Distributed Key Management Scheme Based on ECC for Heterogeneous Sensor Networks

Routing-driven key management schemes integrated with centralized routing for heterogeneous sensor networks (HSNs) mainly have two shortcomings: high communication energy consumption, and large storage requirements. To address the above problems, we propose a distributed key management scheme for HSNs. Taking advantage of distributed routing protocol, the scheme achieves to reduce communication cost and improve adaptive capacity. In the key agreement process, the scheme utilizes Identity-based Encrypt to reduce storage requirement, implement message authentication, and enhance key agreement efficiency. Comparison and theory analysis show that the proposed scheme the scheme has lower storage requirement and communication energy consumption, and better security and adaptive characteristic.