Degrees and Experience

Department of Mathematics, Faculty of Science, Kyushu University
Awarded degree of BSc in Mathematics

April of 1986 -- March of '88

Department of Applied Mathematics, Faculty of Enginnering, Kyushu University
Awarded degree of MSc in Applied Mathematics for a thesis entitled ``Fuchsian systems associated with the $P^{2}(F_2)$-arrangement.''

April of 1988 -- Feb. of '94

Research Engineer, Mitsubishi Electroric Corp. Computer \& Information Systems Lab.,
Research and development of cryptography and information security, supervised by Dr. Tohru INOUE and Mr. Atsuhiro Yamagishi

PhD: June of 1993

Department of Computer Scinece and Communication Engineering , Faculty of Engineering, Kyushu University
Awarded degree of PhD in Computer Science for a thesis entitled ``Studies on the Efficiency and the Security of Cryptographic Protocolsbased on the Zero-Knowledge Techniques.''

Note that Japanese universities give PhD certificates to researchers who are working for a private company, even if they take no doctor course at the university, after checking their written thesis.

March of 1994

Associate Professor of KYUSHU UNIVERSITY, Dept of Computer Science and Communication Engineering

Sept. of 1997 for one year

Visiting Scholar (sponsored by Prof. Zvi Galil)
Dept. of Computer Science, Columbia Univ.

April of 2002 -- Now

Full Professor of KYUSHU UNIVERSITY, Dept of Computer Science and Communication Engineering