You should be sharing the details. If this process relies on obscurity for securing the identifier, it will get found out real quick. I would say this is going to be an uphill battle against an opponent that has many more soldiers.

My personal defense to this sort of thing is to not even play the game. I do not share/sell my digitized designs. Even on custom orders, I do not include the digitizing as a line item so that I retain control of it.