A Novel Image Encryption Algorithm Based on Improved 3D Chaotic Cat Map

In this paper, an image encryption algorithm based on improved 3D cat map is proposed. The new algorithm employs Henon map chaotic sequence to generate control parameters of shuffling and uses improved 2D Logistic map sequence to substitute grey values. It cannot only effectively encrypt images, but also can resist cipher analyzers´ attack by periodicity of cat map. Experimental results and security analysis show that the algorithm can be easily implemented and its encryption effect is satisfactory. Moreover, the algorithm possesses high security in terms of the resistance to exhaustive attack, statistical attack and cipher-text-only attack..