PublicKey from .dll or .snk or .pfx

PublicKey.bat

@echo off
:: PublicKey <.dll or .snk or .pfx>

set file=%1 & set ext=%~x1
if not exist %file% goto notfound

if "%ext%"==".dll" (
    call sn -q -Tp %file% || goto err
    goto exit
)
if not "%ext%"==".snk" if not "%ext%"==".pfx"  goto invalid

set pubkey="%~1_pubkey_%random%%random%%ext%"
call sn -q -p %file% %pubkey% || goto err
call sn -tp %pubkey% || goto err
goto exit

:cleanup
    if defined pubkey if exist %pubkey% (
        del %pubkey% /Q/F
    )
exit /B 0

:notfound
    echo File '%file%' was not found. 1>&2
exit /B 2

:invalid
    echo Unsupported file type '%ext%'. Try with .dll; .snk; .pfx 1>&2
exit /B 1

:err
    call :cleanup
    echo Something went wrong 1>&2
exit /B 1

:exit
    call :cleanup
exit /B 0