AN5056 Rev 8 35/49
AN5056 Adapting SBSFU
48
Updating the tools running on the host side to prepare the keys and the
firmware image:
5. Step 5: update the preparation tools to support the new cryptographic scheme:
prepareimage.py, translate_key.py, and keys.py.
6. Step 6: update the IDE integration to generate the appropriate keys and firmware
image.
– A new batch file is required to call the preparation tools with the appropriate
commands; prebuild.bat copies this batch file to create postbuild.bat.
– prebuild.bat must be updated to take into account the new cryptographic scheme
and generate the proper keys and postbuild.bat.