The unit key management of entanglement, information transmissu00e7o unit key management of shuffling, method for management of exit from the key of entanglement, entanglement key management program, management unit. Transmissu00e7o licence, unit information management of license.Method for managing out of information of license, and management program, license information

摘要

The unit key management of entanglement, information transmissu00e7o unit key management of shuffling, method for management of exit from the program embaralhament0 key, key management of shuffling, management unit. Transmissu00e7o licence, unit information management of license.Method for managing out of information of license, and management program, license information. The present invention relates to a device for key management of entanglement of low cost which serves to allow the management of a key of embaralhament The based on individual information of contract and guaranteeing safety in the broadcasting of a narrow band.The device key management of shuffling 7 includes a decoding unit which serves to decode an ECM 75 ECM in which a key of shuffling and the individual contract information are encrypted. The individual information of the contract shall include information of contract that indicate the situations of contract of a plurality of content receivers 3, 3,...It is prepared based on the ID of receivers that serves to identify each of the receivers of the content 3.The key management device 7 includes a scrambler unit for obtaining the information of the contract 76b used to obtain the information of contract of the receiver 3 associated with the content it receiver from the information of individual contract and a unit of D. Eterminau00e7u00e3o situation of contract 76C which serves to determine the situation of contract and produce the key DAnd shuffling the decoding content 5 if the situation of the contract is under a contract.