Method for verifying built-in information hiding suitable for video

Abstract

The invention discloses a method for hiding and verifying built-in information suitable for a video. The method comprises the following steps: performing hash calculation on to-be-embedded hidden information by hashing to obtain a corresponding verification hash value; embedding the verification hash value into a P frame of the video; performing entropy decoding on the video to obtain a DCT coefficient block in an I frame; selecting an embedded block of the hidden information; determining a drift direction of the current embedded block, and selecting a corresponding coupling coefficient; embedding the hidden information and performing entropy encoding; extracting the embedded hidden information from the I frame in a target embedded video and performing hash calculation; and comparing withthe verification hash value in the P frame. Aiming at the situations that in the current video information hiding technology, the information hiding capacity is low, and the security and the robustness are limited, the technical scheme of the present invention provides a method for hiding built-in information of the video and verifying the data integrity, which solves the distortion drift caused by the information embedded in the frame of the video and protects the integrity of the hidden information to some extent.

Description

technical field [0001] The invention belongs to the field of information encryption, and in particular relates to a built-in information hiding verification method suitable for video. Background technique [0002] When a video with hidden information hidden is transmitted over the network, it may be tampered with by multiple intentional or unintentional attacks. Intentional attacks such as D / A, A / D conversion, re-sampling, re-encoding or re-encoding, low-pass filtering, cutting, shifting, transform coding, etc.; unintentional attacks such as equipment failure, network congestion, etc. Data tampering is very fatal to video information hiding. To achieve safe transmission of secret information, it is necessary to ensure that the received data has not been tampered with, which involves data integrity verification. Data verification refers to a verification value calculated on the original data by using a specified algorithm to ensure the integrity of the data. The receiver us...

AI Technical Summary

Problems solved by technology

The technical solution of the present invention aims at the situation that the information hiding capacity is not high and the security and robustness are limited in the current video information hiding technology, and provides a built-in information hiding for H.264 video and can verify data integrity method, which can solve the technical problems of distortion drift caused by information embedding in the H.264 video frame and protect the integrity of secret information to a certain extent

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