无线通信调制信号的信息安全风险分析  

Modulated Signal Information Security Risk Analysis in Wireless Communications

作　　者：魏冬[1] 刘博 梁莉莉[1] 李敏[1] 

机构地区：[1]中国科学院信息工程研究所,北京100093 [2]国家保密科技测评中心,北京100044

出　　处：《信息安全研究》2016年第2期143-149,共7页Journal of Information Security Research

基　　金：国家自然科学基金项目(61501458)

摘　　要：无线通信已深入到人们工作和生活的各个方面,其安全性问题不容忽视.由于无线通信物理信道的开放性,承载着重要信息的调制信号完全暴露在自由空间中,而当前的无线通信系统却十分缺少物理层方面的防护措施,攻击者可以利用盲信号处理技术恢复出信号的重要信息,从而使得合法通信遭受巨大威胁.围绕无线通信中调制信号信息安全风险问题展开分析,首先介绍了非协作通信环境中调制信号的重要信息的恢复方法,然后通过仿真实验对其安全风险进行了定性评估.Wireless communications have gone deep into every aspect of people’s work and lives, but its security cannot be overlooked. Due to the openness of the physical channel in wireless communications, modulated signals carrying important information are completely exposed in free space. However,there are few protective measures for the modulated information at the physical layer in current wireless communication systems so that an attacker can use blind signal processing technique to recover important information of signals and make legal communications suffer huge security threats. The paper focuses on the modulated signal information security risk analysis in wireless communications. Recovery methods of important modulated signal features in non-cooperative communications,including instantaneous features and constellation diagram, are introduced first, then qualitative risk assessments for the key features of modulated signals are made by simulating analysis.

关 键 词：无线通信 物理层安全 非协作通信 盲信号处理 定性评估 

分 类 号：TN918[电子电信—通信与信息系统]