Koji Nuida

According to our database, Koji Nuida authored at least 97 papers between 2006 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2024

On Extension of Evaluation Algorithms in Keyed-Homomorphic Encryption.

Hirotomo Shinoki, Koji Nuida

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2024

Correlated Randomness Reduction in Domain-Restricted Secure Two-Party Computation.

Keitaro Hiwatashi, Koji Nuida

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2024

Efficient and Generic Methods to Achieve Active Security in Private Information Retrieval and More Advanced Database Search.

Reo Eriguchi, Kaoru Kurosawa, Koji Nuida

IACR Cryptol. ePrint Arch., 2024

2023

Private simultaneous messages based on quadratic residues.

Kazumasa Shinagawa, Reo Eriguchi, Shohei Satake, Koji Nuida

Des. Codes Cryptogr., December, 2023

Efficient Construction of CGL Hash Function Using Legendre Curves.

Yuji Hashimoto, Koji Nuida

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., September, 2023

Efficient Supersingularity Testing of Elliptic Curves Using Legendre Curves.

Yuji Hashimoto, Koji Nuida

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., September, 2023

Multiplicative and verifiably multiplicative secret sharing for multipartite adversary structures.

Reo Eriguchi, Noboru Kunihiro, Koji Nuida

Des. Codes Cryptogr., May, 2023

Short Lattice Signature Scheme with Tighter Reduction under Ring-SIS Assumption.

Kaisei Kajita, Go Ohtake, Kazuto Ogawa, Koji Nuida, Tsuyoshi Takagi

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., March, 2023

Linear Algebraic Approach to Strongly Secure Ramp Secret Sharing for General Access Structures with Application to Symmetric PIR.

Reo Eriguchi, Noboru Kunihiro, Koji Nuida

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., March, 2023

Explicit Lower Bounds for Communication Complexity of PSM for Concrete Functions.

Kazumasa Shinagawa, Koji Nuida

IACR Cryptol. ePrint Arch., 2023

On Weighted-Sum Orthogonal Latin Squares and Secret Sharing.

Koji Nuida, Tomoko Adachi

IACR Cryptol. ePrint Arch., 2023

Efficient Card-Based Millionaires' Protocols via Non-Binary Input Encoding.

Koji Nuida

IACR Cryptol. ePrint Arch., 2023

New Generic Constructions of Error-Correcting PIR and Efficient Instantiations.

Reo Eriguchi, Kaoru Kurosawa, Koji Nuida

IACR Cryptol. ePrint Arch., 2023

Uniform Cyclic Group Factorizations of Finite Groups.

Kazuki Kanai, Kengo Miyamoto, Koji Nuida, Kazumasa Shinagawa

CoRR, 2023

Threshold Fully Homomorphic Encryption Over the Torus.

Yukimasa Sugizaki, Hikaru Tsuchida, Takuya Hayashi, Koji Nuida, Akira Nakashima, Toshiyuki Isshiki, Kengo Mori

Proceedings of the Computer Security - ESORICS 2023, 2023

Exponential Correlated Randomness Is Necessary in Communication-Optimal Perfectly Secure Two-Party Computation.

Keitaro Hiwatashi, Koji Nuida

Proceedings of the 4th Conference on Information-Theoretic Cryptography, 2023

Explicit and Nearly Tight Lower Bound for 2-Party Perfectly Secure FSS.

Keitaro Hiwatashi, Koji Nuida

Proceedings of the Applied Cryptography and Network Security, 2023

2022

Efficiency and Accuracy Improvements of Secure Floating-Point Addition over Secret Sharing.

Kota Sasaki, Koji Nuida

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2022

An Efficient Secure Division Protocol Using Approximate Multi-Bit Product and New Constant-Round Building Blocks.

Keitaro Hiwatashi, Satsuya Ohata, Koji Nuida

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2022

Tight Security of Twin-DH Hashed ElGamal KEM in Multi-User Setting.

Yuji Hashimoto, Koji Nuida, Goichiro Hanaoka

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2022

Single-shuffle Full-open Card-based Protocols Imply Private Simultaneous Messages Protocols.

Kazumasa Shinagawa, Koji Nuida

IACR Cryptol. ePrint Arch., 2022

On the Optimal Communication Complexity of Error-Correcting Multi-Server PIR.

Reo Eriguchi, Kaoru Kurosawa, Koji Nuida

IACR Cryptol. ePrint Arch., 2022

Multi-Server PIR with Full Error Detection and Limited Error Correction.

Reo Eriguchi, Kaoru Kurosawa, Koji Nuida

IACR Cryptol. ePrint Arch., 2022

Efficient Noise Generation Protocols for Differentially Private Multiparty Computation.

Reo Eriguchi, Atsunori Ichikawa, Noboru Kunihiro, Koji Nuida

IACR Cryptol. ePrint Arch., 2022

On Compression Functions over Small Groups with Applications to Cryptography.

Koji Nuida

CoRR, 2022

2021

How to Handle Invalid Queries for Malicious-Private Protocols Based on Homomorphic Encryption.

Koji Nuida

IACR Cryptol. ePrint Arch., 2021

Chosen Ciphertext Secure Keyed Two-Level Homomorphic Encryption.

Yusaku Maeda, Koji Nuida

IACR Cryptol. ePrint Arch., 2021

Computational Irrelevancy: Bridging the Gap between Pseudo- and Real Randomness in MPC Protocols.

Nariyasu Heseri, Koji Nuida

IACR Cryptol. ePrint Arch., 2021

Homomorphic Secret Sharing for Multipartite and General Adversary Structures Supporting Parallel Evaluation of Low-degree Polynomials.

Reo Eriguchi, Koji Nuida

IACR Cryptol. ePrint Arch., 2021

A single shuffle is enough for secure card-based computation of any Boolean circuit.

Kazumasa Shinagawa, Koji Nuida

Discret. Appl. Math., 2021

An Improvement of a Key Exchange Protocol Relying on Polynomial Maps.

Keita Suzuki, Koji Nuida

CoRR, 2021

Halt Properties and Complexity Evaluations for Optimal DeepLLL Algorithm Families.

Takuto Odagawa, Koji Nuida

CoRR, 2021

Cryptographic Pseudorandom Generators Can Make Cryptosystems Problematic.

Koji Nuida

Proceedings of the Public-Key Cryptography - PKC 2021, 2021

Efficient Fully Anonymous Public-Key Trace and Revoke with Adaptive IND-CCA Security.

Mriganka Mandal, Ramprasad Sarkar, Junbeom Hur, Koji Nuida

Proceedings of the Information Security Practice and Experience: 16th International Conference, 2021

Efficient Noise Generation to Achieve Differential Privacy with Applications to Secure Multiparty Computation.

Reo Eriguchi, Atsunori Ichikawa, Noboru Kunihiro, Koji Nuida

Proceedings of the Financial Cryptography and Data Security, 2021

Non-interactive Secure Multiparty Computation for Symmetric Functions, Revisited: More Efficient Constructions and Extensions.

Reo Eriguchi, Kazuma Ohara, Shota Yamada, Koji Nuida

Proceedings of the Advances in Cryptology - CRYPTO 2021, 2021

Improved Supersingularity Testing of Elliptic Curves Using Legendre Form.

Yuji Hashimoto, Koji Nuida

Proceedings of the Computer Algebra in Scientific Computing - 23rd International Workshop, 2021

Accelerating Secure (2+1)-Party Computation by Insecure but Efficient Building Blocks.

Keitaro Hiwatashi, Ken Ogura, Satsuya Ohata, Koji Nuida

Proceedings of the ASIA CCS '21: ACM Asia Conference on Computer and Communications Security, 2021

2020

Constant-Round Client-Aided Two-Server Secure Comparison Protocol and Its Applications.

Hiraku Morita, Nuttapong Attrapadung, Tadanori Teruya, Satsuya Ohata, Koji Nuida, Goichiro Hanaoka

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2020

An Elementary Linear-Algebraic Proof without Heavy Computation for the Group Law on Elliptic Curves.

Koji Nuida

CoRR, 2020

Short Lattice Signatures in the Standard Model with Efficient Tag Generation.

Kaisei Kajita, Kazuto Ogawa, Koji Nuida, Tsuyoshi Takagi

Proceedings of the Provable and Practical Security - 14th International Conference, ProvSec 2020, Singapore, November 29, 2020

Identity-Based Outsider Anonymous Broadcast Encryption with Simultaneous Individual Messaging.

Mriganka Mandal, Koji Nuida

Proceedings of the Network and System Security - 14th International Conference, 2020

A Linear Algebraic Approach to Strongly Secure Ramp Secret Sharing for General Access Structures.

Reo Eriguchi, Noboru Kunihiro, Koji Nuida

Proceedings of the International Symposium on Information Theory and Its Applications, 2020

Communication-Efficient (Client-Aided) Secure Two-Party Protocols and Its Application.

Satsuya Ohata, Koji Nuida

Proceedings of the Financial Cryptography and Data Security, 2020

2019

Secure Wavelet Matrix: Alphabet-Friendly Privacy-Preserving String Search for Bioinformatics.

Hiroki Sudo, Masanobu Jimbo, Koji Nuida, Kana Shimizu

IEEE ACM Trans. Comput. Biol. Bioinform., 2019

Polynomial expressions of p-ary auction functions.

Shizuo Kaji, Toshiaki Maeno, Koji Nuida, Yasuhide Numata

J. Math. Cryptol., 2019

Elliptic Curve Method Using Complex Multiplication Method.

Yusuke Aikawa, Koji Nuida, Masaaki Shirase

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2019

An Efficient Private Evaluation of a Decision Graph.

Hiroki Sudo, Koji Nuida, Kana Shimizu

IACR Cryptol. ePrint Arch., 2019

A Single Shuffle Is Enough for Secure Card-Based Computation of Any Circuit.

Kazumasa Shinagawa, Koji Nuida

IACR Cryptol. ePrint Arch., 2019

Arbitrary Univariate Function Evaluation and Re-Encryption Protocols over Lifted-ElGamal Type Ciphertexts.

Koji Nuida, Satsuya Ohata, Shigeo Mitsunari, Nuttapong Attrapadung

IACR Cryptol. ePrint Arch., 2019

Towards High-Throughput Secure MPC over the Internet: Communication-Efficient Two-Party Protocols and Its Application.

Satsuya Ohata, Koji Nuida

CoRR, 2019

Privacy Preservation for Versatile Pay-TV Services.

Kazuto Ogawa, Koji Nuida

Proceedings of the HCI for Cybersecurity, Privacy and Trust, 2019

2018

Secure Grouping Protocol Using a Deck of Cards.

Yuji Hashimoto, Kazumasa Shinagawa, Koji Nuida, Masaki Inamura, Goichiro Hanaoka

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2018

Toward Finite-Runtime Card-Based Protocol for Generating a Hidden Random Permutation without Fixed Points.

Yuji Hashimoto, Koji Nuida, Kazumasa Shinagawa, Masaki Inamura, Goichiro Hanaoka

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2018

Keeping or Losing Tiny-Error Correctness of Cryptosystems Implemented by Secure Pseudorandom Generators.

Koji Nuida

IACR Cryptol. ePrint Arch., 2018

Chosen ciphertext secure keyed-homomorphic public-key cryptosystems.

Keita Emura, Goichiro Hanaoka, Koji Nuida, Go Ohtake, Takahiro Matsuda, Shota Yamada

Des. Codes Cryptogr., 2018

Secure Division Protocol and Applications to Privacy-preserving Chi-squared Tests.

Hiraku Morita, Nuttapong Attrapadung, Satsuya Ohata, Koji Nuida, Shota Yamada, Kana Shimizu, Goichiro Hanaoka, Kiyoshi Asai

Proceedings of the International Symposium on Information Theory and Its Applications, 2018

Tree-based Secure Comparison of Secret Shared Data.

Hiraku Morita, Nuttapong Attrapadung, Satsuya Ohata, Shota Yamada, Koji Nuida, Goichiro Hanaoka

Proceedings of the International Symposium on Information Theory and Its Applications, 2018

Constant-Round Client-Aided Secure Comparison Protocol.

Hiraku Morita, Nuttapong Attrapadung, Tadanori Teruya, Satsuya Ohata, Koji Nuida, Goichiro Hanaoka

Proceedings of the Computer Security, 2018

2017

Card-Based Protocols Using Regular Polygon Cards.

Kazumasa Shinagawa, Takaaki Mizuki, Jacob C. N. Schuldt, Koji Nuida, Naoki Kanayama, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017

A Public-key Encryption Scheme Based on Non-linear Indeterminate Equations (Giophantus).

Koichiro Akiyama, Yasuhiro Goto, Shinya Okumura, Tsuyoshi Takagi, Koji Nuida, Goichiro Hanaoka, Hideo Shimizu, Yasuhiko Ikematsu

IACR Cryptol. ePrint Arch., 2017

A Public-Key Encryption Scheme Based on Non-linear Indeterminate Equations.

Koichiro Akiyama, Yasuhiro Goto, Shinya Okumura, Tsuyoshi Takagi, Koji Nuida, Goichiro Hanaoka

Proceedings of the Selected Areas in Cryptography - SAC 2017, 2017

Correction of a Secure Comparison Protocol for Encrypted Integers in IEEE WIFS 2012 (Short Paper).

Baptiste Vinh Mau, Koji Nuida

Proceedings of the Advances in Information and Computer Security, 2017

2016

Intrinsic reflections in Coxeter systems.

Bernhard Mühlherr, Koji Nuida

J. Comb. Theory, Ser. A, 2016

Secure Computation Protocols Using Polarizing Cards.

Kazumasa Shinagawa, Takaaki Mizuki, Jacob C. N. Schuldt, Koji Nuida, Naoki Kanayama, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2016

Efficient privacy-preserving string search and an application in genomics.

Kana Shimizu, Koji Nuida, Gunnar Rätsch

Bioinform., 2016

Committed AND protocol using three cards with more handy shuffle.

Kazumasa Shinagawa, Koji Nuida, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto

Proceedings of the 2016 International Symposium on Information Theory and Its Applications, 2016

Size-Hiding Computation for Multiple Parties.

Kazumasa Shinagawa, Koji Nuida, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto

Proceedings of the Advances in Cryptology - ASIACRYPT 2016, 2016

2015

Privacy-preserving search for chemical compound databases.

Kana Shimizu, Koji Nuida, Hiromi Arai, Shigeo Mitsunari, Nuttapong Attrapadung, Michiaki Hamada, Koji Tsuda, Takatsugu Hirokawa, Jun Sakuma, Goichiro Hanaoka, Kiyoshi Asai

BMC Bioinform., December, 2015

A Mathematical Problem for Security Analysis of Hash Functions and Pseudorandom Generators.

Koji Nuida, Takuro Abe, Shizuo Kaji, Toshiaki Maeno, Yasuhide Numata

Int. J. Found. Comput. Sci., 2015

Polynomial Expressions of Carries in p-ary Arithmetics.

Shizuo Kaji, Toshiaki Maeno, Koji Nuida, Yasuhide Numata

CoRR, 2015

Multi-party Computation with Small Shuffle Complexity Using Regular Polygon Cards.

Kazumasa Shinagawa, Takaaki Mizuki, Jacob C. N. Schuldt, Koji Nuida, Naoki Kanayama, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto

Proceedings of the Provable Security, 2015

On Limitations and Alternatives of Privacy-Preserving Cryptographic Protocols for Genomic Data.

Tadanori Teruya, Koji Nuida, Kana Shimizu, Goichiro Hanaoka

Proceedings of the Advances in Information and Computer Security, 2015

Secure Multi-Party Computation Using Polarizing Cards.

Kazumasa Shinagawa, Takaaki Mizuki, Jacob C. N. Schuldt, Koji Nuida, Naoki Kanayama, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto

Proceedings of the Advances in Information and Computer Security, 2015

2014

(Batch) Fully Homomorphic Encryption over Integers for Non-Binary Message Spaces.

Koji Nuida, Kaoru Kurosawa

IACR Cryptol. ePrint Arch., 2014

A Simple and Improved Algorithm for Integer Factorization with Implicit Hints.

Koji Nuida, Naoto Itakura, Kaoru Kurosawa

IACR Cryptol. ePrint Arch., 2014

Tree-Structured Composition of Homomorphic Encryption: How to Weaken Underlying Assumptions.

Koji Nuida, Goichiro Hanaoka, Takahiro Matsuda

IACR Cryptol. ePrint Arch., 2014

A Simple Framework for Noise-Free Construction of Fully Homomorphic Encryption from a Special Class of Non-Commutative Groups.

Koji Nuida

IACR Cryptol. ePrint Arch., 2014

Chosen Ciphertext Security on Hard Membership Decision Groups: The Case of Semi-smooth Subgroups of Quadratic Residues.

Takashi Yamakawa, Shota Yamada, Koji Nuida, Goichiro Hanaoka, Noboru Kunihiro

Proceedings of the Security and Cryptography for Networks - 9th International Conference, 2014

How to Use Pseudorandom Generators in Unconditional Security Settings.

Koji Nuida

Proceedings of the Provable Security - 8th International Conference, 2014

2013

On the Security of Pseudorandomized Information-Theoretically Secure Schemes.

Koji Nuida, Goichiro Hanaoka

IEEE Trans. Inf. Theory, 2013

Chosen Ciphertext Secure Keyed-Homomorphic Public-Key Encryption.

Keita Emura, Goichiro Hanaoka, Koji Nuida, Go Ohtake, Takahiro Matsuda, Shota Yamada

IACR Cryptol. ePrint Arch., 2013

2012

Short collusion-secure fingerprint codes against three pirates.

Koji Nuida

Int. J. Inf. Sec., 2012

On pseudorandomization of information-theoretically secure schemes without hardness assumptions.

Koji Nuida

IACR Cryptol. ePrint Arch., 2012

2010

Pattern Occurrence in the Dyadic Expansion of Square Root of Two and an Analysis of Pseudorandom Number Generators.

Koji Nuida

Integers, 2010

A characterization of signed graphs with generalized perfect elimination orderings.

Koji Nuida

Discret. Math., 2010

2009

An Efficient 2-Secure and Short Random Fingerprint Code and Its Security Evaluation.

Koji Nuida, Satoshi Fujitsu, Manabu Hagiwara, Hideki Imai, Takashi Kitagawa, Kazuto Ogawa, Hajime Watanabe

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009

Making Collusion-Secure Codes (More) Robust against Bit Erasure.

Koji Nuida

IACR Cryptol. ePrint Arch., 2009

An improvement of discrete Tardos fingerprinting codes.

Koji Nuida, Satoshi Fujitsu, Manabu Hagiwara, Takashi Kitagawa, Hajime Watanabe, Kazuto Ogawa, Hideki Imai

Des. Codes Cryptogr., 2009

An Error-Tolerant Variant of a Short 2-Secure Fingerprint Code and Its Security Evaluation.

Koji Nuida

Proceedings of the Advances in Information and Computer Security, 2009

An Improvement of Short 2-Secure Fingerprint Codes Strongly Avoiding False-Positive.

Koji Nuida

Proceedings of the Information Hiding, 11th International Workshop, 2009

An Improvement of Pseudorandomization against Unbounded Attack Algorithms - The Case of Fingerprint Codes.

Koji Nuida, Goichiro Hanaoka

Proceedings of the Information Theoretic Security, 4th International Conference, 2009

A General Conversion Method of Fingerprint Codes to (More) Robust Fingerprint Codes against Bit Erasure.

Koji Nuida

Proceedings of the Information Theoretic Security, 4th International Conference, 2009

2007

Optimization of Tardos's Fingerprinting Codes in a Viewpoint of Memory Amount.

Koji Nuida, Manabu Hagiwara, Hajime Watanabe, Hideki Imai

Proceedings of the Information Hiding, 9th International Workshop, 2007

A Tracing Algorithm for Short 2-Secure Probabilistic Fingerprinting Codes Strongly Protecting Innocent Users.

Satoshi Fujitsu, Koji Nuida, Manabu Hagiwara, Takashi Kitagawa, Hajime Watanabe, Kazuto Ogawa, Hideki Imai

Proceedings of the 4th IEEE Consumer Communications and Networking Conference, 2007

An Improvement of Tardos's Collusion-Secure Fingerprinting Codes with Very Short Lengths.

Koji Nuida, Satoshi Fujitsu, Manabu Hagiwara, Takashi Kitagawa, Hajime Watanabe, Kazuto Ogawa, Hideki Imai

Proceedings of the Applied Algebra, 2007

2006

Optimal probabilistic fingerprinting codes using optimal finite random variables related to numerical quadrature

Koji Nuida, Manabu Hagiwara, Hajime Watanabe, Hideki Imai

CoRR, 2006