| 适用于P2P数字版权管理系统的密钥分发策略 | |
| 张峣 ; 刘源 ; 袁春 ; 钟玉琢 ; ZHANG Yao ; YUAN Chun ; ZHONG Yu-zhuo | |
| 2010-07-15 ; 2010-07-15 | |
| 会议名称 | 第十四届全国图象图形学学术会议 ; CNKI |
| 关键词 | P2P 网络 数字版权管理 广播加密 授权区间 P2P Networks Digital rights management Broadcast encryption Authorized domain TN918 |
| 其他题名 | A Key Scheme Adaptable to P2P-based Digital Rights Management System |
| 中文摘要 | P2P 网络具有可扩展性灵活、传输效率高、容错性良好的特点。已被广泛应用于媒体数字内容的共享和分发;但与此同时,其高效性也便捷了盗版数字内容的传播,侵害了版权所有者的利益,阻碍了数字产业的发展。如果既要利用 P2P 架构便捷的分发内容,又要运用安全机制控制内容的访问,搭建支持数字版权管理的 P2P 内容分发系统将是行之有效的方法。而若将传统的 C/S 结构的版权管理体系直接植入现有的 P2P 架构,会影响 P2P 架构的可扩展能力和负载均衡特性,给整个系统造成瓶颈和拥塞。因此,本文实现了一种基于 P2P 网络的数字版权管理系统,其中,提出了基于广播加密思想和授权区间组织形式的密钥分发策略,利用网络节点在内容交换过程中学习到的"局部性"信息,并借助节点的协同工作,完成证书、密钥等安全内容的 P2P 模式的高效分发,从而减少认证中心的通信开销,平衡系统负载,缓解系统瓶颈。无论是对媒体文件的共享,还是对流媒体的直播,都将提供一个可扩展、传输快、管理规范的数字内容传播平台。; P2P networks has been widely deployed to the sharing and distribution of multimedia digital content for its flexible scalability,transmission efficiency and fault tolerance.Meanwhile,however,its high efficiency also facilitates dissemination of pirate content,which infringes the benefits of copyright owner and impacts the development of digital industry.To achieve both efficient distribution with P2P architecture and access control with security mechanism,the most effective approach might be to build a P2P content distribution system supporting DRM function.Nevertheless, conventional client/server model for DRM contradicts scalability and load balance of P2P structure and will cause system bottleneck while being integrated into existing P2P framework directly.So,this paper implements a P2P-based DRM system,in which we propose an adaptable key distribution scheme based on broadcast encryption concept and authorized domain organization.The system takes full advantage of‘locality’information learned during process of data exchange between peers and realizes efficient distribution of cryptographic information such as certificates and keys in a peer-to- peer mode,thereby reducing communication cost and alleviating system bottleneck.It will be a scalable,effective and reliable platform for digital content transmission,either in form of media file sharing or live streaming. |
| 会议录出版者 | 清华大学出版社 |
| 语种 | 中文 ; 中文 |
| 内容类型 | 会议论文 |
| 源URL | [http://hdl.handle.net/123456789/69075]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 张峣,刘源,袁春,等. 适用于P2P数字版权管理系统的密钥分发策略[C]. 见:第十四届全国图象图形学学术会议, CNKI. |
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