Detection method for time-domain audio LSB hidden write

A detection method and audio technology, applied in speech analysis, instruments, etc., can solve the problem of lack of efficient detection technology of time-domain audio LSB

Inactive Publication Date: 2009-07-29
WUHAN UNIV
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It can be seen that there is a lack of efficient detection te

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  • Detection method for time-domain audio LSB hidden write
  • Detection method for time-domain audio LSB hidden write
  • Detection method for time-domain audio LSB hidden write

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Embodiment Construction

[0040] The present invention provides a detection method for audio LSB steganography. By investigating the changes in the sample point values ​​of audio specific samples brought about by LSB steganography, the sample pair statistical variation law is obtained, and finally the quadratic equation of embedded strength is derived. Estimate the embedding strength, and use the strength threshold to judge whether there is hidden information embedded in LSB steganography in the audio information contained in the audio file to be tested. The specific steps are:

[0041] Step 1, read the audio file to be tested, and integerize the sample point values ​​of each sample point in the file;

[0042] The audio file to be tested is generally in wav format, if it is in a compressed format, it should be processed after decoding the complete audio information. The specific way of selecting sample points from the audio file to be tested belongs to the existing mature technology, and will not be d...

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Abstract

The invention discloses a detection method aiming at the time-domain audio LSB insertion, which comprises the following concrete steps: an audio file to be detected is read and the value of each sampling point in the file is integralized; a sampling pair statistical change rule is obtained by observing the values of the sampling points of sampling pairs in the audio file to be detected; insertion strength is analyzed by the sampling pair statistical change rule; whether an insertion strength analysis value a reaches the strength threshold value is judged; if the insertion strength analysis value a is larger than or equal to the strength threshold value, the audio file is detected to contain LSB hiding information; conversely, the detection result is that LSB hiding information is not contained in the audio file. The method can not only detect the existence of LSB hiding information, but also evaluate the insertion strength, thereby ensuring the high detection accuracy, low false alarming rate and low detection missing rate; in addition, the method has simple use and low time complexity. The method can be applied to the field of hiding information detection and is very significant to the illegal hiding communication.

Description

technical field [0001] The invention relates to the field of information hiding detection, in particular to a detection method for time-domain audio LSB steganography. Background technique [0002] In recent years, the research on steganography and digital watermarking technology has been greatly developed. Many steganography and digital watermarking software can be directly downloaded from the Internet, making it possible for ordinary people to use these technologies to realize "covert" communication. This phenomenon objectively requires the advancement of steganographic detection technology in order to detect and prevent illegal information from being transmitted in seemingly invariant ordinary carriers (images, audio and video, etc.). [0003] Among many audio information hiding methods, spatial LSB (lowest bit) hiding is widely used because of its good concealment, large amount of information hiding and easy implementation. Therefore, effective, accurate and reliable d...

Claims

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Application Information

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IPC IPC(8): G10L19/00G10L11/00G10L19/018
Inventor 胡瑞敏曾伟艾浩军高尚
Owner WUHAN UNIV
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