Journal of Circuits, Systems and Computers ( IF 1.5 ) Pub Date : 2022-09-17 , DOI: 10.1142/s021812662350055x Junyu Wang 1 , Yani Zhu 1 , Jiaming Ni 1 , Hui Wang 1 , Ye Yao 1
In recent research works on coverless text information hiding, there are two main problems to be solved: low hiding success rate and small hiding capacity caused by the small amount of redundant information in the cover text. In order to overcome these problems, a method of coverless information hiding based on the combination of Chinese character components is proposed. This method is based on the traditional “location tag keywords” mode for coverless information hiding, but with an improved design to extend the scope of available keywords for data hiding beyond the original cover texts. In our proposed method, each Chinese character in the keyword is split into two components: radicals and independent Chinese character, which are collected and will be recombined in pairs to generate the new Chinese characters. This method increases the hiding success rate and hiding capacity by generating Chinese characters that do not exist in the original cover text. The experimental result shows that the proposed method can utilize less size of carrier text database for efficient information hiding. When the size of carrier text database is reduced to 198MB, the highest hidden capacity and hidden success that can be achieved are 13.45 and 0.99, respectively.
中文翻译:
基于汉字部件组合的文本无覆盖信息隐藏
在最近的无覆盖文本信息隐藏研究中,主要有两个问题需要解决:隐藏成功率低和由于覆盖文本中冗余信息量少而导致的隐藏容量小。为了克服这些问题,提出了一种基于汉字部件组合的无覆盖信息隐藏方法。这种方法是基于传统的“定位标签关键字”模式用于无覆盖信息隐藏,但改进了设计以将数据隐藏的可用关键字范围扩展到原始覆盖文本之外。在我们提出的方法中,关键词中的每个汉字被分成两个部分:部首和独立的汉字,它们被收集起来并成对地重新组合以生成新的汉字。该方法通过生成原始封面文本中不存在的汉字来提高隐藏成功率和隐藏容量。实验结果表明,所提出的方法可以利用较小规模的载体文本数据库进行有效的信息隐藏。当载体文本数据库的大小减少到 198MB,最高隐藏容量和隐藏成功率分别为13.45和0.99。