A new kind of encryption and decryption of RGB colour image using permutation matrix multiplication
N. Avinash, Jaraldpushparaj Simon, T. Sathinathan, Britto Antony Xavier G · AIP conference proceedings · 2022
An enhanced technique of colour image encryption based on permutation matrix key encoding is proposed. To encrypt the colour image, a separation into Red, Green and Blue (R,G,B) channels have been applied. Each channel is encrypted using a technique called double permutation key encoding to assigning a new colour to every pixels of RGB colour image. Also we introduce a new technique of partite block encryption method. The detail analysis of encryption of a image with 9-pixels including the number of possible encryptions are provided. Moreover, the decryption process is clearly expressed by Matrix representation.