An Image Encryption Framework and an Algorithm Based on CNN

A framework of block cipher image encryption based on CNN is proposed to improve the efficiency and security,where the properties of parallel computing and local diffusion of CNN are utilized effectively. An algorithm is also given under this framework. In each round,a cell encrypts one image block data with mixing,XOR and S-box operations first,then XORed with the output of 8-neighboring cells. The algorithm is suitable for VLSI implementation as well as parallel computing. Both theoretical analyses and simulations show that the proposed algorithm is of high security.