MP3 audio steganalysis method and device

Abstract

The invention relates to an MP3 audio steganalysis method and device, and the method comprises the steps: obtaining a QMDCT coefficient of an MP3 audio to be analyzed, and obtaining a QMDCT coefficient matrix, i.e., a matrix MQMDCT, and a corresponding QMDCT coefficient absolute value matrix, i.e., a matrix MAQMDCT after preprocessing; the Markov transition probability of the matrix MQMDCT and the Markov transition probability of the matrix MAQMDCT in the row and column directions are calculated, and intra-frame and inter-frame Markov features are obtained; respectively carrying out downsampling on the matrix MQMDCT and the matrix MAQMDCT, respectively calculating the Markov transition probability of each downsampling matrix in the row and column directions, and obtaining a block mean Markov feature; and using the truncation threshold T to obtain a feature vector F, and training through an SVM classifier to obtain an MP3 audio steganalysis detection model.

Description

technical field [0001] The present disclosure generally relates to an MP3 audio steganalysis method and device, and more specifically relates to an MP3 audio steganalysis method and device based on intra-block inter-block correlation. Background technique [0002] Steganography (Steganography) is a discipline about information hiding. It hides communication behavior and content by embedding secret information into multimedia files such as images, text, audio and video, so as to ensure the safe and concealed transmission of secret information, thereby preventing unexpected Anyone other than the recipient knows the delivery of the message or the content of the message. In recent years, with the vigorous development of Internet and cloud computing technology, the field of steganography has increasingly become a hot spot of network technology and information security. Steganography enables the embedding of secret information into digital media without compromising the quality o...

AI Technical Summary

Problems solved by technology

The third party neither perceives the existence of the secret information nor knows the specific content of the secret information

Such dedicated steganographic methods usually have high detection rates, but poor applicability and practicality

With the continuous development of steganographic technology, the steganographic detection technology for specific embedding methods can no longer meet the needs of network information security, so the research on general MP3 steganalysis detection methods has become an urgent technical issue.

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