Toru AKISHITA


Efficient Hyperelliptic Curve Cryptosystems Using Theta Divisors
Masanobu KATAGI Toru AKISHITA Izuru KITAMURA Tsuyoshi TAKAGI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/01/01
Vol. E89-A  No. 1  pp. 151-160
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Elliptic Curve Cryptography
Keyword: 
hyperelliptic curve cryptosystemscalar multiplicationtheta divisorwindow method
 Summary | Full Text:PDF(287.7KB)

On the Optimal Parameter Choice for Elliptic Curve Cryptosystems Using Isogeny
Toru AKISHITA Tsuyoshi TAKAGI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/01/01
Vol. E88-A  No. 1  pp. 140-146
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Tamper-Resistance
Keyword: 
elliptic curve cryptosystemsisomorphismisogenyside channel attackzero-value point attack
 Summary | Full Text:PDF(151KB)

Zero-Value Register Attack on Elliptic Curve Cryptosystem
Toru AKISHITA Tsuyoshi TAKAGI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/01/01
Vol. E88-A  No. 1  pp. 132-139
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Tamper-Resistance
Keyword: 
side channel attackdifferential power analysiselliptic curve cryptosystemaddition formulazero-value register
 Summary | Full Text:PDF(165.1KB)