the enigma machine was invented in 1918 by arthur scherbius in berlin, it was, at the time a great way to encode messages, well, until it got beat. but now you can make one out of paper. is there anything pdfs can't do? this machine is compatible with the original 3-rotor german enigma used during world war ii.  for simplicity it omits the "ring settings" and plug board, but the primary … [Read more...]