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Introduces a new RAK4631 build variant (-DMESHTASTIC_LOCKDOWN=1) with encrypted flash storage, BLE/USB config access control, and hardened defaults. New files: - variants/nrf52840/rak4631_lockdown/ — PlatformIO env, variant header - src/security/EncryptedStorage.h/.cpp — AES-128-CTR + HMAC-SHA256 encrypted proto storage using CC310 hardware, passphrase-gated DEK, TTL/boot-count unlock token, backoff on failed attempts - src/security/APProtect.h/.cpp — UICR APPROTECT (SWD lockout) Modified files: - configuration.h — MESHTASTIC_LOCKDOWN flag derives PHONEAPI_ACCESS_CONTROL, ENCRYPTED_STORAGE, ENABLE_APPROTECT, HARDENED_DEFAULTS (nRF52 only) - NodeDB.cpp/.h — encrypted loadProto/saveProto, locked-boot early return, migration of plaintext files to MENC, hardened defaults, saveToDiskNoRetry guard prevents FSCom.format() when storage locked - PhoneAPI.cpp/.h — per-connection auth reset, redacts channel PSKs and security keys for unauthorized clients, revokeAllAuth() for Lock Now, post-config TAK_LOCKED/TAK_NEEDS_PROVISION notification - AdminModule.cpp — passphrase delivery via set_config(security), provision/unlock/re-verify flow, Lock Now sentinel (0xFF), PKC admin auth callback to PhoneAPI - PowerFSM.cpp — guard serialEnter() BLE disable on nRF52
Meshtastic Firmware
Overview
This repository contains the official device firmware for Meshtastic, an open-source LoRa mesh networking project designed for long-range, low-power communication without relying on internet or cellular infrastructure. The firmware supports various hardware platforms, including ESP32, nRF52, RP2040/RP2350, and Linux-based devices.
Meshtastic enables text messaging, location sharing, and telemetry over a decentralized mesh network, making it ideal for outdoor adventures, emergency preparedness, and remote operations.
Get Started
- 🔧 Building Instructions – Learn how to compile the firmware from source.
- ⚡ Flashing Instructions – Install or update the firmware on your device.
Join our community and help improve Meshtastic! 🚀
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