【摘要】 将UCONpreB(Usage Control:UCON)模型的基本方法与典型的DRM(Digital Rights Management)方案相结合,对DRM方案的静态授权和粗粒度问题进行改进设计.通过增加引用监视器和对主体责任履行的预先决策,设计主体对客体访问时的动态授权和权限细分方法,以此实现DRM系统对数字资源更加灵活、更加有效的访问控制.更多还原

【Abstract】 To improve the DRM scheme in static authorization and coarse- grained by combining the basic method of UCONpreB model with the the typical DRM scheme. Design the method of dynamic authorization and permissions division for the subject access object by add the reference monitor and the main obligationg of pre-decision. The new program will make the access control of DRM scheme more flexible and effective.更多还原