摘要:
The invention relates to a method and a system for conditional access making it possible to prevent the fraudulent use of a subscriber electronic device (1a, 1b, 1m) and to thus effectively combat the fraudulent making available of protected contents. The invention further relates to the adaptation of such a device as well as to a method allowing the revocation of the latter if it is deemed to be illicitly exploited or its possible reinstatement.
摘要:
The invention relates to a method for preventing the fraudulent use of an electronic device and for thereby effectively controlling the fraudulent dissemination of protected content. The invention also relates to the modification of such a device and to a method enabling the permanent invalidation of said device, if considered to be illicitly used, or the optional reinstating of said device.
摘要:
The invention relates to a secure method for transmitting a control word between a server (3) and a plurality of processing entities (Ea, Eb, Em) so as to respectively produce and utilize said control word. Preferably such a method is applied to the field of conditional access methods and systems for preventing the fraudulent use of compromised decryption keys resulting from a coalition of pirate hackers.