Hideki Imai
Encyclopedia
is an information theorist and cryptographer, currently the director of Research Center for Information Security (RCIS
), National Institute of Advanced Industrial Science and Technology
(AIST) and a full professor at Chuo University
. His notable work includes research in coding theory
, block cipher
design, and public-key cryptography
.
In 1977, together with Hirakawa, he proposed a coded multilevel signal modulation scheme. The scheme uses several classes of binary error-correcting codes, symbols of which are combined to set up the transmission signal. The scheme is known as Imai-Hirakawa code.
He received his Ph.D.
in electrical engineering
from the University of Tokyo in 1971. He was on the faculty of Yokohama National University
from then until 1992, before he joined the faculty of the University of Tokyo
. He has been the director of RCIS since 2005. He became a professor at Chuo University in April 2006.
He became an IEEE Fellow in 1992, and an IACR
Fellow in 2007.
RCIS
The , currently located in Akihabara, Tokyo, Japan, is a research unit of National Institute of Advanced Industrial Science and Technology .-Organization:...
), National Institute of Advanced Industrial Science and Technology
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 engineering knowledge to address socio-economic needs...
(AIST) and a full professor at Chuo University
Chuo University
Chuo University is a one of the Japanese leading universities. Thus it is competitive in several rankings such as shown below.-General Rankings:The university has been ranked 27th, 25th, 34th during 2008-2010 respectively in the ranking "Truly Strong Universities" by Toyo Keizai.-Research...
. His notable work includes research in coding theory
Coding theory
Coding theory is the study of the properties of codes and their fitness for a specific application. Codes are used for data compression, cryptography, error-correction and more recently also for network coding...
, block cipher
Block cipher
In cryptography, a block cipher is a symmetric key cipher operating on fixed-length groups of bits, called blocks, with an unvarying transformation. A block cipher encryption algorithm might take a 128-bit block of plaintext as input, and output a corresponding 128-bit block of ciphertext...
design, and public-key cryptography
Public-key cryptography
Public-key cryptography refers to a cryptographic system requiring two separate keys, one to lock or encrypt the plaintext, and one to unlock or decrypt the cyphertext. Neither key will do both functions. One of these keys is published or public and the other is kept private...
.
In 1977, together with Hirakawa, he proposed a coded multilevel signal modulation scheme. The scheme uses several classes of binary error-correcting codes, symbols of which are combined to set up the transmission signal. The scheme is known as Imai-Hirakawa code.
He received his Ph.D.
Ph.D.
A Ph.D. is a Doctor of Philosophy, an academic degree.Ph.D. may also refer to:* Ph.D. , a 1980s British group*Piled Higher and Deeper, a web comic strip*PhD: Phantasy Degree, a Korean comic series* PhD Docbook renderer, an XML renderer...
in electrical engineering
Electrical engineering
Electrical engineering is a field of engineering that generally deals with the study and application of electricity, electronics and electromagnetism. The field first became an identifiable occupation in the late nineteenth century after commercialization of the electric telegraph and electrical...
from the University of Tokyo in 1971. He was on the faculty of Yokohama National University
Yokohama National University
, or is a national university in Hodogaya-ku, Yokohama, Kanagawa Prefecture, Japan. It offers Doctoral degrees in education as part of a coalition with Tokyo Gakugei University, Saitama University, and Chiba University. It is noted for its Business Administration program.-History:The predecessor...
from then until 1992, before he joined the faculty of the University of Tokyo
University of Tokyo
, abbreviated as , is a major research university located in Tokyo, Japan. The University has 10 faculties with a total of around 30,000 students, 2,100 of whom are foreign. Its five campuses are in Hongō, Komaba, Kashiwa, Shirokane and Nakano. It is considered to be the most prestigious university...
. He has been the director of RCIS since 2005. He became a professor at Chuo University in April 2006.
He became an IEEE Fellow in 1992, and an IACR
International Association for Cryptologic Research
The International Association for Cryptologic Research is a non-profit scientific organization whose purpose is to further research in cryptology and related fields...
Fellow in 2007.