| 题名 | IPTV中数字版权管理系统许可证服务的研究与实现 |
| 作者 | 杨木伟 |
| 学位类别 | 博士 |
| 答辩日期 | 2008-06-02 |
| 授予单位 | 中国科学院声学研究所 |
| 授予地点 | 声学研究所 |
| 关键词 | IPTV 数字版权管理 负载均衡 可扩展 许可证 |
| 其他题名 | Design and Implementation of License Service of Digital Rights Management System for IPTV |
| 学位专业 | 信号与信息处理 |
| 中文摘要 | 随着网络技术的发展和宽带的普及，视频，游戏，股票，电子商务等宽带网络增值服务业务蓬勃发展。IPTV（Internet protoco1 TV OR Interactive Personal TV）集互联网、多媒体、通信等多种技术于一体，通过互联网络协议（IP）向家庭用户提供包括数字电视在内的多种交互式数字媒体服务的宽带增值业务。IPTV为用户提供丰富和高质量的内容服务，同时也为运营商带来巨大收益。然而，数字媒体内容的版权很容易受到侵害。DRM系统使得运营商有能力控制片源的放映和收费，保护其自身的利益。 论文研究了适用于IPTV的DRM系统结构与实现机制。基于IPTV对在大并发量用户压力下的系统运行性能要求，论文详细设计了DRM系统中的许可证服务子系统，并给出了完整的实现方案。 许可证服务器是DRM系统中提供许可证服务的服务器。基于PKI技术，设计许可证服务器与证书服务器和DRM客户端之间的安全通信协议，实现许可证服务的安全基础；基于加密算法性能测试选择高效加密算法，采用会话数并发管理技术和消息队列与线程池机制，并通过对许可证结构的优化设计，实现许可证服务器性能的提升，增强单台许可证服务器提供许可证服务的能力；利用DRM管理中心的统一设备管理功能，并采用负载均衡机制，实现了许可证服务器的可扩展性，使得许可证服务器在数量上可以便捷的增加，从而为IPTV系统提供高效的许可证服务。 最后，论文对实现的许可证服务器进行了功能、性能、压力、稳定性测试，实验结果表明，论文实现的许可证服务器拥有良好的性能，适于为IPTV系统服务。 |
| 英文摘要 | Value-added services of the wide-band network, such as IPTV( Internet Protocol TV or Interactive Personal TV) , video, game, stock and e-bussiness, developed quickly with new network technologies. The key technologies of IPTV involve the internet, multimedia, communication and so on. IPTV, which can support wide-band value-added services and interactive digital media services to home subscriber through the internet protocol (IP), provides abundant and high-quality content services to users and brings great benefit to operator. But the rights of the digital content are apt to be invaded. Digital rights management technology is one of the key technologies to ensure the benefit for operator. This paper focuses on the design and implementation of license service sub-system for IPTV digital rights management system based on the great amount of users and the requirement of high quality for user tasting. The license server, which provides license service in digital rights management system, includes several key points. The PKI technology is used to design secure communication protocol between servers, such as license server, certificate server and DRM client. It is the security base of the whole system. In order to improve the performance of a single license server, intercurrent session management, message list and thread poll technology are used to design the structure of license server.,and a kind of fast-encryption algorithm was selected by performance test. The scalability of the license server is achieved based on the load balance mechanism. Increasing the number of server devices means the performance enhancement of the ability to provide license service. It is much convenient and efficient. At last, we implement all kinds of tests on the license server, such as functional test, capable test, test under pressure and stabilization test. The test result shows that the license server designed and realized in this paper is applicable for IPTV system. |
| 语种 | 中文 |
| 公开日期 | 2011-05-07 |
| 页码 | 94 |
| 内容类型 | 学位论文 |
| 源URL | [http://159.226.59.140/handle/311008/398]  |
| 专题 | 声学研究所_声学所博硕士学位论文_1981-2009博硕士学位论文 |
| 推荐引用方式 GB/T 7714 | 杨木伟. IPTV中数字版权管理系统许可证服务的研究与实现[D]. 声学研究所. 中国科学院声学研究所. 2008. |
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