Diploma in mathematics, University Göttingen, Germany, 1973. Dr rer national, University Erlangen, Germany, 1978. DrIng Habilitation, University Erlangen, Germany, 1984.
Scientific assistant University Erlangen, 1974-1978, assistant professor computer science, 1978-1984. Professor, head department University London, 1984-1985. Professor University Karlsruhe, Germany, since 1985.
Honorary professor King's College, University London, 1985. Visiting professor University Innsbruck, 1995. Distinguished lecturer department computer science University California, Santa Barbara, 1997.
Director Europäisches Institute Systemsicherheit, Karlsruhe, since 1986, IACR, Santa Barbara, 1989-1992. Speaker Institute Algorithmen und Kognitive Systeme, Karlsruhe, since 1985. Consultant to industrial firms in electronics, optics and cryptology.
Speaker in field.
Fellow IBFI (directorial). Member Institute of Electrical and Electronics Engineers, American Mathematics Society, German Mathematics Union, International Association Cryptologic Research, Association for Computing Machinery, Institute Theoretical Physics, Gesellschaft für Informatik.