Method for Evaluating Digital Video Electromagnetic Information Leakage from Video Cable  

作　　者：WANG Sen QIU Yang TIAN Jin 

机构地区：[1]AECC Aero Engine Control System Institute,Wuxi 214100,China [2]Electromagnetic Compatibility Laboratory,Xidian University,Xi'an 710071,China

出　　处：《Chinese Journal of Electronics》2021年第5期978-985,共8页电子学报（英文版）

摘　　要：Electromagnetic emissions from electrical information equipment may contain useful information and lead to information leakage.In order to detect the electromagnetic information leakage of digital video cable,a rapid testing method for computer video information leakage detection without reconstructing the displayed image is proposed.In this method,the electromagnetic radiation spectrum of typical image transmitted by HDMI cable is simulated.Then the electromagnetic radiation spectrum of the computer when transmitting the same image as the typical image is obtained by conduction and radiation EMC test methods.Finally,the correlation between the spectrum of simulation and the test spectrum is analyzed,and the correlation coefficient is used to judge whether the computer has produced the electromagnetic leakage of video information.The analysis and test results show that when the correlation coefficient is greater than 0.5,the electromagnetic leakage of computer video information can be judged.

关 键 词：Information security Compromising emanation Electromagnetic leakage Digital video information 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]