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Laser based Fault Injection (LFI) and Electromagnetic Fault Injection (EMFI) are powerful techniques commonly for fault injection against security critical circuits. Since LFI/EMFI creates faults by incurring high energy disturbances, they can be detected in advance by sensing the disturbance using a embedded detector. In this paper, a PLL based sensor system for detecting laser fault injection is...
This paper introduces two circuit-level reactive sensor-based countermeasures against malicious implementation attacks exploiting EM-radio leakage from and injection to cryptographic processors. An LC-oscillator-based sensor detects a tiny micro-EM probe approaching proximity to the processor for a passive EM analysis attack. A PLL-based sensor detects intentional high-level EM power injection for...
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