Abstract:

We propose an image encryption algorithm based on general twodimensional Arnold transform with keys and quantum chaotic mapping. Firstly, we generate the initial conditions and parameters via the twodimensional logistic mapping. Secondly, we exploit the general Arnold scrambling algorithm with keys to permute the pixels of color components R, G and B. Finally a serial of pseudorandom numbers generated by the quantum chaotic mapping is applied to modify the value of diffused pixels. In order to get the high randomness and the high complexity, the twodimensional logistic mapping and quantum chaotic mapping  are coupled with nearestneighboring coupledmapping lattices.

Key words: Arnold transform, quantum chaotic mapping, twodimensional logistic mapping；nearestneighboring coupledmapping lattices