Encryption pixel matrix; Process for their production; Image file, video file and video data stream with such a pixel matrix, method for generating a clear image matrix based on such an encryption pixel matrix and decoding unit for performing this method

摘要

Method for generating an encryption pixel matrix (10; 110; 210; 310) starting from a clear image pixel matrix (108; 208; 308) with the features: a. the encryption pixel matrix (10; 110; 210; 310) and the clear image pixel matrix (108; 208; 308) are each two-dimensional pixel matrices in which color data are assigned to each pixel, and b. the clear image pixel matrix (108; 208; 308) represents an image to be encrypted, and c. the encryption pixel matrix (10; 110; 210; 310) contains the image data of the image, this image data being encrypted using first key information (S1) and the result in color values of pixels of the encryption pixel matrix (10; 110; 210; 310) is coded, i.e. the encryption pixel matrix (20) contains the first key information (S1) used to encrypt the image data, this first key information (S1) being encrypted using second key information (S2) and in color values of pixels of the encryption pixel matrix (10; 110) ; 210; 310), characterized by the feature: e. the following steps are carried out to generate the encryption pixel matrix (10; 110; 210; 310): the clear image pixel matrix (108; 208; 308) is divided into at least two sub-areas (12a-c; 112a-c; 113a-c ), - the image data of the sub-areas (12a-c; 112a-c; 212a-c; 312) are each encrypted using the first key information (S1) and the result is encoded in color values of pixels, - the first key information (S1) is encrypted using the second key information (S2) and the result is encoded in color values of pixels, - for each sub-area (12a-c; 112a-c; 212a-c; 312) are in the encryption pixel matrix (10; 110; 210 ; 310) a marker signature (30) which inserts the pixels (32) containing the encrypted first key information (S1) and the pixels (40) containing the image data of the respective sub-area.