摘要
首先根据线性反馈移位寄存器的性质,设计了一种水印信息模型;然后分析文本数据编码及中英文文本的特点,基于空格和标点替换将水印信息模型生成的信息嵌入到宿主文本中,嵌入过程不改变文本中的文字内容,不增加宿主文本占用的存储空间,充分维护原创。面对删除、替换、增添、格式攻击时,具有较高的稳健性;分别对中英文文档进行试验,实验结果表明了该算法的有效性。
Through analyzing text coding and the property of LSFR, a novel digital text watermarking algorithm based on LSFR is proposed. There is no need to change character contents for protecting the authorship, and the number of bytes of the text is not increased. The technique is not affected by formatted modifying and has good robustness against attacks, such as partial deleting, substituting, adding and reversing. Both Chinese and Engish documents are tested in experiments, and ~imulation results show that the method is feasible.
出处
《信息工程大学学报》
2011年第3期257-262,共6页
Journal of Information Engineering University
基金
国家自然科学基金资助项目(60803155)
