| 摘要 |
The present invention refers to a method for managing a processing of a digital broadcast transport stream (10) received, from a broadcaster (20) through a network (50), by a multimedia unit (30) identified by a personal identifier. This multimedia unit is connectable to a security module (38) associated to the multimedia unit. This multimedia unit is also connectable to a server (40) through an IP-connection (45) provided with a return path (43). The transport stream (10) comprising scrambled content packets (15) and scrambled conditional access messages (12) which are necessary for descrambling the content packets. The method comprising the steps of: -sending the conditional access messages (12), for their processing, from the multimedia unit (30), either to the server (40) through the return path (43) or to the security module (38), depending on a selection command, verifying the authentication of the multimedia unit (30) and/or the validity of access rights allocated to the multimedia unit (30); if the authentication fails or if the allocated rights are not valid, then preventing any further processing of the conditional access message (12), securely obtaining, at the multimedia unit (30),the control data (13) corresponding to the conditional access messages (12), descrambling the audio/video/data content packets (15) by means of the control data (13) at the multimedia unit (30). |
