分数阶超混沌Chen系统的视频加密通信  

A Mthod of Video Encryption Communication based on Fractional Hyperchaotic Chen System

作　　者：何建斌[1] 吴智雄[1] 余艳莉[1] 李小娟[1] 

机构地区：[1]闽南师范大学数学与统计学院,福建漳州363000

出　　处：《漳州师范学院学报（自然科学版）》2013年第2期4-10,共7页Journal of ZhangZhou Teachers College（Natural Science)

基　　金：福建省自然科学基金项目(2011J01025)

摘　　要：提出了一种分数阶超混沌系统的视频加密的方法.为了减弱相邻像素间的相关性,先用一种循环算法对从视频流中分解出来的图像进行像素置乱.然后利用分数阶超混沌Chen系统产生的混沌序列对视频和音频进行加密编码,从而达到双重加密的效果.最后通过密钥对加密视频进行解密.仿真表明该方法具有良好的加密效果及较强的安全性.A method of video encryption based on fractional hyperchaotic system was proposed.In order to weaken the correlation between pixels,firstly,the video stream was decomposed into images,then the position of images＇ pixels was scrambled by a cycle of algorithm.Secondly,the fractional hyperchaotic sequences of Chen system are used to encrypt the audio and video,so that the original video was encrypted effectively.Finally,we could use the key to decrypt the encrypted video.Simulations show that the method has a high efficiency and strong encryption security.

关 键 词：像素置乱 混沌加密 视频编码 安全通信 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]