Naoyuki SHINOHARA


Recovering RSA Secret Keys from Noisy Key Bits with Erasures and Errors
Noboru KUNIHIRO Naoyuki SHINOHARA Tetsuya IZU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/06/01
Vol. E97-A  No. 6  pp. 1273-1284
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
RSAkey-recoverycold boot attackside-channel attackmaximal likelihood
 Summary | Full Text:PDF(570.9KB)

A Unified Framework for Small Secret Exponent Attack on RSA
Noboru KUNIHIRO Naoyuki SHINOHARA Tetsuya IZU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/06/01
Vol. E97-A  No. 6  pp. 1285-1295
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
LLL algorithmsmall inverse problemRSAlattice-based cryptanalysis
 Summary | Full Text:PDF(521.9KB)

Key Length Estimation of Pairing-Based Cryptosystems Using ηT Pairing over GF(3n)
Naoyuki SHINOHARA Takeshi SHIMOYAMA Takuya HAYASHI Tsuyoshi TAKAGI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/01/01
Vol. E97-A  No. 1  pp. 236-244
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Foundations
Keyword: 
pairing-based cryptosystemsdiscrete logarithm problemfinite fieldkey length
 Summary | Full Text:PDF(582.3KB)

Solving a 676-Bit Discrete Logarithm Problem in GF(36n)
Takuya HAYASHI Naoyuki SHINOHARA Lihua WANG Shin'ichiro MATSUO Masaaki SHIRASE Tsuyoshi TAKAGI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/01/01
Vol. E95-A  No. 1  pp. 204-212
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Mathematics
Keyword: 
function field sievediscrete logarithm problempairing-based cryptosystems
 Summary | Full Text:PDF(594.5KB)

Small Secret CRT-Exponent Attacks on Takagi's RSA
Naoyuki SHINOHARA Tetsuya IZU Noboru KUNIHIRO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/01/01
Vol. E94-A  No. 1  pp. 19-27
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Public Key Cryptography
Keyword: 
CRT-exponentlatticeLLLTakagi's RSA
 Summary | Full Text:PDF(485.9KB)

Inefficacious Conditions of the Frobenius Primality Test and Grantham's Problem
Naoyuki SHINOHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/11/01
Vol. E91-A  No. 11  pp. 3325-3334
Type of Manuscript:  PAPER
Category: Cryptography and Information Security
Keyword: 
primality testprimality provingpseudoprimeQFTfpspICF
 Summary | Full Text:PDF(193.9KB)