Patent ID: 7600238
Filing Date: 2009-10-06
Classification: H04H,H04N

Abstract:
1. A method for verifying a receiver for a television system with access control, wherein the receiver comprises a chip card, wherein a broadcaster transmits corresponding access rights to subscribers having subscribed to subscriptions, the receiver storing the access rights in the chip card, the method comprising: the broadcaster performing a plurality of calculations, wherein each of the plurality of calculations is defined by a first parameter corresponding to one of the subscriptions and a second parameter constituted by one of a plurality of characteristics of the receiver; the broadcaster then transmitting to the receiver a plurality of results corresponding to the plurality of calculations that is intended for the receiver, the receiver storing the plurality of results in the chip card, wherein in order to verify the receiver: wherein the calculations performed by the broadcaster and the receiver are defined by an encryption algorithm, the first parameter being a subscription key used as an encryption key for the encryption algorithm and the second parameter being a serial number of the receiver.