基于网络文本大数据的信息隐藏方法

发布时间：2018-04-20 22:34

本文选题：网络文本 + 大数据　；参考：《小型微型计算机系统》2017年02期

【摘要】：文本作为语言的视觉形式是人类最重要的交流工具,基于文本的信息隐藏算法具有很高的实用价值.文本的一个明显特点是高度凝练,信息冗余少,因而文本隐藏的容量较低.另一方面,传统的文本隐藏建立在修改载体的基础上,而文本语义对于修改非常敏感,微小的修改可能引起明显异常,因而文本隐藏的隐蔽性较差.针对以上问题,深入分析了网络文本大数据的特点,据此设计了一种基于网络文本大数据的信息隐藏算法,把对载体的修改转化成对载体的检索,并通过位置信息定位秘密消息,从而不需要修改载体即可嵌入信息,隐蔽性大大提高.另外,实验结果显示本算法具有接近通用字符编码效率的嵌入率(18比特/字符),是一种高效的信息隐藏算法.
[Abstract]:Text, as the visual form of language, is the most important communication tool for human beings. Text based information hiding algorithm is of great practical value. One of the obvious features of text is that it is highly condensed and has less information redundancy, so the capacity of text hiding is low. On the other hand, the traditional text hiding is based on the modification carrier, and the text semantics is very sensitive to the modification, the minor modification may cause obvious anomalies, so the concealment of text hiding is poor. Aiming at the above problems, this paper deeply analyzes the characteristics of big data, designs an information hiding algorithm based on the online text big data, and transforms the modification of the carrier into the retrieval of the carrier. The secret message is located by location information, so that the information can be embedded without modifying the carrier, and the concealment is greatly improved. In addition, the experimental results show that the algorithm has an embedding rate of 18 bits / character, which is close to the common character coding efficiency, and is an efficient information hiding algorithm.
【作者单位】：清华大学电子工程系;中国移动通信集团公司网络部;
【基金】：教育部-中国移动科研基金项目(MCM20123041)资助国家自然科学基金项目(61472092;61402115;U1405254;61271392)资助
【分类号】：TP391.1;TP309

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