基于信源选择加密的视频会议系统安全方案设计  

Design of Security Scheme in Videoconferencing System Based on Selective Source Encryption

作　　者：李伟[1] 徐正全[1] 徐彦彦[1] 姚晔[1] 

机构地区：[1]武汉大学测绘遥感信息工程国家重点实验室多媒体通信工程中心,湖北武汉430079

出　　处：《计算机应用研究》2006年第6期129-132,共4页Application Research of Computers

基　　金：湖北省科技攻关计划资助项目(2004AA101C18);武汉市重点科技攻关计划资助项目(20031003021)

摘　　要：视频会议系统的安全性日趋重要,而使用现有的VPN技术、用户身份认证和媒体数据全部加密等安全方法均有明显的局限性。分析了视频会议系统的安全问题现状,研究了现有的几种视频信源选择加密方案,提出并设计了一种选择加密方法,进而基于此方法提出了一种使用混合密码算法体系的视频会议系统安全方案。应用结果表明,该安全方案在保证信息安全的同时,具有满足视频实时传输、保证视频容错特性和图像质量的特点。Security of videoconferencing system becomes very important today. The existing securing methods such as VPN, identity authentication and whole media data encryption are analyzed and pointed out that they all have some obvious limits on the videoconferencing system. A selective source encryption method and its implementation approach are proposed based on the existing selective video encryption method. The security scheme in videoconferencing system using hybrid cryptographies is then introduced. The results show this scheme provides enough security level of video information and guarantees the real-time transportation, error resiliency and image quality.

关 键 词：视频加密 信源加密 多媒体信息安全 视频会议系统 

分 类 号：TN918.4[电子电信—通信与信息系统]