Analysis of a zero location based authentication scheme for biomedical images

Antionette W.T. Goh, M. L.Dennis Wong, Raphael C.W. Phan

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Abstract

In this paper, a fragile watermarking scheme proposed for authentication of biomedical images in the Z-transform domain is analysed. The studied scheme takes advantage of the zero locations in the Z-domain which are sensitive to any tampering made on a watermarked host image. However, we are able to refute the designers' claims by carrying out at least two attacks on the scheme. Our attacks are based on the ability to determine the embedded check-bits in the watermarked image and thereafter, exploit the locations of the check-bits to alter the watermarked image while still resulting in successful authentication in the end.

Original languageEnglish
Title of host publicatione-Forensics 2008 - Proceedings of the 1st International Conference on Forensic Applications and Techniques in Telecommunications, Information, and Multimedia and Workshop
PublisherAssociation for Computing Machinery (ACM)
ISBN (Electronic)9789639799196
DOIs
Publication statusPublished - 21 Jan 2008
Externally publishedYes
EventInternational Conference on Forensic Applications and Techniques in Telecommunications, Information and Multimedia 2008 - Adelaide, Australia
Duration: 21 Jan 200823 Jan 2008
Conference number: 1st

Conference

ConferenceInternational Conference on Forensic Applications and Techniques in Telecommunications, Information and Multimedia 2008
Abbreviated titlee-Forensics 2008
Country/TerritoryAustralia
CityAdelaide
Period21/01/0823/01/08

Keywords

  • Biomedical images
  • Integrity
  • Watermarking
  • Z-transform
  • Zero locations

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