![]() ![]() On 25 July 1939, in Warsaw, the Poles initiated French and British military intelligence representatives into their Enigma-decryption techniques and equipment, including Zygalski sheets and the cryptologic bomb, and promised each delegation a Polish-reconstructed Enigma. This work was an essential foundation to further work on decrypting ciphers from repeatedly modernized Enigma machines, first in Poland and after the outbreak of war in France and the UK. Subsequently the three mathematicians designed mechanical devices for breaking Enigma ciphers, including the cryptologic bomb. Rejewski " reverse-engineered" the device, using theoretical mathematics and material supplied by French military intelligence. This success was a result of efforts by three Polish cryptologists, Marian Rejewski, Jerzy Różycki and Henryk Zygalski, working for Polish military intelligence. German military texts enciphered on the Enigma machine were first broken by the Polish Cipher Bureau, beginning in December 1932. Several different Enigma models were produced, but the German military models are the most commonly discussed. Early models were used commercially from the early 1920s, and adopted by military and government services of several countries - most notably by Nazi Germany before and during World War II. Enigma was invented by the German engineer Arthur Scherbius at the end of World War I. An Enigma machine was any of a family of related electro-mechanical rotor cipher machines used in the twentieth century for enciphering and deciphering secret messages.
0 Comments
Leave a Reply. |