| 摘要 |
An authentication system includes a communications terminal, an authentication apparatus providing a function to the communications terminal using an access token, a first request part requesting the authentication apparatus to transmit client information for issuing the access token, a first transmitter generating the client information to be transmitted to the communications terminal in response to the request from the first request part, a second request part transmitting the client information to the authentication apparatus and requesting the authentication apparatus to provide the access token, a determination part determining whether the received client information is the client information transmitted from the first transmitter in response to the request from the second request part, a generator generating the access token when determining that the received client information is the client information transmitted from the first transmitter, and a second transmitter transmitting the generated access token to the communications terminal. |
