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Information-Theoretic Analysis for the Difficulty of Extracting Hidden Information 被引量:5
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作者 ZHANGWei-ming LIShi-qu +1 位作者 CAOJia LIUJiu-fen 《Wuhan University Journal of Natural Sciences》 EI CAS 2005年第1期315-318,共4页
The difficulty of extracting hidden information, which is essentially a kindof secrecy, is analyzed by information-theoretic method. The relations between key rate, messagerate, hiding capacity and difficulty of extra... The difficulty of extracting hidden information, which is essentially a kindof secrecy, is analyzed by information-theoretic method. The relations between key rate, messagerate, hiding capacity and difficulty of extraction are studied in the terms of unicity distance ofstego-key, and the theoretic conclusion is used to analyze the actual extracting attack on LeastSignificant Bit(LSB) steganographic algorithms. 展开更多
关键词 information hiding STEGANOGRAPHY extracting attack difficulty ofextraction unicity distance
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