A New Chaotic Algorithm for Image Encryption and Decryption of Digital Color Images

Abstract

This work proposes a new algorithm on Image Encryption and Decryption methods. Chaotic maps are used to preserve the properties of chaos and also to preserve complex non linearity. Repeated permutations are avoided but pixel values are changed by the diffusion function. By incorporating all these features, the proposed cryptosystem avoids all the crypto graphical weaknesses of earlier chaos-based encryption systems. Number of security analysis were carried out on the new algorithm and simulation results show that encryption and decryption are good and the proposed chaotic algorithm is proven to be the good procedure in terms of robustness.