误码校正码在信息隐藏中的应用

在信息隐藏技术不断发展的过程中,隐藏分析技术也在不断地进步,信息隐藏的分析和攻击者们发现:在对某个载体对象嵌入秘密信息后,载体对象的某些特征会发生改变,当这种改变达到某种程度时就可以确定某个载体对象中含有秘密信息.因此,在设计一个信息隐藏算法时应尽量考虑减少由于秘密信息的嵌入而带来的载体对象某种特征的改变程度.简要介绍了误码校正码及信息隐藏的概念,并提出了一种在信息隐藏的过程中引入误码校正码来减小载体对象在隐藏信息前后差异的方法.

APPLICATION OF ERROR-CORRECTING CODES TO INFORMATION HIDING

Along with the development of the information hiding technology, hiding analysis technology is also in unceasing progress. The information hiding analyzers and aggressors discover that, with the secret information inserted in some carrier object, certain characteristics of the carrier object can have some changes. When these changes achieve to some kind of degree, it is sure that there is some secret information in the carrier object. Therefore, during the design of an information hiding algorithm, it should be considered how to reduce the changes brought out by the insertion of secret information. The concepts of error-correcting codes and the information hiding technology are introduced ,and error-correcting codes are applied to the information hiding to reduce the changes of the carrier object during the insertion of secret information.