Patent ID: 8028332

Claim:
A verification method of a target device connected to a master device, the master device having means to receive a content transmitted by a broadcast centre via a data stream, the master device and the target device authenticating themselves by means of an exchange of a certificate including at least one certificate identifier, the verification method comprising: requesting to the broadcast centre, by the master device, at least one certificate identifier list for the master device, the request including an identification of the master device; determining an interface of the said master device by the broadcast centre, preparing the certificate identifier list according to the interface; transmitting to the master device updated rights and keys as well as the at least one certificate identifier list pertaining to the master device, in one or more EMM messages; storing the at least one certificate identifier list on the master device; and extracting a verification indication associated with the content transmitted by the broadcast centre, the verification indication including activation or deactivation of a verification of the target device, wherein when the verification indication includes the activation of the verification of the target device, the verification method further includes verifying a certificate of the target device by the master device and using the stored at least one certificate identifier list to authorize or prohibit an exchange of data with said target device.