APPARATUS AND METHOD FOR DRM/CAS SERVICE USING SECURITY CONTEXT

摘要

PURPOSE: A digital rights management/conditional access system (DRM/CAS) service apparatus and method are provided to reduce throughput and to simplify a processing process and to effectively perform contents and service protection. CONSTITUTION: A registration service server (210) certifies a device and a secure trusted platform (STP) of the device according to a registration request and a DRM/CAS service request from the device and produces device based context (304). A DRM/CAS service server (220) produces DRM/CAS security context by receiving the device based context (308). A DRM/CAS software service server (230) receives the DRM/CAS security context and produces a DRM/CAS software package which includes the DRM/CAS security context and DRM/CAS software. The DRM/CAS software service server provides the DRM/CAS software package to the device (314). [Reference numerals] (100) Device; (210) Registration service server; (220) DRM / CAS SW service server; (302) STP of the device according to a registration request (secure trusted platform); (304) Produce a context based on a device; (306) Request to produce a DRM/CAS security context; (308) Generate a DRM/CAS security context; (310) Transmit the DRM/CAS security context; (312) Request to produce a DRM/CAS software package including the DRM/CAS security context; (314) Produce the DRM/CAS software package; (316) Transmit the requested DRM/CAS software package; (318, 320) Download and install the DRM/CAS software package; (324) Install the DRM/CAS software package; (326) Check the search; (328) Request to activate the DRM/CAS software package; (330) Activate the DRM/CAS software package; (332) Check the activation of the DRM/CAS software package; (AA) DRM/CAS service servers