Unique identifier per chip for digital audio/video data encryption/decryption in personal video recorders
AssigneeZoran Corporation
InventorsNishit Kumar, David Auld
Life of this patent
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Abstract
The invention provides techniques to implement unique identifier for an integrated chip and how this ID can be employed to enhance the security of content in personal video recorder type systems. The storage device can be a hard disk, a removable storage medium or any other type of storage medium. An integrated circuit (IC) within the personal video recorder stores a unique identifier that is used in for encryption and decryption of data stored on the storage device. Several embodiments are disclosed herein that maintain the secrecy of the unique ID such that it is not easily accessible thereby defeating the security scheme.
Claims15
An audio/video system comprising:
- a communications medium;
- and
- a die having control circuit coupled with the communications medium, the control circuit to send and retrieve encrypted audio/video content to and from a storage device, wherein the die of the control circuit includes a plurality of fuses that indicate an ID associated with the audio/video system and further wherein the ID is used by the control circuit to perform cryptographic operations on audio/video content to be stored on and audio/video content retrieved from the storage device.
A audio/video system comprising:
- a communications medium;
- and
- a control circuit coupled with the secure communications medium, the control circuit to send and retrieve encrypted audio/video content to and from the storage device, wherein the control circuit shares an integrated circuit package with a programmable static memory to store an ID associated with the audio/video system and further wherein the ID is used by the control circuit to perform cryptographic operations on audio/video content to be stored on and audio/video content retrieved from the storage device.
A audio/video system comprising:
- a communications medium;
- and
- a control circuit coupled with the secure communications medium, the control circuit to send and retrieve encrypted audio/video content to and from the storage device, wherein the control circuit derives an ID associated with the audio/video system from a number associated with a component in the audio/video system and further wherein the ID is used by the control circuit to perform cryptographic operations on audio/video content to be stored on and audio/video content retrieved from the storage device.
Dependencies are inferred from the claim text.