Information-Theoretic Analysis for the Difficulty of Extracting Hidden Information

被引：5
|
作者：
ZHANG Wei-ming 1
2.State Key Laboratory of Information Security
机构：
来源：
WuhanUniversityJournalofNaturalSciences | 2005年 / 01期
关键词：
information hiding; steganography; extracting attack; difficulty of extraction; unicity distance;
D O I：
暂无
中图分类号：
TN918.1 [理论];
学科分类号：
070104 ;
摘要：
The difficulty of extracting hidden information, which is essentially a kind of secrecy, is analyzed by information-theoretic method. The relations between key rate, message rate, hiding capacity and difficulty of extraction are studied in the terms of unicity distance of stego-key, and the theoretic conclusion is used to analyze the actual extracting attack on Least Significant Bit(LSB) steganographic algorithms.
引用
收藏
页码：315 / 318
页数：4
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