It is important for manufacturers of silicon chips to guard against counterfeit chips, hardware trojans, exploits, royalty-avoiding mechanisms, and other malicious hardware injected into a production stream. The techniques of this disclosure create individualized chip signatures during the manufacturing process. The signatures can be used to detect counterfeit silicon or otherwise suspicious on-board componentry.
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Osorio Lozano, Miguel and Keys, Sean, "Detection of counterfeit silicon", Technical Disclosure Commons, (January 18, 2019)