Key Management Scheme Based on Threshold for Heterogeneous Wireless Networks

Key management is central to ensuring privacy protection in heterogeneous wireless networks. Following the analysis of existing distributed trust model to heterogeneous wireless networks, this paper proposes an effective key management scheme based on threshold. The scheme achieves two-way authentication between the nodes, with strong capability of anti-counterfeiting attack and anti-replaying attack. It can not only revoke malicious nodes, but also resist denial of services. Simulation results show the improvements achieved by our proposal in terms of effectiveness and survivability to different attacks. The scheme is suited to heterogeneous wireless networks based on cellular networks and ad hoc networks.