Форум проекта ProTV.UA

The inventive method comprises the following steps: generation of a temporary encryption key (MCW); encryption of the value, which determines the encryption keys (cw) of the content, by the temporary key (MCW); transmission of said encrypted value to the destination of the multimedia unit; encryption and transmission of at least two cryptograms comprising the temporary key (MCW) encrypted by an authorization key (G), wherein the first cryptogram is encrypted by a first authorization key which is proper to a first security module and the second cryptogram is encrypted by a second authorization key which is proper to a group of security modules from which the first security module is excluded.