Hiroki Shizuya

47 papers A* 5A 1B 2C 2Misc 7Journal 23Unranked 7
YearRankTypeTitle / Venue / Authors
2022 J jnl
On the Higher bit Version of Approximate Inhomogeneous Short Integer Solution Problem.
IACR Cryptol. ePrint Arch.
Anaëlle Le Dévéhat, Hiroki Shizuya, Shingo Hasegawa
2022 Misc conf
Preimage Sampling in the Higher-bit Approximate Setting with a Non-spherical Gaussian Sampler.
ICISC
Anaëlle Le Dévéhat, Shingo Hasegawa, Hiroki Shizuya
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
2021 B conf
On the Higher-Bit Version of Approximate Inhomogeneous Short Integer Solution Problem.
CANS
Anaëlle Le Dévéhat, Hiroki Shizuya, Shingo Hasegawa
2021 J jnl
Public-Key Projective Arithmetic Functional Encryption.
Int. J. Netw. Comput.
Shingo Hasegawa, Masashi Hisai, Hiroki Shizuya
2020 — conf
How to Implement a Non-uniform or Non-closed Shuffle.
TPNC
Takahiro Saito, Daiki Miyahara, Yuta Abe, Takaaki Mizuki, Hiroki Shizuya
2020 — conf
Public-key Projective Arithmetic Functional Encryption.
CANDAR
Shingo Hasegawa, Masashi Hisai, Hiroki Shizuya
2017 J jnl
Computational Model of Card-Based Cryptographic Protocols and Its Applications.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Takaaki Mizuki, Hiroki Shizuya
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 formalization of card-based cryptographic protocols via abstract machine.
Int. J. Inf. Sec.
Takaaki Mizuki, Hiroki Shizuya
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
Password-protected secret-sharing schemes without random oracles.
ISITA
Shingo Hasegawa, Shuji Isobe, Jun-ya Iwazaki, Eisuke Koizumi, Hiroki Shizuya
2014 Misc conf
Practical Card-Based Cryptography.
FUN
Takaaki Mizuki, 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
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
2005 J jnl
The Computational Difficulty of Solving Cryptographic Primitive Problems Related to the Discrete Logarithm Problem.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Chisato Konoma, Masahiro Mambo, Hiroki Shizuya
2003 J jnl
A Note on the Relationships among Certified Discrete Log Cryptosystems.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Eikoh Chida, Toshiya Itoh, Hiroki Shizuya
2003 J jnl
Characterization of optimal key set protocols.
Discret. Appl. Math.
Takaaki Mizuki, Hiroki Shizuya, Takao Nishizeki
2003 J jnl
On the Security of Girault Key Agreement Protocols against Active Attacks.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Soohyun Oh, Masahiro Mambo, Hiroki Shizuya, Dongho Won
2003 J jnl
On the Strength of the Strong RSA Assumption.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Shintaro Itagaki, Masahiro Mambo, Hiroki Shizuya
2002 J jnl
A complete characterization of a family of key exchange protocols.
Int. J. Inf. Sec.
Takaaki Mizuki, Hiroki Shizuya, Takao Nishizeki
2002 Misc conf
Spending Offline Divisible Coins with Combining Capability.
INDOCRYPT
Eikoh Chida, Yosuke Kasai, Masahiro Mambo, Hiroki Shizuya
2001 Misc conf
Evaluation of Tamper-Resistant Software Deviating from Structured Programming Rules.
ACISP
Hideaki Goto, Masahiro Mambo, Hiroki Shizuya, Yasuyoshi Watanabe
2000 — conf
An Approach to the Objective and Quantitative Evaluation of Tamper-Resistant Software.
ISW
Hideaki Goto, Masahiro Mambo, Kenjiro Matsumura, Hiroki Shizuya
2000 — conf
Characterization of Optimal Key Set Protocols.
IFIP TCS
Takaaki Mizuki, Hiroki Shizuya, Takao Nishizeki
1999 A* conf
Dealing Necessary and Sufficient Numbers of Cards for Sharing a One-Bit Secret Key.
EUROCRYPT
Takaaki Mizuki, Hiroki Shizuya, Takao Nishizeki
1999 J jnl
Divertible and Subliminal-Free Zero-Knowledge Proofs for Languages.
J. Cryptol.
Mike Burmester, Yvo Desmedt, Toshiya Itoh, Kouichi Sakurai, Hiroki Shizuya
1998 — conf
A Note on the Complexity of Breaking Okamoto-Tanaka ID-Based Key Exchange Scheme.
Public Key Cryptography
Masahiro Mambo, Hiroki Shizuya
1998 J jnl
A Structural Comparison of the Computational Difficulty of Breaking Discrete Log Cryptosystems.
J. Cryptol.
Kouichi Sakurai, Hiroki Shizuya
1998 Misc conf
Eulerian Secret Key Exchange.
COCOON
Takaaki Mizuki, Hiroki Shizuya, Takao Nishizeki
1997 J jnl
A Language-Dependent Cryptographic Primitive.
J. Cryptol.
Toshiya Itoh, Yuji Ohta, Hiroki Shizuya
1996 — conf
A Progress Report on Subliminal-Free Channels.
Information Hiding
Mike Burmester, Yvo Desmedt, Toshiya Itoh, Kouichi Sakurai, Hiroki Shizuya, Moti Yung
1995 A* conf
Relationships Among the Computational Powers of Breaking Discrete Log Cryptosystems.
EUROCRYPT
Kouichi Sakurai, Hiroki Shizuya
1994 A* conf
Language Dependent Secure Bit Commitment.
CRYPTO
Toshiya Itoh, Yuji Ohta, Hiroki Shizuya
1992 A* conf
How Intractable Is the Discrete Logarithm for a General Finite Group?
EUROCRYPT
Tatsuaki Okamoto, Kouichi Sakurai, Hiroki Shizuya
1991 A conf
Any Language in IP Has a Divertable ZKIP.
ASIACRYPT
Toshiya Itoh, Kouichi Sakurai, Hiroki Shizuya
1991 A* conf
On the Complexity of Hyperelliptic Discrete Logarithm Problem.
EUROCRYPT
Hiroki Shizuya, Toshiya Itoh, Kouichi Sakurai
1990 — conf
Demonstrating Possession without Revealing Factors and its Application.
AUSCRYPT
Hiroki Shizuya, Kenji Koyama, Toshiya Itoh