| 摘要 |
PURPOSE:To perform an authentication without the necessity of a means preliminarily storing the authentication random number and the authentication arithmetic result corresponding to each mobile station and without retrieving the authentication key of a subscriber from a data base when a subscriber authentication is performed. CONSTITUTION:At the time of the authentication of a mobile station 1, when the mobile station 1 receives an authentication request signal from a base station 2, the station 1 performs an authentication arithmetic execution and returns an authentication response to the base station 2. When a mobile object controller 3 receives an authentication confirmation signal, the controller transmits an authentication arithmetic result request to a data base 4. The data base 4 receiving it the authentication arithmetic execution, defines the obtained authentication arithmetic result as the set parameter of the response of the authentication arithmetic result and transmits the parameter to the mobile object controller 3. The mobile object controller 3 receives the response of the authentication arithemtic result and judges that the mobile station 1 is right when a collation result coincides.
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