Steganography Security: Principle and Practice
Yan Ke, Jia Liu, Min-qing Zhang, Ting-ting Su, Xiao-yuan Yang

TL;DR
This paper explores theoretical principles of steganography security, defines security levels, and analyzes the relationship between security, algorithms, and attack resistance, emphasizing the importance of key secrecy.
Contribution
It introduces a formal classification of steganography security levels and provides a theoretical framework distinguishing it from watermarking security.
Findings
Defined four security levels for steganography
Established necessary conditions for secure steganography
Analyzed data hiding algorithms and their security implications
Abstract
This paper focuses on several theoretical issues and principles in steganography security, and defines four security levels by analyzing the corresponding algorithm instances. In the theoretical analysis, we discuss the differences between steganography security and watermarking security. The two necessary conditions for the steganography security are obtained. Under the current technology situation, we then analyze the indistinguishability of the cover and stego-cover, and consider that the steganography security should rely on the key secrecy with algorithms open. By specifying the role of key in steganography, the necessary conditions for a secure steganography algorithm in theory are formally presented. When analyzing the security instances, we have classified the steganalysis attacks according to their variable access to the steganography system, and then defined the four security…
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Taxonomy
TopicsAdvanced Steganography and Watermarking Techniques · Chaos-based Image/Signal Encryption · Internet Traffic Analysis and Secure E-voting
