Shuji Isobe

31 papers A* 1B 3C 4Misc 2Journal 17Unranked 4
YearRankTypeTitle / Venue / Authors
2026 J jnl
Decentralized Federated Learning Using Blockchain with Token Allocation Based on Contribution of Model Updates.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Koyo Murakata, Minoru Kuribayashi, Masao Sakai, Shuji Isobe, Eisuke Koizumi
2025 — conf
Ownership Verification of Dnn Models Using White-Box Adversarial Attacks with Specified Probability Manipulation.
EUSIPCO
Teruki Sano, Minoru Kuribayashi, Masao Sakai, Shuji Isobe, Eisuke Koizumi
2025 — conf
Robust Ownership Verification of DNN Models Against JPEG Compression via Probability-Controlled Adversarial Attacks.
APSIPA
Teruki Sano, Minoru Kuribayashi, Masao Sakai, Shuji Isobe, Eisuke Koizumi, Zhang Zhang
2023 J jnl
A construction of encryption protocols over some semidirect products.
J. Math. Cryptol.
Shuji Isobe, Eisuke Koizumi
2021 J jnl
On a Relation between Knowledge-of-Exponent Assumptions and the DLog vs. CDH Question.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Firas Kraiem, Shuji Isobe, Eisuke Koizumi, Hiroki Shizuya
2018 — conf
A Construction of Cramer-Shoup Like Encryption Protocols Based on the Anshel-Anshel-Goldfeld Key Exchange Protocol.
CANDAR Workshops
Shuji Isobe, Jun-ya Iwazaki, Eisuke Koizumi, Atsushi Suda
2017 — conf
A Method for Constructing an Autonomous Decentralized P2P Storage with High Confidentiality and Reliability.
CANDAR
Masayuki Fukumitsu, Shingo Hasegawa, Shuji Isobe, Jun-ya Iwazaki, Eisuke Koizumi, Masao Sakai
2017 J jnl
Autoreducibility and Completeness for Partial Multivalued Functions.
IEICE Trans. Inf. Syst.
Shuji Isobe, Eisuke Koizumi
2016 C conf
A construction of attribute-based aggregate signatures.
ISITA
Shingo Hasegawa, Shuji Isobe, Eisuke Koizumi, Hiroki Shizuya, Ryo Takahashi
2015 J jnl
A Strengthened Security Notion for Password-Protected Secret Sharing Schemes.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Shingo Hasegawa, Shuji Isobe, Jun-ya Iwazaki, Eisuke Koizumi, Hiroki Shizuya
2014 J jnl
A Lossy Identification Scheme Using the Subgroup Decision Assumption.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Shingo Hasegawa, Shuji Isobe
2014 C conf
Lossy identification schemes from decisional RSA.
ISITA
Shingo Hasegawa, Shuji Isobe
2014 J jnl
On the Complexity of Computing Discrete Logarithms over Algebraic Tori.
IEICE Trans. Inf. Syst.
Shuji Isobe, Eisuke Koizumi, Yuji Nishigaki, Hiroki Shizuya
2014 Misc conf
On the Impossibility of Proving Security of Strong-RSA Signatures via the RSA Assumption.
ACISP
Masayuki Fukumitsu, Shingo Hasegawa, Shuji Isobe, Hiroki Shizuya
2014 C conf
On the security notions of signcryption.
ISITA
Shingo Hasegawa, Shuji Isobe
2014 C conf
Password-protected secret-sharing schemes without random oracles.
ISITA
Shingo Hasegawa, Shuji Isobe, Jun-ya Iwazaki, Eisuke Koizumi, Hiroki Shizuya
2014 J jnl
The RSA Group Is Adaptive Pseudo-Free under the RSA Assumption.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Masayuki Fukumitsu, Shingo Hasegawa, Shuji Isobe, Hiroki Shizuya
2013 J jnl
On the Length-Decreasing Self-Reducibility and the Many-One-Like Reducibilities for Partial Multivalued Functions.
IEICE Trans. Inf. Syst.
Ji-Won Huh, Shuji Isobe, Eisuke Koizumi, Hiroki Shizuya
2013 Misc conf
Toward Separating the Strong Adaptive Pseudo-freeness from the Strong RSA Assumption.
ACISP
Masayuki Fukumitsu, Shingo Hasegawa, Shuji Isobe, Eisuke Koizumi, Hiroki Shizuya
2009 B conf
On the Complexity of Computing Discrete Logarithms over Algebraic Tori.
CANS
Shuji Isobe, Eisuke Koizumi, Yuji Nishigaki, Hiroki Shizuya
2009 J jnl
On the pseudo-freeness and the CDH assumption.
Int. J. Inf. Sec.
Shingo Hasegawa, Shuji Isobe, Hiroki Shizuya, Katsuhiro Tashiro
2008 J jnl
Making Cryptographic Primitives Harder.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Shingo Hasegawa, Hiroyuki Hatanaka, Shuji Isobe, Eisuke Koizumi, Hiroki Shizuya
2008 J jnl
NPMV-Complete Functions That Compute Discrete Logarithms and Integer Factorization.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Shingo Hasegawa, Shuji Isobe, Hiroki Shizuya
2007 J jnl
Total Colorings Of Degenerate Graphs.
Comb.
Shuji Isobe, Xiao Zhou, Takao Nishizeki
2007 J jnl
Toward Separating Integer Factoring from Discrete Logarithm mod
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Shuji Isobe, Wataru Kumagai, Masahiro Mambo, Hiroki Shizuya
2005 J jnl
On the Polynomial Time Computability of Abstract Ray-Tracing Problems.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Shuji Isobe, Tetsuo Kuriyama, Masahiro Mambo, Hiroki Shizuya
2004 J jnl
Cost Total Colorings of Trees.
IEICE Trans. Inf. Syst.
Shuji Isobe, Xiao Zhou, Takao Nishizeki
2001 A* conf
Total Colorings of Degenerated Graphs.
ICALP
Shuji Isobe, Xiao Zhou, Takao Nishizeki
1999 B conf
A Linear Algorithm for Finding Total Colorings of Partial k-Trees.
ISAAC
Shuji Isobe, Xiao Zhou, Takao Nishizeki
1999 J jnl
A Polynomial-Time Algorithm for Finding Total Colorings of Partial k-Trees.
Int. J. Found. Comput. Sci.
Shuji Isobe, Xiao Zhou, Takao Nishizeki
1998 B conf
A Polynomial-Time Algorithm for Finding Total Colorings of Partial k-Trees.
WG
Shuji Isobe, Xiao Zhou, Takao Nishizeki