Abstract: Based on the analysis of the architecture of digital right management system, This paper puts forward a digital right managementrole-based access control model(DRMRBAC). Applying the model can decrease the cost of management and improve the extensibility of system,This model produces faster and accurater predicticm with less comsuption of system resource, adapts well, obtains more competition advantanges.

Key words: Role-based access control model(RBAC); Digital right management (DRM); Licenses; Conditions

摘要： 在对数字版权管理系统分析的基础上，针对数字版权管理系统的结构特点，提出了一种数字版权管理系统的角色访问控制模型。应用该模型能够减少管理开销，并能提高系统的可扩展性。该模型预测速度快，准确度较高，有很好的适应性和良好的竞争优势。

关键词: 角色访问控制；数字版权管理；许可；条件