A Novel Method for Synchronization Parameters Automatic Extraction in Computer Electromagnetic Eavesdropping

Xu, Ya‐Qiong

doi:10.1049/cje.2019.01.001

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2021

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“…However, reconstruction of the image needs complex information processing technology. The special receivers are uncommon and expensive [ 15 , 16 ] . So the evaluation methods were proposed [ 17 , 18 ] .…”

Section: Introductionmentioning

confidence: 99%

Method for Evaluating Digital Video Electromagnetic Information Leakage from Video Cable

Wang

Qiu

Tian

2021

Chinese J of Electronics

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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.

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