基于点阵式字符编码的文本信息隐藏算法

Text Information Hiding Algorithm Based on Dot-Matrix Character Code

针对电子文档内容的版权保护问题和现有文本信息隐藏算法鲁棒性不强的特点,提出了一种基于点阵式字符编码的文本信息隐藏算法。该算法先对要隐藏的信息进行点阵式编码处理,使字符具有图像的特性,然后根据Logistic混沌系统对该点阵式编码信息进行二值化处理加密,结合HVS和加密后信息对文本的颜色进行微小修改,从而实现信息的隐藏。实验结果显示该信息隐藏算法对文本内容的编辑具有很好的鲁棒性和实用性。

To address the problem of copyright protection for electronic document content and the poor robustness of watermarking algorithm based on text information,a text information hiding algorithm based on dot-matrix character code is proposed.The hiding information is firstly coded by dot-matrix,and the character has the image characteristic property.Then the coded information is encrypted by a two-value chaotic sequence generated by Logistic system.To hide the information,a slight modification of color is made based on HVS and the encrypted information.Experiments have shown that the algorithm has a better watermarking robustness and better practicability for editor attacking of text concent.