期刊论文

Coverless Information Hiding Based on Components Histogram and Random Text Selection

中文

电讯技术

1001-893X

2022

62

4

526-532

10.3969/j.issn.1001-893x.2022.04.017

国家重点研发计划(2019YFE0122600)。

本校为第一机构

目前利用传统文本搜索式进行的无载体信息隐藏方法中,信息隐藏容量小,隐藏成功率低.为此,提出了一种基于部件直方图和随机文本选择的无载体信息隐藏方法.首先对文本数据库构建部件直方图,利用哈希算法生成文本标签作为文本索引,并根据给定的阈值随机选择一定量的文本对象作为载体文本集;然后对秘密信息进行转换,得到"部件+运算符"的组合,在载体文本集中检索包含有秘密信息的部件集合的载体文本,得到秘密信息索引;最后对文本索引和秘密信息索引进行哈夫曼编码(Huffman Coding)形成二进制序列,作为密钥索引发送给接收方,以实现秘密信息的隐藏.实验结果表明该算法隐藏成功率可达到98.33％,证明了该...

In current coverless information hiding methods using traditional text search,small information hiding capacity and low hiding success rate are the main problems.For these reasons,a coverless information hiding method based on components histogram and random text selection is proposed.Firstly,for the text database the component histogram is constructed,the text label is generated as the text index by Hash algorithm,and then a certain amount of text objects is randomly selected as the carrier text set using the given threshold in the text databa...