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| Overview of Study on the Technical Architecture of OMA DRM |
| Wei Jing-zhi①;Yang Yi-xian①;Niu Xin-xin② |
①Information Security Center, Beijing University of Posts and Telecommunications, Beijing 100876, China;
②State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Elecommunications, Beijing 100876, China |
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Abstract In order to have a thorough understanding of the technical architecture of OMA DRM specification, and to actively promote creation of the Chinese DRM standard and application research of digital content protection technology, a systematic approach of OMA DRM is presented. The following functions of the latest release of OMA DRM2.0 are analyzed: rights object acquisition protocol, security model, architecture, content format and rights expression language. Then, these features are synthesized to present a complete working mechanism of OMA DRM: working flow and principle of OMA DRM. Finally, the capabilities of the latest release are analyzed by presenting the main difference between OMA DRM2.0 and OMA DRM1.0, and the limitations of OMA DRM2.0.
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Received: 30 October 2006
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2008, Vol. 30 
