- Title:
- Encryption and DRM for Scalable Multimedia
- Presenter:
- Dr Bin Zhu,
- Date:
- November 04, 2005
- Abstract:
- Scalable coding is a technology that encodes a multimedia signal in a scalable manner where various representations can be extracted from a single codestream to fit a wide range of applications. Several standard scalable coding technologies such as MPEG-4 Fine Granularity Scalability and JPEG 2000 offer fine granularity scalability (FGS). This FGS poses great new challenges to the design of encryption systems for scalable media in Digital Rights Management (DRM) as well as offer new opportunities. Protection should not impair the scalabilities offered by a scalable codec. In this talk, I will present our work on encryption and DRM of scalable multimedia. The encrypted codestream still preserves the original or a little coarser granularity of scalability. FGS also allows access to different scalable types such as resolution, quality, etc. A single codestream protected with our DRM supports different people to access to different types and different layers to fit different playing devices and applications. It also allows preview and content-based search and filtering. We’ll present an efficient key management for such a system that minimizes the need to send keys in licenses and minimize the overhead to the file size.
Bio
Bin B. Zhu has been with Microsoft Research (MSR) Asia as a researcher since Dec. 2001, where he has been working on content protection and digital rights management, watermarking, multimedia processing and communications, P2P networks, encryption algorithms, etc. Before he joined MSR Asia, he worked as a cofounder and Lead Scientist at Cognicity for more than 4 years. Cognicity was a pioneer in the field of audio watermarking and music promotion and advertising enabling technologies. Dr. Zhu is a senior member of IEEE. He has published two book chapters and more than 40 peer-reviewed journal and conference papers. He has been awarded 8 US patents with more than 10 pending US patent applications. Dr. Zhu received his B.S. degree in physics from the University of Science and Technology of China in 1986, and M.S. and Ph. D. degrees in electrical engineering from the University of Minnesota, Twin Cities in Sept. 1993 and Dec. 1998.
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