Method and arrangement for protecting digital parts of circuits

The invention relates to a method and an arrangement for protecting digital parts of circuits, which method and arrangement may be used in particular to protect memory units in such digital circuits, and particularly in smart-card controllers, that contain secret data, against attacks in which the a...

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Bibliographic Details
Main Authors Malzahn, Ralf, Feuser, Markus
Format Patent
LanguageEnglish
Published 17.07.2003
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Summary:The invention relates to a method and an arrangement for protecting digital parts of circuits, which method and arrangement may be used in particular to protect memory units in such digital circuits, and particularly in smart-card controllers, that contain secret data, against attacks in which the approach adopted is to change digital parts of circuits, and particularly the digital part of a smart-card controller, to an undefined state by brief voltage drops, e.g. by light-flash attacks.