基于整数动态耦合帐篷映射的视频加密算法  

A VIDEO ENCRYPTION ALGORITHM BASED ON INTEGER DYNAMIC COUPLING TENT MAP

作　　者：刘博 刘建东[1] 陈飞[1,2] 钟鸣 张世博[1] Liu Bo;Liu Jiandong;Chen Fei;Zhong Ming;Zhang Shibo(College of Information Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China;College of Information Science and Technology,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京石油化工学院信息工程学院,北京102617 [2]北京化工大学信息科学与技术学院,北京100029

出　　处：《计算机应用与软件》2019年第12期309-315,328,共8页Computer Applications and Software

基　　金：北京市教委面上项目(KM201810017005)

摘　　要：针对高维混沌加密算法导致视频编码时耗过大的问题,引入整数动态耦合帐篷映射优化模型,提出一种有效的H.264/AVC视频加密算法,减少加密数据量,同时保证视频加密的安全性,兼顾视频的加密效率和加密安全。对加密算法的两级方案的加密效果进行了主客观评价和安全性分析。结果表明,加密方案的密钥空间大、伪随机序列生成效率高、抗攻击性强,同时压缩比和视频格式不变、加密时耗低,满足了视频加密中的实时性和安全性需求。Aiming at the problem that high-dimensional chaotic encryption algorithm leads to the excessive consumption of video coding,we introduced the integer dynamic coupling tent mapping optimization model and proposed an effective H.264/AVC video encryption algorithm.The algorithm reduced the amount of encrypted data and ensured the security of video encryption,which considered both the encryption efficiency and encryption security of the video.The subjective evaluation,objective evaluation and security analysis were made for the encryption effect of the encryption algorithm with two schemes.The results show that the encryption scheme has large key space,high efficiency of pseudo-random sequence generation,strong anti-attack ability.The compression ratio and video format remain unchanged,and the encryption time consumption is low.It meets the real-time and security requirements of video encryption.

关 键 词：视频加密 H.264/AVC 动态帐篷映射 视频编码 耦合映象格子 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]