Signing the jnidispatch.dll

Is it possible to get a digital signature for the jnidispatch.dll that is located in the jna-5.12.1.jar\com\sun\jna\win32-x86-64\jnidispatch.dll . If possible all of the jnidispatch.dll would be nice. This could be something good for security of the application itself as well as more security for the users of the application.