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Cryptanalysis of Barni et al. Watermarking Scheme

机译:Barni等人的密码分析。水印方案

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摘要

In this paper, we analyze a wavelet based watermarking scheme proposed by Barni et al in 2001. The said scheme modifies high frequency wavelet coefficients to embed a watermark in an image. The scheme employs well known HVS model during embedding to embed the watermark in a perceptually transparent manner. Here we present a successful cryptanalysis of the scheme using single watermarked copy. In the process of cryptanalysis, we recover the watermark signal from the marked image and the attack is similar to cryptographic key recovery attack. Furthermore, we not only successfully recover the secret watermark signal from the attacked image, but also we are able to remove the watermark. This raises a serious question about the security and usability of the watermarking scheme in any practical system.
机译:在本文中,我们分析了Barni等人在2001年提出的基于小波的水印方案。该方案修改了高频小波系数,以在图像中嵌入水印。该方案在嵌入期间采用众所周知的HVS模型,以感知透明的方式嵌入水印。在这里,我们介绍了使用单水印副本对该方案进行的成功密码分析。在密码分析过程中,我们从标记的图像中恢复水印信号,其攻击类似于密码密钥恢复攻击。此外,我们不仅成功地从受攻击图像中恢复了秘密水印信号,而且还能够删除水印。这就提出了一个关于在任何实际系统中水印方案的安全性和可用性的严重问题。

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