Integrated circuit for the confidential storage and processing of data, comprising a device against fraudulent use
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United States of America Patent
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Mar 14, 1989
Grant Date -
N/A
app pub date -
Jun 10, 1987
filing date -
Jun 13, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fraud-preventive device for a memory card comprising an EPROM type or similar non-volatile memory designed to receive confidential authorization data as well as the results, wrong or otherwise, of tests on the authorization data, comprises a single simulation cell designed to record the non-erroneous results, this cell consuming the same current as a memory cell, which has never been programmed, of the memory part designed to record the wrong data.
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