| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system capable of dissolving inconvenience that a user needs to prepare an IC card to be used for financial settlement every time of performing the financial settlement related to electronic commerce. <P>SOLUTION: When a signature data transmission request is received from an authentication server 5, a user terminal 3 transmits signature data stored by the user terminal 3 to the authentication server 5, and when a signature data generation request is received from the authentication server 5, stores the signature data generated by an IC card 2 using an authentication seed received from the authentication server 5 and transmits the signature data to the authentication server 5. When an authentication request is received from an electronic commerce server 4, the authentication server 5 confirms validity of the signature data acquired from the user terminal 3, and when there is no validity, transmits the signature data generation request including the authentication seed to the user terminal 3, acquires the signature data again from the user terminal, and then collates the authentication seed obtained by decoding the signature data acquired from the user terminal 3. <P>COPYRIGHT: (C)2013,JPO&INPIT |
