发明名称 |
Certificate confirmation method, certificate confirmation program and certificate that can readily and more positively confirm authenticity of certificate |
摘要 |
A method of confirming a certificate by using a management computer that issues the certificate is disclosed. The management computer is coupled to an application terminal for applying for issuance of the certificate and to a confirmation terminal for reading a display code printed on the certificate. The management computer performs the steps of: specifying contents to be certified based on an application item received from the application terminal; issuing the certificate by calculating a compressed value by substituting data related to the contents to be certified into a one-way function, and by generating print data for printing a display code including the compressed value and the contents to be certified; recording an issuance history of the certificate; and when data of a compressed value are received from the confirmation terminal that reads the display code on the certificate, notifying the confirmation terminal of authenticity of the certificate based on a result of comparison between the received compressed value and the compressed value calculated in the step of issuing the certificate.
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申请公布号 |
US7581102(B2) |
申请公布日期 |
2009.08.25 |
申请号 |
US20050034214 |
申请日期 |
2005.01.13 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
YASUDA HIROSHI |
分类号 |
G06Q10/00;H04L9/32;G06F21/00;G06F21/24;G06K7/00;G06Q50/00;G06Q50/10;G06Q50/26;G07B15/00;H04L9/00;H04L29/06 |
主分类号 |
G06Q10/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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