On the security of a fragile digital image watermarking scheme

Authors:
Jun Sang;Mohammad S. Alam;Xiaohong Zhu
Affiliations:
Chongqing University, Chongqing, China;University of South Alabama, Mobile, AL;Chongqing University, Chongqing, China
Venue:
GVE '07 Proceedings of the IASTED International Conference on Graphics and Visualization in Engineering
Year:
2007

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Abstract

In this paper, the security of a fragile digital watermarking for image tamper detection and recovery proposed in Reference 1 is analyzed. It is shown that the secret key for watermark embedding and detection can be easily obtained by exhaustive search, while keeping the number of the necessary exhaustive searches small. Therefore, one may counterfeit watermarks successfully, resulting in incorrect authentication. The possible solutions for such problems are suggested in this paper.