Military Embedded Systems

Anti-Tamper Benefits of Encrypted Helper-Data Images for PUFs


November 29, 2021

Anti-Tamper Benefits of Encrypted Helper-Data Images for PUFsPUFs are mixed-signal circuits which rely on variations unique to a specific chip to self-generate a digital “fingerprint.” Most PUFs require a “helper-data” image that is generated during the initial digitization process, also known as Enrollment. Leveraging the chip-unique transformation function of PUFs and encrypted helper data, an unclonable challenge-response mechanism can be implemented that can distinguish authentic chips from perfect adversarial clones.

Download this white paper to learn:
The nature and capabilities of PUFs
Threats posed by cloned chips
Threat mitigation using PUF helper data

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