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  2. Cryptanalysis of the Enigma - Wikipedia

    en.wikipedia.org/wiki/Cryptanalysis_of_the_Enigma

    The British read unsteckered Enigma messages sent during the Spanish Civil War, [15] and also some Italian naval traffic enciphered early in World War II. The strength of the security of the ciphers that were produced by the Enigma machine was a product of the large numbers associated with the scrambling process.

  3. Dilly Knox - Wikipedia

    en.wikipedia.org/wiki/Dilly_Knox

    The Germany Navy (Kriegsmarine) adopted Enigma in 1926, adding a plug-board (stecker) to improve security. Nazi Germany supplied non-stecker ed machines to Franco's Nationalists in the Spanish Civil War. On 24 April 1937, Knox broke the Spanish Enigma but knowledge of this breakthrough was not shared with the Republicans.

  4. World War II cryptography - Wikipedia

    en.wikipedia.org/wiki/World_War_II_cryptography

    The nations involved fielded a plethora of code and cipher systems, many of the latter using rotor machines. As a result, the theoretical and practical aspects of cryptanalysis, or codebreaking, were much advanced. Possibly the most important codebreaking event of the war was the successful decryption by the Allies of the German "Enigma" Cipher.

  5. Enigma machine - Wikipedia

    en.wikipedia.org/wiki/Enigma_machine

    Agents sent messages to the Abwehr in a simple code which was then sent on using an Enigma machine. The simple codes were broken and helped break the daily Enigma cipher. This breaking of the code enabled the Double-Cross System to operate. [19] From October 1944, the German Abwehr used the Schlüsselgerät 41 in limited quantities. [20]

  6. List of people associated with Bletchley Park - Wikipedia

    en.wikipedia.org/wiki/List_of_people_associated...

    Dilly Knox, leading cryptologist, cracked the code of the commercial Enigma machines used in the Spanish Civil War, one of the British participants in the conference in which the Poles disclosed to their French and British allies their achievements in Enigma decryption, broke the Abwehr non-steckered Enigma

  7. Bletchley Park - Wikipedia

    en.wikipedia.org/wiki/Bletchley_Park

    Hut 3: Intelligence: translation and analysis of Army and Air Force decrypts [89] Hut 4: Naval intelligence: analysis of Naval Enigma and Hagelin decrypts [90] Hut 5: Military intelligence including Italian, Spanish, and Portuguese ciphers and German police codes. [91] Hut 6: Cryptanalysis of Army and Air Force Enigma [92]

  8. Zygalski sheets - Wikipedia

    en.wikipedia.org/wiki/Zygalski_sheets

    Kozaczuk, Władysław (1984), Enigma: How the German Machine Cipher was Broken, and how it was Read by the Allies in World War Two, edited and translated by Christopher Kasparek (2 ed.), Frederick, Maryland: University Publications of America, ISBN 978-0890935477 A revised and augmented translation of W kręgu enigmy, Warsaw, Książka i Wiedza ...

  9. X, Y & Z - Wikipedia

    en.wikipedia.org/wiki/X,_Y_&_Z

    The title refers to the French, British and Polish teams which worked on breaking the Enigma cipher, known by shorthand as "X", "Y" and "Z", respectively. The Enigma cipher, produced by the Enigma machine, was used from the 1920s to the end of World War II by Germany—later Nazi Germany—for military and other high security communications.