Zeroisation
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In cryptography, zeroisation is the practice of erasing sensitive parameters from a cryptographic module to prevent their disclosure if the equipment is captured. This is generally accomplished by alt
"Emergency Erase" (АВАРИЙНОЕ СТИРАНИЕ) switch, zeroize in NSA parlance, on a cryptographic device of the Soviet Strategic Rocket Forces
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
Zeroisation
…is captured. This is generally accomplished by altering or deleting the contents to prevent recovery of the data. When encryption was performed by mechanical devices, this would often mean changing all the machine's settings to some fixed, meaningless value, such as zero. On machines with letter settings rather than…
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.