METHOD FOR EMBEDDING CONFIDENTIAL INFORMATION IN COLOR IMAGE Russian patent published in 2021 - IPC H04L9/00 H03M13/00 

FIELD: information security.

SUBSTANCE: invention relates to the field of information security. The selected container is divided into square areas of pixels of a certain size, and the size of the square area of pixels is selected based on the hiding detail. Each subsequent square area of pixels is obtained by shifting the previous square area of pixels to the right by one pixel, and when the border of the image width is reached, the next square area is formed from the beginning of the next line. Next, new square zones are formed by shifting the previous square zone by one pixel until the border of the image width is reached, after which the actions are repeated, while the displacements are performed until the pixels in the selected container are completely enumerated. Then the value of pixels in the square area of pixels is calculated, in each square area of pixels a linear transformation of the elements is performed. The modulus of the determinant of each square area of pixels is determined. The obtained values of the moduli of the determinants of the square areas of pixels are ranked. The information is embedded in the bits of only one pixel of all three color components in a square area of pixels.

EFFECT: increasing the volume of embedded information and resistance to steganalysis methods.

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