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Dive into the research topics where Takatoshi Ono is active.

Publication


Featured researches published by Takatoshi Ono.


international conference on information and communication security | 1997

Efficient elliptic curve exponentiation

Atsuko Miyaji; Takatoshi Ono; Henri Cohen

Elliptic curve cryptosystems, proposed by Koblitz([8]) and Miller([11]), can be constructed over a smaller definition field than the ElGamal cryptosystems([5]) or the RSA cryptosystems( [16]). This is why elliptic curve cryptosystems have begun to attract notice. There are mainly two types in elliptic curve cryptosystems, elliptic curves E over IF2r and E over IFp. Some current systems based on ElGamal or RSA may often use modulo arithmetic over IFp. Therefore it is convenient to construct fast elliptic curve cryptosystems over IFp. In this paper, we investigate how to implement elliptic curve cryptosystems on E/IFp.


Archive | 2003

Content playback apparatus method and program and key management apparatus and system

Takatoshi Ono; Yoji Kumazaki; Shigeru Yamada; Hiroki Murakami; Tetsuya Inoue; Motoji Ohmori


Archive | 1998

Elliptic curve calculation apparatus capable of calculating multiples at high speed

Atsuko Miyaji; Takatoshi Ono


Archive | 2004

Trackball device and vehicle incorporating the same

Takatoshi Ono; Takefumi Inoue


Archive | 2003

REPRODUCING APPARATUS AND REPRODUCING METHOD FOR REPRODUCING CONTENTS, PROGRAM, KEY MANAGEMENT APPARATUS AND KEY MANAGEMENT SYSTEM

Tetsuya Inoue; Hiroji Kumazaki; Hironori Murakami; Motoji Omori; Takatoshi Ono; Shigeru Yamada; 哲也 井上; 基司 大森; 貴敏 小野; 茂 山田; 弘規 村上; 洋児 熊崎


Archive | 2004

RSA public key generation apparatus, RSA decryption apparatus, and RSA signature apparatus

Takatoshi Ono; Natsume Matsuzaki; Yuichi Futa


Archive | 2000

Digital data recording device, digital data memory device, and digital data utilizing device for converting management information which contains restrictive information using a different key in each management information send/receive session

Takatoshi Ono; Shunji Harada


Archive | 2000

Device, method, and storage medium for exponentiation and elliptic curve exponentiation

Takatoshi Ono; Natsume Matsuzaki


Archive | 2002

Information security device, prime number generation device, and prime number generation method

Yuichi Futa; Takatoshi Ono; Motoji Ohmori


Archive | 2000

Multi-word arithmetic device for faster computation of cryptosystem calculations

Natsume Matsuzaki; Yasuo Okumura; Takatoshi Ono

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Henri Cohen

University of Bordeaux

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