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本文提出了一种新的基于H.264标准的视频加密算法结构。使用改进的FMO机制(advanced-FMO mechanism)将具有相关性的宏块打入不同的Slice中,通过对FMO子图的加密达到对整个视频内容进行加密的目的。本文提出的加密算法具有很高的实时性,加密过程可以和编码过程并行执行。同时本算法还可以和传统的加扰算法结合,进一步提高视频的加密效果。
This paper presents a new H.264 video encryption algorithm based on the structure of the standard. Using the advanced FMO mechanism, the correlation macroblocks are scrambled into different slices, and the entire video content is encrypted through the encryption of the FMO sub-picture. The encryption algorithm proposed in this paper has a high real-time, encryption process can be carried out in parallel with the encoding process. At the same time the algorithm can also combine with the traditional scrambling algorithm to further improve the video encryption effect.