System and method to securely operate a computerprogram.

申请公布号：EP0430734(B1)

申请号：EP19900403114

申请日期：1990.11.05

申请公布日期：1995.09.27

申请人：

SCHLUMBERGER INDUSTRIES

发明人：BEYSSON, DANIEL

分类号：G06F21/12;G07F7/10;(IPC1-7):G06F1/00

主分类号：G06F21/12

摘要：<p>The invention relates to a system and a method for securely operating a computer program. …<??>At the same time as it receives the medium (16) of the program, the user receives a memory card (24) which must remain engaged in the reader (20) associated with the computer machine (10). …<??>Certain intermediate results are stored in the memory of the card, and not in the machine (10). In subsequent execution of the computer program the intermediate results are read from the memory of the card. …<IMAGE>… </p>

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