Research Of Information Flow-based Attacks And Countermeasures Designs On Civilians UAVs

With the rapid technology development of unmanned aerial vehicle(UAV),the UAV technology has been widely used in video recording,commercial performance,expressage delivery and other civilian fields.In recent years,many accidents of civilian UAV under attack have been happened.Various security risks of civilian UAV are gradually exposed.The research of civilian UAVs is relatively scarce at present,in order to ensure the security of civilian UAVs in all kinds of fields,the paper is devoted to investigate the information flow-based attacks and countermeasures designs on civilians UAVs,and intend to improve the security of the civilian UAVs from both the attack and defense sides.Firstly,UAV control link spoofing attack technology is researched.The model of this kind of attack is presented which has two key steps of information analysis and security flaw recognition,and this model is verified by analyzing and reappearing an attack instance.Secondly,an UAV remote protocol reverse engineering method based on remote data is presented,which includes four steps:data alignment,field separation,data characteristic analysis and flight record data import.Protocol reverse analysis using real data from physical experiments are completed,and the results proved the feasibility of this method in practical application.Later,an UAV remote data protection method is presented based on encryption algorithms.The security and performance of AES,PRESENT and RC4 are analyzed and tested.The effectiveness of this method is proved by theoretical analysis and simulation experiments.Finally,a GPS spoofing attack technology based on Software Defined Radio is researched.The influences to the attack results caused by the clock stability of Software Defined Radio,the multimode positioning strategy of the targeted UAV and the satellite navigation information used in spoofing signal generation or other factors are tested by realistic experiments.The innovation of this paper is that various information flow-based attacks and countermeasures designs on civilians UAVs are researched by using methods such as theoretical analysis,simulation test and realistic experiments.These attacks and countermeasures could apply to practical applications effectively.These research could not only help the UAV manufacturers to analyze existing attack instances or discover existing security flaw,but also provide theory basis or design ideas to countermeasures designs,which could improve the security of civilian UAVs in our country.Meanwhile,these research could also benefit the research of relative technology such as UAV flight area regulation.