Method for protecting a smart card system

专利名称：Method for protecting a smart card system发明人：Appeldorn, Menzo申请号：EP93203406.9申请日：19931206公开号：EP0601659A1公开日：19940615

专利附图：

摘要：A smart card is connected up to a processing system by means of a terminaland a transmission medium. To activate the smart card, a smart card user has to key in anidentification code which is compared by the smart card with an identification code storedin said smart card. The smart card is activated if there is agreement between the two saididentification codes. After an incorrect identification code has been keyed in a certainnumber of times, the smart card is nevertheless activated to a limited extent. In addition,an error code is supplied by the smart card. After detection of the error code, theterminal sends an alarm code to the processing system. The alarm code preferablycomprises an indication of the location of the terminal.

申请人：Koninklijke PTT Nederland N.V.

地址：P.O. Box 95321 NL-2509 CH The Hague NL

国籍：NL

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