Semiconductor device, method of authentifying and system
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United States of America Patent
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Jun 30, 2009
Grant Date -
Feb 22, 2007
app pub date -
May 17, 2004
filing date -
May 26, 2003
priority date (Note) -
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Abstract
The semiconductor device of the invention includes a circuit and a protecting structure. It is provided with a first and a second security element and with an input and an output. The security elements have a first and a second impedance, respectively, which impedances differ. The device is further provided with a measuring unit a processing unit and a connection unit. The processing unit transform any first information received into a specific program of measurement. Herewith a challenge-response mechanism is implemented in the device.
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