Estimation of eavesdropping distance from conducted emission on network cable of a PC

Author

Yu-lei Du ; Ying-hua Lu ; Jin-ling Zhang ; Qiang Cui

Author_Institution

Sch. of Electron. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2012

fDate

6-9 Nov. 2012

Firstpage

347

Lastpage

350

Abstract

The display image of a PC can be reconstructed by using the conducted emission on the PC´s network cable. The relevant signals which be used to reconstruct the original image are partly contained in the frequency region higher than 30MHz in the conducted emission. Illegal authorizer can reconstruct the original display image on the other place of the LAN without being noticed. Firstly, a transmission model for the video signals which transmit in the network cable is proposed. And then, the maximum safe distance is estimated by using this model. Lastly, in order to check the validity of the estimating distance, the eavesdropping experiment is carried out to reconstruct the original display image.

Keywords

authorisation; electromagnetic compatibility; local area networks; signal reconstruction; twisted pair cables; LAN; PC network cable; conducted emission; eavesdropping distance estimation; illegal authorizer; image reconstruction; local area networks; transmission model; video signals; Electromagnetic interference; Electromagnetics; Image reconstruction; Local area networks; Power cables; Probes; Transmission line matrix methods; UTP cable; conducted emission; electromagnetic secure; transmission model;

fLanguage

English

Publisher

ieee

Conference_Titel

Environmental Electromagnetics (CEEM), 2012 6th Asia-Pacific Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4673-0030-8

Type

conf

DOI

10.1109/CEEM.2012.6410640

Filename

6410640