Secure and Scalable Content Sharing Framework for Next-Generation IPTV Service

Seungmin LEE  Dong-Il SEO  

IEICE TRANSACTIONS on Communications   Vol.E94-B   No.10   pp.2723-2731
Publication Date: 2011/10/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.2723
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on New Paradigm on Content Distribution and Sharing)
secure content sharing,  content protection,  SVC encryption,  conditional access system,  digital rights management,  

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Due to an increase in multimedia content and the acceleration of digital convergence, demand for next-generation IPTV service is rapidly growing. IPTV service seamlessly provides both real-time broadcasting and content sharing services on diverse terminals through complex networks. In this paper, a secure and scalable content sharing framework is proposed for next-generation IPTV service. The proposed framework has an advantage over conventional content protection techniques in producing scalable content with transcodable, adjustable, and perceptual security features. Moreover, it ensures end-to-end security over the entire service range based on a single security mechanism. The suitability of the proposed approach is demonstrated experimentally using a practical service scenario with real-world environments. The experiments show that the proposed approach can provide several different levels of content security, from a perceptual level to an almost unintelligible level, while keeping the additional time overhead low. Consequently, it is expected that use of this security technology alone can have a practical contribution in creating new business opportunities for IPTV services.