Image scrambling optimization algorithm based on mixed chaos system and bit decomposition
Xiaohu Ma · Computer Engineering and Applications Journal · 2011
For the existence of invalid-keys in current image scrambling algorithms based on chaos system,an extended algorithm is presented after the analysis of an image encryption algorithm based on chaotic sequence and bit exchange.Chaotic sequence is generated by mixed chaotic maps of Logistic and Chebyshev in the algorithm.Pixels of image are redistributed,and the gray values are encrypted by the intercepted binary chaotic sequence according to their location information.The experimental results show that the algorithm has good image scrambling effect and better safety.