混沌掩盖通信在IPTV视频系统中的应用研究  

Application of Chaotic Masking Communication in IPTV Video System

作　　者：黎鹏[1] 翟然 王涌 宗容[1] 丁洪伟[1] LI Peng;ZHAI Ran;WANG Yong;ZONG Rong;DING Hong-wei(Yunnan University, Kunming Yunnan 650091, China;Yunnan Provincial Administration of Press, Publication, Radio, Film and Television, Kunming Yunnan 650031, China)

机构地区：[1]云南大学,云南昆明650091 [2]云南省新闻出版广电局,云南昆明650031

出　　处：《通信技术》2018年第1期184-188,共5页Communications Technology

摘　　要：首先采用Logistic映射和Chen映射两种混沌算法对图片进行加解密,分析图片加密的过程。其次将IPTV系统中传输的视频节目进行拆帧,拆分为连续的多幅图片信息,并对所拆帧的图片用两种混沌算法进行加解密,最后将加解密的图片进行帧合成,完成对视频的加解密。最后,对比分析视频的两种混沌加密算法在密钥量、时间复杂度等方面的性能,最终确定在IPTV系统中以Logistic与Chen映射两种混沌算法组成复合映射生成二重密钥加密视频节目,从而为IPTV节目在互联网中的传输提供安全保障。Firstly, two chaotic algorithms-Logistic mapping and Chen mapping, are used to encript/decrypt the images, and the process of image encryption is analyzed. Then the video programs transmitted in the IPTV system are dismantled and divided into continuous multiple-picture information. And the images of the disassembled frames are encrypted/decrypted by two chaotic algorithms. Then, the encrypted pictures are synthesized, thus to finish encryption/decryption of the video. Meanwhile, the two chaotic encryption algorithms of video are compared and analyzed in terms of key amount, time complexity and so on. Meanwhile, it is determined that the two chaotic algorithms-Logistic mapping and Chen mapping in the IPTV system constitute a composite mapping and generate double-key-encrypted video program, thus to provide security guarantee for the transmission of IPTV program in the Internet.

关 键 词：混沌 IPTV 视频 加解密 性能分析 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TN919.72[自动化与计算机技术—计算机科学与技术]