Publications and Presentations
publications in reversed chronological order. Items in Japanese are published in domestic conferences.
2026
- PrivCrypt:GTH26Efficient Asymmetric Message Franking in the Plain ModelIn International Workshop on Foundations and Applications of Privacy-Enhancing Cryptography (PrivCrypt), May 2026acceptance rate = 7/21 (33.3%). Full version is [Crypto:GTH26].
- ACNS:HHMNT26(Re-)Formalization and Construction of Reusable and Robust Threshold Fuzzy ExtractorsIn Applied Cryptography and Network Security (ACNS) Conference, June 2026
- SCIS:HHMNT26ロバストかつ再利用可能なしきい値ファジー抽出器2026年暗号と情報セキュリティシンポジウム (SCIS2026) , January 2026Full version is [ACNS:HHMNT26].
- SCIS:THHKMN26Fuzzy Data-to-Random プロトコル2026年暗号と情報セキュリティシンポジウム (SCIS2026) , January 2026
2025
- IWSEC:FHHY25Multi-Designated Verifier Ring Signature: Generic Construction from Standard PrimitivesIn International Workshop on Security (IWSEC), November 2025acceptance rate = 27/95 (28.4%)
- PKC:AAHHW25Key Revocation in Registered Attribute-Based EncryptionIn International Conference on Practice and Theory of Public-Key Cryptography (PKC), May 2025acceptance rate = 60/199 (30.2%)
- CiC:MKOH25Round-Optimal Authenticated Key Exchange with Full Forward PrivacyIACR Communications in Cryptology, July 2025
- EPRINT:HOS25Signatures with Tight Adaptive Corruptions from Search AssumptionsIACR Cryptology ePrint Archive , January 2025
- SCIS:HIIOSSY25組み込み機器に対するソフトウェア印加の要求仕様策定に向けた脅威分析と課題提起2025年暗号と情報セキュリティシンポジウム (SCIS2025) , January 2025
- SCIS:FHHY25
- SCIS:MHO25Full Forward Privacy を持ち冗長な通信が不要な認証鍵交換2025年暗号と情報セキュリティシンポジウム (SCIS2025) , January 2025Full version is [CiC:MKOH25].
- SCIS:KHO25標準モデルで安全なプライバシー保護付き認証鍵交換のラウンド数削減2025年暗号と情報セキュリティシンポジウム (SCIS2025) , January 2025Full version is [CiC:MKOH25].
- SCIS:AHH25IDベース暗号に対する受信者アナモルフィック暗号2025年暗号と情報セキュリティシンポジウム (SCIS2025) , January 2025
- SCIS:HOS25A Tightly Secure Signature in the Multi-User Setting with Corruptions Based on Discrete-Logarithm Assumption2025年暗号と情報セキュリティシンポジウム (SCIS2025) , January 2025Full version is [EPRINT:HOS25].
2024
- SCN:ZHO24Security Model for Authenticated Key Exchange, ReconsideredIn International Conference on Security and Cryptography for Networks (SCN), September 2024acceptance rate = 33/90 (36.7%)
- CFAIL:YOH24Towards a Tightly Secure Signature in Multi-User Setting with Corruptions Based on Search AssumptionsIn Conference for Failed Approaches and Insightful Losses in Cryptology (CFAIL), August 2024acceptance rate = 4/4 (100%)
- CANS:CHHTS24How to Apply Fujisaki-Okamoto Transformation to Registration-Based EncryptionIn International Conference on Cryptology And Network Security (CANS), September 2024acceptance rate = 25/76 (32.9%)
- RWC:HKPPW24More Efficient Protocols for Post-Quantum Secure MessagingIn Real World Crypto Symposium (RWC), March 2024Talk based on [CCS:HKPPW21] and [AC:KKPP20].
- DCC:THO24Chosen-Ciphertext Secure Code-Based Threshold Public Key Encryptions with Short CiphertextDesigns, Codes and Cryptography, February 2024
- SCIS:CHHS24BDH仮定に基づく高効率かつ強安全なIDベースマッチメイキング暗号2024年暗号と情報セキュリティシンポジウム (SCIS2024) , January 2024Full version is [EPRINT:CHHS23].
- SCIS:YOH24デジタル署名の複数ユーザセキュリティにおける帰着ロスの下限について2024年暗号と情報セキュリティシンポジウム (SCIS2024) , January 2024Full version is [CFAIL:YOH24].
- SCIS:HYH24On the Security of Multi-Designated Verifier Signature2024年暗号と情報セキュリティシンポジウム (SCIS2024) , January 2024Full version is [CSF:HYH25].
- SCIS:HIOSSY24組み込み機器向けファームウェア更新における脅威抽出と課題提起2024年暗号と情報セキュリティシンポジウム (SCIS2024) , January 2024
- CSS:AHHAW24A Generic Construction of Deletable Registered Attribute-Based Encryption from Slotted Registered Attribute-Based Encryptionコンピュータセキュリティシンポジウム2024 (CSS 2024) , October 2024Full version is [PKC:AAHHW25].
- CSS:CHHTS24
2023
- EPRINT:CHHS23Identity-Based Matchmaking Encryption with Enhanced Privacy Against Chosen-Ciphertext AttacksIACR Cryptology ePrint Archive , September 2023
- Ph.D. ThesisConstruction and Analysis of Post-Quantum Key Exchange Protocols for Secure MessagingTokyo Institute of Technology , March 2023
2022
- J. Cryptol.:HKKP22An Efficient and Generic Construction for Signal’s Handshake (X3DH): Post-Quantum, State Leakage Secure, and DeniableJournal of Cryptology, May 2022Full version of [PKC:HKKP21].
2021
- SCIS:HKKP21Signal に適用可能な耐量子認証鍵交換プロトコルの設計と実装2021年暗号と情報セキュリティシンポジウム (SCIS2021) , January 2021Full version is [PKC:HKKP21].
2020
- Master ThesisCertificateless signatureの構成法に関する研究Tokyo Institute of Technology , March 2020A part of this work was published as [EPRINT:HOT19].
- SCIS:HOT20Certificateless signature の一般的構成法に対するタイトな帰着とDDH仮定に基づく構成2020年暗号と情報セキュリティシンポジウム (SCIS2020) , January 2020Full version is [EPRINT:HOT19].
2019
- Inf. Sci.:HO19Unrestricted and compact certificateless aggregate signature schemeInformation Sciences, June 2019
- EPRINT:HOT19Tight reduction for generic construction of certificateless signature and its instantiation from DDH assumptionIACR Cryptology ePrint Archive , November 2019
2018
- Bachelor ThesisCertificateless Aggregate Signature Schemeの構成法と安全性に関する研究Tokyo Institute of Technology , March 2018A part of this work was published as [Inf. Sci.:HO19].
- SCIS:HO18Certificateless Aggregate Signature Schemeの構成法と安全性に関する研究2018年暗号と情報セキュリティシンポジウム (SCIS2018) , January 2018Full version is [Inf. Sci.:HO19].