发明名称 |
METHOD FOR SECURING THE MEMORY CONTENT OF IC CARDS |
摘要 |
Information is stored permanently in the cells of a data memory chip contained on a card. A number of selected memory cells are used to protect the memory against illegal manipulation particularly by using a light source. The selected cells are filled with a specific content and any change is used to block the remaining cells. |
申请公布号 |
AU2003240247(A1) |
申请公布日期 |
2003.12.02 |
申请号 |
AU20030240247 |
申请日期 |
2003.05.14 |
申请人 |
GIESECKE AND DEVRIENT GMBH |
发明人 |
MICHAEL BALDISCHWEILER;DIETER WEISS |
分类号 |
G06F21/00 |
主分类号 |
G06F21/00 |
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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