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Britannica Encyclopedia: code

The ADFGVX cipher, employed by the German army in World War I. [Credit: ]

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The ADFGVX cipher, employed by the German army in World War I. [Credit: ]
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Flow diagram for the 16-step Data Encryption Standard (DES) operation. [Credit: From Data Encryption Standard, FIPS Publ. no. 46, National Bureau of ...

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Flow diagram for the 16-step Data Encryption Standard (DES) operation. [Credit: From Data Encryption Standard, FIPS Publ. no. 46, National Bureau of ...
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The Vigenère table In encrypting plaintext, the cipher letter is found at the intersection of the column headed by the plaintext letter and the row ...

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The Vigenère table In encrypting plaintext, the cipher letter is found at the intersection of the column headed by the plaintext letter and the row ...
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Frequency distribution for plaintext and its repeated-key Vigenère cipher The most frequent plaintext letter is assigned a value of 100 and the ...

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Frequency distribution for plaintext and its repeated-key Vigenère cipher The most frequent plaintext letter is assigned a value of 100 and the ...
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Enigma cipher machine of World War II The German navy employed various versions of the Enigma cipher machine during the war, including this four-rotor ...

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Enigma cipher machine of World War II The German navy employed various versions of the Enigma cipher machine during the war, including this four-rotor ...
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Japanese Jade cipher machine of World War II The Japanese Jade cipher machine was a variant of the Purple cipher machines in use during the war. It ...

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Japanese Jade cipher machine of World War II The Japanese Jade cipher machine was a variant of the Purple cipher machines in use during the war. It ...
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Japanese Purple cipher machine of World War II Although no Japanese Purple cipher machines survived the war, this is a functional analog of the ...

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Japanese Purple cipher machine of World War II Although no Japanese Purple cipher machines survived the war, this is a functional analog of the ...
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Page last updated: 2013-06-26

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