混沌掩盖通信在IPTV系统中的应用研究  

Research and Application of the Chaotic Masking Communication in IPTV System

作　　者：黎鹏[1] 翟然 宗容[1] 丁洪伟[1] 郭嘉 LI Peng;ZHAI Ran;ZONG Rong;DING Hong-wei;GUO Jia(Yunnan University, Kunming 650091, Yunnan;State Administration of Press, Publication, Radio, Film and Television of Yunnan Province, Kunming 650031, Yunnan)

机构地区：[1]云南大学信息学院,云南昆明650091 [2]云南省新闻出版广电局科技处,云南昆明650031

出　　处：《电脑与电信》2018年第1期5-9,共5页Computer & Telecommunication

基　　金：国家自然科学基金;项目编号:61461053;61461054;云南省教育厅基金;项目编号:2016zzx012;云南大学教改项目;项目编号:2016Y18

摘　　要：文章选取Logistic映射和Chen映射两种混沌算法对IPTV系统中的音频和图像进行加密分析,给出了音频信号的两种混沌映射加密过程,构建了初值和调制压缩系数两个混沌密钥。接着对图像信号采用了两种混沌映射的加密方法,对比分析了两种算法在密钥量、敏感性、时间复杂度等方面的性能。最终确定以Logistic与Chen映射两种组成复合映射,生成二重密钥,对音频和图像进行加密,为IPTV系统在互联网中的传输提供安全保障。Based on the chaotic Logistic map and Chen map,this paper analyzes the encryption of audios and images in the IPTV system,proposes two chaotic encryption process of audio signal,and obtains the two chaotic keys of the initial value and the compression coefficient.Then it uses the two chaotic encryption methods in image signal,and compares the performance of two algorithms in terms of secret key amount,sensitivity,time complexity and so on.Ultimately,a new complex map is synthesized by Logistic map and Chen map,double keys are generated to encrypt the audio and image signals,so as to provide security for the transmission of IPTV programs in the internet.

关 键 词：混沌 IPTV 加解密 性能分析 

分 类 号：TN918.6[电子电信—通信与信息系统]