Embedded
Security
Trusted Execution Environment design on ARM TrustZone-M, secure boot chains, DMA isolation, hardware crypto accelerator integration. Production firmware that survives audit.
TrustZone-M done right
certified Trusted Execution Environment with Non-Secure Callable gateway, NSC API input validation, secure partition isolation. Every byte that crosses the security boundary is validated.
- certified Trusted Execution Environment child image integration
- NSC API hardening
- Secure partition memory protection
Bound peripherals
DMA configured at boot time from the Secure World and locked. No software, not even with root on a Non-Secure RTOS, can re-target the DMA to leak microphone data.
- Boot-time DMA descriptor lock
- Mic/speaker bound to SPE
- DMA Air-Gap pattern (patent pending)
Secure boot + OTA
MCUboot with Ed25519 signature verification, rollback protection via security counter, OTA delta updates over BLE-SMP. Production-grade firmware lifecycle.
- Ed25519 signature in hardware crypto accelerator
- Security counter rollback prevention
- Delta OTA over BLE-SMP
Architecture
Hardware Anchor of Trust
Hardware anchor of trust
The earbud is the fortress. The phone is the glass.
Q-Audion Earbud
Secure Element + PQC engine
MEMS mic
hardware-bound
Secure Element
tamper-resistant
Per-call keys
ephemeral
Anti-tamper
boot-locked
Host phone
vehicle, not vault
Compromised OS does not affect security. It only sees ciphertext.
↕ BLE · ciphertext only ↕
Trust anchor lives in the earbud
Not the phone. Not the cloud.
Your phone can be malware-ridden
The earbud doesn't care.
Hardware-bound keys
Never extractable. Never on the phone.