La machine de chiffrement nazi allemande Enigma M4 utilisée pendant la Seconde Guerre mondiale Bletchley Park, Buckinghamshire. ROYAUME-UNI

• Contributeur: parkerphotography / Alamy Banque D'Images
• ID de l’image: EKDK95
• Taille du fichier: 50,4 MB (2,2 MB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 3429 x 5137 px | 29 x 43,5 cm | 11,4 x 17,1 inches | 300dpi
• Date de la prise de vue: 6 avril 2015
• Lieu: Bletchley Park, Bletchley, Buckinghamshire, England, United Kingdom

Informations supplémentaires

Enigma M4 was an electromechanical cipher machine, developed during WWII, for use by certain divisions of the Kriegsmarine (German Navy) — in particular for the U-Boats. 1 It was intended as a more secure version of the Enigma M3, which was based on the German Army Enigma I. The M4 played a pivoting role in the Battle of the Atlantic and was introduced unexpected on 2 February 1942, causing great upset with the allied codebreakers at Bletchley Park (BP), where its traffic was known as SHARK. It remained unbroken for nine months until new key sheets were captured.

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