Degree

• 工学博士（電気通信大学）

Research History

Education

Awards

• 情報理論とその応用サブソサイエティ学生優秀発表賞（2021-01）

Others

Papers

• Revisiting the Lossy Signature Scheme Based on DSDL Problem（2024-08）
• Lossy Signature Scheme Based on Decisional Exact LPN Problem with Concrete Hash Encodings（2024-07）
• Revisiting the Soundness of 5-Pass Identification Scheme（2024-03） [ResearchMap]
• Public-Key Identification Scheme Based on a New NP-Hard Tensor Problem（2024-03） [ResearchMap]
• A Proposal to Improve the Accuracy of BKW Algorithm（2024-01） [ResearchMap]
• More Efficient Two-Round Multi-Signature Scheme with Provably Secure Parameters for Standardized Elliptic Curves（2023-10） [DOI] [Othres link] [ResearchMap] [ResearchMap] [ResearchMap]
• A Framework for Shannon Ciphers under Side-Channel Attacks: a Strong Converse and More（2022-06-26） [DOI]
• New Post-Quantum Digital Signature Scheme based on MinRank Problem（2022-01-18）
• Three-Pass Identification Scheme Based on MinRank Problem with Half Cheating Probability.（2022） [DBLP] [Othres link] [Othres link] [Othres link]
• MinRank Based Three-Pass Identification Scheme with Half Cheating Probability（2021-10-26）
• Strong Converse for Distributed Source Coding with Encryption Using Correlated Keys（2021-10-17） [DOI]
• Achieving Pairing-Free Aggregate Signatures using Pre-Communication between Signers（2021-09） [DOI] [DBLP] [Othres link]
• Security Analysis on an El-Gamal-like Multivariate Encryption Scheme Based on Isomorphism of Polynomials（2021-08-11） [DOI] [Othres link]
• Achieving Pairing-Free Aggregate Signatures using Pre-Communication between Signers.（2021） [DOI] [DBLP] [Othres link]
• Revisiting the IND-CPA Security of LWE Encryption Scheme（2021-01） [Othres link]
• An Introduction to Provable Secure Post-Quantum Cryptography（2020-12）
• Generalization of Isomorphism of Polynomials with Two Secrets and Its Application to Public Key Encryption（2020-04-15） [Othres link]
• Cryptanalysis of Aggregate Γ-Signature and Practical Countermeasures in Application to Bitcoin.（2020） [DBLP] [Othres link] [Othres link]
• Secrecy Amplification of Distributed Encrypted Sources With Correlated Keys Using Post-Encryption-Compression（2019-11）
• Information Theoretic Security for Broadcasting of Two Encrypted Sources under Side-Channel Attacks（2019-08）
• Secure Broadcasting of Two Encrypted Sources under Side-Channel Attacks（2019-07-07） [Othres link]
• Information Theoretic Security for Shannon Cipher System under Side-Channel Attacks（2019-05）
• A New Family of Isomorphism of Polynomials and Its Application to Public Key Encryption Scheme（2019-03-07） [Othres link]
• 任意の環におけるイデアル格子問題に基づいた本人確認方式（2019-03）
• Measuring Security of Symmetric Encryption Schemes Against On-the-Fly Side-Channel Key-Recovery Attacks（2019） [DOI] [Scopus] [Scopus]
• A New Identification Scheme based on Syndrome Decoding Problem with Provable Security against Quantum Adversaries.（2019） [DBLP] [Othres link] [DBLP]
• A New Three-Pass Code-based Zero-Knowledge Identification Scheme with Cheating Probability of Exactly Half（2018-10-28）
• Post Encryption Compression with Affine Encoders for Secrecy Amplification in Distributed Source Encryption with Correlated Keys（2018-10-28）
• Entanglement Between Hash Encodings and Signatures from ID Schemes with Non-binary Challenges: A Case Study on Lightweight Code-Based Signatures（2018-09-25） [DOI] [DBLP] [Othres link] [Othres link]
• Extension of Easy-to-Understand Structure for Chosen-Ciphertext-Attack Security from Decisional Diffie-Hellman Assumption（2018-09-07）
• Information Theoretical Analysis of Side-Channel Attacks to the Shannon Cipher System（2018-08-15） [DOI]
• Reviving identification scheme based on isomorphism of polynomials with two secrets: A refined theoretical and practical analysis（2018-05-01） [DOI]
• Provably Secure Code-Based Signature Schemes via Fiat-Shamir Transform with Theoretical and Practical Analysis on Hash Encodings（2017-09-04） [CiNii Research (CiNii Articles)] [CiNii Books] [Othres link]
• New Public Key Encryption Scheme based on Code and Multivariate Polynomials in Binary Field（2017-08-28）
• Privacy Amplification of Distributed Encrypted Sources with Correlated Keys（2017-06-26）
• Provable Secure Signature Scheme against Quantum Adversaries based on Decisional Isomorphism of Polynomials with Two Secrets（2017-03-02） [CiNii Research (CiNii Articles)] [CiNii Books] [Othres link]
• Universally Composable RFID Mutual Authentication（2017-01） [DOI] [Web of Scientce]
• Provable secure post-quantum signature scheme based on isomorphism of polynomials in quantum random oracle model（2017） [DOI] [Scopus] [Scopus]
• Refining identification scheme based on isomorphism of polynomials with two secrets: A new theoretical and practical analysis（2016-05-30） [DOI]
• Revisiting Isomorphism of Polynomials with Two Secrets（2016-03-03）
• Revisiting Isomorphism of Polynomials with Two Secrets: towards a Shorter Zero Knowledge Protocol（2016-01-19）
• Sequential bitwise sanitizable signature schemes（2011） [DOI]
• An Efficient Authentication for Lightweight Devices by Perfectiong Zero-Knwoledgeness（2011-01）
• Improving Efficiency of An 'On the Fly' Identification Scheme by Perfecting Zero-Knowledgenes（2010-03）

Misc

Presentations

• LPN問題とDual-LPN問題に基づいたノイズ付き鍵共有の提案（2025-01-28）
• Card-Based Interactive Protocol Based on Partial Latin Square Completion Problem（2024-01-25） [ResearchMap]
• New NP-Complete Morphism of Polynomials Problem Based Identification Scheme（2023-01-25）
• New Post-Quantum Digital Signature Scheme based on MinRank Problem（2022-01-18）
• MinRank Based Three-Pass Identification Scheme with Half Cheating Probability（2021-10-26）
• Shannonワンタイムパッド暗号に置ける秘匿性の必要十分条件の再考察（2020-01-31）
• 事前通信モデルにおけるペアリングを用いない集約署名（2020-01-29）
• 単純な構造をもった公開鍵暗号方式の単純化（2020-01-28）
• Concurrently Secure Identification Schemes Based on the Hardness of Ideal Lattice Problems in all Rings and a General Simulatable Sampling（2019-12-26）
• Post-Quantum Cryptography for Internet of Things (IoT): Next Generation Cryptography for Next Generation Network（2019-09-06）
• LWE暗号の計算機における安全性評価（2019-01-24）
• A New Family of Isomorphism of Polynomials and Its Applications to Public Key Encryption Scheme（2019-01-24）
• Another Look at One-More Discrete Logarithm Problem in Generic Model（2019-01-23）
• 符号ベース暗号方式と多変数多項式ベース暗号方式を組み合わせた暗号方式の構築法（2019-01-22）
• 任意の環におけるイデアル格子問題に基づいた本人確認方式（2019-01-22）
• Code-based Identification Scheme with Security against Quantum Adversaries under Fully Concurrent Active Attacks（2018-12-19）
• Quantum Communications, Quantum Computers and Cryptography（2018-11-10）
• Distributed Privacy Amplification of Encrypted Multiple Sources with Correlated Keys（2016-12-14）
• Revisiting Isomorphism of Polynomials with Two Secrets: towards a Shorter Zero Knowledge Protocol（2016-01-19）

Books and Other Publications

Works

Research Projects

Media Coverage

Industrial Property Rights

Professional Memberships

• Institute of Electronics, Information and Communication Engineers (IEICE)
• International Association for Cryptologic Research (IACR)
• Association of Computing Machinery (ACM)
• The Institute of Electrical and Electronics Engineers, Inc. (IEEE)

Committee Memberships

Teaching Experience

• Applied Mathematics B
• Probability and Statistics
• Fundamentals of Computer and Network Engineering
• Topics in Mathematical Informatics I
• 情報数理学特論 I
• 情報・ネットワーク工学専攻基礎
• 情報通信工学実験
• 情報通信工学実験

Social Contribution

Academic Contribution