Rotor Machines
Essay specific features
Written by:
Elizabeth L
Date added:
October 11, 2010
Level:
University
Grade:
A
No of pages / words:
9 / 2360
Was viewed:
10010 times
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Essay content:
Rotor machines were the cryptographic state-of-the-art for a brief but prominent period of history; they were in widespread use in the 1930s–1950s. The most famous example is the Enigma machine.
The primary component is a set of rotors, also termed wheels or drums, which are rotating disks with an array of electrical contacts on either side...
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The wiring between the contacts implements a fixed substitution of letters, scrambling them in some complex fashion. On its own, this would offer little security; however, after encrypting each letter, the rotors advance positions, changing the substitution. By this means, a rotor machine produces a complex polyalphabetic substitution cipher...
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