Four-scanning attack on hierarchical digital watermarking method for image tamper detection and recovery |
| |
Authors: | Chin-Chen Chang Yi-Hsuan Fan Wei-Liang Tai |
| |
Affiliation: | 1. College of Computer Science, Chongqing University, Chong Qing;2. School of Mathematics and Statistics, Yangtze Normal University, Chong Qing |
| |
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. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|