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The Enigma Machine was a piece of cryptographic hardware used by the German military during World War II; successful cryptanalysis was routinely applied against it and the scheme was considered broken. Questions relating to this machine should use this tag and you may also which to use the historic tag.

2 votes

Why isn't my Enigma simulator working?

You might find this Enigma simulator written in Python, by Brian Neal useful for testing your simulator - generating test cases programatically with that should be a lot easier than running an online simulator …
Matthew Towers's user avatar
1 vote

Enigma machine Rejewski cataluge and ring settings

Rejewski says, in one of the appendices to Enigma: How the German Machine Cipher Was Broken and How It Was Read by the Allies in World War Two by Kozaczuk that about half of all plaintext messages began … Once they'd got the plugboard settings and the rotor order and window-ring difference from the catalogue they would set up a replica Enigma machine accordingly and encrypt ANX in every possible window …
Matthew Towers's user avatar