Nitrokey Pro firmware

Building

make [VID=0x20a0] [PID=0x4108] firmware

Parameters:

• VID: Define Vendor ID
• PID: Define Product ID

Flashing

Versaloon

1. export OPENOCD_BIN=<path-to-openocd-bin-folder> && ./flash_versaloon.sh or edit the script directly to contain OPENOCD_BIN=<path-to-openocd-bin-folder>
2. make flash-vesaloon

(TODO: For now it has a bug. Run it once, then kill it with Ctrl-C, then re-run it and it should flash the image)

A proper OpenOCD (patched for SWD) seems to be this one: https://github.com/snowcap-electronics/OpenOCD-SWD

or this one which is configured for automake 1.14: https://github.com/ggkitsas/OpenOCD-SWD

STM

1. When using the MCU's bootloader use STM Boot Loader Demonstrator or stm32flash under Linux.
2. Read-protect the flash

sudo stm32flash -w crypto.hex -v /dev/ttyUSB0