Overview
A secure element based cryptographic signing device with E-ink display and physical confirmation interface for cold storage in high-value digital asset management.
- Dedicated Common Criteria EAL5+ certified hardware secure element.
- Dual-MCU air-gapped architecture preventing direct host access to keys.
- Physical layout protection using blind/buried vias and holographic joint seals.
- Reflective E-ink display requiring physical button confirmation to sign.
- Encrypted USB HID interface wrapper preventing filesystem exposure.
Looking for custom engineering? Explore our electronics engineering services or contact us to request a PCB design and prototyping quote.
Challenge
Designing a crypto wallet with an E-ink display that has a completely isolated air-gapped security domain and physical layout protection.
Solution
Implemented a dual-MCU architecture separating the user interface from the security core, using secure element and blind/buried PCB vias.
Outcome
Passed external penetration testing with zero vulnerabilities identified, resisting all physical side-channel attacks.