Verifying Firmware Authenticity at Boot With SHA-256 Signatures on SAMD Microcontrollers
The bootloader checks a cryptic 64-byte signature in under 5ms—discover how SHA-256 and ECDSA-P256 team up to lock out evil maid attacks.
Creating Custom Bootloaders for Non-Standard Arduino-Compatible Boards Using Optiboot
Creating custom bootloaders for non-standard Arduino-compatible boards unlocks wireless programming secrets—discover how Optiboot transforms your HC-05 into a reliable OTA gateway.
Flashing Bootloader Onto Atmega328p Chip Manually Using Another Arduino
Programming an Atmega328P manually? See how to burn a bootloader using just an Arduino—what could go wrong if you skip one step? This method works flawlessly when done right.
