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Steganalysis method based on blindness of steganalysis systems

A steganalysis and steganography technology, which is applied in the information hiding sub-field in the field of information security technology, can solve the problems of basic purpose and different ideas, and achieve the effect of improving the analysis

Inactive Publication Date: 2013-08-21
INST OF INFORMATION ENG CHINESE ACAD OF SCI
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Problems solved by technology

This patent method only describes a specific steganographic method, and does not propose any indicators that can evaluate the applicability or blindness of the steganographic system. Therefore, the basic purpose and thinking of this patent application are obviously different from those of this patent application.

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  • Steganalysis method based on blindness of steganalysis systems
  • Steganalysis method based on blindness of steganalysis systems
  • Steganalysis method based on blindness of steganalysis systems

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specific Embodiment approach

[0039] 1. Construct the probability distribution model of the steganographic mode

[0040] Select a set of steganographic methods T that may be used e ,e=1,2,…,E, and set a set of embedding rate A r ,r=1,2,…,R, thus obtaining a set of steganographic patterns S e,r . According to the experience or the prior knowledge of the occurrence probability of the steganographic algorithm, the probability distribution model of the steganographic mode under this configuration is constructed. Set steganographic mode S e,r The probability of a certain steganographic algorithm e appearing when the embedding rate is r is P e,r ,p e,r The higher the value of , the greater the possibility of the occurrence of the steganographic pattern, and ensure that the sum of the occurrence probabilities of all steganographic patterns is 1, that is: ∑P e,r =1. Tables 2 to 4 are examples of probability distribution models of three different steganographic modes.

[0041] Table 2 Probability distributi...

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Abstract

The invention discloses a steganalysis method based on blindness of steganalysis systems. The method includes the steps of (1) constructing a probability distribution model of a steganalysis mode, wherein the probability distribution model comprises various steganalysis modes and occurrence probabilities of the steganalysis modes, (2) choosing a group of original text sample sets and carrying out stegannaysis on one original text sample set by means of each steganalysis mode in the probability distribution model to produce a corresponding steganalysis sample set, (3) regarding the steganalysis systems to be tested, calculating the analysis accuracy of the steganalysis system for each corresponding steganalysis mode according to each steganalysis sample set and each corresponding original text sample set and carrying out weighted average on the analysis accuracy of each steganalysis mode according to the occurrence probabilities of the steganalysis modes to obtain the blindness value of the steganalysis system, and (4) carrying the steganalysis on a hidden text to be analyzed according to the steganalysis system with the highest blindness value. The steganalysis method can objectively evaluate practical analysis capacity of the steganalysis systems and improve analysis for unknown steganalysis arithmetic hidden texts.

Description

technical field [0001] The present invention relates to a steganalysis method, in particular to a steganalysis method based on the blindness of a steganalysis system, including the definition and calculation of the steganalysis blindness index and the use of the index to evaluate the steganalysis blindness. The method belongs to the sub-field of information hiding in the field of information security technology. Background technique [0002] With the development of digital multimedia, modern steganography (Steganography) technology with digital content as the carrier has gradually become one of the focuses in the field of information security research. Steganography can embed confidential information in the carrier data without affecting the perceived content and quality of the carrier data, and improve the security of confidential data transmission or storage by concealing the existence of confidential communication or confidential storage. The steganography system embeds ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00G06K9/66
Inventor 赵险峰夏冰冰张纪宇安宁钰周楠
Owner INST OF INFORMATION ENG CHINESE ACAD OF SCI
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