Secret key distribution leveraging color shift over visible light channel

Hongbo Liu, Bo Liu, Cong Shi, Yingying Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

Given the widely adoption of screen and camera in many electronic devices, the visible light communication (VLC) over screen-to-camera channel emerges as a novel short range communication technique in recent years. Active research explores various ways to convey messages over screen-camera channel, such as barcode and unobtrusive optical pattern. However, with the prevalence of LED screens of wide viewing angles and mobile devices equipped with high standard cameras, the threat of information leakage over screen-to-camera channel becomes in-negligible. Few studies have discussed how to ensure the security of data transmission over screen-to-camera channel. In this paper, we propose a secret key distribution system leveraging the unique color shift property over visible light channel. To facilitate such design, we develop a practical secret key matching based method to map the secret key into gridded optical patterns on screen, which can only be correctly recognized by the legitimate user through an accessible region and allow regular data stream transmission through valid grids. The proposed system is prototyped with off-the-shelf devices and validated under various experimental scenarios. The results show that our system can achieve high bit-decoding accuracy for the legitimate users while maintaining comparable data throughput as regular unobtrusive VLC systems with very low recovery accuracy of the encrypted data for the attackers.

Original languageEnglish (US)
Title of host publication2017 IEEE Conference on Communications and Network Security, CNS 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-9
Number of pages9
ISBN (Electronic)9781538606834
DOIs
StatePublished - Dec 19 2017
Externally publishedYes
Event2017 IEEE Conference on Communications and Network Security, CNS 2017 - Las Vegas, United States
Duration: Oct 9 2017Oct 11 2017

Publication series

Name2017 IEEE Conference on Communications and Network Security, CNS 2017
Volume2017-January

Conference

Conference2017 IEEE Conference on Communications and Network Security, CNS 2017
Country/TerritoryUnited States
CityLas Vegas
Period10/9/1710/11/17

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Safety, Risk, Reliability and Quality

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