Patent ID: 7636846
Filing Date: 2009-12-22
Classification: H04N

Abstract:
1. A method for managing access to a scrambled event of a service provider, said method comprising: receiving in a device an electronic list of events available from one or more sources, each event having a digital signature and an encrypted message associated therewith; receiving in the device, in response to user selection of one of the events from the list of events, the digital signature and the encrypted message associated with the selected event, the digital signature being encrypted with a first key and the encrypted message being encrypted with a second key different from the first key, the encrypted message comprising a descrambling key and event information including at least one of a channel identity, date and time stamp, event identity and payment amount corresponding to the selected event; authenticating in the device a source of the digital signature and the encrypted message associated with the selected event by decrypting the digital signature in response to receiving the digital signature and the encrypted message; decrypting in the device the encrypted message to obtain the descrambling key upon the authenticating; receiving in the device the selected event from the service provider, the selected event being scrambled using the descrambling key for preventing unauthorized access to the selected event; and descrambling in the device the selected event using the descrambling key.