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Erschienen in:
2010 | OriginalPaper | Buchkapitel
The Enigma Machine
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Abstract
Since ancient times men have dreamed of constructing an automatic coding machine. As far as we know, the first attempt was made by the Renaissance architect Leon Battista Alberti (1404–1472), who positioned one concentric disk on top of another, each one inscribed with all the letters of the alphabet. By turning one disk to a certain position with respect to the other, he was able to pair each letter with another, which served to automate the task of encrypting messages by substituting letters. The device may only have mechanically reproduced actions that could be done mentally, but it did ensure that no substitution errors were made in the process.