研究業績リスト
その他
作成日時 04/2026–03/2029
Offer Organization: 日本学術振興会, System Name: 科学研究費助成事業, Category: 基盤研究(B), Fund Type: competitive_research_funding, Overall Grant Amount: - (direct: 19000000, indirect: 5700000)
その他
A Unified Theoretical Framework for Encrypted Search Research
作成日時 04/2026–03/2030
Offer Organization: Japan Society for the Promotion of Science, System Name: Grants-in-Aid for Scientific Research, Category: Grant-in-Aid for Scientific Research (B), Fund Type: competitive_research_funding, Overall Grant Amount: - (direct: 14100000, indirect: 4230000)
その他
作成日時 04/2026–03/2031
Offer Organization: 日本学術振興会, System Name: 科学研究費助成事業, Category: 基盤研究(B), Fund Type: competitive_research_funding, Overall Grant Amount: - (direct: 14200000, indirect: 4260000)
その他
作成日時 04/2023–03/2026
Offer Organization: 日本学術振興会, System Name: 科学研究費助成事業, Category: 基盤研究(A), Fund Type: competitive_research_funding, Overall Grant Amount: - (direct: 36300000, indirect: 10890000)
その他
Towards Encrypted Search Protocols with Flexible Search Functions and High Efficiency
作成日時 04/2021–03/2025
Offer Organization: Japan Society for the Promotion of Science, System Name: Grants-in-Aid for Scientific Research, Category: Grant-in-Aid for Scientific Research (B), Fund Type: competitive_research_funding, Overall Grant Amount: - (direct: -, indirect: -)
その他
作成日時 04/2021–03/2025
Offer Organization: 日本学術振興会, System Name: 科学研究費助成事業, Category: 基盤研究(B), Fund Type: competitive_research_funding, Overall Grant Amount: - (direct: 13300000, indirect: 3990000)
その他
Leading Initiative for Excellent Young Researchers (LEADER)
作成日時 12/2019–03/2021
Offer Organization: MEXT, System Name: -, Category: -, Fund Type: competitive_research_funding, Overall Grant Amount: - (direct: 0, indirect: 0)
その他
Resilience Enhancement of IoT Ecosystem by Cryptographic Technologies
作成日時 06/2018–03/2023
Offer Organization: Japan Society for the Promotion of Science, System Name: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (S), Category: Grant-in-Aid for Scientific Research (S), Fund Type: competitive_research_funding, Overall Grant Amount: - (direct: 149500000, indirect: 44850000)
その他
Searchable Symmetric Encryption for a Long Term Use
作成日時 04/2018–03/2022
Offer Organization: Japan Society for the Promotion of Science, System Name: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Category: Grant-in-Aid for Scientific Research (C), Fund Type: competitive_research_funding, Overall Grant Amount: - (direct: 3200000, indirect: 960000)
その他
Development of Information-Theoretic Security Based on Guessing Secrecy
作成日時 04/2017–03/2021
Offer Organization: Japan Society for the Promotion of Science, System Name: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Category: Grant-in-Aid for Scientific Research (B), Fund Type: competitive_research_funding, Overall Grant Amount: - (direct: 14100000, indirect: 4230000)
In this study, we investigated the recently proposed information-theoretic security notion called guessing secrecy for developing information-theoretic security. First, we proposed several definitions of guessing secrecy and investigated their relationship. Then, by proposing several cryptographic protocols satisfying guessing secrecy, we found that the existence of the security gap depends on the protocols. We also measured the computation time required to guess a key of AES under a probing attack and clarified the relationship between guessing and computation time. Besides the study of guessing secrecy, we proposed several cryptographic protocols that satisfy perfect secrecy, especially secret sharing and multi-party computation.