is an

information theorist Information theory is the scientific study of the quantification, storage, and communication of information. The field was originally established by the works of Harry Nyquist and Ralph Hartley, in the 1920s, and Claude Shannon in the 1940s. T ...

and cryptographer, currently the director of Research Center for Information Security ( RCIS),

National Institute of Advanced Industrial Science and Technology The , or AIST, is a Japanese research facility headquartered in Tokyo, and most of the workforce is located in Tsukuba Science City, Ibaraki, and in several cities throughout Japan. The institute is managed to integrate scientific and engineeri ...

(AIST) and a full professor at

Chuo University , commonly referred to as or , is a private flagship research university in Tokyo, Japan. Founded in 1885 as Igirisu Hōritsu Gakkō (the English Law School), Chuo is one of the oldest and most prestigious institutions in the country. The univer ...

. His notable work includes research in

coding theory Coding theory is the study of the properties of codes and their respective fitness for specific applications. Codes are used for data compression, cryptography, error detection and correction, data transmission and data storage. Codes are stud ...

block cipher In cryptography, a block cipher is a deterministic algorithm operating on fixed-length groups of bits, called ''blocks''. Block ciphers are specified cryptographic primitive, elementary components in the design of many cryptographic protocols and ...

design, and

public-key cryptography Public-key cryptography, or asymmetric cryptography, is the field of cryptographic systems that use pairs of related keys. Each key pair consists of a public key and a corresponding private key. Key pairs are generated with cryptographic alg ...

. In 1977, together with Hirakawa, he proposed a coded multilevel signal modulation scheme using several classes of binary error-correcting codes, whose symbols are combined to set up the transmission signal. This scheme is known as the Imai-Hirakawa code. He received his

Ph.D. A Doctor of Philosophy (PhD, Ph.D., or DPhil; Latin: or ') is the most common degree at the highest academic level awarded following a course of study. PhDs are awarded for programs across the whole breadth of academic fields. Because it is a ...

electrical engineering Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the l ...

from the University of Tokyo in 1971. He was on the faculty of

Yokohama National University , mottoeng = Initiative for Global Arts & Sciences , established = 1876 (chartered 1949) , type = National , president = Izuru Umehara , city = Yokohama, Kanagawa , country = Japan , undergrad = 7,298 as of 1 May 2020 , postgrad = 2,302 a ...

from then until 1992, before he joined the faculty of the

University of Tokyo , abbreviated as or UTokyo, is a public research university located in Bunkyō, Tokyo, Japan. Established in 1877, the university was the first Imperial University and is currently a Top Type university of the Top Global University Project by ...

. He has been the director of RCIS since 2005. He became a professor at Chuo University in April 2006. He became an

IEEE The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operation ...

Fellow in 1992, and an IACR Fellow in 2007.

References

External links

Hideki Imai's page at IIS

ResearchMap profile
Living people 1943 births Japanese information theorists Modern cryptographers University of Tokyo alumni International Association for Cryptologic Research fellows Yokohama National University faculty University of Tokyo faculty {{crypto-bio-stub