Image LSB matching steganography secret key recovery method based on wavelet absolute moment

An absolute moment and key technology, applied in the field of information security

Active Publication Date: 2016-06-29
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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Problems solved by technology

At the same time, corporate employees or government employees may also use digital steganography to hide internal information in seemingly normal digital images, audio or video and other multimedia data to evade supervision.

Method used

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  • Image LSB matching steganography secret key recovery method based on wavelet absolute moment
  • Image LSB matching steganography secret key recovery method based on wavelet absolute moment
  • Image LSB matching steganography secret key recovery method based on wavelet absolute moment

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Embodiment Construction

[0036] Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

[0037] Such as figure 1 As shown, the image LSB matching steganographic key recovery method based on wavelet absolute moments described in the present invention, for each possible steganographic key in the key space or key dictionary, respectively perform the following steps in sequence:

[0038] A: Set the estimated value L of the steganographic information length, use the known embedding position selection mechanism, and generate a test path Path of length L according to each possible steganographic key k k ,Path k = i 1 i 2 …i L , where i 1 ,i 2 ,...,i L are the 1st, 2nd,..., L possible embedding positions obtained according to the possible steganographic key k, respectively.

[0039] B: Use the wavelet absolute moment residual calculation method to calculate the wavelet absolute moment residual of each position in the image to be detected, and then c...

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Abstract

The invention discloses an image LSB matching steganography secret key recovery method based on wavelet absolute moment. For every possible steganography secret key in a secret key space or a secret key dictionary, the following steps can be carried out sequentially: A, steganography information length estimated value L can be set, and the testing path(path k) having the length of L can be generated according to every possible steganography secret key k; B, the mean absolute value (Rk) of the wavelet absolute moment residuals of all positions in the testing path in the image to be detected and the mean absolute value (R'k) of the wavelet absolute moment residuals of all positions out of the testing path in the image to be detected can be respectively calculated; C, the difference value (dk) between the mean absolute value (Rk) and the mean absolute value (R'k) can be calculated; D, one or a plurality of steganography secret key/s corresponding to the maximum difference/s (dk) can be used as the recovered suspected steganography secret keys. Under the precondition of the embedded position only determined by the steganography secret keys, the suspected steganography secret keys can be determined.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a key recovery method based on image LSB matching steganography of wavelet absolute moments. Background technique [0002] Digital steganography is a technology that embeds secret information in the redundancy of multimedia data such as images, videos or audios to achieve covert communication. With the development of computer network and multimedia technology, digital steganography has become one of the important technologies in the field of information security, which can be used for confidential communication between individuals and enterprises. At the same time, enterprise employees or government employees may also use digital steganography to hide internal information in seemingly normal digital images, audio or video and other multimedia data to evade supervision. Among many steganography methods, LSB matching steganography has been extended to many different d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
CPCG06T1/0021G06T2201/0065
Inventor 杨春芳刘粉林罗向阳巩道福芦斌朱玛张轶宋晓峰王平
Owner PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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