Image Encryption Algorithm Based on Improved Chen Chaotic System
Zhao Yu-qin · Journal of Chinese Computer Systems · 2014
In order to improve the security of digital image encryption algorithm,a novel image encryption algorithm based on improved Chen chaotic system was proposed in this paper according to the characteristics of the digital image encryption. Firstly,the time delay was introduced into the Chen chaotic system,the chaotic sequence was generated by the improved,chaotic system to improved the pseudo randomness,and then the improved chaotic sequence was used to encrypt the image,finally the simulation test was carried out to verify the effectiveness of proposed algorithm on he key space,key sensitivity,safety etc.. The simulation results show that the auto correlation of chaotic sequence generated by improved chaotic system is very low,and has the huge key space,the proposed image encryption algorithm has strong resist all of attacks comparing with other mage encryption algorithm.