https://www.theregister.co.uk/2019/03/18/gchq_enigma_emulator/
By Thomas Claburn in San Francisco
The Register
18 Mar 2019
UK signals intelligence agency GCHQ, celebrating its centenary, has released
emulators for famed World War II-era cipher machines that can be run within its
web-based educational encryption app CyberChef.
"We've brought technology from our past into the present by creating emulators
for Enigma, Typex and the Bombe in #CyberChef," GCHQ said Thursday via Twitter.
"We even tested them against the real thing! Try them out for yourself!"
Enigma machines turn text into ciphertext and back again; they were used by the
German military, among others, to encrypt and decrypt messages during the
Second World War.
The machines were produced shortly after the end of World War I and initially
sold as tools for keeping commercial secrets. There were later adopted by the
German military, and in 1932 sale of the devices required military approval.
[...]
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