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Enigma G Simulators
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Enigma G simulator in Javascript
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Anton Haddeman · PA3DBJ · 2001
Version 2.0, 20 June 2004
In 2001, when I was looking for information about Enigma machines, there was
no simulator for the "Schlüssel G" machine I had seen in a museum. This model
has been sold commercially in the late 1920s 1 and early 1930s, and was used before and
during World War II (WWII) by the
German Intelligence Service — the Abwehr —
as well as the Dutch Royal Navy (Koninklijke Marine).
I decided to make a simulator that looked somewhat like the original machine,
and wrote a few lines of code in Javascript. The simulator should work in
any browser that supports Javascript.
It is wired similar to the G-312, the Abwehr model on display in the museum at
Bletchley Park, and I tested it for compatibility. I have included a
small glossary at the bottom of this page.
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In 1928, the predecessor of the Enigma G
— Zählwerk Enigma A28 —
was bought by the Dutch Navy for evaluation. It is compatible with
Enigma G,
but has the same form factor as the regular commercial machines.
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Grundstellung
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Start position
Starting position, as read through the windows from the rings of the rotors.
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Ringstellung
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Ring setting
Ring setting, the alignment between the electrical wiring in the core and the mechanical
stepping at the ring of a rotor.
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Walzenlage
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Rotor order
Order in which the rotors are place in the machine from left to right.
The rotors of the G-312 are numbered I, II and III.
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- Anton Haddeman (PA3DBJ), Enigma G-312 simulator in Javascript
2001. Version 2,0, 20 June 2004.
This simulator used to be hosted on Anton's personal homepage,
which was cancelled by his provider in August 2024.
It is now hosted here.
➤ Contact the author
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© Crypto Museum. Created: Tuesday 11 August 2009. Last changed: Saturday, 03 August 2024 - 16:08 CET.
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