发明名称 |
Intergrated circuit for embeddding in smart cards, and method of issuing smart cards |
摘要 |
<p>An integrated circuit embedded in a smart card has a rewritable non-volatile memory in which an instruction file is stored. A control logic circuit in the integrated circuit converts random data into authentication data by executing instructions read from the instruction file, preferably by controlling a simplified data processing circuit having a shift register, an exclusive-OR logic circuit, and specialized bit operation circuits. A card issuer issuing smart cards including this integrated circuit writes different instruction files in different smart cards, thereby enhancing the security of the smart cards. <IMAGE></p> |
申请公布号 |
EP0926624(A2) |
申请公布日期 |
1999.06.30 |
申请号 |
EP19980118154 |
申请日期 |
1998.09.24 |
申请人 |
OKI ELECTRIC INDUSTRY CO., LTD. |
发明人 |
SHONA, YOSHIHIRO |
分类号 |
G06K19/10;G06F12/16;G06K17/00;G06K19/07;G07F7/10;G09C1/00;(IPC1-7):G06K19/073 |
主分类号 |
G06K19/10 |
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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