Combined Conditional Access Development and Support, LLC

General Instrument Corporation

Kenneth P Miller

Lawrence W Tang

Christopher John Bennett

Douglas M Petty

Jack M Birnbaum

Chris Del Sordo

Madhu Penugonda

Stephen A Allinson

Alexander Medvinsky

Systems and methods for data authentication can comprise processing a first secret element to generate a first encrypted secret element, processing a second secret element to generate a non-secret element, and processing the first encrypted secret element and the non-secret element to generate an encrypted data block.

System and method for authenticating data while minimizing bandwidth

Methods, systems, computer-readable media, and apparatuses for providing control word and associated entitlement control message (ECM) functionalities are presented. In some embodiments, a computing device may cache concurrently a first set of control words and a first set of entitlement control messages (ECMs) associated with the first set of control words. The computing device may encrypt a transport stream with a particular control word of the first set of control words. The computing device may insert a particular ECM, of the first set of ECMs, corresponding to the particular control word into the transport stream sent to a device downstream from the computing device. In some embodiments, a computing device may reuse control words and associated ECMs.

Control word and associated entitlement control message caching and reuse

Systems and methods for authenticating data and timeliness are disclosed. A method for authentication can comprise processing a data block to determine a first secret element, generating a second secret element based upon the first secret element, generating a non-secret element based upon the second secret element, and comparing the non-secret element to a nonce associated with the first secret element to determine authentication.

System and method for authenticating data

Disclosed are systems and methods for controlling an amount and rate of security related information (e.g., content encryption or rights management information) being transmitted in a content stream to a user device. In one aspect, the disclosure provides a method and related apparatuses for reducing bandwidth usage required when sending transitional security related information during a transition point of different content in a content stream.

Message rate mixing for bandwidth management

A software interface () is provided to enable television settop middleware () and operating system (OS) software () to control and interact with core settop system software () in a subscriber television terminal to facilitate the provision of desirable digital television services, including authentication and authorization.

Programming interface for configuring a television settop terminal

A software interface () is provided to enable television settop middleware () and operating system (OS) software () to control and interact with core settop system software () in a subscriber television terminal to facilitate the provision of desirable digital television services, including service acquisition (e.g., acquisition of a pay-per-view movie), system information management, settop configuration and control, return path for polling, download capability, and non-volatile memory management.

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Poway, CA, United States of America

Kenneth P Miller