"Martin Gillow describes his recreation of the SG-41 cipher machine as 'part digital preservation, part engineering archaeology, and part 'how on earth did this thing even work?''"
"Gillow began with a 3D scan of the machine, helpfully provided by the Deutsches Museum, and credits the Crypto Museum team for their detailed work on the machine's enciphering process."
"'I'm not sure that anyone before has dug quite as deep into the workings of this machine as I've had to do to be able to duplicate everything in detail.'"
"'It was really great to see how close my simulation had already got to their real SG-41 and to talk to them about my work!'"
Martin Gillow has developed a digital 3D model of the SG-41 cipher machine, integrating its wheels, levers, and logic. The SG-41, produced during WWII, aimed to succeed the Enigma machine. Gillow's project was inspired by visits to Bletchley Park and The National Museum of Computing. He utilized a 3D scan from the Deutsches Museum and collaborated with Crypto Museum for accuracy. In 2025, he observed a real SG-41 at GCHQ, confirming the fidelity of his simulation.
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