Rotor machine

A series of three rotors from an Enigma machine, used by Germany during World War II

40-point rotors from a machine made by Tatjana van Vark

The rotor stack from an Enigma rotor machine. The rotors of this machine contain 26 contacts.

In cryptography, a rotor machine is an electro-mechanical stream cipher device used for encrypting and decrypting secret messages. Rotor machines were the cryptographic state-of-the-art for a prominent period of history; they were in widespread use in the 1920s–1970s. The most famous example is the German Enigma machine, whose messages were deciphered by the Allies during World War II, producing intelligence code-named Ultra.

单词	Rotor machine
释义	Rotor machine 英语百科 Rotor machine In cryptography, a rotor machine is an electro-mechanical stream cipher device used for encrypting and decrypting secret messages. Rotor machines were the cryptographic state-of-the-art for a prominent period of history; they were in widespread use in the 1920s–1970s. The most famous example is the German Enigma machine, whose messages were deciphered by the Allies during World War II, producing intelligence code-named Ultra.
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