一种基于点阵式字符编码的文本信息隐藏算法

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和实用性不强的特点,提出了一种基于点阵式字符编码的自校验盲文本信息隐藏算法。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。实验结果显示该算法对文本内容的删减、添加、格式调整等编辑攻击具有很好的鲁棒性。

A Text Information Hiding Algorithm Based on Dot-Matrix Character Code

Focusing on the problem of copy right protection for electronic document content and the deficiency of watermarking algorithm based on text information,like bad robustness and practicability,a self-verify blind 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 realize the information hideing,a slight modification of color is made to them based to HVS and the encrypted information.A lot of experiments have shown that the algorithm has a better watermarking robustness for editor attacking of text concent,such as deleting,adding,and adjusting the format of text.