource constrained sensor nodes, and also because the nodes could be physically compromised by an adversary. In this paper two key establishment scheme are presented using the framework of pre-distributing a random set of keys to each node. One is the random-pairwise key scheme, which perfectly preserves the secrecy of the rest of the network when any node is captured, and also enables node-to-node authentication(EG SCHEME) and other is EG SCHEME with deployment knowledge) and going to compare the basic scheme(EG SCHEME) with the deployment model(EG SCHEME with deployment knowledge).