Image encryption technology based on dual chaotic maps

In order to improve the security and efficiency of image encryption algorithm,a dual chaotic system combining piecewise Logistic chaotic map and Cat map is proposed.Firstly,choose a chaotic map from piecewise Logistic chaotic map and Cat map after doing an improved Logistic map,and then confirm the chaotic key.Lastt,he security analysis is performed at the dual chaotic maps.The experimental result shows that the algorithm has numerous key space,higher sensitivity to ini-tial value and stranger resistant attack ability.It is a novel efficient image encryption algorithm.