A Robust Information Hiding Method Based on Virtual Data

Abstract

The invention provides a virtual data-based robust information hiding method. Through adoption of the method, large-capacity information hiding in a carrier data stream such as image data can be realized, and the method is mainly used for transmission and storage. The method is characterized in that virtual data and the high-order statistical grouping are introduced, the data are embedded in a data stream to be transmitted, and a receiving end can extract secret information without loss, so that original carrier data can be recovered in a near lossless way. In the method, through certain lossy compression, the receiving end can also recover the secret information and the carrier data with high quality, so that robustness is realized. The method is provided to meet requirements on high hiding capacity, robustness, relatively simple hardware implementation, high quality of a recovered carrier during lossless information hiding, and image data and non-image data; in the method, the hiding capacity is 1 / 8 or 1 / 10 superior to that in other methods, and the recovered carrier quality is high; and for an image carrier, an PSNR can reach up to 54dB.

Description

technical field [0001] The invention relates to a data communication method, in particular to a robust information hiding method based on virtual data, and belongs to the field of communication (such as data communication technology, etc.). Background technique [0002] Information hiding, also known as data hiding, is an important branch of information security. It uses human visual redundancy to embed secret information into the carrier, so as to achieve the purpose of secure transmission of secret information. [0003] Information hiding is divided into lossless information hiding or lossy information hiding. Lossy information hiding such as LSB and DCT information hiding methods, after information hiding, the carrier data has a certain loss, and the information has no loss or a certain loss. Lossless information hiding methods, such as the histogram-based information hiding method, the difference expansion information hiding method, etc., have no loss of carrier data and...

AI Technical Summary

Problems solved by technology

In short, the current anti-compression information hiding methods either have a hidden capacity of less than 1 / 8, or have a hidden capacity of 1 / 8 but lack the robustness of the carrier, and the quality of the restored carrier is not high enough (PSNR value is relatively small)

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