In order to fully automate the code signing process, we would like to pass in the byte count to sign, as a parameter to the code signing tool binary, for the CSF command [Authenticate Data] like so:
Verification index = 2
Blocks = 0x80000400 0x400 $(SignatureSize) "./image.bin"
The code signing tool user's guide does not advertise any such capability. Still, I wonder if (for example) an environment variable can be interpreted by the CSF script parser. Does the CSF interpreter facilitate input parameters by any means?