Polynomial Subset Based Efficient Key Management for Lightweight Devices Networks

Wireless Sensor Networks (WSNs) is highly vulnerable to security attacks because of resource-constrained wireless devices. Complex and resource intensive security schemes are infeasible and reduce the network lifetime. We have explored polynomial distribution based key establishment schemes and identified an issue that the resultant polynomial value is either storage intensive or infeasible when large values are multiplied, and it becomes more costly when these polynomials are regenerated dynamically after each node join or leave operations. To reduce the computation overhead on a cluster head, we have proposed XOR based key management scheme. Simulation scenarios are performed using NS 2.35 to validate the results for storage, communication, latency, energy, and polynomial calculation costs. Proposed XOR based calculation reduces 65% computing cost. The reduction of memory overheads is from p-bits to m-bits where m