I watched a documentary on the Enigma. The code was produced in Psuedo Random. The computers they used to break the code were as big as a warehouse and had huge bulbs.
I dont remember why , but they destroyed them directly after they cracked the code. Amazing how we have computers as small as a book now. That was a very cool documentary. Hope I didn't get any of that wrong. I'm working off of total memory. Time to do some web searching to refresh my memory. might be time for an upgrade :)