The Digital Rights Management (DRM) systems aim at protecting and enforcing the legal rights associated with the use of digital content distributed on the Internet. Most of such systems use watermarking techniques to implement the content protection. Although the effectiveness of the implemented protection strictly depends on the adopted watermarking techniques, an important role is also played by watermarking protocols. They define the scheme of the interactions that have to take place among the entities involved in the processes of content protection and web-based distribution governed by the DRM systems. This paper presents a DRM system developed as a web software platform to implement the copyright protection of multimedia digital content distributed on the Internet. The DRM system is based on a watermarking protocol previously developed by the authors, and has been designed as a service oriented architecture composed of a federation of coordinated web entities that play distinct roles and interact within a trusted environment.
While the advances in networking technologies actually enable mobility and ubiquity of access to computing resources located at different administrative domains, the progress in multimedia technologies has created large amounts of digital content that can be purchased and distributed on the Internet. Within this setting, the problem of the copyright protection of digital content has become a well-known research topic. This paper presents the architecture of a web software platform able to implement the copyright protection of digital content based on digital watermarking technology. The platform is structured as a service-oriented architecture composed of a federation of coordinated web entities and service providers which play distinct roles and interact within a trusted environment. Furthermore, the proposed architecture enables service providers to use a specific middleware to exploit the computing resources they need to provide their protection services. In fact, the middleware can aggregate computing resources directly available on the Internet as well as those belonging to multidomain, non-routable networks, thus enabling service providers to build internal computing environments arranged as cluster grids.
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