Tatsuaki Okamoto is Director of Cryptography and Information Security Laboratory and NTT Fellow at NTT Research, Inc. His research interests include attribute-based encryption, homomorphic encryption, and functional encryption regarding security and privacy. He was awarded the Asahi Prize (2019) and the RSA Conference Award (2017) for Excellence in the Field of Mathematics. He became an International Association for Cryptologic Research Fellow in 2015. Tatsuaki holds an M.S. (1978) and Ph.D. in Engineering from the University of Tokyo (1988).