Ryuichi Sakai

16 papers C 6Misc 1Journal 9
YearRankTypeTitle / Venue / Authors
2026 J jnl
Acceleration of ID-NIKS Based on Discrete Logarithm Problem by Parallelization of
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Hayato Inoue, Mizuki Miki, Ryuichi Sakai, Yasuyuki Murakami
2024 J jnl
High-Density Knapsack Cryptosystem Using Shifted-Odd and Super-Increasing Sequence.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Minami Sato, Sosuke Minamoto, Ryuichi Sakai, Yasuyuki Murakami
2022 C conf
High-Density Knapsack Cryptosystem using Shifted-Odd and Super-Increasing Sequence.
ISITA
Minami Sato, Sosuke Minamoto, Ryuichi Sakai, Yasuyuki Murakami
2018 C conf
Equivalent Secret Key Attack against Knapsack PKC based on Subset Sum Decision Problem.
ISITA
Ryuichi Sakai, Yasuyuki Murakami
2018 C conf
Security of Knapsack Cryptosystem Using Subset-Sum Decision Problem against Alternative-Solution Attack.
ISITA
Yasuyuki Murakami, Ryuichi Sakai
2014 C conf
New method for factoring two RSA moduli with implicit hint.
ISITA
Ryuichi Sakai, Masao Kasahara
2012 C conf
Security analysis of shifted odd knapsack public key encryption scheme.
ISITA
Ryuichi Sakai, Yasuyuki Murakami, Masao Kasahara
2009 C conf
Cryptanalysis on 2 Dimensional Subset-sum Public Key Cryptosystem.
ICIS
Tomohiro Shintani, Ryuichi Sakai
2008 Misc conf
A Fuzzy ID-Based Encryption Efficient When Error Rate Is Low.
INDOCRYPT
Jun Furukawa, Nuttapong Attrapadung, Ryuichi Sakai, Goichiro Hanaoka
2007 J jnl
Identity-Based Broadcast Encryption.
IACR Cryptol. ePrint Arch.
Ryuichi Sakai, Jun Furukawa
2005 J jnl
A Construction of Public-Key Cryptosystem Based on Singular Simultaneous Equations.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Masao Kasahara, Ryuichi Sakai
2005 J jnl
Meta Ring Signature.
IACR Cryptol. ePrint Arch.
Hiroyuki Okazaki, Ryuichi Sakai, Masao Kasahara
2004 J jnl
A Construction of Public Key Cryptosystem for Realizing Ciphertext of Size 100 Bit and Digital Signature Scheme.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Masao Kasahara, Ryuichi Sakai
2003 J jnl
A Construction of 100 bit Public-Key Cryptosystem and Digital Signature Scheme.
IACR Cryptol. ePrint Arch.
Masao Kasahara, Ryuichi Sakai
2003 J jnl
ID based Cryptosystems with Pairing on Elliptic Curve.
IACR Cryptol. ePrint Arch.
Ryuichi Sakai, Masao Kasahara
2002 J jnl
A New Traitor Tracing.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Shigeo Mitsunari, Ryuichi Sakai, Masao Kasahara