摘要
针对现阶段文本信息隐藏算法嵌入率低、隐匿性差、容易被机器检测等问题,本文提出一种基于句式控制的宋词载体文本信息隐藏方案。通过分析宋词格律模板中韵律与词性的关系,设计针对宋词词典的词性提取算法,经处理后生成的"韵律-词性"词典容量超过40000词,并带有4个词性和32个韵律。设计句式控制下的信息隐藏与提取算法,可将秘密信息通过全宋词中的140个词牌进行隐写,生成格律、句式和词性同原始宋词完全相同的隐写宋词。实验结果表明,相比基于统计学的宋词词典构建算法,本方案分词成功率达100%,秘密信息嵌入率最高达20.2%,具有运行速度快,隐匿性强,安全性高等特点。
In this paper,a text information hiding scheme of Song poetry carrier based on sentence pattern control is proposed for the problem that current text information hiding algorithm is featured with low embedding rate,weak stealthiness and easy to be tested by machine. Through analyzing the relationship between rhythm and word class in template of Song poetry versification,word-class extraction algorithm of Song poetry dictionary was designed,capacity of＂rhythm-word class＂dictionary generated after processing exceeded 40000 words,with 4 word classes and 32 rhythms. Information hiding and extraction algorithm under the control of the designed sentence pattern could covert the secret information in the form of 140 tune patterns in the complete Song poetry poems,to generate converted Song poetry with versification,sentence pattern and word class completely same as the original Song poetry. The experiment result indicated that the success rate of word segmentation of this scheme was up to 100%,and embedding rate of secret information to a maximum of 20. 2%,characterized by high running speed,strong stealthiness and high safety when compared with Song poetry dictionary constructing algorithm based on statistics.
出处
《计算机与现代化》
2017年第8期91-97,共7页
Computer and Modernization
基金
大学生创新训练计划项目(2016CX01607)
江苏省自然科学基金资助项目(BK20150760)
关键词
信息隐藏
宋词
句式控制
嵌入率
information hiding
Song poetry
control of sentence pattern
embedding rate
