Ben MeadorsandThomas Göttgens
fa031c95dc
* perf(crypto): stop heap-allocating a cipher object per packet encryptAESCtr() constructed a fresh CTR<AES128/256> on the heap for every call - once per encrypted transmit and once per channel decrypt attempt on every received encrypted packet. On the platforms that use this base implementation (STM32WL, RP2040, nRF54L15, portduino) that is avoidable per-packet malloc/free churn on small heaps. Reuse lazily-created singletons instead. Safe for the same reason the function's static scratch buffer already is: every caller serializes under cryptLock, and setKey/setIV reinitialize the cipher state each call. Lazy heap pointers rather than static objects so ESP32/nRF52 (which override this method) never reserve the RAM. * Improve comments in encryptAESCtr function Refactor comments for clarity and conciseness in AES-CTR encryption implementation. --------- Co-authored-by: Thomas Göttgens <tgoettgens@gmail.com>
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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