| 摘要 |
PROBLEM TO BE SOLVED: To perform authentication with high security by preventing a certificate from expiring, when the certification is about to expire. SOLUTION: This security device, having authentication function that uses a certificate, comprises a warning-notifying means for notifying a warning according to the period of validity of the certificate and a setting means for setting the method for notifying a warning. COPYRIGHT: (C)2005,JPO&NCIPI
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