×

Cryptanalysis of Barni et al. watermarking scheme. (English) Zbl 1153.94365

Maitra, Subhamoy (ed.) et al., Progress in cryptology – INDOCRYPT 2005. 6th international conference on cryptology in India, Bangalore, India, December 10–12, 2005, Proceedings. Berlin: Springer (ISBN 978-3-540-30805-8/pbk). Lecture Notes in Computer Science 3797, 197-208 (2005).
Summary: 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.
For the entire collection see [Zbl 1131.94004].

MSC:

94A60 Cryptography
PDFBibTeX XMLCite
Full Text: DOI