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2013-07-01

Novel Method to Detect and Recover the Keystrokes of Ps/2 Keyboard

By Yu-Lei Du, Ying-Hua Lu, and Jin-Ling Zhang
Progress In Electromagnetics Research C, Vol. 41, 151-161, 2013
doi:10.2528/PIERC13042302

Abstract

Computer keyboards are often used to transmit confidential data such as passwords. The sensitive information such as keystrokes could be recovered by using the electromagnetic (EM) waves from the electronic components of the keyboard. In this paper, we have investigated the information leakage on the ground line of the PS/2 serial cable due to crosstalk and radiative coupling. The coupling principles are analyzed firstly. And then, through the experiments we found that the signals of keystrokes could leak to the ground line network which could then be detected on the other power outlets whose share the same electric line. Lastly, the eavesdropping experiments demonstrated that the keystrokes could be reproduced on the other places of the ground line network with no trace.

Citation


Yu-Lei Du, Ying-Hua Lu, and Jin-Ling Zhang, "Novel Method to Detect and Recover the Keystrokes of Ps/2 Keyboard," Progress In Electromagnetics Research C, Vol. 41, 151-161, 2013.
doi:10.2528/PIERC13042302
http://jpier.org/PIERC/pier.php?paper=13042302

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