FIELD: information encryption.
SUBSTANCE: system contains an encrypted data broadcasting centre, at least one control centre, a terminal device, a decoder located between the encrypted data broadcasting centre and the terminal device, the decoder includes an encrypted data reception and decryption module and a data access authority control module; the data access authority control module contains a protection module.
EFFECT: provision of system allowing to simplify access authority control at broadcasting centre level and ensuring optimal data security.
12 cl, 2 dwg
