【摘要】 提出了一种视频会议系统的安全解决方案.该方案在基于H.323的视频会议系统中引入认证中心,使用基于X.509的数字证书对用户终端进行单向认证和密钥交换;使用所提出的二维混沌流密码系统有选择地对压缩后的视频数据进行加密来保证视频流的安全性.实验结果和分析表明,该方案在保证实时性和容错性的同时,从身份认证和数据加密两个方面大大提高了视频会议系统的安全性.更多还原

【Abstract】 Accrediting to H.323,a solution is presented to improve the security of videoconferencing system.Centre authentication was introduced into the videoconferencing system based on H.323,a one-way authentication method based on X.509 digital certificate of username-password authentication method was used,and a video steam encryption method using two-dimensional chaotic stream encrypting algorithm was advanced.Analytical results demonstrate the security of the videoconferencing system is remarkably improved by the solution with real-time and fault-tolerance through the identity authentication and data encryption.更多还原