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Cipher disk
Summary
- A cipher disk is an enciphering and deciphering tool developed in the 15th Century by Leon Battista Alberti. Rather than constructing a table with the regular and cipher alphabets on it, he created two circular scales, one smaller and on a disk that he mounted concentric to the larger circle.
Soundex: C163 ( C16 D2 ) Metaphone: SFRTSK Reference |
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* This page is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Cipher disk".