AFIA: ATPG-Guided Fault Injection Attack on Secure Logic Locking

The outsourcing of the design and manufacturing integrated circuits has raised severe concerns about piracy Intellectual Properties illegal overproduction. Logic locking emerged as an obfuscation technique to protect outsourced chip designs, where circuit netlist is locked can only be functional once a secure key programmed. However, Boolean Satisfiability-based attacks have shown break logic locking, simultaneously motivating researchers develop more countermeasures. In this paper, we present novel fault injection-based attack any that relies on stored secret key, denote AFIA, ATPG-guided Fault Injection Attack. proposed based sensitizing bit primary output while injecting faults at few other lines block propagation targeted bit. AFIA very effective in determining there exists stuck-at pattern detects 1 (or 0) line. average complexity number injected for linear with size \(\mathcal {K}\) requires test patterns determine K. fewer sensitize output, compared \(2\mathcal {K}-1\) differential analysis illustrated our previous work.