| 摘要 |
PURPOSE: An authentication methods by uploading a file is provided to allow a user to input authentication information by uploading a file which a user easily recognizes through a registered explanation notice. CONSTITUTION: A user connects a client terminal to a certificate server. The certificate server requests authentication information from the client terminal(S21,S23). The client terminal inputs the certificate information to the certificate server(S31,S33). The certificate server compares transmitted certificate information with the information stored in a certificate database to process certification(S41,S43).
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