| 摘要 |
In the digital signature system, a server 1 is provided with a tamper resistant HSM 13 having stored therein a digital certificate 11, which is equivalent to an official seal, issued to an organization, a digital signature unit 17 for applying digital signature processing to digital data using the digital certificate 11, a person in charge database memory unit 22 having stored therein a database of a person in charge authorized to request digital signature, and a digital signature request reception unit 16 for receiving a request for digital signature sent from a terminal for person in charge together with the digital data 14 to be an object of digital signature and at the same time, judging whether or not the received request for digital signature is a request sent by a person in charge stored in the person in charge database memory unit 22.
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