Realnetworks Gmbh

Intel Corporation

Xiaodong Fu

Joshua D Hug

Jeffrey M Ayars

Rahul Agarwal

Alain Hamel

Adam Cappio

Brent Newman

In accordance with one embodiment of the present invention, secure content objects are transcoded from an input format to an output format based upon identified capabilities of a receiving device. In one embodiment, a plurality of trusted processing components are identified to collectively transcode the secure content object from the identified input format to the determined output format. In one embodiment, each of the trusted processing components are authenticated prior to operating on the secure content object.

Auto-negotiation of content formats using a secure component model

In accordance with one embodiment of the present invention, a digital certificate is used to link an arbitrary provisioned right with an associated arbitrary digital action to be performed by a client device on or with respect to a protected digital content object. In one embodiment, the certificate is associated with one or more secure components, which are utilized by the client device in association with performance of the digital action.

Certificate based digital rights management

Auto-negotiation of content output formats using a secure component model

A system and method for producing and using a protected optical media is described. One feature provides for a compact disc containing digital rights management protection to prevent unauthorized copying of copyrighted materials. Another feature provides for secure copying, storage, transfer, and playback of digital audio content from a protected compact disc or computer storage. Yet another feature provides for a versatile optical media that can be used in both traditional audio compact disc players and in computer CD-ROM drives without risking the security of the content on the media or preventing purchasers from having a robust content experience.

System and method for distributing protected audio content on optical media

A decipher key based decipher with at least a portion of the decipher key dissolved into the decipher is disclosed. The decipher includes in-line instructions specifically designed to incrementally contribute to computation of MMod n, where e is a predetermined at least partially unique decipher key. In one embodiment, the decipher includes a first in-line instruction to set an output variable to equal to 1, and a second in-line instruction to set the output variable to equal to the square of the output variable modulus n. In another embodiment, the decipher includes in-line instructions that perform the incremental computation in accordance with an addition chain of e.

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Herndon, VA, United States of America

Xiaodong Fu