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中文摘要：
信息隐藏是一种在传输或存储过程中将隐秘信息隐藏在特定载体中,以保证隐秘信息安全性的技术。常用的载体有图像、音频、视频、文本等类型文档。由于文本文档特别是纯文本文档中的冗余信息非常少,基于纯文本文档的信息隐藏具有很大的挑战性。现存的基于纯文本文档的算法都是基于单文本段的,在安全性方面还存在许多难以克服的缺陷。该文提出了一种新的基于双文本段的信息隐藏算法,通过在多种隐藏形式中选择适当的隐藏形式和信息分散存储,大大地提高信息隐藏的隐蔽性、安全性。另外,算法具有很高的灵活度,可以根据具体的应用情景进行适当的变形或调整,以便更好地适用于实际需求。
英文摘要：
Information hiding is a technique that hides secret messages in some carrier during transmission or storage.Carriers in common use include image,audio,video,text documents and so on.Since there is little redundancy in text documents,particularly in plain text documents,information hiding based on plain text documents is much more challenging.Previous algorithms based on plain text documents are all based on a single plain text segment.Therefore,there are many inherent limitations in security of them.In this paper,a novel information hiding algorithm based on double text segments is proposed.The algorithm can enhance the concealment and security of information hiding greatly by choosing a proper hiding form out of many ones and scattering information to places.In addition,the algorithm is so flexible that it can be modified or adjusted according to the certain application scene to fit the practical requirements better.
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