Mechanism for protecting the transfer of digital content
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 25, 2010
Grant Date -
May 6, 2004
app pub date -
Mar 12, 2003
filing date -
Nov 5, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
According to one embodiment, a method for delivering a mating key to a smart card coupled to a decoding device with a built-in descrambler. The mating key is used by the smart card to encrypt the derived descrambling key for the specific decoder with descrambler. The corresponding mating key is a derivation calculated within the descrambler circuit using a unique value stored in the decoding device, and is of a message that comprises a unique predetermined value that identifies a manufacturer of the decoding device, the digital device targeted to receive the encrypted key data, and the service provider.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully