Research Article
Analysis of a Zero Location based Authentication Scheme for Biomedical Images
@INPROCEEDINGS{10.4108/e-forensics.2008.2674, author={Antionette W.-T. Goh and M. L. Dennis Wong and Raphael C.-W. Phan}, title={Analysis of a Zero Location based Authentication Scheme for Biomedical Images}, proceedings={1st International ICST Conference on Forensic Applications and Techniques in Telecommunications, Information and Multimedia}, publisher={ACM}, proceedings_a={E-FORENSICS}, year={2010}, month={5}, keywords={Watermarking integrity zero locations Z-transform biomedical images}, doi={10.4108/e-forensics.2008.2674} }- Antionette W.-T. Goh
M. L. Dennis Wong
Raphael C.-W. Phan
Year: 2010
Analysis of a Zero Location based Authentication Scheme for Biomedical Images
E-FORENSICS
ACM
DOI: 10.4108/e-forensics.2008.2674
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.
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