【作者】 张南； 吕英华； 王宜颖； 杜玉雷；

【Author】 ZHANG Nan;LV Ying-hua;WANG Yi-ying;DU Yu-Lei;School of Electronic Engineering,Beijing University of Posts and Telecommunications;

【机构】 北京邮电大学电子工程学院；

【摘要】 对配有液晶显示器(LCD)的台式计算机的伴随电磁发射进行了测试研究,在分析大量测试数据的基础上,提出了用于测定计算机视频信息泄漏风险的模板评估方法。确定了LCD台式计算机视频信号的伴随电磁发射泄漏源,分析了视频电磁泄漏信号的时域和频域特征以及原始视频信号与视频电磁泄漏信号的认知关系,最后进行了由视频电磁泄漏信号重构原始视频信息的试验,得到了较好的重构效果。更多还原

【Abstract】 An exploratory test of compromising emanation and source locating in LCD computer was performed according to this paper.Based on the analysis of large amounts of data,a typical assessment method used to estimate the risk of computer video information leakage is proposed.We determined the leaking source of near-field radiation produced by video signal.The paper also analyzes the characteristics of the intercepted electromagnetic signals in time and frequency domain,the cognitive relationship between the original video signal and the intercepted electromagnetic signal.Finally,the screen video content is reconstructed.更多还原