Research On Secure Clustering And Group Key Agreement Algorithm For UAV Ad Hoc Network

With the increasing emphasis on the application of UAV,the research and development of Multi-UAVs Cluster is developing rapidly,the concept of UAVNET(Unmanned Aerial Vehicle Network)is also coming into being.UAV network is widely applied,and it can undertake investigation,war information collection and other tasks.Sometimes it needs to work in sensitive or hostile force environment,so it faces complex security threats from link layer and network layer.The security mechanism in the traditional network is not suitable for the dynamic UAV network with limited computing and communication capability because of its complexity and network architecture.The aim of this paper is to propose a secure routing protocol and key agreement protocol for UAV Ad hoc network with hierarchical structure.The main innovative work is as follows:An UAV network secure cluster head election algorithm based on trust value is proposed.The secure routing protocol of hierarchical UAV network is studied.A K-Means++ algorithm considering the bandwidth of node communication and suitable for high dynamic UAV network is proposed.Improve the Bayesian model and introduce the concept of recommendation trust value,propose a secure cluster head election algorithm which can quickly detect and remove malicious nodes,within the limited computing capacity of UAV Ad hoc network’s node.This chapter gives a simulation verification of the protocol and compares it with the traditional hierarchical security routing protocol.A group key agreement protocol facing clustered UAV network is proposed.First,the traditional ElGamal key agreement protocol is improved,and a ECC-GKA key negotiation protocol based on elliptic curve encryption mechanism is proposed.Secondly,considering the high dynamic characteristics of UAV nodes,which need to join or quit the original clustering.In this paper,we design a fast join and exit algorithm based on the negotiation framework of ECC-GKA,to ensure the efficiency and stability of the key agreement process in UAV cluster network.The correctness and security of the protocol are proved,and the simulation environment of Python(x,y)is used to simulate the key negotiation process of this paper.