Digital Image Scrambling Method Based on Permutation Transformation

Used the strong irregularity of permutation transformation, a digital image scrambling encryption method is proposed.Using the chaos sequences obtained by chaos system to generate the required permutation arrays and through match operation of the array to achieve the purpose of exchange the rows (columns) of image, the purpose to encrypted images is arrived.The proposed method has no limitation for the size of image.Simulation results show that the proposed method has the ideal encryption effect and higher security.