Microsoft Technology Licensing, LLC

Michael Selhorn

Jason Matthew Cahill

Scott C Cottrille

Peter David Waxman

Lauren Nicole Antonoff

Kevin Lane Brown

Pavel Kouznetsov

Marco M DeMello

A method is disclosed for rendering content encrypted according to a cryptographic key, where the content has corresponding rights data including a decryption key (KD) for decrypting the encrypted content, and where (KD) in the rights data is encrypted according to a public key of a rights management (RM) server (PU-RM) to result in (PU-RM(KD)). The RM server normally delivers (KD) within a license, but upon being decommissioned can no longer issue such license. In the method, a notification is received that the RM server has been decommissioned, and thereafter an attempt is made to render a piece of content. Such content is determined to be protected to the decommissioned RM server, and a request is sent to the decommissioned RM server for the content key (KD) for the content rather than any license. Thereafter (KD) is received from the decommissioned RM server.

Systems, structures, and methods for decrypting encrypted digital content when a rights management server has been decommissioned

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Seattle, WA, United States of America

Michael Selhorn