Patent ID: 7827594

Claim:
A method for distribution of scrambled data and/or services to at least one master terminal and to at least one slave terminal linked with the master terminal, the method comprising: transmitting by a central management module to the master terminal a first secret code S m and transmitting by the central management module to each slave terminal a second secret code S s ; storing the first secret code S m in the master terminal and the second secret code S s in each slave terminal; for each use of a slave terminal by a user, checking whether the first secret code S m has previously been stored in the slave terminal, when the first secret code S m has previously been stored in the slave terminal, checking whether the first secret code S m is in a biunique relationship with the second secret code S s , when the first secret code S m has not previously been stored in the slave terminal, inviting said user to enter the first secret code S m in said slave terminal, and checking whether the first secret code S m entered by the user in the slave terminal is in a biunique relationship with the second secret code S s , authorizing the reception of the scrambled data and/or services by the slave terminal, when the first secret code S m is in a biunique relationship with the second secret code S s , and prohibiting the reception of the scrambled data and/or services by the slave terminal, when the first secret code S m is not in a biunique relationship with the second secret code S s ; defining a first type of entitlement management messages to transmit the first secret code to the master terminal, and defining a second type of entitlement management messages to transmit the second secret code to each slave terminal; and transmitting the first secret code to the master terminal within said first type of entitlement management messages (EMMm) and transmitting the second secret code to each slave terminal within said second type of entitlement management messages (EMMs).