基于SCC映射的彩色图像分块压缩加密算法  

Block compression-encryption algorithm for color images coupling SCC chaotic map

作　　者：张昊 王晓庆 谢红薇[2] 刘雨心 ZHANG Hao;WANG Xiao-qing;XIE Hong-wei;LIU Yu-xin(College of Information and Computer,Taiyuan University of Technology,Jinzhong 030600,China;College of Software,Taiyuan University of Technology,Jinzhong 030600,China)

机构地区：[1]太原理工大学信息与计算机学院,山西晋中030600 [2]太原理工大学软件学院,山西晋中030600

出　　处：《计算机工程与设计》2022年第7期1801-1809,共9页Computer Engineering and Design

基　　金：国家自然科学基金项目(61702356);国家重点实验室开放基金项目(BUAA-VR-17KF-15)。

摘　　要：为解决传统的一维混沌映射由于吸引子结构单一而面临的安全问题,提出一种耦合Sine映射和Cubic映射的混沌系统。通过单一映射的控制参数进行相互耦合,使系统的状态信号发生较大的变化;压缩感知针对所提出的耦合Sine-Cubic混沌映射,分析其在混沌性和随机性方面的性能,表明其优于现有的一些2D混沌系统,具有更高安全性能;基于该系统良好的密码学特性,结合分块压缩感知技术和按行扩散的方法,设计图像加密和压缩算法。通过对加解密及压缩结果的实验分析,得出该算法在随机性、敏感性、抗干扰性和抗攻击性等多个方面具有良好性能,安全性和鲁棒性高。To solve the security problem caused by the single attractor structure of traditional one-dimensional chaotic map,a chaotic system coupling Sine map and Cubic map was proposed.By coupling the control parameters of a single map,the state signal of the chaotic system changed greatly.As to the proposed sine-coupling-cubic(SCC)map,it is superior to some existing two-dimensional chaotic systems in terms of chaos and randomness,and it shows higher security performance.According to the cryptographic characteristics of the system,combined with block compressed sensing technology and row diffusion method,the image encryption and compression algorithm was designed.By analyzing experimental result of encryption,decryption and compression,it can be found that the algorithm perform well in the randomness,sensitivity,anti-noise and anti-attack with high safety and robustness.

关 键 词：安全散列算法-384(secure hash algorithm-384 SHA-384) 图像加密 图像压缩 超混沌 Sine-Cubic映射 压缩感知 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]