A DRM security architecture for home networks
Proceedings of the 4th ACM workshop on Digital rights management
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Proceedings of the 4th ACM workshop on Digital rights management
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Proceedings of the 5th ACM workshop on Digital rights management
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Proceedings of the 5th ACM workshop on Digital rights management
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Proceedings of the International Conference on Advances in Computing, Communications and Informatics
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In this paper we look at the problem of interoperability of digital rights management (DRM)systems in home networks. We introduce an intermediate module called the Domain Interoperability Manager (DIM) to efficiently deal with the problem of content and license translation across different DRM regimes. We also consider the threat model specific to interoperability systems, and introduce threats such as the cross-compliancy and splicing attacks. We formalize the adversary model and define security of an interoperable DRM system with respect to this adversary. We finalize by proposing detailed protocols which achieve our security requirements. In order to achieve these requirements we provide novel applications of recently proposed proxy resignature and proxy re-encryption algorithms.