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| CDMA frequency planning for fixed wireless application |
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| Programmable telecommunications security module for key encryption adaptable for tokenless use |
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| Graphical user interface for a portable telephone |
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Subscriber registration and authentication method
| Details |
Inventors: Miki, Noriki; Kumozaki, Kiyomi;
Assignee: Nippon Telegraph and Telephone Corporation (Tokyo, JP)
Primary Examiner: Tarcza; Thomas H.
Assistant Examiner: White; Carmen D.
Attorney, Agent or Firm: Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
The present invention provides a subscriber registration and authentication method which secures high safety and by which necessary circuit scale is small. In the method of the present invention, each network termination unit has a peculiar secret information item for identifying it and an encrypted information item obtained from the secret information item with a public key determined by the network manager; the operation system decrypts the encrypted information item stored in the network termination unit which will be registered with a secret key determined by the network manager, and registers this termination unit for the local service unit by writing the encrypted and decrypted information items into the service unit; at the beginning of providing the service, the local service unit calls the network termination unit as a communication partner by sending the encrypted information item which is peculiar for the termination unit; the called network termination unit compares the received encrypted information item with that of its own, and if these agree with each other, responds to the local service unit by using the secret information item of its own; and the local service unit confirms that the network termination unit has been regularly registered by collating the received information item with the information item of its own. |
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DETAILED DESCRIPTION In consideration of the above problems, the purpose of the present invention is to provide a subscriber registration and authentication method whereby no large-scale data base is necessary and the circuit scale of each unit can be small.
Therefore, the present invention provides a subscriber registration and authentication method, used in a communication service system in which plural network termination units are connected via a communication network with a local service unit controlled by an operation system which is managed by a network manager and the local service unit provides services for each registered network termination unit, said method for registering each network termination unit for the local service unit and authenticating the registered network termination unit before providing the service, wherein: each network termination unit has a peculiar secret information item for identifying the network termination unit and an encrypted information item obtained by encrypting the secret information item with a public key which is determined by the network manager, and said method comprises: step (r), performed by the operation system, of decrypting the encrypted information item stored in the network termination unit which will be registered by using a secret key which is determined by the network manager, and registering this network termination unit for the local service unit by writing the encrypted and decrypted information items into the local service unit; step (c1), performed by the local service unit at the beginning of providing the service, of calling the network termination unit as a communication partner by sending the encrypted information item which is peculiar for the network termination unit; step (c2), performed by the called network termination unit, of comparing the received encrypted information item with the encrypted information item of its own, and if these agree with each other, responding to the local service unit by using the secret information item of its own; and step (c3), performed by the local service unit, of confirming that the network termination unit as a communication partner has been regularly registered by collating the information item received from the network termination unit with the information item of its own
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