Does anyone know how the files are renamed when they are being uploaded?

So far I have down that it uses "file_date_time_????_portalid.extension" how are the letters after the time and before the portal id generated? Please and thank you.

The question marks are actually randomly generated. Why? Well, that avoids a targeted attack to sweep all files in DMX. The "portalid" part is actually something that should be "0" and is not a portal id. Instead it avoids clashes by auto increasing if necessary.

Peter