Four-scanning Attack on Hierarchical Digital Watermarking Method for Image Tamper Detection and Recovery

ASIAIR > College of Computer Science > Department of Computer Science and Information Engineering > Journal Artical > Item 310904400/6416

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Title:	Four-scanning Attack on Hierarchical Digital Watermarking Method for Image Tamper Detection and Recovery
Authors:	Chang, C. C.;Fan, Y. H.;Tai, W. L.
Keywords:	Fragile watermarking;Image authentication;Tamper detection
Date:	2008-02
Issue Date:	2009-12-17 06:57:50 (UTC+0)
Publisher:	Asia University
Abstract:	In a recent paper presented by Lin et al., a block-based hierarchical watermarking algorithm for digital images is proposed. It adopts parity check and the intensity-relation check to conduct the experiment of image tamper detection. Their experimental results indicate that the precision of tamper detection and localization is 99.6% and 100% after level-2 and level-3 inspections, respectively. The proposed attacks demonstrate that this watermarking algorithm is fundamentally flawed in that the attacker can tamper a watermarked image easily without being detected. In this paper, a four-scanning attack aimed to Lin et al.'s watermarking method is presented to create tampered images. Furthermore, in case they use encryption to protect their 3-tuple-watermark, we proposed a blind attack to tamper watermarked images without being detected. Experimental results are given to support and enhance our conclusions, and demonstrate that our attacks are successful in tampering watermarked images.
Relation:	Pattern Recognition 41(2): 654-661
Appears in Collections:	[Department of Computer Science and Information Engineering] Journal Artical

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