Implementation of a secure boot mechanism for STM32F407VET6 that verifies firmware integrity using SHA-256 hashes.

• Minimal bootloader with application jump
• SHA-256 firmware verification
• Tamper detection
• UART/LED status indicators

• Hardware:
  • STM32F407VET6 board
  • ST-Link V2 programmer
• Software:
  • STM32CubeIDE or arm-none-eabi-gcc toolchain
  • OpenSSL (for hash generation)
  • Python (optional for scripts)

1. Generate firmware hash:

openssl dgst -sha256 -binary firmware.bin | dd of=firmware_with_hash.bin bs=1 seek=$(stat -c%s firmware.bin) conv=notrunc