Cryptanalysis and Improvement of the Robust and Blind Watermarking Scheme for Dual Color Image

Author:

Nan Hai1,Fang Bin1,Yang Weibin2,Qian Jiye1,Li Ming3,Liu Yi4,Zhang Yushu1

Affiliation:

1. College of Computer Science, Chongqing University, Chongqing 400044, China

2. College of Automation, Chongqing University, Chongqing 400044, China

3. College of Computer and Information Engineering, Henan Normal University, Xinxiang 453007, China

4. PetroChina Chongqing Marketing Jiangnan Company, Chongqing 400060, China

Abstract

With more color images being widely used on the Internet, the research on embedding color watermark image into color host image has been receiving more attention. Recently, Su et al. have proposed a robust and blind watermarking scheme for dual color image, in which the main innovation is the using of two-level DCT. However, it has been demonstrated in this paper that the original scheme in Su’s study is not secure and can be attacked by our proposed method. In addition, some errors in the original scheme have been pointed out. Also, an improvement measure is presented to enhance the security of the original watermarking scheme. The proposed method has been confirmed by both theoretical analysis and experimental results.

Funder

National Natural Science Foundation of China

Publisher

Hindawi Limited

Subject

General Engineering,General Mathematics

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