流媒体加密技术研究

从传统密码技术入手,在结合流式媒体的特征基础上对其加密/解密机制进行了深入的研究,分析加密方法满足流媒体实时性应考虑的因素,推导出只有实现了“解密速度>[数据包长/(该帧的指定解码时间—该帧最后数据包的到达时间)]”的加密算法才能够满足M PEG-1数据流实时加密的要求.目的是将传统的密码技术与新兴的流媒体技术相结合,实现多媒体数据的实时加密保护.

Research on Encryption Technology for the Streaming Media

Based on the characteristics of encryption technology,this paper conducts an in-depth study of the encryption / decryption mechanism for streaming media from the technical aspect of traditional passwords.Factors to be considered for the real-time streaming media encryption methods are analyzed.The requirement of the MPEG-1 data stream real-time encryption can be satisfied only when the realization is derived of "the decipher speed >[the data packet to be long/(This frame designates decoding time minus this final data packet arrival time]".The purpose of implementing the multimedia data real-time encryption protection depends on how the target is unified with the traditional password technology and the emerging stream media technology.