基于FPGA的四维超混沌系统在视频加密的应用  

Application of four-dimensional hyperchaotic system in video encryption based on FPGA

作　　者：胡新伟 柴志军[1] 刘宇平 于志远 HU Xinwei;CHAI Zhijun;LIU Yuping;YU Zhiyuan(College of Electronic Engineering,Heilongjiang University,Harbin 150080,China)

机构地区：[1]黑龙江大学电子工程学院,哈尔滨150080

出　　处：《黑龙江大学自然科学学报》2024年第5期623-630,共8页Journal of Natural Science of Heilongjiang University

基　　金：黑龙江省省属高等学校基本科研业务费项目(2023-KYYWF-1435)。

摘　　要：针对视频数据安全的问题,构造了Lyapunov指数为LE_(1)=1.75、LE_(2)=0.59、LE_(3)=-0.12和LE_(4)=-27.51的四维超混沌系统,该超混沌系统具有高度复杂性和较大的密钥空间,通过可编程门阵列(Field programmable gate array,FPGA)应用于实时视频加密。在视频加密的过程中,用OV5640摄像头采集视频信息数据,用超混沌系统产生伪随机序列,并对采集后的视频数据进行加密。对该视频加密进行硬件实现和安全性测试,测试结果表明,该加密具有安全性高和易扩展的特点,具有良好的加密效果。Aiming at the problem of video data security,the four-dimensional hyperchaotic system with Lyapunov index of LE_(1)=1.75,LE_(2)=0.59,LE_(3)=-0.12 and LE_(4)=-27.51 is constructed.The hyperchaotic system has high complexity and large key space,and is applied to real-time video encryption by Field programmable gate array(FPGA).During the process of video encryption,the collection of video information is collected with OV5640 camera,and the pseudo-random sequence is generated by the hyperchaotic system,and the collected video data are encrypted.The hardware implementation and security testing of the real-time video encryption are conducted.The test results show that the encryption has high safety,easy extension,and good encryption effect.

关 键 词：超混沌 FPGA 视频加密 视频信息安全 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]