Takuya HAYASHI


Privacy-Preserving Logistic Regression with Distributed Data Sources via Homomorphic Encryption
Yoshinori AONO Takuya HAYASHI Le Trieu PHONG Lihua WANG 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/08/01
Vol. E99-D  No. 8  pp. 2079-2089
Type of Manuscript:  Special Section PAPER (Special Section on Security, Privacy and Anonymity of Internet of Things)
Category: 
Keyword: 
logistic regressiondistributed data sourceshomomorphic encryptionPaillierLWEring-LWEoutsourced computationaccuracyF-score
 Summary | Full Text:PDF(494KB)

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)