Method for operating a portable data carrier, and such a portable data carrier

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United States of America Patent

PATENT NO 9912471
SERIAL NO

14654280

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Abstract

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A method for operating a portable data carrier includes a processing unit for processing commands and a memory unit for storing data, with random wait states being inserted into the processing of the commands for thwarting SPA/DPA attacks. An actual checksum may be computed over the data of a selected region of the memory unit during a random wait state. A portable data carrier is arranged for executing the method.

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Patent Owner(s)

Patent OwnerAddress
GIESECKE+DEVRIENT MOBILE SECURITY GMBHPRINZREGENTENSTRASSE 159 MUNICH 81677

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Stocker, Thomas Munich, DE 16 82

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