Four-rotor German Naval Enigma cypher machine, MK 4, 1942.

GERMANY - MARCH 25: Introduced on Atlantic U- Boats in February 1942, the code produced by the MK 4 Enigma was not broken until December 1942, after the capture of cypher documents from U-559 in the Mediterranean. The cracking of German cypher codes by Allied intelligence was a major achievement in cryptanalysis and played a key role in the outcome of the North Atlantic U-boat engagements. (Photo by SSPL/Getty Images)
GERMANY - MARCH 25: Introduced on Atlantic U- Boats in February 1942, the code produced by the MK 4 Enigma was not broken until December 1942, after the capture of cypher documents from U-559 in the Mediterranean. The cracking of German cypher codes by Allied intelligence was a major achievement in cryptanalysis and played a key role in the outcome of the North Atlantic U-boat engagements. (Photo by SSPL/Getty Images)
Four-rotor German Naval Enigma cypher machine, MK 4, 1942.
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Editorial #:
90738361
Collection:
SSPL
Date created:
March 25, 1999
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License type:
Release info:
Not released. More information
Source:
SSPL
Object name:
10315649
Max file size:
2785 x 3504 px (9.28 x 11.68 in) - 300 dpi - 6 MB