数字版权管理中数字权利使用控制研究进展

摘要

数字版权管理(Digital Rights Management,DRM)技术是关系到数字内容产业良性、健康发展的关键技术,其中的数字权利使用控制机制能够保障终端用户合法授权地使用数字内容,以及转移分享相应的权利.在分析预防式和反应式两条DRM研究技术路线的基础上,综述了一般意义的DRM系统和移动DRM中数字权利描述语言与使用控制、权利委托与转移、数字权利可信执行与安全终端平台等方面的国内外研究现状和发展动态,分析、比较了代表性的权利描述语言及形式化使用控制模型.最后指出了数字权利使用控制中存在的开放问题和挑战.%Digital Rights Management(DRM) technology is crucial to a prosperous and meaningful development of digital contents industry, thereinto digital rights usage control mechanisms can guarantee that end users access to contents,transfer and share the corresponding rights by an authorized model. Based on an analysis of preventive and reactive DRM research roadmaps, a survey of research advances and progresses was made on Rights Expression Languages (REL) and usage control, rights delegation and transferring, trusted rights execution and secure terminal platform regarding a generic DRM system and Mobile DRM,as well as representative RELs and formalized usage control models were analyzed and compared. Finally, some open issues and challenges on digital rights usage control were addressed.