UNIQUE IDENTIFIER PER CHIP FOR DIGITAL AUDIO/VIDEO DATA ENCRYPTION/DECRYPTION IN PERSONAL VIDEO RECORDERS
First Claim
1. An apparatus for processing audio/video content, comprising:
- a control circuit that is arranged to derive an ID associated with an audio/video system from a combination of at least one system value of one or more hardware components of the audio/video system and at least one system value of one or more software components of the audio/video system; and
a memory for storing the ID, wherein the ID is directly used by the control circuit as a key to perform encryption and decryption cryptographic operations on the audio/video content to be sent from and retrieved by the audio/video system.
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Accused Products
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.
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Citations
20 Claims
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1. An apparatus for processing audio/video content, comprising:
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a control circuit that is arranged to derive an ID associated with an audio/video system from a combination of at least one system value of one or more hardware components of the audio/video system and at least one system value of one or more software components of the audio/video system; and a memory for storing the ID, wherein the ID is directly used by the control circuit as a key to perform encryption and decryption cryptographic operations on the audio/video content to be sent from and retrieved by the audio/video system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for processing audio/video content, comprising:
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a memory for storing an ID associated with an audio/video system; and a control circuit that is coupled with the memory on a single integrated circuit package, the control circuit is arranged to derive the ID from a combination of at least one system value of one or more hardware components of the audio/video system and at least one system value of one or more software components of the audio/video system, wherein the ID is directly used by the control circuit as a key to perform encryption and decryption cryptographic operations on the audio/video content to be sent from and retrieved by the audio/video system. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A processor readable non-transitory storage media that includes a plurality of executable instructions, wherein the execution of the instructions enables operations for processing audio/video content, the operations comprising:
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storing in a memory an ID associated with an audio/video system; employing a control circuit to derive the ID based on a combination of at least one system value of one or more hardware components of the audio/video system and at least one system value of one or more software components of the audio/video system; and employing the control circuit to directly use the derived ID as a key to perform encryption and decryption cryptographic operations on the audio/video content to be sent from and retrieved by the audio/video system. - View Dependent Claims (18, 19, 20)
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Specification