Protecting chip settings using secured scan chains

Protecting chip settings using secured scan chains

Some embodiments include a method for processing a scan chain in an integrated circuit. The method can include: receiving, in the integrated circuit, the scan chain, wherein the scan chain includes a secret key pattern; separating the secret key pattern from the scan chain; comparing the secret key...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WAKUNDA JUERGEN, HOPPE BODO, GEUKES BENEDIKT, MICHEL MATTEO
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:Some embodiments include a method for processing a scan chain in an integrated circuit. The method can include: receiving, in the integrated circuit, the scan chain, wherein the scan chain includes a secret key pattern; separating the secret key pattern from the scan chain; comparing the secret key pattern to a reference key pattern; determining, based on the comparing the secret key pattern to the reference key pattern, that the secret key pattern does not match the reference key pattern; and generating a signal indicating that the secret key pattern does not match the reference key pattern.