Information hiding method of three-dimensional reference matrix based on mini sudoku matrix

Abstract

The invention discloses an information hiding method of a three-dimensional reference matrix based on a mini sudoku matrix. The method comprises the following steps: firstly, constructing a 3D Cubic reference matrix model; secondly, according to the difference table, the secret information value and the pixel value characteristics, carrying out addressing modification in an external hidden layer in a split-axis mode, hiding secret information in the external hidden layer, and obtaining a corresponding spatial search area; then, carrying out fixed value modification in the corresponding space search area, and hiding secret information in the internal hidden layer; and finally, modifying the value of the pixel group according to the coding coordinates of the inner and outer hidden layers toobtain a secret image embedded with secret information. Experimental results show that the method not only can realize better image quality and higher embedding capacity, but also has very considerable embedding efficiency, and can realize real-time embedding. In addition, according to the algorithm provided by the invention, the three-dimensional reference matrix can still be derived into the N-dimensional reference matrix, and the time efficiency of information embedding is still ensured.

Description

technical field [0001] The invention belongs to the field of reference matrix information hiding, and in particular relates to an information hiding method of a 3-dimensional reference matrix based on a mini Sudoku matrix. Background technique [0002] In the Internet age, a large amount of digital information is transmitted through an open network, so how to ensure the security of information has become a global discussion issue. Information hiding is a technique of hiding secret data in images, which can effectively prevent secret data from being intercepted by malicious attackers. [0003] Today, there are two typical schemes in the field of information hiding that can improve the security of information during transmission. One of the methods is to encrypt data through encryption algorithms such as asymmetric encryption algorithm (RSA) and data encryption standard (DES), but this encryption method will form irregular pictures, which is very easy to cause malicious attac...

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Problems solved by technology

One of the methods is to encrypt data through encryption algorithms such as asymmetric encryption algorithm (RSA) and data encryption standard (DES), but this encryption method will form irregular pictures, which is very easy to cause malicious attacks reader's attention

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