Hardware Root of Trust and Cryptographic Firmware Attestation for Flight Computers

Core aerospace engineering and protocols for Secure Boot & Firmware Attestation.

The Threat of Unauthorized Avionics Firmware Modification

During overnight maintenance or hangar storage, unauthorized personnel could attempt to flash modified, unverified firmware into flight control microcontrollers, introducing backdoors or disabling safety envelope limiters.

Cryptographic Hardware Root of Trust

EvtolSecurity embeds dedicated Hardware Security Modules (HSMs) directly onto avionics motherboards. During power-on boot, the hardware-verified bootloader checks the cryptographic digital signature of the firmware binary: if a single bit is modified, the processor refuses to boot, preventing execution of compromised code.

Hardware Security Module (HSM): Protecting cryptographic private keys in tamper-resistant silicon.
ECDSA Signature Verification: Validating binary hashes before releasing CPU reset pins.
Rollback Protection: Hardware non-volatile counters preventing downgrades to vulnerable firmware.
Tamper Detection: Erasing sensitive cryptographic keys if physical enclosure breach is detected.

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