Curve25519-powered Zephyr supervisor for STM32L0: derives AES keys per boot, encrypts reset/watchdog state, enforces dual-heartbeat SLAs, and orchestrates safe-mode recovery after power dips. Ships with native_sim + hardware tests, release logs, security backlog, and GitHub Actions CI so 8 KB Cortex‑M0 nodes can reboot with audit-ready telemetry.
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Updated
Dec 1, 2025 - C