Video steganographic method based on macro block partition mode disturbance

Abstract

The invention relates to a video steganographic method based on macro block partition mode disturbance. The method includes an embedment process of secrete information and an extraction process of the secrete information. Two hidden channels are built in the embedment process of the secrete information, the secret information is embedded through different steganographic codes, and the secrete information is extracted from the two hidden channels sequentially in the extraction process of the secret information. Preferably, the two hidden channels are built through the steganographic codes including a Syndrome Trellis Code and a Wet Paper Code, and embedment and extraction of the secret information are carried out. Various steganographic codes are used comprehensively to carry out video steganography, high embedment efficiency is achieved, attack of an existing video steganographic analysis method can be resisted effectively, and the video steganographic method is especially suitable for high-safety hidden communication; different macro block division mode disturbance costs can be made according to different application scenes, and high flexibility is achieved.

Description

technical field [0001] The invention belongs to the field of information security, and relates to a video steganography method based on disturbance of macroblock division mode under the H.264 / AVC video coding standard and the application of the method in covert communication. Background technique [0002] Information hiding technology in the field of information security consists of two parts: steganography and steganalysis. The former mainly studies how to embed secret information into images, audio, video and other carriers to achieve the purpose of covert communication, while the latter uses machine learning and pattern recognition and other methods to distinguish between ordinary carriers and steganographic files. [0003] Generally, when designing a steganographic algorithm, the following factors need to be considered comprehensively: [0004] 1) Imperceptibility: It is required that the carrier before and after the steganography is indistinguishable from the human sen...

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Problems solved by technology

[0008] 5) Security: Even if you have prior knowledge of the steganographic algorithm, the existing steganalysis methods cannot distinguish between ordinary carriers and files steganographiced by the algorithm with a high enough accuracy rate

[0022] 1) The robustness is generally not as good as the airspace video steganography algorithm;

[0023] 2) The part that can be modified in the embedding domain is relatively limited, so the embedding capacity is often not as good as the spatial domain video steganography algorithm;

[0024] 3) The carrier is greatly disturbed before and after steganography, and the embedding efficiency is low;

[0025] 4) Low security, basically there are targeted steganalysis methods

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