摘要
随着信息时代的发展,无线通信技术的作用和地位在人类生活中日益突出。但是,由于无线信道自身的开放性和广播性,信息传输的保密性和安全性一直是通信领域关注和研究的热点问题。如何在保证误比特率不提高的前提下,提升通信系统的安全保密性能具有十分重要的意义。在物理层对传输信息进行加密,是一种有效提高信息保密性的手段。因此,介绍一种利用单向hash函数产生密钥矩阵的物理层加密方法,以达到提高通信系统安全性的效果。通过对加密信息的星座图和接收端的误比特率分析,该方法对信息的幅度和相位信息具有很好的隐藏作用,在保证安全性的同时保持了较高的通信可靠性。
With the development of information age,the role and status of wireless communication technology is increasingly prominent in human life.However,due to the openness and broadcasting of wireless channel,the confidentiality and security of information transmission has always been a hot issue in the field of communication.How to improve the security performance of communication system without increasing the bit error rate is of great significance.Encrypting the transmission information in the physical layer is an effective way to improve the confidentiality of information.Therefore,in order to improve the security of communication system,this paper introduces a physical layer encryption method which uses unidirectional Hash function to generate key matrix.Through the analysis of the constellation of encrypted information and the error bit of the receiver,this method can hide the amplitude and phase information of the information well,and keep the high communication reliability while ensuring the security.
作者
于敬民
高媛媛
YU Jing-min;GAO Yuan-yuan(School of Communication Engineering,Army Engineering University of PLA,Nanjing Jiangsu 210007,China)
出处
《通信技术》
2020年第6期1481-1487,共7页
Communications Technology
