| 摘要 |
#CMT# #/CMT# The system has a server (2) performing control access to decoding keys in a manner to create a signature, and a subscriber chip card for clients arranged for calculating the obtained signature. The server is arranged to create the signature of an encoding key by using bytes, where the emission flow data is encoded according to digital video broadcasting standard. #CMT#USE : #/CMT# System for identifying a source of piracy that provides decoding the encoding data flow, in an access control field of a reception system such as digital set-top box or dynamic activation and deactivation of reception of a service diffusing audiovisual, multimedia and text data. #CMT#ADVANTAGE : #/CMT# The system allows the identification of the piracy source and determination of the origin of the diffusion of the digital video broadcasting of the encoded content, and identification of the source platform of the sharing card. The system allows the cutting of the incriminated board, and launching the tracking against the subscriber of the board while searching the system fault. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view illustrating an access control of a reception system by a system for identifying a source of piracy. 1 : Data flow 2 : Server 3 : Randomizer 4 : Access control server 5 : Client. |
