Digital fault injection detector

A secure Integrated Circuit (IC) includes functional circuitry, and protection circuitry configured to protect the functional circuitry against fault-injection attacks. The protection circuitry includes a plurality of digital detection cells, and protection logic. The detection cells have respective...

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Bibliographic Details
Main Authors Golan, Tamir, Kirschner, Yuval, Hershman, Ziv
Format Patent
LanguageEnglish
Published 21.06.2022
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A secure Integrated Circuit (IC) includes functional circuitry, and protection circuitry configured to protect the functional circuitry against fault-injection attacks. The protection circuitry includes a plurality of digital detection cells, and protection logic. The detection cells have respective inputs and outputs and are connected output-to-input in at least a chain. In response to a fault-injection attack, a given detection cell in the chain is configured to toggle an output that drives an input of a subsequent detection cell in the chain, thereby causing a pulse to propagate along the chain. The protection logic is configured to receive the pulse from the chain and initiate a responsive action.
Bibliography:Application Number: US202016792913