Takeshi Koshiba received the PhD degree from Tokyo Institute of Technology, Japan. He is a full professor at the Department of Mathematics, the Faculty of Education and Integrated Arts and
Sciences, Waseda University, Japan. His interests include theoretical and applied cryptography, the
randomness in algorithms, and quantum computing and cryptography. He is a member of the IEEE.
Takeshi Koshiba received the PhD degree from Tokyo Institute of Technology, Japan. He is a full professor at the Department of Mathematics, the Faculty of Education and Integrated Arts and
Sciences, Waseda University, Japan. His interests include theoretical and applied cryptography, the
randomness in algorithms, and quantum computing and cryptography. He is a member of the IEEE.