Nova Patents
EP1524580A3

Digital rights management system

Abstract

A public licensing infrastructure (PLI) for a digital rights management (DRM) system is described. In an implementation, a method includes generating a formal license for content. The formal license includes a decryption key for decrypting the content and access rules for accessing the content. A plurality of license authorities is configured to provide a plurality of partial licenses. The plurality of partial licenses is combinable to form the formal license. Each license authority provides a respective partial license.

EP1524580A3, drawing sheet 1
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Term

Term ended

Projected expiry passed 12 August 2024, 2.1 years ago.

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