Method and apparatus for detecting fault injection

An apparatus for detecting fault injection includes a high-fanout network, which spans an Integrated Circuit (IC), and circuitry. In some embodiments, the high-fanout network is continuously inactive during functional operation of the IC, and the circuitry is configured to sense signal levels at mul...

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Bibliographische Detailangaben
Hauptverfasser:	KEREN, NATAN, SHAMIS, LEONID, HERSHMAN, ZIV
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS PULSE TECHNIQUE SEMICONDUCTOR DEVICES TESTING
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Beschreibung
Zusammenfassung:	An apparatus for detecting fault injection includes a high-fanout network, which spans an Integrated Circuit (IC), and circuitry. In some embodiments, the high-fanout network is continuously inactive during functional operation of the IC, and the circuitry is configured to sense signal levels at multiple sampling points in the high-fanout network, and to identify a fault injection attempt by detecting, based on the sensed signal levels, a signal abnormality in the high-fanout network. In some embodiments, the circuitry is configured to sense signal levels at multiple sampling points in the high-fanout network, to distinguish, based on the sensed signal levels, between legitimate signal variations and signal abnormalities in the high-fanout network during functional operation of the IC, and to identify a fault injection attempt by detecting a signal abnormality.