An Image Encryption Scheme Based on Random Chaotic Sequence
Yang Hua · 2006
The chaotic properties of chaotic system such as ergodicity, mixing and sensitive dependence on initial conditions and system parameters, are corresponding with some important properties of cryptosystems. In the paper, an image encryption algorithm based on random chaotic sequence is presented. In the spatial permutation process, a discrete standard map is employed. When the chaos sequence, which is used to diffuse the pixels of the image, is generated, the iteration times are hidden to avoid cryptanalysis based on symbolic dynamic. Theoretical analyses and simulated experiment show that, the proposed algorithm has excellent performances against attacks, in particular statistical attack, differential attack and chosen plain image attack.