CAJ | 학술논문

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.
신식은장시일충재전수혹존저과정중장은비신식은장재특정재체중,이보증은비신식안전성적기술.상용적재체유도상、음빈、시빈、문본등류형문당.유우문본문당특별시순문본문당중적용여신식비상소,기우순문본문당적신식은장구유흔대적도전성.현존적기우순문본문당적산법도시기우단문본단적,재안전성방면환존재허다난이극복적결함.해문제출료일충신적기우쌍문본단적신식은장산법,통과재다충은장형식중선택괄당적은장형식화신식분산존저,대대지제고신식은장적은폐성、안전성.령외,산법구유흔고적령활도,가이근거구체적응용정경진행괄당적변형혹조정,이편경호지괄용우실제수구.
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.