摘要
随着IPTV的出现和快速发展,如何避免数字产品的非法复制和传播日益成为一个制约其商用的关键因素。针对新的视频/音频标准H.264/AAC码流基于IP网络的实时传输,研究了流媒体的数字版权管理(DRM)技术,提出一套DRM系统的整体结构及其操作流程。重点研究对流媒体系统中音视频加解密模块的设计,陈述对H.264视频码流的AES-CTR加解密的具体方案。实现的具体系统表明该方案可以有效地保障数字内容的安全,并且满足H.264视频码流基于IP网络传输的实时性要求。
With the emergence and rapid development of IPTV,its commercial application has been restricted by the unlawful copy and spread. In the case that the real - time transmission of new emerging video/audio standard H. 264/AAC code stream,the Digital Rights Management （DRM） technology in streaming media systems is researched , then a specific DRM system and its operating mechanism are introduced. The design of encryption and decryption modules are described on emphasis, finally a detailed AES--CTR encryption and decryption scheme used in H. 264 code stream is represented, which is proved effective to protect the digital rights and real - time transmission of the H. 264 code stream.
出处
《现代电子技术》
2006年第22期110-112,共3页
Modern Electronics Technique
