Key management in multi-distributor based DRM system with mobile clients using IBE

Abstract

Abstract-Current Digital Rights Management (DRM) systems support only two-party systems, involving the package server and purchaser. However, for a scalable business model of transacting digital assets, a multi-party DRM system is often necessary which involves more than one distributors, who can promote and distribute the content in regions unknown to the package server. We propose a key management scheme for a DRM system that involves more than one distributors with the DRM client's flexibility of choosing a distributor according to his own preference. For instance, a mobile DRM client may contact to a distribution server who is nearest to him by location or who offers promotions/discounts on the price or offers more commissions. In our scheme, the package server does not trust the distribution servers or the license server. The encrypted digital content sent by a package server can only be decrypted by the DRM client who has a valid license and is protected from attacks by other parties/servers in the system. Moreover, we use Identity-Based Encryption (IBE) that incurs less computation cost and storage as certificate managements are not necessary and certificate verifications are no longer needed. These features make our DRM system suitable for more effective business models/applications with the flexibility in deciding a wide range of business strategies as compared to the existing works.

Privacy preserving content distribution framework for multidistributor DRM systems

“…Deploying multiple distributors in diverse geographical regions and compiling content distribution with location-tracking techniques would be an effective location-based content distribution mechanism. Many multi-distributor DRM schemes [14][15][16][17] are considering the DRM model with multiple distributors for effective content distribution. These schemes discuss the possibilities of implementing diverse strategies using a multidistributor (MD) DRM system, but none presents a concrete mechanism for location-based content distribution.…”

“…The schemes in References 20‐24,26,28, and 29 support authorized connection establishment in DRM but do not address the privacy issue and have adopted single distributor‐based DRM system. DRM schemes 14‐17 support the multi‐distributor model but do not discuss privacy issues. The schemes in References 20‐24,26,28‐31 support authorized connection establishment in DRM, but do not address the security issues of the quantum era.…”

Privacy rights management in multiparty multilevel DRM system

“…For example, contents like regional films or may have popularity and demand in one region and may not have in other regions because the people of one region may not understand the language of another region. While a multi-distributor DRM system accommodate multiple distributors in the system, which can help to implement different strategies in diverse geographical regions [10,21,24,5,6].…”