隐写信道容量
Capacity of Steganographic Channels
摘要:
本文研究了隐写术中的一个核心问题,即:有多少数据可以被安全地隐藏而不被发现?为了回答这个问题,隐写容量的正式定义。一旦这已经被定义,一个通用的公式的能力是发达国家。该公式适用于一个非常广泛的渠道,由于使用的信息频谱的方法。这种方法允许任意隐写分析以及非平稳,非遍历编码器和攻击通道的分析。在给出一般公式之后,应用各种简化来深入了解示例隐藏和检测方法。最后,在一般性讨论中总结了工作的背景和应用。
英文摘要:
This work investigates a central problem in steganography, that is: How much data can safely be hidden without being detected? To answer this question, a formal definition of steganographic capacity is presented. Once this has been defined, a general formula for the capacity is developed. The formula is applicable to a very broad spectrum of channels due to the use of an information-spectrum approach. This approach allows for the analysis of arbitrary steganalyzers as well as non-stationary, non-ergodic encoder and attack channels. After the general formula is presented, various simplifications are applied to gain insight into example hiding and detection methodologies. Finally, the context and applications of the work are summarized in a general discussion.
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。