Hans Dobbertin

Hans Dobbertin ( born April 17, 1952 in Herkensen; † February 2nd 2006 in Bochum, Germany ) was a German mathematician and cryptologist. He was Professor of Cryptology and Information Security at the Ruhr- University Bochum.

Life

His parents were teachers Hans Dobbertin and Anneliese, born Kamp. He attended primary school from 1959 Eldagsen 1963-1969 the Tellkampfschule Hanover and modern languages ​​from 1969 to 1973 a high school.

Dobbertin studied mathematics and a doctorate in 1983 with the work Verfeinerungsmonoide, Vaught monoids, and Boolean algebras in the Department of Mathematics at the University of Hannover. He habilitated in 1986 in Hanover and joined as an associate professor with the Federal Office for Information Security (BSI). When BSI Dobbertin was involved in the analysis of hash functions and developed in the 1990s, new methods to break hash algorithms MD4 - family. He pointed out that as the successor considered safe contains MD5 vulnerabilities. With these works, he was also known as a cryptologist internationally. In 2004, this statement has been confirmed by Chinese researchers. Furthermore Dobbertin was involved in the development of the hash algorithm RIPEMD -160.

After a brief stay at the University of Klagenfurt ( Austria ) Hans Dobbertin was appointed in 2001 to the chair of Cryptology and Information Security, Ruhr- University Bochum. In 2003 he opened a founding director Horst Görtz Institute for IT Security ( HGI) of the Ruhr- University.

Other focal points of the teaching and research work of Dobbertin were block ciphers, stream ciphers, asymmetric method and elliptic curves.

Hans Dobbertin died of a cancerous condition.

Writings

  • Vincent Rijmen, Aleksandra Sowa (ed.): Advanced Encryption Standard. 4th International Conference AES, Bonn, 10 - 12th May 2004. Springer, Berlin 2005, ISBN 3-540-26557-0.
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