Supported by Research Fond for the Doctoral of Higher Education of China,the Hunan Natural Science Foundation under Grant No.05JJ30121;the Scientific Research Fund of Hunan Provincial Education Department under Grant No.08B011;Educational Research Fund of Hunan Provincial Education Department under Grant No.09C013
A new image encryption approach is proposed.First,a sort transformation based on nonlinear chaoticalgorithm is used to shuffle the positions of image pixels.Then the states of hyper-chaos are used to change the greyva...