Trust Based Partially Distributed Key Management Scheme for Aeronautical Ad Hoc Networks

In Aeronautical Ad Hoc Network (AANET), attacks are often diverse, and a lack of preventive measures may cause serious losses. Therefore, compared with traditional MANET, AANET has higher security requirements. In this paper, we propose a trust-based partially distributed key management scheme to consider both capability and integrity trust of network. Capability trust reflects the link state of the routing path and the metric is used to choose reliable intermediate nodes for transmission. The integrity trust distinguishes compromised nodes from well-behaving nodes. The key management scheme only issues certificates to the well-behaving nodes to verify their legitimacy. We perform simulations and compare the proposed scheme with a composite trust-based public key management scheme (CTPKM). The simulation results demonstrate the performance advantages of our scheme in terms of overhead, packet delivery ratio and evaluation accuracy.