Retrieval and transfer of encrypted hard drive content from DVR set-top box utilizing second DVR set-top box
AssigneeScientific-Atlanta, Inc.
InventorAnthony J. Wasilewski
Life of this patent
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Abstract
A system and method for retrieval and transfer of encrypted content from a first set-top box utilizing a second set-top box. When content is recorded to the storage device of the first set-top box, the content is encrypted with a content instance key. This content instance key is encrypted with the public key of the first set-top box and a duplicate of the content instance key is encrypted by the public key of the second set-top box. The encrypted content on the storage device may be retrieved by decrypting the duplicate content instance key with the private key that corresponds with the public key of the second set-top box that encrypted the duplicate of the content instance key.
Claims23
A method for retrieval and transfer of encrypted content from a first storage device of a first set-top box utilizing a second set-top box, said second set-top box in addition to said first set-top box, said method comprising the following steps:
- said second set-top box coupled to said first storage device detecting encrypted content recorded on said first storage device wherein said encrypted content on said first storage device is encrypted with a content instance key;
- and
- said second set-top box decrypting a duplicate of said content instance key wherein said duplicate content instance key is encrypted with a public key of said second set-top box.
A method for retrieval and transfer of encrypted access rights elements to content from a first set-top box, said method comprising the following steps:
- encrypting access rights elements to content to be stored on a first storage device of the first set-top box with a content instance key, said access rights elements for determining a user's access to said content;
- encrypting said content instance key with a public key of the first set-top box;
- and
- encrypting a duplicate of said content instance key with one or more public keys of other than the first set-top box.
Dependencies are inferred from the claim text.