Abstract
This paper presents an insider’s view of the rationale and the cryptographic mechanics of some principal elements of the Open Mobile Alliance (OMA) Secure Content Exchange (SCE) Technical Specifications. A primary goal is to enable implementation of a configurable methodology that quarantines the effects that unknown-compromised entities have on still-compliant entities in the system, while allowing import from upstream protection systems and multi-client reuse of Rights Objects that grant access to plaintext content. This has to be done without breaking compatibility with the underlying legacy OMA DRM v2.0/v2.1 Technical Specifications. It is also required that legacy devices can take at least partial advantage of the new import functionality, and can request the creation of SCE-compatible Rights Objects and utilize Rights Objects created upon request of SCE-conformant devices. This must be done in a way that the roles played by newly defined entities unrecognizable by legacy devices remain hidden.
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Kravitz, D.W. (2010). Open Mobile Alliance Secure Content Exchange: Introducing Key Management Constructs and Protocols for Compromise-Resilient Easing of DRM Restrictions. In: Sion, R., et al. Financial Cryptography and Data Security. FC 2010. Lecture Notes in Computer Science, vol 6054. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-14992-4_15
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DOI: https://doi.org/10.1007/978-3-642-14992-4_15
Publisher Name: Springer, Berlin, Heidelberg
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