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Henri Braquenié was an interbellum and World War II French Air Force officer and cryptanalyst. Captain Braquenié attended, with French Major Gustave Bertrand and another French Army officer, the 9–10 January 1939 Paris meeting of French, Polish and British military intelligence officers convened to discuss progress (none had occurred in France or Britain) on decryption of German Enigma ciphers. Braquenié also participated with Bertrand in the trilateral 25 July 1939 Warsaw meeting at which the Polish Cipher Bureau disclosed its achievements in breaking Enigma ciphers (since December 1932).

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  • Henri Braquenié (de)
  • Henri Braquenié (en)
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  • Henri Braquenié (* 1896; † 1975) war ein französischer Geheimdienstmitarbeiter und Kryptoanalytiker, der in Zusammenarbeit mit dem polnischen Biuro Szyfrów (BS) (deutsch: „Chiffrenbüro“) und der britischen Government Code and Cypher School (G.C. & C.S.) (deutsch etwa: „Staatliche Code- und Chiffrenschule“) im englischen Bletchley Park (B.P.) vor und während des Zweiten Weltkriegs wesentlich zum frühen Bruch der deutschen Rotor-Schlüsselmaschine Enigma beigetragen hat. (de)
  • Henri Braquenié was an interbellum and World War II French Air Force officer and cryptanalyst. Captain Braquenié attended, with French Major Gustave Bertrand and another French Army officer, the 9–10 January 1939 Paris meeting of French, Polish and British military intelligence officers convened to discuss progress (none had occurred in France or Britain) on decryption of German Enigma ciphers. Braquenié also participated with Bertrand in the trilateral 25 July 1939 Warsaw meeting at which the Polish Cipher Bureau disclosed its achievements in breaking Enigma ciphers (since December 1932). (en)
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  • Henri Braquenié (* 1896; † 1975) war ein französischer Geheimdienstmitarbeiter und Kryptoanalytiker, der in Zusammenarbeit mit dem polnischen Biuro Szyfrów (BS) (deutsch: „Chiffrenbüro“) und der britischen Government Code and Cypher School (G.C. & C.S.) (deutsch etwa: „Staatliche Code- und Chiffrenschule“) im englischen Bletchley Park (B.P.) vor und während des Zweiten Weltkriegs wesentlich zum frühen Bruch der deutschen Rotor-Schlüsselmaschine Enigma beigetragen hat. (de)
  • Henri Braquenié was an interbellum and World War II French Air Force officer and cryptanalyst. Captain Braquenié attended, with French Major Gustave Bertrand and another French Army officer, the 9–10 January 1939 Paris meeting of French, Polish and British military intelligence officers convened to discuss progress (none had occurred in France or Britain) on decryption of German Enigma ciphers. Braquenié also participated with Bertrand in the trilateral 25 July 1939 Warsaw meeting at which the Polish Cipher Bureau disclosed its achievements in breaking Enigma ciphers (since December 1932). During the period of the Phony War (6 October 1939 – 10 May 1940) Braquenié served as deputy to the French chief, Bertrand, of "PC Bruno," the Franco-Polish radio-intelligence and cryptology center outside Paris. On 3–7 December 1939 Braquenié accompanied the chief of the Polish cryptologic team, Lt. Col. Gwido Langer, to London and Bletchley Park. At Bletchley, Braquenié established the procedures for mutual teleprinter exchange of information, especially of solved daily Enigma keys. In 1975, shortly before his death, he disclosed that, to ensure the absolute security of the information exchanges, the allied cryptologic services used Enigma itself as their cipher. Braquenié, personally responsible for the Bruno-Bletchley correspondence, followed the standard procedure of padding messages with innocuous verbiage, and habitually closed them with a "Heil Hitler!" Following France's capitulation in June 1940, Braquenié evacuated south to unoccupied, Vichy France with other Bruno staff, and subsequently served at the "Cadix" center that was then established near Uzès, not far from the Mediterranean Sea. (en)
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