A Fast Image Encryption Algorithm Based on Self-confusion Method

Abstract

A novel image encryption algorithm based on self-confusion was proposed in this paper. The image encryption process is composed of covering operation, self-confusion and diffusion. The chaotic system was employed to generate one pseudo-random matrix and two pseudo-random sequences for image encryption. The matrix is used to cover the image, and the sequences are used to diffuse the image. The image is shuffled in the self-confusion by its own data, making the proposed image encryption algorithm be plaintext-related. The simulation results show that the proposed scheme has the merits of fast speed and good security, and can be a candidate for image information security.