| 摘要 |
This invention is to safely and surely distribute authentication information to users or user terminals. This method includes: requesting authentication using predetermined authentication information for an access destination via a network; receiving a notification indicating an authentication failure from the access destination; acquiring currently valid authentication information from an authentication information manager by transmitting data to indicate own legitimacy, and storing the acquired currently valid authentication information into a storage device; and requesting the authentication using the acquired currently valid authentication information for the access destination via the network. Thus, by supposing that a failure in the authentication occurs, and by causing the user side to present the data to indicate own legitimacy for the authentication information manager, the currently valid authentication information is distributed, for example, after the encryption.
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