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一种可伸缩性视频加密方案

DOI: 10.11834/jig.2006010233

Keywords: 视频加密,小波系数,运动矢量

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Abstract:

随着网络的不断普及和发展,数字视频在网络中有了越来越多的应用,随之也提出了视频安全性问题,通过视频加密可以很好地解决此问题.为了满足网络对视频加密的要求,设计了一种可伸缩性视频加密的方案.考虑到小波的多尺度性,建立了一个基于小波变换的视频压缩平台,在此平台上进行了仿真加密实验,即在压缩的过程中从小波系数置乱、系数随机翻牌、运动矢量置乱等方面进行加密,并与其他算法进行了比较实验.实验结果表明,该方案具有加密效果好,密钥量较低,安全性好等优点,同时对压缩比和压缩效率有较好的保持,是一种高效的视频加密方案。

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