K
Kazumaro Aoki
Researcher at Waseda University
Publications - 6
Citations - 487
Kazumaro Aoki is an academic researcher from Waseda University. The author has contributed to research in topics: Block cipher & Encryption. The author has an hindex of 4, co-authored 6 publications receiving 485 citations.
Papers
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Camellia: A 128-Bit Block Cipher Suitable for Multiple Platforms
Kazumaro Aoki,Tetsuya Ichikawa,Masayuki Kanda,Mitsuru Matsui,Shiho Moriai,Nakajima Junko,Toshio Tokita,Nippon Telegraph +7 more
TL;DR: Camellia as discussed by the authors is a new 128-bit block cipher with 128-, 192-, and 256-bit key lengths, which was designed to withstand all known cryptanalytic attacks and even to have a sufficiently large security leeway for use of the next 10-20 years.
Speci cation of Camellia | a 128-bit Block Cipher
Kazumaro Aoki,Tetsuya Ichikawa,Masayuki Kanda,Mitsuru Matsui,Shiho Moriai,Nakajima Junko,Toshio Tokita +6 more
TL;DR: Notations and Conventions 2.2.1 Radix 2.3 List of Symbols 2.4 Bit/Byte Ordering 2.5 Bit/ Byte Ordering.
Patent
Data transformation device and recording medium having recorded thereon a program for implementing the same
TL;DR: In this paper, a plurality of round processing parts (38) are provided each of which contains a nonlinear function part (304), and each non linear function part comprises: a first keydependent linear transformation part (341) which performs a linear transformation based on a subkey; a splitting part (342) which splits the output from the first key-dependent linear transform part into n pieces of subdata, respectively; a first nonlinear transform part (343) which nonlinearly transforms those subdata and a combining part (346) which combines the nonlinear transformed outputs
Book ChapterDOI
Linear Cryptanalysis of the Fast Data Encipherment Algorithm
Kazuo Ohta,Kazumaro Aoki +1 more
TL;DR: It has been confirmed that the entire subkeys used in FEAL-8 can be derived with 225 pairs of known plaintexts and ciphertexts with a success rate approximately 70% spending about 1 hour using a WS.
Patent
Data converting device and data converting method
TL;DR: In this article, the authors proposed a data converting device to perform plural sub-conversion processing in parallel, which can speed up the data conversion processing such as encipher, decipher, and data diffusion.