Improved Color Image Encryption Algorithm Based on Chaotic System

Abstract

This paper presents an improved encryption algorithm for color images based on chaotic system. First, the chaotic sequences generated by chaotic system, using encryption system randomly generated a set of keys, and then using the keys to scramble the image pixel position and pixel values, which is a good way to avoid the key sequence unchanged of the HIE encryption. To against attack, the algorithm encrypted in a way of one time one keys. In addition, the paper diffused encrypted three color components R, G, B of a picture again, to avoid the drawbacks of breaking one of the components can know the all plaintext messages. Experimental results show that the proposed algorithm has good encryption and anti-jamming performance.