高速移动场景中人机混编通信物理层安全技术  

Research on Physical Layer Security Technology for Human-computer Mixing Communication in High-speed Mobility Scenario

作　　者：李为 鲁信金[2,3] 仲健 陈继林 何龙 LI Wei;LU Xinjin;ZHONG Jian;CHEN Jilin;HE Long(Zhiyuan Research Institute,China South Industries Group Corporation,Hangzhou,310012,Zhejiang,China;College of Electronic Science and Technology,National University of Defense Technology,Changsha 410000,Hunan,China;State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System,Luoyang 471003,Henan,China)

机构地区：[1]兵器装备集团智元研究院,浙江杭州310012 [2]国防科技大学电子科学学院,湖南长沙410000 [3]电子信息系统复杂电磁环境效应国家重点实验室,河南洛阳417032

出　　处：《兵工学报》2024年第S01期322-330,共9页Acta Armamentarii

摘　　要：针对高速移动场景中人机混编通信模式下的安全问题展开研究,提出基于时延多普勒(Delay Doppler, DD)域密钥提取的正交时频空—物理层加密(Orthogonal Time Frequency Space-Physical Layer Encryption, OTFS-PLE)方法。该方法充分利用快时变信道在DD域中的稀疏性,高效准确地估计信道路径的增益、多普勒频移和时延大小,生成安全可靠的初始密钥,再通过Tent序列将初始密钥扩展成加密密钥,根据密钥对OTFS的星座点进行相位扰乱,实现高效的加解密。该方法解决了高速移动场景人机混编通信中的密钥提取难的问题,能生成可靠的密钥并实现人机混编系统安全高效的加密通信。The security issues in the human-computer hybrid communication mode in high-speed mobile scenarios are investigated.An orthogonal time frequency space-physical layer encryption(OTFS-PLE)method based on delay Doppler(DD)domain key extraction is proposed.The method fully utilizes the sparsity of fast time-varying channels in the DD domain to efficiently and accurately estimate the gain,Doppler shift and delay magnitude of the channel path to generate a secure and reliable initial key.Secondly,the initial key is expanded into an encryption key through a Tent sequence,and the phase scrambling of the constellation points of OTFS is made according to the key to realize efficient encryption and decryption.This method is used to solve the problem of difficult key extraction in human-computer mixing communication in high-speed mobile scenarios,generates the reliable keys and realizes the secure and efficient encrypted communication in human-computer mixing systems.

关 键 词：物理层加密 高速移动场景 机混编通信模式 正交时频空 

分 类 号：TN929.5[电子电信—通信与信息系统]