Core engineering and protocols for Fault Injection Countermeasures.
Adversaries with physical access use pulsed infrared lasers, electrical spark generators, or precision voltage droop injectors to induce bit flips during cryptographic calculations. In ML-KEM decapsulation, inducing a single bit-flip during the Fujisaki-Okamoto re-encryption check can bypass implicit rejection, exposing the secret key.
EmbeddedShield embeds a distributed grid of photodiodes, ring-oscillator frequency monitors, and analog voltage comparators across the silicon layout. If a laser pulse strikes a register or power supply lines dip abruptly, the hardware instantly aborts the cryptographic pipeline, scrubs internal registers, and enters a locked state.