Method for the settlement of credit by an IC card

专利名称：Method for the settlement of credit by an

IC card

发明人：Ishiguro, Ginya,Muta, Toshiyasu,Sakita,

Kazutaka,Miyaguchi, Shoji,Okamoto,Tatsuaki,Fujioka, Atsushi

申请号：EP98104504.0申请日：19930916公开号：EP0856822B1公开日：20030305

摘要：An IC card (6) has a card information memory area wherein there are written acard identification number IDU, a predetermined setting number Ns, a first master digitalsignature SA4 for said setting number Ns and a second master digital signature SA5 forinformation including said card identification number IDU and said first master digitalsignature SA4. An IC card terminal (2a, 2b) has terminal information memory area whereinthere are written a master public key nA for verification of a master digital signature,terminal secret keys pT and qT for the creation of a terminal digital signature and aterminal public key nT for verification of said terminal digital signature. When insertedinto the IC card terminal, said IC card transmits said card identification number IDU andsaid first and second master digital signatures to said IC card terminal; said IC cardterminal verifies said second master digital signature SA5 and, if valid, instructs theentering of a password and transmits a password Nc' to said IC card when it is entered;said IC card matches said password Nc' with a password Nc stored in said card

information memory means and, if they match, transmits an authentication signal to said

IC card terminal; and upon receiving said authentication signal said IC card terminalbecomes enabled for providing a service and, after completion of said service, recordsinformation including an amount value V for said service and said received cardidentification number IDU, as usage/management information in usage/managementmemory means.

申请人：NIPPON TELEGRAPH & TELEPHONE

地址：JP

国籍：JP

代理机构：Hoffmann, Eckart, Dipl.-Ing.

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