Herbert von Denffer

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Coat of arms of those of Denffer

Herbert Julius von Denffer (born  June 24, 1907 in Narva ; †  1988 ) came from the old Courland noble family of those von Denffer . He was a German-Baltic actuary and headed a group of cryptanalysts in the Army High Command (OKH) during World War II .

Life

In 1935 he was at Adolf Hammerstein at the Humboldt University of Berlin with his dissertation "On Bernstein's theory of partial differential equations of second order of elliptic type" to the doctor of philosophy (phil Dr.) PhD . The co-referee was Ludwig Bieberbach .

During the Second World War he worked as a cryptanalyst in Inspection 7 Group VI (OKH / In 7 / VI), i.e. the deciphering group in the OKH, based on Matthäikirchplatz, not far from the Bendler block in Berlin. First, in the rank of sergeant ( Sergeant ) he was with effect from 1 March 1943, Lieutenant promoted. From April 13, 1943, he headed the newly founded department  F (research) within OKH / In 7 / VI . His deputy there was Uffz. Willi Rinow . His group dealt with checking the security of its own encryption methods , in particular the rotor cipher machine Enigma , against unauthorized deciphering (defensive cryptology ) as well as with the acquisition of information and, if possible, the breaking of encrypted foreign messages and methods (offensive cryptology). This included the machine B-211 , a further developed B-21 by the Swede Boris Hagelin .

After the war he worked for the Munich Reinsurance Company .

Fonts

  • On Bernstein's theory of partial differential equations of the second order of the elliptical type, 1935
  • Estimating premium reserves in life insurance, 1957

Web links

Individual evidence

  1. ^ Mathematics Genealogy Project, accessed September 13, 2018.
  2. ^ Army Security Agency: Notes on German High Level Cryptography and Cryptanalysis . European Axis Signal Intelligence in World War II, Vol 4, Washington (DC), 1946 (May), p. 190.
  3. ↑ Who was Harry Welsch? cryptocellartales.blogspot , accessed on September 13, 2018.
personal data
SURNAME Denffer, Herbert von
ALTERNATIVE NAMES Denffer, Herbert Julius von (full name)
BRIEF DESCRIPTION German-Baltic actuary, head of a group of cryptanalysts in the Army High Command
DATE OF BIRTH June 4, 1907
PLACE OF BIRTH Narva
DATE OF DEATH 1988