Core engineering and protocols for Anti-Tamper & Sub-Nanosecond Zeroization.
FIPS 140-3 Level 4 requires complete physical protection against advanced laboratory penetration. MilitaryTPM covers the silicon die with a multi-layer serpentine conductor mesh driven by pseudo-random high-frequency signals. Any attempt to cut, short, or probe the mesh alters line capacitance, instantly triggering defensive countermeasures.
When a tamper event is confirmed, an analog crowbar circuit connects the key storage SRAM directly to ground while discharging an on-chip capacitive energy reserve through the poly-silicon fuse bank. The cryptographic keys (ML-KEM-1024 private vectors and root seeds) are completely obliterated in under 85 nanoseconds, rendering forensic extraction physically impossible.