DocumentCode :
2988222
Title :
Analysis and Measurement on the Electromagnetic Compromising Emanations of Computer Keyboards
Author :
Wang, Litao ; Yu, Bin
Author_Institution :
Zhengzhou Inf. Sci. & Technol. Inst., Zhengzhou, China
fYear :
2011
fDate :
3-4 Dec. 2011
Firstpage :
640
Lastpage :
643
Abstract :
Keyboard is the main input device for computer systems. Electromagnetic waves will be emitted while the keyboards´ working since they contain electronic components. These waves may generate electromagnetic interference, do harm to the operator´s health and even reveal keystroke information thus bring information security problems. Focusing on the emanations concerned with information security, two different means that might compromise the keystroke information are analyzed in this paper. Data and clock signals that transfer the keyboard scan code to the computer are of critical importance. Besides, the ordinal scan routine of the computer keyboards will give out the column information of the pressed key. Then, a measurement experiment is designed to test the emanations of the keyboard. It is found that even the shielded keyboard will compromise the keystroke information, which indicates the keyboard with shielding measures do not give enough protection against information leakage via electromagnetic emanations.
Keywords :
biological effects of radiation; electromagnetic shielding; health and safety; keyboards; security of data; clock signals; computer keyboards; computer systems; electromagnetic emanation measurement; electromagnetic interference; electromagnetic waves; electronic components; information leakage; information security problem; input device; keyboard scan code; keystroke information; operator health; ordinal scan routine; shielding measures; Antenna measurements; Clocks; Computers; Electromagnetics; Keyboards; Security; Transmission line measurements; electromagnetic emanations; information security; keyboards; shielding;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computational Intelligence and Security (CIS), 2011 Seventh International Conference on
Conference_Location :
Hainan
Print_ISBN :
978-1-4577-2008-6
Type :
conf
DOI :
10.1109/CIS.2011.146
Filename :
6128202
Link To Document :
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