Research - Kenji Yasunaga

Papers

Fuzzy Signature with Biometric-Independent Verification
Haruna Higo, Toshiyuki Isshiki, Saki Otsuki, and Kenji Yasunaga
BIOSIG 2023. [DOI]
Rational Broadcast Protocols against Timid Adversaries
Keigo Yamashita and Kenji Yasunaga
GameSec 2023. [DOI] [ePrint]
Bit-Security Preserving Hardness Amplification
Shun Watanabe and Kenji Yasunaga
TCC 2024 (to appear). [ePrint]
Perfectly Secure Message Transmission Against Rational Adversaries
Maiki Fujita, Takeshi Koshiba, Kenji Yasunaga
IEEE Journal on Selected Areas in Information Theory, 2022. [DOI]
Full version of the work appeared at GameSec 2019 and GameSec 2018 (Outstanding Paper Award).
Unified View for Notions of Bit Security
Shun Watanabe and Kenji Yasunaga
Asiacrypt 2023. [DOI] [ePrint]
Bit Security as Computational Cost for Winning Games with High Probability
Shun Watanabe and Kenji Yasunaga
Asiacrypt 2021. [DOI] [ePrint]
Improved Asymptotic Bounds for Codes Correcting Insertions and Deletions
Kenji Yasunaga
Designs, Codes and Cryptography, 2024. [DOI] [arXiv]
Replacing Probability Distributions in Security Games via Hellinger Distance
Kenji Yasunaga
Information-Theoretic Cryptography (ITC) 2021. [DOI] [ePrint]
Practical Card-Based Protocol for Three-Input Majority
Kenji Yasunaga
IEICE Trans. Fundamentals, 2020. [DOI] [ePrint]
On the List Decodability of Insertions and Deletions
Tomohiro Hayashi and Kenji Yasunaga
IEEE Transactions on Information Theory, 2020. [DOI] [arXiv]
Rational Proofs against Rational Verifiers
Keita Inasawa and Kenji Yasunaga
IEICE Trans. Fundamentals, 2017. [DOI] [PDF]
Repeated Games for Generating Randomness in Encryption
Kenji Yasunaga and Kosuke Yuzawa.
IEICE Trans. Fundamentals, 2018. [DOI] [PDF]
Game-Theoretic Security for Two-Party Protocols
Haruna Higo, Keisuke Tanaka, Akihiro Yamada, and Kenji Yasunaga.
Manuscript. [ePrint] Part of the work appeared at ACISP 2012 and IWSEC 2013.
Error-Correcting Codes against Chosen-Codeword Attacks
Kenji Yasunaga.
ICITS 2016. [DOI] [PDF]
Error Correction by Structural Simplicity: Correcting Samplable Additive Errors
Kenji Yasunaga.
The Computer Journal, 2018. [DOI] [arXiv]
On the Limitations of Computational Fuzzy Extractors
Kenji Yasunaga and Kosuke Yuzawa.
IEICE Trans. Fundamentals, 2022. [DOI] [ePrint]
Post-Challenge Leakage Resilient Public-Key Cryptosystem in Split State Model
Eiichiro Fujisaki, Akinori Kawachi, Ryo Nishimaki, Keisuke Tanaka, and Kenji Yasunaga.
IEICE Trans. Fundamentals, 2015. [DOI] [PDF]
General Constructions of Rational Secret Sharing with Expected Constant-Round Reconstruction
Akinori Kawachi, Yoshio Okamoto, Keisuke Tanaka, and Kenji Yasunaga
The Computer Journal, 2017. [DOI] [ePrint]
Game-Theoretic Security for Bit Commitment
Haruna Higo, Keisuke Tanaka, and Kenji Yasunaga
IWSEC 2013. [PDF] [DOI]
List Decoding of Reed-Muller Codes Based on a Generalized Plotkin Construction
Kenji Yasunaga
IEICE Trans. Fundamentals, 2013. [PDF]
Public-Key Encryption with Lazy Parties
Kenji Yasunaga
IEICE Trans. Fundamentals, 2016. [PDF] [ePrint]
SCN 2012. [PDF] [DOI]
A Game-Theoretic Perspective on Oblivious Transfer
Haruna Higo, Keisuke Tanaka, Akihiro Yamada, and Kenji Yasunaga
ACISP 2012. [PDF] [DOI]
Leakage-Resilience of Stateless/Stateful Public-Key Encryption from Hash Proofs
Manh Ha Nguyen, Keisuke Tanaka, and Kenji Yasunaga
IEICE Trans. Fundamentals, 2013. [PDF] ACISP 2012. [DOI]
Randomness Leakage in the KEM/DEM Framework
Hitoshi Namiki, Keisuke Tanaka, and Kenji Yasunaga
IEICE Trans. Fundamentals, 2014. [PDF] ProvSec 2011. [PDF] [DOI]
Weak Oblivious Transfer from Strong One-Way Functions
Keisuke Tanaka, Akihiro Yamada, and Kenji Yasunaga
ProvSec 2011. [PDF] [DOI]
On Correctable Errors of Binary Linear Codes
Kenji Yasunaga and Toru Fujiwara
IEEE Transactions on Information Theory, June 2010. [PDF] [DOI]
Monotone Error Structure and Local Weight Distribution of Linear Codes
Kenji Yasunaga
Ph.D. Dissertation, Osaka University, January 2008. [PDF] [PS]
Local Weight Distribution of the (256, 93) Third-Order Binary Reed-Muller Code
Kenji Yasunaga, Toru Fujiwara, and Tadao Kasami
IEICE Trans. Fundamentals, 2007.
Determination of the Local Weight Distribution of Binary Linear Block Codes
Kenji Yasunaga and Toru Fujiwara
IEEE Transactions on Information Theory, October 2006. [PDF] [DOI]

解説論文・記事

暗号におけるゲーム理論
安永憲司
コンピュータソフトウェア, 2017年. [DOI]
符号理論の視点による擬似ランダム構造の統一的理解
安永憲司
電子情報通信学会基礎・境界ソサイエティ Fundamentals Review, 2011年. [DOI]

Talk Slides

Rational Broadcast Protocols against Timid Adversaries
GameSec 2023, Avignon, France, October 2023. [PDF]
Quantifying the Security Levels of Cryptographic Primitives
TENCON 2022 (Invited Talk), Hong Kong/Online, November 2022. [PDF]
Perfectly Secure Message Transmission Against Independent Rational Adversaries
GameSec 2019, November 2019. [PDF]
On the List Decodability of Insertions and Deletions
Workshop on Error Correcting Codes 2018. (Updated version of ISIT 2018.) [PDF]
Error-Correcting Codes against Chosen-Codeword Attacks
ICITS 2016, August 2016. [PDF]
Correction of Samplable Additive Errors
ISIT 2014, July 2014. [PDF]
Public-Key Encryption with Lazy Parties
Cryptography Seminar at Kyushu University, Dec. 2012. [PDF]
A Game-Theoretic Perspective on Oblivious Transfer
Cryptography Seminar at Kyushu University, May 2012. [PDF]
Randomness Leakage in the KEM/DEM Framework
ProvSec 2011. [PDF]
Uncorrectable Errors of Weight Half the Minimum Distance for Binary Linear Codes
ISIT 2008. [PDF]
The number of correctable errors of weight d/2+1 for the 1st-order Reed-Muller code
Poster presentation at Osaka University, 2008. [PDF]
Correctable Errors of Weight Half the Minimum Distance Plus One for the First-Order Reed-Muller Codes
AAECC-17, 2007. [PDF]
On Trial Set and Uncorrectable Errors for the First-Order Reed-Muller Codes
HISC 2007. [PDF]
Local Weight Distribution of the (256, 93) Third-Order Binary Reed-Muller Code
HISC 2006. [PDF]
Relations between the Local Weight Distributions of a Linear Block Code, Its Extended Code, and Its Even Weight Subcode
ISIT 2005. [PDF]
The Local Weight Distributions of Transitive Invariant Codes and Their Punctured Codes
HISC 2005. [PDF]
An Algorithm for Computing the Local Weight Distribution of Binary Linear Codes Closed under a Group of Permutations
ISITA 2004. [PDF]

Talk Slides in Japanese

挿入や削除を訂正する符号のサイズの上界・下界
エクスパンダーグラフの新しい構成手法の確立とその応用2, 九州大学マス・フォア・インダストリ研究所, 2023年9月. [PDF]
判定問題が128ビット安全であるとは?
SCIS 2023, 小倉, 2023年1月. [PDF]
挿入・削除訂正符号のサイズの上下界式
第45回情報理論とその応用シンポジウム（ポスター）, 登別，2022年12月. [PDF]
明示的構成の計算量と値域回避問題
エクスパンダーグラフの構成手法の確立とその応用，九州大学マス・フォア・インダストリ研究所，2022年8月. [PDF]
すべての通信路が敵に支配されてもゲーム理論的には安全な通信ができる
LA シンポジウム, 2020年2月. [PDF]
エクスパンダーグラフと誤り訂正符号
実験計画法と符号および関連する組み合わせ構造，2019年11月. [PDF]
暗号技術に対するゲーム理論的なアプローチ
第9回暗号及び情報セキュリティと数学の相関ワークショップ (CRISMATH 2017), 2017年12月. [PDF]
ブロックチェーン・暗号通貨の数理
金沢大学暗号理論勉強会, 2017年6月. [PDF]
訂正可能な削除割合の限界
第1回情報理論および符号理論とその応用ワークショップ, 2017年2月. [PDF]
不完全な乱数と暗号
ELC 暗号理論秋学校, 河口湖セントビレッヂ, 2015年9月. [PDF]
計算量制限通信路における誤り訂正
第3回誤り訂正符号のワークショップ, 2014年9月. [PDF]
ゲーム理論と暗号
ELC 暗号理論秋学校, 河口湖セントビレッヂ, 2014年9月. [PDF]
計算量的ファジィ抽出器
暗号理論ワークショップ, 2014年3月. [PDF]
ブラックボックス構成とその限界
暗号理論秋学校, 河口湖セントビレッヂ, 2013年9月. [PDF]
Error Correction in Computationally Bounded Channels
第六回計算量理論若手の会ワークショップ, 米沢, 2013年9月. [PDF]
なまけもの暗号
第6回公開鍵暗号の安全な構成とその応用ワークショップ, 2013年3月. [PDF]
効率的に計算可能な加法的誤りの訂正可能性
SITA 2012, 別府, 2012年12月. [PDF]
合理的な秘密分散における不可能性とその回避方法
CSS 2012, 松江, 2012年10月. [PDF]
暗号理論とゲーム理論
暗号理論秋学校, 河口湖セントビレッヂ, 2012年9月. [PDF]
非同時通信路における合理的秘密分散
情報セキュリティ研究会, 2012年5月. [PDF]
Reed-Solomon 符号と擬似ランダム性
電子情報通信学会ソサイエティ大会, 2010年9月. [PDF]
List decoding for Reed-Muller codes and its application to polar codes
Private presentation, 2010年5月. [PDF]
誤り訂正符号の訂正能力分析
コンピュテーション研究会, 2009年3月. [PDF]
誤り訂正符号における誤りの単調性を利用した訂正能力分析
GCOE seminar, 2008年10月. [PDF]
ネットワーク符号化
Private presentation, 2008年5月. [PDF]
Expander 符号
Private presentation, 2008年4月. [PDF]
Monotone Error Structure and Local Weight Distribution of Linear Codes
公聴会, 2007年10月 [PDF]
expander 符号に関する文献調査
Private presentation, 2005年12月 [PDF]