Overview
A tamper-resistant access control and identity verification device built around a hardened NFC controller with integrated secure element.
- ISO 14443A and ISO 15693 protocols with mutual authentication and encrypted key exchange.
- Dedicated hardware secure element isolating cryptographic keys from the main processor.
- Active mesh shield layer inside the PCB stack-up and environmental sensors to detect anomalies.
- Secure key zeroisation circuit automatically triggered on physical tamper events.
- Cryptographically signed firmware updates to prevent injection of malicious code.
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Challenge
Hardening an NFC reader against physical tampering, side-channel analysis, and high-voltage attack vectors.
Solution
Integrated an active mesh tamper detection envelope, a secure element IC, and transient voltage suppressors on all external pins.
Outcome
Achieved Common Criteria EAL5+ compliance status, resisting all physical penetration and glitching attempts.