Research on compound chaos image encryption method with clock-varying
In this paper,we suggest one compound chaos image encryption method with time-varying multilevel initial parameters.This algorithm combines Subsection-linearity mapping,Chebyshev mapping with Logistic mapping in order to disturbing values of each image point and the array of original images based on chaotic second-scrambling way.The chaotic system uses time-varying system clock to change the first chaotic mapping initial parameter,and takes those chaotic sequences which generated by the first chaotic mapping as the initial parameters for the second chaotic mapping,then generate two-dimensional image pixel position scrambling matrix,and uses the same system clock to lock Chebyshev mapping initial parameter,then generate two-dimensional image pixel value transforming matrix.By this way for using the time-varying system clock,The encryption system can randomly changes many initial parameters of chaotic image encryption system to enhance image transmission security,has the capability ofone time one secret.The simulation results show that this algorithm is simple,safe,easy to achieve with software and has huge secret key space.
Image encryption Chebychev mapping Logistic mapping Secret key
MENG Xing WANG XiaoMan CHU Ying
Department of electronics and communication Chang Chun University of Science and Technology Chang Chun,Jin Lin
国际会议
北京
英文
10-14
2012-10-26（万方平台首次上网日期，不代表论文的发表时间）