An Image Encryption Algorithm Based on Multiple Chaos and Wavelet Transform
Shuo Zhang, Ruhua Cai, Yingchun Jiang, Shiping Guo · 2009
As the low-dimensional chaotic map may degenerate into a cycle and the weaknesses of key. It is a logistic chaotic map combined with three systems of three-dimensional on the image to be encrypted. Firstly, the low-frequency coefficients of the image changed through the sort transformation of chaotic sequence. Secondly, the reconstruction image is encrypted by the three-dimensional chaotic system. The experimental results demonstrate that the encryption algorithm not only has a large key space but also has sensitivity with respect to the secret key and the original image. The encryption algorithm proposed in this paper possesses perfect diffusion and confusion properties and it can resist the various attacks.