基于混沌复合映射的数字图像加解密仿真研究

Simulation of Digital Image Encrypt and Decrypt based on Compound Chaotic Maps

利用连续Lorenz方程与离散的Sinai映射复合产生的序列,将常规的8位真彩图像和索引图像RGB三色置乱,该设计方案能对计算机所能识别的几乎所有图像格式进行快速加密和完整还原,同时从密钥参数、统计特性、运行速度分析了系统的保密性,实验仿真结果用Matlab实现。

Utilizing compound sequences produced by continuous Lorenz equation and discrete Sinai map,this paper puts forward a design scheme on image disorder and recover,changing conventional 8b real color image and indexical image RGB values,this project can almost encrypt all images fast that computer can recognize,and recover them perfectly.Analyzing its security with key parameters,statistical characteristic and enciphering/deciphering speed,implement simulation with Matlab.