基于MATLAB的光学图像加密解密技术  

Optical image encryption and decryption technology based on MATLAB

作　　者：刘越 石翠萍[1] 史文强 梁潇 LIU Yue;SHI Cuiping;SHI Wenqiang;LIANG Xiao(College of communication and Electronic Engineering,Qiqihar University 161000,China)

机构地区：[1]齐齐哈尔大学通信与电子工程学院,黑龙江齐齐哈尔161000

出　　处：《长江信息通信》2022年第2期79-80,83,共3页Changjiang Information & Communications

基　　金：齐齐哈尔大学教育科学研究项目(项目号:GJZRYB202002);黑龙江省省属高等学校基本科研业务费科研项目(项目号:135509136);黑龙江省科学基金项目(项目号:LH2021D022)。

摘　　要：为保护图像信息在通信的传输过程中不被未授权的人员轻易的获取。图像加密解密技术应运而生,并得到长足发展。文章根据对常用的图像加密技术的探索,设计并实现基于混沌理论、像素级别打乱和隐写术的图像加密算法。利用MATLAB软件对图像像素打乱后,与生成的混沌序列按位异或得到加密图像,最后再将加密图像隐写入载体图像中从而完成最后的加密操作。这样操作后,增加破解者的破解难度,同时也让图像在传输过程中不易引起攻击者的警觉。In order to protect the image information from being easily obtained by unauthorized persons during the transmission process of communication.Image encryption and decryption technology came into being and developed rapidly.This paper designs and implements image encryption algorithms based on chaos theory,pixel-level scrambling and steganography,based on the exploration of commonly used image encryption techniques.After the image pixels are scrambled by MATLAB software,the encrypted image is obtained by bitwise XOR with the generated chaotic sequence,and finally the encrypted image is cryptically written into the carrier image to complete the final encryption operation.After this operation,in addition to increasing the difficulty of cracking,it also makes it difficult for the image to arouse the alertness of the attacker during the transmission process.

关 键 词：图像加密 混沌序列 隐写术 MATLAB 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]