Koji Chida

50 papers A 1B 4C 5Misc 9Journal 25Unranked 6
YearRankTypeTitle / Venue / Authors
2025 J jnl
A Composition Theorem via
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Shota Saito, Koji Chida, Osamu Takaki
2025 C conf
Block Hijacking Attack: Impact Evaluation on Liquid Network and Design Insights for Blockchain-based Scaling Solutions.
ICBC
Kabuto Okajima, Shin'ichiro Matsuo, Koji Chida
2024 C conf
$k^{m}$-Anonymization Meets Differential Privacy Under Sampling.
ISITA
Masaya Kobayashi, Atsushi Fujioka, Koji Chida, Akira Nagai, Kan Yasuda
2024 Misc conf
A Study on Anonymization Through Participation in iPWS Cup 2023.
IWSEC
Kabuto Okajima, Koji Chida
2024 B conf
Experimental Evaluation for Risk Assessment of Privacy Preserving Synthetic Data.
MDAI
Koji Chida, Susumu Kakuta, Hiroyuki Itakura, Ichiro Ishihara, Kosuke Yoshioka, Hiroshi Takeuchi
2024 C conf
Pk-Anonymization Meets Differential Privacy.
PST
Masaya Kobayashi, Atsushi Fujioka, Koji Chida, Akira Nagai, Kan Yasuda
2023 A conf
Communication-Efficient Inner Product Private Join and Compute with Cardinality.
AsiaCCS
Koji Chida, Koki Hamada, Atsunori Ichikawa, Masanobu Kii, Junichi Tomida
2023 J jnl
Efficient decision tree training with new data structure for secure multi-party computation.
Proc. Priv. Enhancing Technol.
Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Koji Chida
2023 C conf
Extended k
PST
Masaya Kobayashi, Atsushi Fujioka, Koji Chida
2023 J jnl
Fast Large-Scale Honest-Majority MPC for Malicious Adversaries.
J. Cryptol.
Koji Chida, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Daniel Genkin, Yehuda Lindell, Ariel Nof
2023 J jnl
On Rényi Differential Privacy in Statistics-Based Synthetic Data Generation.
CoRR
Takayuki Miura, Toshiki Shibahara, Masanobu Kii, Atsunori Ichikawa, Juko Yamamoto, Koji Chida
2023 J jnl
On Rényi Differential Privacy in Statistics-based Synthetic Data Generation.
J. Inf. Process.
Takayuki Miura, Toshiki Shibahara, Masanobu Kii, Atsunori Ichikawa, Juko Yamamoto, Koji Chida
2022 J jnl
Private Intersection-Weighted-Sum.
IACR Cryptol. ePrint Arch.
Koji Chida, Koki Hamada, Atsunori Ichikawa, Masanobu Kii, Junichi Tomida
2021 J jnl
Efficient decision tree training with new data structure for secure multi-party computation.
CoRR
Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Koji Chida
2019 J jnl
An Efficient Secure Three-Party Sorting Protocol with an Honest Majority.
IACR Cryptol. ePrint Arch.
Koji Chida, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Naoto Kiribuchi, Benny Pinkas
2018 Misc conf
Efficient Bit-Decomposition and Modulus-Conversion Protocols with an Honest Majority.
ACISP
Ryo Kikuchi, Dai Ikarashi, Takahiro Matsuda, Koki Hamada, Koji Chida
2018 J jnl
Efficient Bit-Decomposition and Modulus-Conversion Protocols with an Honest Majority.
IACR Cryptol. ePrint Arch.
Ryo Kikuchi, Dai Ikarashi, Takahiro Matsuda, Koki Hamada, Koji Chida
2018 — conf
Fast Large-Scale Honest-Majority MPC for Malicious Adversaries.
CRYPTO (3)
Koji Chida, Daniel Genkin, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Yehuda Lindell, Ariel Nof
2018 J jnl
Fast Large-Scale Honest-Majority MPC for Malicious Adversaries.
IACR Cryptol. ePrint Arch.
Koji Chida, Daniel Genkin, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Yehuda Lindell, Ariel Nof
2018 — conf
High-Throughput Secure AES Computation.
WAHC@CCS
Koji Chida, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Benny Pinkas
2018 J jnl
Password-Based Authentication Protocol for Secret-Sharing-Based Multiparty Computation.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ryo Kikuchi, Koji Chida, Dai Ikarashi, Koki Hamada
2017 Misc ed.
Advances in Information and Computer Security - 12th International Workshop on Security, IWSEC 2017, Hiroshima, Japan, August 30 - September 1, 2017, Proceedings
IWSEC
Satoshi Obana, Koji Chida
2017 J jnl
Computational SS and conversion protocols in both active and passive settings.
IET Inf. Secur.
Ryo Kikuchi, Dai Ikarashi, Koji Chida, Koki Hamada, Wakaha Ogata
2017 — conf
Evaluation of the Anonymity and Utility of De-Identified Clinical Data Based on Japanese Anonymization Criteria.
MedInfo
Eizen Kimura, Satoshi Hasegawa, Koji Chida, Shoko Gamo, Satoshi Irino, Haku Ishida, Yukio Kurihara
2016 — conf
Evaluation of Secure Computation in a Distributed Healthcare Setting.
MIE
Eizen Kimura, Koki Hamada, Ryo Kikuchi, Koji Chida, Kazuya Okamoto, Shirou Manabe, Tomohiro Kuroda, Yasushi Matsumura, Toshihiro Takeda, Naoki Mihara
2015 J jnl
Adaptively and Unconditionally Secure Conversion Protocols between Ramp and Linear Secret Sharing.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ryo Kikuchi, Dai Ikarashi, Koki Hamada, Koji Chida
2015 B conf
Practical Password-Based Authentication Protocol for Secret Sharing Based Multiparty Computation.
CANS
Ryo Kikuchi, Koji Chida, Dai Ikarashi, Koki Hamada
2015 J jnl
Secret Sharing with Share-Conversion: Achieving Small Share-Size and Extendibility to Multiparty Computation.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ryo Kikuchi, Koji Chida, Dai Ikarashi, Wakaha Ogata, Koki Hamada, Katsumi Takahashi
2015 Misc conf
k-Anonymous Microdata Release via Post Randomisation Method.
IWSEC
Dai Ikarashi, Ryo Kikuchi, Koji Chida, Katsumi Takahashi
2015 J jnl
k-anonymous Microdata Release via Post Randomisation Method.
CoRR
Dai Ikarashi, Ryo Kikuchi, Koji Chida, Katsumi Takahashi
2014 J jnl
Actively Private and Correct MPC Scheme in t<n/2 from Passively Secure Schemes with Small Overhead.
IACR Cryptol. ePrint Arch.
Dai Ikarashi, Ryo Kikuchi, Koki Hamada, Koji Chida
2014 J jnl
Oblivious Radix Sort: An Efficient Sorting Algorithm for Practical Secure Multi-party Computation.
IACR Cryptol. ePrint Arch.
Koki Hamada, Dai Ikarashi, Koji Chida, Katsumi Takahashi
2013 Misc conf
Secret Sharing Schemes with Conversion Protocol to Achieve Short Share-Size and Extendibility to Multiparty Computation.
ACISP
Ryo Kikuchi, Koji Chida, Dai Ikarashi, Koki Hamada, Katsumi Takahashi
2012 Misc conf
Practically Efficient Multi-party Sorting Protocols from Comparison Sort Algorithms.
ICISC
Koki Hamada, Ryo Kikuchi, Dai Ikarashi, Koji Chida, Katsumi Takahashi
2010 — conf
Tag-Based Secure Set-Intersection Protocol and Its Application to Privacy-Enhancing Biometrics.
NBiS
Koji Chida, Dai Ikarashi, Katsumi Takahashi
2009 J jnl
Multiparty Computation from El Gamal/Paillier Conversion.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Koji Chida, Hiroaki Kikuchi, Keiichi Hirota, Gembu Morohashi
2008 J jnl
Batch Processing for Proofs of Partial Knowledge and Its Applications.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Koji Chida, Go Yamamoto
2008 Misc conf
Privacy Preserving Computations without Public Key Cryptographic Operation.
IWSEC
Koji Chida, Katsumi Takahashi
2008 J jnl
Secure Multiparty Computation for Comparator Networks.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Gembu Morohashi, Koji Chida, Keiichi Hirota, Hiroaki Kikuchi
2007 B conf
Batch Processing of Interactive Proofs.
CT-RSA
Koji Chida, Go Yamamoto
2007 B conf
Efficient Multiparty Computation for Comparator Networks.
ARES
Koji Chida, Hiroaki Kikuchi, Gembu Morohashi, Keiichi Hirota
2007 J jnl
Non-optimistic Secure Circuit Evaluation Based on ElGamal Encryption and Its Applications.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Koji Chida, Go Yamamoto, Koutarou Suzuki, Shigenori Uchiyama, Noburou Taniguchi, Osamu Shionoiri, Atsushi Kanai
2007 Misc conf
Secure Anonymous Communications with Practical Anonymity Revocation Scheme.
IWSEC
Koji Chida, Osamu Shionoiri, Atsushi Kanai
2006 J jnl
Conversion Schemes for Unlinkable Signatures That Include Revocable Unlinkability.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Koji Chida
2005 — conf
DECIDE: a scheme for decentralized identity escrow.
Digital Identity Management
Noburou Taniguchi, Koji Chida, Osamu Shionoiri, Atsushi Kanai
2005 Misc conf
Efficient, Non-optimistic Secure Circuit Evaluation Based on the ElGamal Encryption.
WISA
Go Yamamoto, Koji Chida, Anderson C. A. Nascimento, Koutarou Suzuki, Shigenori Uchiyama
2005 J jnl
Flexible-Routing Anonymous Networks Using Optimal Length of Ciphertext.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Koji Chida, Masayuki Abe
2004 J jnl
An Auction Protocol Preserving Privacy of Losing Bids with a Secure Value Comparison Scheme.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Koji Chida, Kunio Kobayashi, Hikaru Morita
2002 J jnl
A New Factoring Method of Integers
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Koji Chida, Shigenori Uchiyama, Taiichi Saito
2001 C conf
Efficient Sealed-Bid Auctions for Massive Numbers of Bidders with Lump Comparison.
ISC
Koji Chida, Kunio Kobayashi, Hikaru Morita