多媒体社交网络中的数字内容安全分发研究

多媒体社交网络(Multimedia Social Networks, MSN)的出现与快速发展，使用户间的信息交换与共享变得更 加便利，而随意分发受版权法律保护的数字内容的现象也愈演愈烈。这种开放式网络环境下的数字版权管理(Digital Rights Management, DRM)问题已成为目前的一个开放问题和重要挑战。针对社交网络用户节点间的数字内容共享 与传播行为，并基于支持可信验证代理方的远程证明，提出了多媒体社交网络环境下的数字内容分发体系框架及其安 全协议。与现有典型DRM方案的对比分析表明，新方案结合可信计算高安全性的用户终端平台，实现了安全增强、 可信、可控的数字版权保护机制，从而满足了用户终端平台的隐私保护需求。

Research on Secure Distributions for Digital Contents in Multimedia Social Networks

The emerging and rapid development of Multimedia Social Networks make information changes and shares a- mong users much more convenient, but the phenomenon of unauthorized distributions on copyrighted digital contents becomes more serious. Digital rights management is an open issue and key challenges in the open network. With regard to behaviors of digital contents share and dissemination among social network user nodes, a framework and its secure protocol for digital contents distribution were proposed based on a trusted attestation proxy party-enabling remote at- testation in MSN. I}he proposed DRM scheme was analyzed and compared with the typical ones available, and the re- sups denote that combined with the trusted computing-supported high-level security user terminals, the novel method implements enhanced security, trustworthy and controllable mechanism on digital copyrights protection, and meets the requirement for platform privacy protections.