计算机键盘电磁泄漏研究综述

摘要

计算机已经成为日常办公不可缺少的一部分,而计算机设备电磁泄漏存在巨大的安全隐患,本文针对计算机键盘的电磁泄漏问题进行研究.首先,从近年来国内外学者对计算机键盘的攻击、还原按键信息及防护措施三个方面的研究成果进行总结;其次,由键盘的结构及其信息传输模型出发阐述了键盘的电磁泄漏原理,并对有线键盘和无线键盘的电磁泄漏方式进行总结与对比;最后,分别给出了有线键盘和无线键盘电磁泄漏的具体防护措施,并对未来发展提出展望.%Computer has become an indispensable part of daily office, and there is a huge potential safety hazard in the electromagnetic leakage of the computer system. This paper introduces the electromagnetic leakage problem of computer keyboards. Firstly, the author summarized the research results of computer keyboard attack, how to restore key information and the protection measures in recent years by domestic and foreign scholars. Secondly, the principle of electromagnetic leakage of the keyboard is expounded by the structure of the keyboard and its information transmission model. The electromagnetic leakage of wired keyboards and wireless keyboards is summarized and compared. Finally, specific protective measures are given, the future development is proposed.