Multicast Copyright Protection System Based on a Trusted Soft-Engine

Multicast Copyright Protection System Based on a Trusted Soft-Engine

Josep Pegueroles (Technical University of Catalonia, Spain), Marcel Fernandez (Technical University of Catalonia, Spain), Francisco Rico-Novella (Technical University of Catalonia, Spain) and Miguel Soriano (Technical University of Catalonia, Spain)
DOI: 10.4018/jbdcn.2006040104
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One of the main problems that remains to be solved in pay-per-view Internet services is copyright protection. In Internet services such as near video on-demand, where multicast is used, watermarking can be directly applied. On the other hand, multicast fingerprinting has been seldom studied because delivering different marked content for different receivers seems a contradiction with multicast basics. In this paper we present a solution to prevent unauthorized redistribution of content in multicast scenarios. The system is based on a trusted soft-engine embedded in the receiver and co-managed by the content distributor. The trusted soft-engine is responsible for the client-side multicast key management functions. It only will allow the decryption and displaying of the actual data if it has previously inserted a fingerprinting mark with the identity of the decoder.

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