Hans Dobbertin
German cryptographer
Hans Dobbertin was a German cryptographer who is best known for his work on cryptanalysis of the MD4, MD5, and original RIPEMD hash functions, and for his part in the design of the new version of the RIPEMD hash function. Wikipedia
Born: April 17, 1952, Herkensen, Coppenbrügge, Germany
Died: February 2, 2006 (age 53 years), Bochum, Germany
Notable students: Patrick Felke, Magnus Daum, and Nils-Gregor Leander
Alma mater: University of Hannover