Abstract
ABSTRACTThe false data injected by the compromised sensor nodes in heterogeneous wireless sensor networks are not only a threat to data integrity but also consume bandwidth and power unnecessarily. The existing mechanisms for eliminating the injected false data are carried out with a fixed set of aggregator nodes. This causes battery drain at the aggregator nodes, leading to reduced network lifetime. Hence, it is necessary to reduce the battery drain by changing the aggregator nodes at regular intervals. The periodic change of aggregator nodes introduces the problem of pair-wise key establishment among the sensor nodes. This paper aims at eliminating the injected false data in heterogeneous wireless sensor networks. It also addresses the issue of battery drain at the aggregator nodes by periodically selecting the aggregator nodes based on location, exploiting the heterogeneity of the sensor nodes in the network. The problem of pair-wise key establishment is resolved by using a suitably modified cryptographic scheme based on Jacobian elliptic Chebyshev rational map. This modification is due to the fact that the original scheme is easily breakable.
Published Version
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