(Yesterday, 01:14 PM)JustAnotherTheory wrote: You are not allowed to view links. Register or Login to view.Rotating or not, cipher disks simply did not exist in the very early 1400s.
I would be surprised if that was the case.
I don't know when rotating cypher disks first appeared, but they're not exactly rocket science. I made one by myself when I was 8 or 9 years old, using the spool of a fishing line. And no, it did not come to my mind the next step... polyalphabetic/Vigenere, sigh.