数字图像压缩技术和数字图像加密技术应运而生，并且被广泛应用到多媒体、通讯、医学等等各个领域。

So the digital image compression technology and the digital image encryption technology have been born and applied in many field, such as multimedia, communication, medicine and so on.

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最后，本文给出了一个基于此混合加密方案的多媒体会议系统的实现。

Lastly, this paper give a realization of distributed multipoint multimedia conferences using this encryption scheme.

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讨论了保障多媒体通信安全的几个关键技术，分析了流媒体加密的几种方式。

This paper discusses vital technique for secure communication of multimedia. It analyzes some ways for stream data encryption.

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