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Proceedings of 2009 International Symposium on Computer Science and Computational Technology (ISCSCT 2009)

Huangshan, China, December 26-28, 2009

Editors: Fei Yu, Guangxue Yue, Jian Shu, Yun Liu

AP Catalog Number: AP-PROC-CS-09CN005

ISBN: 978-952-5726-07-7 (Print), 978-952-5726-08-4 (CD-ROM)

Page(s): 187-190

A Part-of-speeach Tag Sequence Text Zero-watermarking

        Lu He, LingYu Zhang, GuangPing Ma, DingYi Fang, and XiaoLin Gui

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Zero-watermarking technology without modifying the carrier’s data, resolved the imperceptibility of watermarking. Since natural language is lack of embedding space, zero-watermarking is suitable. Without modifying carrier text passive attack does not works, and only active attack may destroy the zero-watermarking. In this paper, we proposed a novel text zero-watermarking algorithm. Words, which are corresponding to one special POS tag sub-sequence pattern, were extracted as candidate for zero-watermarking. Again, words were chose under the control of chaotic function. Since there are so many possible permutation of POS tags sub-sequence and chaotic function has sensitive dependence on initial conditions or the key, the robustness was guaranteed. Experiments results show that it is almost impossible destroyed the zero-watermarking by stochastic synonym substitution and sentence transform and the results also show the robustness is better than other text zero-watermarking algorithms.

Index Terms

Text Watermarking; Zero-watermarking; Natural Language Watermarking; Information Hiding; Chaos

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