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What is Rights Expression Languages (RELs)

Chapter 1
Handbook of Research on Secure Multimedia Distribution
Formal, machine-readable languages used for expressing copyright agreements in DRM systems.
Published in Chapter:
Rights Expression Languages
Pramod A. Jamkhedkar (University of New Mexico, USA) and Gregory L. Heileman (University of New Mexico, USA)
Copyright: © 2009 |Pages: 21
DOI: 10.4018/978-1-60566-262-6.ch001
Abstract
Rights expression languages (RELs) form a central component of digital rights management (DRM) systems. The process of development of RELs transforms the rights requirements to a formal language ready to be used in DRM systems. Decisions regarding the design of the conceptual model, syntax, semantics, and other such properties of the language, affect not only each other, but also the integration of the language in DRM systems, and the design of DRM system as a whole. This chapter provides a detailed analysis of each step of this process and the tradeoffs involved that not only affect the properties of the REL, but also the DRM system using that REL.
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