CP-ABPRE를 활용한 DRM 클라우드 서비스

Abstract

Cloud computing technology that is many studies have been made in order to be applied in various IT environment. one of the important issues in the content services, a DRM(Digital Rights Management) technology for secure use of the content. In the DRM technology, even the content of different DRM technology is applied, interoperability is required for users to be used on devices that use. DRM Cloud architecture to provide these interoperability has been proposed recently. In this paper, by utilizing the CP-ABPRE in DRM Cloud environment, after dispensing the attributes to the user, only users with the attributes that satisfies the access structure is to be able to run the operation of the content. Therefore, to ensure fine-grained access control for content. The license key for protection of content encryption key, it divided into two part, license master key and assistant key. then I enforce access policies based on attributes to distribute the license master key securely, The assistant key allows the distribution after checking whether the attribute is revoked. To apply these methods to solve the problem immediately attributes revocation.