Integrated confusion-diffusion mechanisms for chaos based image encryption

A new kind of color image encryption algorithm based on integrated confusion-diffusion mechanisms and chaos is put forward. Firstly, generate three values by iterating two-dimensional logistic maps, which are used as the three offset values of RGB components respectively. Secondly, choose three variables from the four-dimensional hyper-chaos to generate four different combinations. Next, XOR operation is conducted between the chosen combination and the original image with three offset values. Thus, integration confusion with diffusion is achieved. The experimental results demonstrate that this algorithm has advantages of large key space and high security, and moreover, it is sensitive to the secret keys, his electronic document is a “live” template.