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 from such an encryption pixel matrix and decoding unit for carrying out this method

摘要

The following method is known for generating an encryption pixel matrix starting from a clear pixel matrix: The encryption pixel matrix and the clear pixel matrix are each pixel matrices in which each pixel is assigned color data. The clear pixel matrix represents an image to be encrypted. The encryption pixel matrix contains the image data of the image, which image data is encrypted using first key information. The encryption pixel matrix contains the first key information used to encrypt the image data, this first key information being encrypted using second key information and encoded in color values of pixels of the encryption pixel matrix. It is proposed: The clear-image pixel matrix is subdivided into at least two subregions. The image data are each encrypted and the result encoded in color values of pixels. The first key information is encrypted using the second key information and the result is encoded into color values of pixels. For each subarea, a marker signature, the pixels containing the encrypted first key information and the pixels containing the image data of the respective subarea are inserted into the encryption pixel matrix. Use for the encryption of image content that should be scrollable on the screen of the target computer.