Study on image encryption of multi-stage chaotic system with variable parameters
Liu Yi · Computer Engineering and Applications Journal · 2010
Because the computer limited precision effect introduces the chaos degeneration question in a single one-dimensional discrete chaotic system,this paper proposes a method of pseudo-random sequence generation with variable parameters in the process of the generation of the chaotic signal.Compared to one chaos system,the chaos system based on this method has the big pseudo-random sequence cycle,more key quantity,and bigger key space.And the password has a higher safety performance.Based on the pseudo-random sequence generation method,it also puts forward a new image encryption algorithm. The simulation results show that this algorithm is simple,safe,easy to achieve with software and hardware.