Ten lectures on wavelets
Wavelets and subband coding
Attacks on Copyright Marking Systems
Proceedings of the Second International Workshop on Information Hiding
An Analysis of One of the SDMI Candidates
IHW '01 Proceedings of the 4th International Workshop on Information Hiding
Evaluation of Copyright Marking Systems
ICMCS '99 Proceedings of the IEEE International Conference on Multimedia Computing and Systems - Volume 2
A note on the limits of collusion-resistant watermarks
EUROCRYPT'99 Proceedings of the 17th international conference on Theory and application of cryptographic techniques
An implementation of, and attacks on, zero-knowledge watermarking
IH'04 Proceedings of the 6th international conference on Information Hiding
Watermarking attack: security of WSS techniques
IWDW'04 Proceedings of the Third international conference on Digital Watermarking
On the limits of steganography
IEEE Journal on Selected Areas in Communications
Improved wavelet-based watermarking through pixel-wise masking
IEEE Transactions on Image Processing
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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.