现有数字版权管理(Digital Rights Management,DRM)技术和安全模型缺乏对细粒度数字内容的灵活和安全使用控制的支持。对一般使用控制模型UCONABC进行扩展,提出了形式化的细粒度使用控制理论模型Gran-UCON,有效提高了使用控制的安全性和灵活性。
Nowadays DRM technology and models available do not support fine-grained,flexible and secure usage control on digital contents.A formal fine-grained usage control theoretical model was proposed based on the extension of generic usage control UCONABC,and the model effectively improves security and flexibility of usage control on the user terminal rendering of digital contents.