- 2021/04 - 現在 ブロックチェーンセキュリティワークショップ 委員
- 2020/05 - 現在 情報セキュリティ研究会 専門委員
- 2021/06 - 2027/05 情報処理学会 論文誌査読委員
- 2024/11 - 2025/07 The 30th Australasian Conference on Information Security and Privacy (ACISP 2025) Program Committee
- 2024/05 - 2025/01 暗号と情報セキュリティシンポジウム (SCIS) 2025 実行委員
- 2024/07 - 2024/12 コンピュータセキュリティシンポジウム2024(CSS2024)プログラム委員 (BWSトラック副チェア)
- 2024/05 - 2024/09 The 18th International Conference on Provable and Practical Security (ProvSec 2024) Program Committee
- 2023/09 - 2024/09 電子情報通信学会英文論文誌A「離散数学とその応用小特集」 編集委員
- 2024/05 - 2024/08 The 25th World Conference on Information Security Applications (WISA) 2024 Program Chair
- 2023/09 - 2024/07 第7回金沢暗号理論勉強会 実行委員
- 2023/11 - 2024/06 The 29th Australasian Conference on Information Security and Privacy (ACISP 2024) Program Committee
- 2023/11 - 2024/02 The 10th International Conference on Information Systems Security and Privacy (ICISSP2024) Program Committee
- 2023/09 - 2023/12 The 26th Annual International Conference on Information Security and Cryptology (ICISC 2023) Program Committee
- 2023/09 - 2023/12 The 24rd International Conference on Cryptology in India (INDOCRYPT 2023) Technical program committee
- 2023/07 - 2023/12 コンピュータセキュリティシンポジウム2023(CSS2023) プログラム委員
- 2023/04 - 2023/10 The 17th International Conference on Provable and Practical Security (ProvSec 2023) Program Committee
- 2022/07 - 2023/09 電子情報通信学会英文論文誌A「離散数学とその応用小特集」 編集幹事
- 2023/03 - 2023/08 The 17th International Conference on Network and System Security (NSS 2023) Technical Program Committee
- 2023/02 - 2023/07 The 28th Australasian Conference on Information Security and Privacy (ACISP 2023) Program Committee
- 2019/11 - 2023/07 ISO/IEC/JTC1 SC27 WG2 エキスパート
- 2022/09 - 2022/12 The 25th Annual International Conference on Information Security and Cryptology (ICISC 2022) Program Committee
- 2022/09 - 2022/12 The 23rd International Conference on Cryptology in India (Indocrypt) 2022 Program Committee
- 2022/07 - 2022/12 コンピュータセキュリティシンポジウム2022(CSS2022) プログラム委員
- 2022/02 - 2022/09 The 17th International Workshop on Security (IWSEC 2022) Program Committee
- 2021/08 - 2022/09 電子情報通信学会英文論文誌A「離散数学とその応用小特集」 編集委員
- 2022/02 - 2022/07 The 27th Australasian Conference on Information Security and Privacy (ACISP 2022) Program Committee
- 2021/03 - 2022/06 The 17th ACM ASIA Conference on Computer and Communications Security (ACM ASIACCS 2022) Workshop Chair
- 2018/06 - 2022/05 電子情報通信学会 和文論文誌A編集委員
- 2018/06 - 2022/05 電子情報通信学会 英文論文誌A編集委員
- 2021/06 - 2022/03 The 25th International Conference on Practice and Theory of Public-Key Cryptography (PKC 2022) Local-Organizing Committee
- 2021/04 - 2022/01 暗号と情報セキュリティシンポジウム (SCIS) 2022 組織委員
- 2021/04 - 2021/12 The 24th International Conference on Information Security and Cryptology (ICISC 2021) Program Committee
- 2021/07 - 2021/11 The 15th International Conference on Provable and Practical Security (ProvSec 2021) Program Committee
- 2021/02 - 2021/07 The 26th Australasian Conference on Information Security and Privacy (ACISP 2021) Program Committee
- 2020/10 - 2021/06 The 8th ACM ASIA Public-Key Cryptography Workshop, APKC 2021 Program Co-Chairs
- 2020/06 - 2021/06 19th International Conference on Applied Cryptography and Network Security (ACNS2021) Publicity Chair
- 2020/09 - 2021/03 電子情報通信学会英文論文誌A「離散数学とその応用小特集」 編集委員
- 2020/05 - 2021/03 IPSJ-ONE 2021 幹事
- 2019/04 - 2021/03 ブロックチェーンセキュリティ研究会 委員
- 2020/05 - 2020/12 The 14th International Conference on Network and System Security (NSS 2020) Program Committee
- 2020/04 - 2020/12 The 23rd International Conference on Information Security and Cryptology (ICISC 2020) Program Committee
- 2020/03 - 2020/10 The 14th International Conference on Provable and Practical Security (ProvSec 2020) Program Committee
- 2018/05 - 2020/05 情報セキュリティ研究会 幹事
- 2019/05 - 2020/03 IPSJ-ONE 2020 幹事
- 2019 - 2020 The 7th ACM ASIA Public-Key Cryptography Workshop, APKC 2020 Program Co-Chairs
- 2018 - 2019 The 6th ACM ASIA Public-Key Cryptography Workshop, APKC 2019 Program Co-Chairs
- 2019 - The 20th International Conference on Cryptology in India, Indocrypt 2019 Program Committee Member
- 2019 - The 22nd International Conference on Information Security and Cryptology, ICISC 2019 Program Committee Member
- 2019 - The 13th International Conference on Provable and Practical Security, ProvSec 2019 Program Committee
- 2019 - IPSJ-ONE 2019 企画・実施委員
- 2019 - The 14th International Workshop on Security, IWSEC2019 Local Organizing Committee
- 2017/05 - 2018/05 情報セキュリティ研究会 幹事補佐
- 2018 - The 21th Annual International Conference on Information Security and Cryptology, ICISC 2018 Program Committee
- 2018 - The 12th International Conference on Provable Security, ProvSec 2018 Program Committee
- 2018 - The 13th International Workshop on Security, IWSEC 2018 Local Organizing Committee
- 2018 - The 22nd Workshop on Elliptic Curve Cryptography, ECC 2018 Organizing Committee
- 2018 - The 14th International Conference on Information Security Practice and Experience, ISPEC 2018 Organizing Committee
- 2018 - The 5th ACM International Workshop on ASIA Public-Key Cryptography Program Co-Chair
- 2016/05 - 2017/05 情報セキュリティ研究会 専門委員
- 2016/01 - 2017/01 暗号と情報セキュリティシンポジウム (SCIS) 2017 組織委員
- 2017 - The 24th International Conference on Fast Software Encryption, FSE 2017 Organizing Committee
- 2017 - The 15th International Conference on Applied Cryptography and Network Security, ACNS 2017 Organizing Committee
- 2017 - The 11th International Conference on Network and System Security, NSS 2017 Program Committee
- 2017 - The 20th Annual International Conference on Information Security and Cryptology, ICISC 2017 Program Committee
- 2016 - The 15th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom 2016 Program Committee
- 2016 - The 10th International Conference on Network and System Security, NSS 2016 Program Committee
- 2016 - The 19th Annual International Conference on Information Security and Cryptology, ICISC 2016 Program Committee
- 2016 - The 3rd ACM International Workshop on ASIA Public-Key Cryptography Program Co-Chair
- 2015 - The 9th International Conference on Provable Security, ProvSec 2015 Organizing Committee
- 2015 - The 10th International Workshop on Security, IWSEC2015 Organizing Committee
- 2015 - The 14th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom 2015 Program Committee
- 2014 - The 9th ACM Symposium on Information, Computer and Communications Security, ASIACCS 2014 Organizing Committee
- 2014 - The 9th International Workshop on Security, IWSEC2014 Organizing Committee
- 2014 - The 2nd ACM International Workshop on ASIA Public-Key Cryptography Program Co-Chair
- 2013 - The 16th International Conference on Practice and Theory in Public-Key Cryptography, PKC 2013 Organizing Committee