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Detektering och analys av röjande signaler från pekskärmar
Linköping University, Department of Electrical Engineering, Information Coding.
2019 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Detection and Analysis of Compromising Emanations from Touchscreens (English)
Abstract [en]

This work is about TEMPEST (Transient Electro-Magnetic Pulse Emanation Standard) which is a term for describing the gathering of secret information that leak from a system. The specific observed system is the touchscreen of a smartphone.

The aim is to firstly examine the information needed for an identification of the touched area on a touchscreen of a smartphone by TEMPEST. Given this information, the work then examines the accuracy of such an identification. The method is based on experimental examinations, observations and measures as well as probability distributions.

Conclusions from the results are the fact that the accuracy of an identification becomes higher when synchronizing the communication between the smartphone and its display with a measuring instrument. Moreover, the accuracy of an identification varies with chosen measurement method and this work showed that a higher accuracy was achieved when taking measurements with an absorbing clamp compared to a near-field probe.

Place, publisher, year, edition, pages
2019. , p. 57
Keywords [sv]
röjande signaler, smarttelefon, pekskärm
National Category
Computer Engineering
Identifiers
URN: urn:nbn:se:liu:diva-158103ISRN: LiTH-ISY-EX--19/5212--SEOAI: oai:DiVA.org:liu-158103DiVA, id: diva2:1330301
External cooperation
Sectra Communications AB
Subject / course
Information Coding
Presentation
2019-06-07, Hammingrummet, Linköping, 14:30 (Swedish)
Supervisors
Examiners
Available from: 2019-06-25 Created: 2019-06-25 Last updated: 2019-06-25Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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