SIGABA
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In the history of cryptography, the ECM Mark II was a cipher machine used by the United States for message encryption from World War II until the 1950s. The machine was also known as the SIGABA or Con
SIGABA cipher machine at the National Cryptologic Museum, with removable rotor assembly on top
SIGABA
The rotors (wheels) and rotor unit
Top view of SIGABA showing rotor assembly and Controller switch
Rotor machine
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In cryptography, a rotor machine is an electro-mechanical stream cipher device used for encrypting and decrypting messages. Rotor machines were the cryptographic state-of-the-art for much of the 20th
40-point rotors from a machine made by Tatjana van Vark
A German Enigma machine
The rotor stack from an Enigma rotor machine. The rotors of this machine contain 26 contacts.
Typex was a printing rotor machine used by the United Kingdom and its Commonwealth, and was based on the Enigma patents.