Abstract: To protect the interest of multimedia data owners, dealers and consumers, the author proposes a general architecture of multimedia data and implements a real DRM topology system called sDRM. It can protect the local and on-line play of multimedia data files. It uses XrML as its rights expression language which achieves the standardization of the rights expression. User name and password, USB device, smart card and finger mark are used in the system to identify the user. As a result, the key problem in DRM of multimedia data is resolved. An experiment is implemented to demonstrate the efficiency of our DRM system.

Key words: rights protect, digital rights management, multimedia data, identity authentication, policy

摘要： 在分析目前多媒体数字版权保护现状问题的基础上，提出了一个通用的多媒体数字版权保护架构，并实现了一个多媒体数字版权保护原型系统，具有透明支持多媒体数据的本地回放和在线播放的能力，使用 XrML 作为权限表达语言，实现了权限表达的标准化，并提出了基于策略的身份认证模型，实现了用户名/密码、USB 设备、智能卡、指纹 4 种身份认证方法，有效地解决了目前多媒体数字版权保护领域的关键问题。实际系统的部署和初步试验结果表明了系统实现了对多媒体数据良好的保护。

关键词: 版权保护, DRM, 多媒体数据, 身份认证, 策略