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arXiv 1002.0026cs.ITcs.CRmath.IT
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隐写术中的完美Z2Z4-linear码

Perfect Z2Z4-linear codes in Steganography

H. Rifà-Pous, J. Rifà, L. Ronquillo

摘要:

隐写术是一种信息隐藏应用,其目的是将秘密信息隐藏到一种常用的媒体中。不幸的是,理论上的隐藏渐近容量的隐写系统是没有达到目前开发的算法。本文提出了一种基于Z2 Z4线性码的隐写算法,该算法符合+/-1-隐写算法,即通过对每个符号进行最多一个单位的变形,将秘密信息嵌入到隐藏信息中。这种方法解决了目前已知的基于三进制汉明码的最有效方法所遇到的一些问题。最后,这种新技术的性能进行了比较,与上述方法和著名的理论上限。

英文摘要:

Steganography is an information hiding application which aims to hide secret data imperceptibly into a commonly used media. Unfortunately, the theoretical hiding asymptotical capacity of steganographic systems is not attained by algorithms developed so far. In this paper, we describe a novel coding method based on Z2Z4-linear codes that conforms to +/-1-steganography, that is secret data is embedded into a cover message by distorting each symbol by one unit at most. This method solves some problems encountered by the most efficient methods known today, based on ternary Hamming codes. Finally, the performance of this new technique is compared with that of the mentioned methods and with the well-known theoretical upper bound.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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