Sometimes, the windows exe file are not recognized as valid programs by internal IT tools.
The TFM uses windows exe file to build the image signature.
A way to solve this you need to use python:
Install python 3.7
Create a requirements.txt file containing:
cryptography
pyasn1
pyyaml
jinja2
The launch in a command line:
pip3 install -r requirements
This will install the necessary modules. You need an external access to be able to do this.
One this is done, you need to edit
c:\STM32SecuWS\TFM\STM32Cube_FW_L5_V1.2.0\Projects\NUCLEO-L552ZE-Q\Applications\TFM_for_WS\TFM_Appli\STM32CubeIDE\postbuild.sh
and from line 23 to 33 you should have:
#line for window executeable
#echo Postbuild with windows executable
#imgtool=$basedir"/scripts/dist/imgtool/imgtool.exe"
#assemble=$basedir"/scripts/dist/assemble/assemble.exe"
#cmd=""
#line for python
echo Postbuild with python script
imgtool=$basedir"/scripts/imgtool.py"
assemble=$basedir"/scripts/assemble.py"
cmd="python"
Be careful, a tipo in original file on imgtool.py that was named impgtool.py
The posbuild.sh is launch at the end of secure and non secure image build to generate the signature.
Best regards
Jocelyn
