Title | ||
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Simple Countermeasure To Non-Linear Collusion Attacks Targeted For Spread-Spectrum Fingerprinting Scheme |
Abstract | ||
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Based upon the Kerckhoffs' principle, illegal users can get to know the embedding and detection algorithms except for a secret key. Then, it is possible to access to a host signal which may be selected from frequency components of a digital content for embedding watermark signal. Especially for a fingerprinting scheme which embeds user's information as a watermark, the selected components can be easily found by the observation of differently watermarked copies of a same content. In this scenario, it is reported that some non-linear collusion attacks will be able to remove/modify the embedded signal. In this paper, we study the security analysis of our previously proposed spread-spectrum (SS) fingerprinting scheme [1], [2] under the Kerckhoffs' principle, and reveal its drawback when an SS sequence is embedded in a color image. If non-linear collusion attacks are performed only to the components selected for embedding, the traceability is greatly degraded while the pirated copy keeps high quality after the attacks. We also propose a simple countermeasure to enhance the robustness against non-linear collusion attacks as well as possible signal processing attacks for the underlying watermarking method. |
Year | DOI | Venue |
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2016 | 10.1587/transinf.2015MUP0005 | IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS |
Keywords | DocType | Volume |
fingerprinting, spread spectrum, Kerckhoffs' principle, host signal | Journal | E99D |
Issue | ISSN | Citations |
1 | 1745-1361 | 1 |
PageRank | References | Authors |
0.37 | 14 | 1 |
Name | Order | Citations | PageRank |
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Minoru Kuribayashi | 1 | 23 | 19.55 |