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ThermoSteg-Covert Channel for Microbolometer Thermographic Cameras.

Krzysztof Sawicki1, Grzegorz Bieszczad1, Tomasz Sosnowski1

  • 1Institute of Optoelectronics, Military University of Technology, 00-908 Warsaw, Poland.

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Summary

Researchers developed ThermoSteg, a novel steganography technique using thermal imaging cameras to hide data. This method embeds information by altering camera integration time, enabling covert wireless data transmission via thermal sensors.

Keywords:
covert channelhardware securitysteganographythermal camerasthermography

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Area of Science:

  • Information Security
  • Thermal Imaging Technology
  • Data Transmission

Background:

  • Steganography is a method for concealing information within other data.
  • Thermal imaging cameras capture infrared radiation, producing images of temperature distributions.
  • Existing data hiding techniques often rely on visual or digital data manipulation.

Purpose of the Study:

  • To introduce a novel steganography technique called ThermoSteg.
  • To explore the feasibility of using thermal imaging for covert data embedding and transmission.
  • To demonstrate a new method for wireless data transmission using thermal sensors.

Main Methods:

  • The ThermoSteg method modifies the integration time parameter of a thermal imaging camera.
  • Altering integration time causes microbolometer array heating, embedding a signal.
  • Covert information is extracted from thermogram streams captured by a secondary thermal camera.

Main Results:

  • Successful embedding and extraction of covert information using the ThermoSteg method.
  • Demonstration of a covert channel for wireless data transmission via thermal sensors.
  • Experimental validation of the physical phenomenon exploited by ThermoSteg.

Conclusions:

  • ThermoSteg offers a novel approach to steganography within the field of thermal imaging.
  • The technique enables covert data transmission, creating a unique wireless communication channel.
  • Further research can explore optimizations and applications of thermal steganography.