MAKI YOSHIDA

In 1998, Maki Yoshida skipped a grade and entered the first term of a doctoral program at Osaka University Graduate School of Engineering Science, Department of Information and Mathematics and received Research Fellowship for Young Scientists (DC1) from the Japan Society for the Promotion of Science. She has received her Ph.D. in 2001. Since 2001, she has worked as an assistant professor at Osaka University, and since 2013, she has been a senior researcher at the National Institute of Information and Communications Technology (NICT). She was the director of the Japan Industrial and Applied Mathematics (JSIAM) from 2016 to 2018 and Vice President of JSIAM from 2022. She engaged in research and development in the field of information security, particularly the optimal construction of cryptographic protocols, cryptographic algorithms, and digital watermarking, their formal verification, and analysis of the difficulties of mathematical problems on which the security of cryptosystems is based. She realized time-capsule cryptosystems and digital watermarking for cryptographic data and further invented the first trapdoor one-way function (called the vector decomposition problem) other than that based on prime factorization. Recently, she has been engaged in research and development to guarantee low-cost yet highly secure communication systems for the NewSpace era; in particular, in 2021, she succeeded in establishing information theoretical security in actual wireless communication from a space vehicle to a ground station.

Research interests

Information security, cryptography, information theory

Keyword

Information security, cryptography, information theory, secret sharing, authentication with secrecy, space communication