Design of CEK Distributed Management System for Secure DRM Key Management.

With the spread of computer and development of internet service, the varied contents and digital data has been produced, then provided. The digital contents are more efficiently able to be created, produced, provided as well as distributed, on the other hand, its own copyrights seem to be more easily broken than analogue contents due to the convenience to make copies of original contents. Therefore, protecting copyrights recently become the key issue. DRM(Digital Rights Management) is the current technology to protect digital contents from duplication but it sometimes causes problems in the key-management. In this thesis, we would first like to analyze DRM and find out some trouble in the key-management of it. Finally, we will show CDMS(CEK Distributed Management System) to improve DRM out of the key-management problem and continue to study for better key-management system with it.