Historical Enigma Data

This document provides the sources and details for the historical Enigma machine components (rotors and reflectors) included in the assets/historical/ directory.

Machine: Enigma I (Wehrmacht/Luftwaffe)

The Enigma I was the standard machine used by the German Army (Wehrmacht) and Air Force (Luftwaffe) during World War II. It featured three rotors selected from a set of five and one of several reflectors.

Rotor Wiring & Notches

Rotor	Wiring (A-Z)	Notch (Pos)	Notch (Char)
I	EKMFLGDQVZNTOWYHXUSPAIBRCJ	16	Q
II	AJDKSIRUXBLHWTMCQGZNPYFVOE	4	E
III	BDFHJLCPRTXVZNYEIWGAKMUSQO	21	V
IV	ESOVPZJAYQUIRHXLNFTGKDCMWB	9	J
V	VZBRGITYUPSDNHLXAWMJQOFECK	25	Z

Note: The notchPosition in the TOML files represents the zero-based index where the notch is located on the rotor's physical ring.

Reflector Wiring (Umkehrwalze)

Reflector	Wiring (A-Z)	Description
UKW-A	EJMZALYXVBWFCRQUONTSPIKHGD	Early pre-war reflector.
UKW-B	YRUHQSLDPXNGOKMIEBFZCWVJAT	Standard wartime reflector.
UKW-C	FVPJIAOYEDRZXWGCTKUQSBNMHL	Late-war reflector.

Data Format

In the assets/historical/*.toml files, the wiring is converted from the A-Z strings to zero-based integer arrays (0 for A, 25 for Z).

Example conversion for Rotor I: E -> 4, K -> 10, M -> 12, ...

Sources

The wiring and notch data were gathered from the following authoritative sources:

1. Crypto Museum: Enigma wiring
2. Cipher Machines and Cryptology: Enigma Rotors and Wiring
3. Tony Sale's Codes and Ciphers: Technical Details of the Enigma Machine
4. Wikipedia: Enigma rotor details