• Thumbnail for Zygalski sheets
    The method of Zygalski sheets was a cryptologic technique used by the Polish Cipher Bureau before and during World War II, and during the war also by...
    10 KB (1,188 words) - 06:07, 21 December 2023
  • Thumbnail for Henryk Zygalski
    complexities in German encryption procedures, Zygalski designed the "perforated sheets," also known as "Zygalski sheets," a manual device for finding Enigma settings...
    6 KB (509 words) - 07:37, 1 April 2024
  • bomb). Both the Zygalski-sheet method and each bomba worked for only a single scrambler rotor order, so six sets of Zygalski sheets and six bomby were...
    58 KB (6,908 words) - 14:00, 11 March 2024
  • Thumbnail for Cryptanalysis of the Enigma
    Rejewski had invented a device, the cryptologic bomb, and Henryk Zygalski had devised his sheets, to make the cipher-breaking more efficient. Five weeks before...
    138 KB (17,740 words) - 05:29, 5 July 2024
  • Thumbnail for Bomba (cryptography)
    Cryptanalysis of the Enigma – Decryption of the cipher of the Enigma machine Zygalski sheets – Cryptologic technique used in World War II Marian Rejewski, "Appendix...
    10 KB (1,312 words) - 20:15, 27 February 2024
  • Thumbnail for Marian Rejewski
    bomba, a manual method was invented by Henryk Zygalski, that of "perforated sheets" ("Zygalski sheets"), which was independent of the number of plugboard...
    72 KB (8,830 words) - 16:30, 10 June 2024
  • Thumbnail for Enigma machine
    help make a catalogue with 100,000 entries, invented and produced Zygalski sheets, and built the electromechanical cryptologic bomba (invented by Rejewski)...
    93 KB (11,271 words) - 01:24, 31 May 2024
  • Thumbnail for Bombe
    increased to ten. The Poles therefore had to return to manual methods, the Zygalski sheets. Alan Turing designed the British bombe on a more general principle...
    67 KB (7,944 words) - 10:32, 5 December 2023
  • Thumbnail for Hut 8
    provided essential clerical support including punching holes into the Banbury sheets. Hut 8 relied on Wrens to run the bombes housed elsewhere at Bletchley....
    6 KB (624 words) - 05:40, 1 May 2024
  • 2014-11-15 Casselman, Bill (December 2013), The Polish Attack on Enigma II: Zygalski sheets, Feature Column, American Mathematical Society, retrieved 2014-11-15...
    64 KB (10,530 words) - 18:37, 15 July 2024
  • Luftwaffe was doubly-enciphering their message keys so techniques such as Zygalski sheets could be used. In May 1940, the Germans stopped the doubly-enciphered...
    29 KB (3,320 words) - 16:12, 11 July 2024
  • Thumbnail for Bletchley Park
    Breaking Enigma Polish Cipher Bureau Doubles Grill Clock Cyclometer Bomba Zygalski sheets Bletchley Park Banburismus Herivel tip Crib Bombe Hut 3 Hut 4 Hut 6...
    113 KB (11,480 words) - 14:51, 20 July 2024
  • Breaking Enigma Polish Cipher Bureau Doubles Grill Clock Cyclometer Bomba Zygalski sheets Bletchley Park Banburismus Herivel tip Crib Bombe Hut 3 Hut 4 Hut 6...
    12 KB (1,087 words) - 14:33, 15 March 2024
  • Thumbnail for Cyclometer
    Enigma and Enigma machine. Zygalski sheets: invented about October 1938 by Henryk Zygalski and called "perforated sheets" by the Poles, they made possible...
    22 KB (3,070 words) - 17:35, 25 March 2024
  • Thumbnail for Hut 6
    Breaking Enigma Polish Cipher Bureau Doubles Grill Clock Cyclometer Bomba Zygalski sheets Bletchley Park Banburismus Herivel tip Crib Bombe Hut 3 Hut 4 Hut 6...
    8 KB (1,029 words) - 23:52, 21 June 2023
  • Thumbnail for Ultra (cryptography)
    slender thread first spun by three mathematicians [Rejewski, Różycki, Zygalski] working on Enigma decryption for the general staff of a seemingly negligible...
    78 KB (10,417 words) - 07:50, 25 June 2024
  • Thumbnail for MI6
    counterparts to their Enigma-decryption techniques and equipment, including Zygalski sheets and the cryptologic "Bomba", and were promised future delivery of a...
    116 KB (14,308 words) - 16:48, 24 July 2024
  • Thumbnail for Punched tape
    Novosibirsk Bit bucket Book music Friden Flexowriter Key punch Tape library Zygalski sheets Maxfield, Clive (2011-10-13). "How it was: Paper tapes and punched...
    29 KB (3,405 words) - 10:21, 25 May 2024
  • Thumbnail for Polish Enigma double
    Enigma "double" Grill Clock Cyclometer Card catalog Cryptologic bomb Zygalski sheets Lacida Locations Saxon Palace Kabaty Woods PC Bruno Cadix Personnel...
    8 KB (866 words) - 13:16, 26 May 2024
  • cryptographer and briefly in Canada. Henryk Zygalski, Poland, Biuro Szyfrów, inventor of Zygalski sheets, broke German Enigma ciphers pre-1939. Karl Stein...
    21 KB (2,421 words) - 03:14, 4 July 2024
  • Thumbnail for John R.F. Jeffreys
    perforated sheets for use in the cryptanalysis of the Enigma, a task which took over three months, completed on 7 January 1940. One type were the Zygalski sheets...
    5 KB (552 words) - 23:53, 2 June 2024
  • "X = Q−2", "H = X−4" and "B = G+3". He or she would search the deciban sheets for all distances with odds of better than 1:1 (i.e. with scores ≥ +34)...
    22 KB (2,803 words) - 02:50, 10 April 2024
  • years since December 1932: Marian Rejewski, Jerzy Różycki, and Henryk Zygalski. The Spanish team (Equipo D – Team D) was led by Faustino A.V. Camazón...
    5 KB (715 words) - 00:05, 23 May 2024
  • Thumbnail for Stanisław Leśniewski
    Enigma "double" Grill Clock Cyclometer Card catalog Cryptologic bomb Zygalski sheets Lacida Locations Saxon Palace Kabaty Woods PC Bruno Cadix Personnel...
    9 KB (805 words) - 23:48, 7 November 2023
  • Cipher Bureau chiefs asked Polish analysts Marian Rejewski and Henryk Zygalski to test the security of the Polish Lacida (or LCD) rotor cipher machine...
    6 KB (709 words) - 16:32, 10 July 2024
  • Thumbnail for Military history of Poland during World War II
    Różycki's "clock", Rejewski's "cyclometer" and "card catalog", Zygalski's "perforated sheets", and Rejewski's "cryptologic bomb" (in Polish, "bomba", precursor...
    106 KB (8,372 words) - 16:39, 22 June 2024
  • Thumbnail for Wacław Sierpiński
    Enigma "double" Grill Clock Cyclometer Card catalog Cryptologic bomb Zygalski sheets Lacida Locations Saxon Palace Kabaty Woods PC Bruno Cadix Personnel...
    15 KB (1,460 words) - 17:38, 2 June 2024
  • Enigma "double" Grill Clock Cyclometer Card catalog Cryptologic bomb Zygalski sheets Lacida Locations Saxon Palace Kabaty Woods PC Bruno Cadix Personnel...
    19 KB (2,730 words) - 11:31, 13 September 2022
  • Thumbnail for Stefan Mazurkiewicz
    Enigma "double" Grill Clock Cyclometer Card catalog Cryptologic bomb Zygalski sheets Lacida Locations Saxon Palace Kabaty Woods PC Bruno Cadix Personnel...
    3 KB (221 words) - 18:30, 2 November 2023
  • Thumbnail for Gwido Langer
    Enigma "double" Grill Clock Cyclometer Card catalog Cryptologic bomb Zygalski sheets Lacida Locations Saxon Palace Kabaty Woods PC Bruno Cadix Personnel...
    6 KB (715 words) - 07:30, 1 April 2024