基于国密算法的伪卫星导航信号认证方法研究  

Research on pseudo satellite navigation signal authentication method based on national cryptographic algorithms

作　　者：陈思元 巴晓辉 蔡伯根[1,2,3] 姜维 王剑 CHEN Siyuan;BA Xiaohui;CAI Bogen;JIANG Wei;WANG Jian(School of Electronics and Information Engineering,Beijing Jiaotong University,Beijing 100044,China;State Key Laboratory of Rail Traffic Control and Safety,Beijing Jiaotong University,Beijing 100044,China;Beijing Engineering Research Center of EMC and GNSS Technology for Rail Transportation,Beijing 100044,China)

机构地区：[1]北京交通大学电子信息工程学院,北京100044 [2]北京交通大学轨道交通控制与安全国家重点实验室,北京100044 [3]北京市轨道交通电磁兼容与卫星导航工程技术研究中心,北京100044

出　　处：《系统工程与电子技术》2023年第12期4021-4029,共9页Systems Engineering and Electronics

基　　金：北京交通大学人才基金(2022XKRC003);国家自然科学基金“联合基金项目”(U1934222);国家自然科学基金(62027809,U2268206)资助课题。

摘　　要：全球导航卫星系统(global navigation satellite system,GNSS)有诸多优势,但在一些有物理阻隔或电磁干扰的领域,GNSS的可用性、可靠性、精确性出现明显不足,由此可以使用一种基于地面设备的伪卫星系统进行导航定位服务。伪卫星信号体制细节公开,使得接收机易受到多种欺骗干扰的攻击。为了使信号传输更加安全,提出一种使用导航电文加密方法的信号防伪认证方案,并从安全性、可靠性和认证效率几方面对该方案进行评估。分析表明,所提方案能在保证较好的认证实效的同时,维持较低的通信成本与计算成本,解决了伪卫星系统缺乏认证机制、存在安全隐患的问题。Global navigation satellite system(GNSS)has many advantages,but in some civil and military fields with physical obstruction or electromagnetic interference,the availability,reliability and accuracy of GNSS are obviously insufficient.Therefore,a pseudo-satellite system based on ground equipment can be used for navigation and positioning services.Pseudo satellite is vulnerable to various spoofing attacks since the signal structure details is open to be accessed.In order to guarantee the signal transmission with more security,a signal anti-fake authentication scheme using navigation message encryption method is presented.The proposed scheme is evaluated by security,reliability and authentication efficiency.Experimental results show that the proposed scheme guarantees authentication effectiveness with low communication and calculation costs,which can solve the problems of pseudo satellite systems’lacking of authentication mechanism and potential security risks.

关 键 词：伪卫星 数字签名 导航电文认证 国密算法 

分 类 号：TN967.2[电子电信—信号与信息处理]