In order to promote the Chinese digital text's copyright protection technology, this paper proposes a Chinese Text Zero-Watermark scenario based on Sentence's Entropy. This scenario calculates the entropies of sentences based on wordfrequency and makes crucial sentence selection based on entropy. After that, watermark is constructed with the order of crucial sentences. Furthermore, to prove its effectiveness, the scenario is validated by simulation and it has shown fine robust and ability of anti-attack.
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