摘要
提出一种视频多点广播立即源认证模型。在TESLA多点广播源认证的基础上,采用基于查找表的视频水印算法,将视频重要分量的消息认证码、公开密钥和立即认证散列信息作为数字水印嵌入到视频的非重要分量中,达到视频数据的立即源认证;同时节约一定的传输带宽,并给出公开延迟时间间隔的一种计算方法。
A novel video multicast instant source authentication model based on digital video watermarking and TESLA (Timed Efficient Stream Losstolerant Authentication) protocol is proposed in this paper. The digital watermark which composes of the MAC (Message Authentication Code) of the significant video content, the key and instant authentication data is embedded into the insignificant video component by the MLUT (Modified Look Up Table) video watermarking technology.So the video packets can be authenticated instantly without large volume buffer in the receivers. In addition, we give a method to calculate the key disclosure delay (number of intervals).
出处
《现代电子技术》
2005年第14期68-70,共3页
Modern Electronics Technique
