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Anglický jazyk
Zygalski sheets.
Autor: Lambert M. Surhone
High Quality Content by WIKIPEDIA articles! The Cipher Bureau's manual manufacture of the sheets, which for security reasons was done by the mathematician-cryptologists themselves,[4] using razor blades, was very time-consuming. By December 15, 1938, only... Viac o knihe
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O knihe
High Quality Content by WIKIPEDIA articles! The Cipher Bureau's manual manufacture of the sheets, which for security reasons was done by the mathematician-cryptologists themselves,[4] using razor blades, was very time-consuming. By December 15, 1938, only 1/3 of the job had been finished. On that date, the Germans introduced rotors IV and V, thus increasing the labor of making the sheets tenfold, since ten times as many sheets were now needed (for the now 60 possible combinations of sequences, in an Enigma machine, of 3 rotors selected from among the now 5).[5] On July 25, 1939, five weeks before the outbreak of World War II, the Polish General Staff's Cipher Bureau disclosed to their French and British allies, at Warsaw, their cryptologic achievements in breaking Enigma ciphers.[6] Part of the disclosures involved Zygalski's 'perforated-sheet' method.
- Vydavateľstvo: OmniScriptum
- Rok vydania: 2026
- Formát: Paperback
- Rozmer: 220 x 150 mm
- Jazyk: Anglický jazyk
- ISBN: 9786130362737
Ruský jazyk 
