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尾花 賢
情報科学部 コンピュータ科学科
教授
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https://researchmap.jp/7000000709
研究活動情報
■ 論文
■ 共同研究・競争的資金等の研究課題
- Biometrically-independent fuzzy signatures: signing with biometrics without embedding them.
Saki Otsuki; Haruna Higo; Toshiyuki Isshiki; Kengo Mori; Satoshi Obana; Hiroto Tamiya; Kenji Yasunaga
EURASIP J. Image Video Process., 2025年12月, ［査読有り］ - Formal Verification of Composite Field Multipliers for Information-Theoretically Secure Radio Communication in Spacecraft Control.
Sumio Morioka; Satoshi Obana; Maki Yoshida
The 17th NASA Formal Methods Symposium (NFM 2025), 2025年, ［査読有り］ - Feasibility Study with Actual Space Rockets Towards Information Theoretically Secure Radio Communication.
Sumio Morioka; Satoshi Obana; Maki Yoshida
SAI (2), 2024年, ［招待有り］ - Secure Communication via GNSS-based Key Synchronization.
Maki Yoshida; Sumio Morioka; Satoshi Obana
Proceedings of Work-in-Progress in Hardware and Software for Location Computation (WIPHAL 2023), 2023年, ［査読有り］ - A Cryptanalysis against the Cheating Detectable Secret Sharing from NISS 2019.
Kiminori Kaneko; Satoshi Obana
Eleventh International Symposium on Computing and Networking (CANDAR 2023), 2023年, ［査読有り］ - On Cryptographic Algorithms and Key Length for Delayed Disclosure Authentication of GNSS.
Maki Yoshida; Sumio Morioka; Satoshi Obana
2022 International Conference on Localization and GNSS (ICL-GNSS 2022), 2022年, ［査読有り］ - Fully Subliminal-Free Schnorr Signature for Nonce.
Sho Sugauchi; Satoshi Obana
Tenth International Symposium on Computing and Networking (CANDAR 2022), 2022年, ［査読有り］ - Exposure Resilient Public-key Encryption with Keyword Search against Keyword Guessing Attack.
Kaito Uemura; Satoshi Obana
Proceedings of the 18th International Conference on Security and Cryptography (SECRYPT 2021), 2021年, ［査読有り］ - Cheating Detectable Secret Sharing Scheme from Multiplicative Homomorphic Authentication Function.
Kaichi Sato; Satoshi Obana
Ninth International Symposium on Computing and Networking (CANDAR 2021), 2021年, ［査読有り］ - Improved Post-quantum-secure Face Template Protection System Based on Packed Homomorphic Encryption.
Hiroto Tamiya; Toshiyuki Isshiki; Kengo Mori; Satoshi Obana; Tetsushi Ohki
Proceedings of the 20th International Conference of the Biometrics Special Interest Group (BIOSIG 2021), 2021年, ［査読有り］ - Compact Verifiably Multiplicative Secret Sharing.
Maki Yoshida; Satoshi Obana
International Symposium on Information Theory and Its Applications (ISITA 2020), 2020年, ［査読有り］ - Efficient Constructions of Non-interactive Secure Multiparty Computation from Pairwise Independent Hashing.
Satoshi Obana; Maki Yoshida
Proceedings of the 17th International Joint Conference on e-Business and Telecommunications (SECRYPT 2020), 2020年, ［査読有り］ - Almost Optimal Cheating-Detectable (2,2,n) Ramp Secret Sharing Scheme.
Tomoki Agematsu; Satoshi Obana
2019 Seventh International Symposium on Computing and Networking (CANDAR 2019), 2019年, ［査読有り］ - Security Requirements for Store-on-Client and Verify-on-Server Secure Biometric Authentication.
Haruna Higo; Toshiyuki Isshiki; Masahiro Nara; Satoshi Obana; Toshihiko Okamura; Hiroto Tamiya
Emerging Technologies for Authorization and Authentication - Second International Workshop (ETAA@ESORICS), 2019年, ［査読有り］ - Verifiably Multiplicative Secret Sharing.
Maki Yoshida; Satoshi Obana
IEEE Transactions on Information Theory, 2019年, ［査読有り］ - Flaws in a Verifiably Multiplicative Secret Sharing Scheme from ICITS 2017.
Maki Yoshida; Satoshi Obana
IACR Cryptology ePrint Archive, 2018年 - Updatable Searchable Symmetric Encryption with Fine-Grained Delete Functionality.
Motoki Miyano; Satoshi Obana
Sixth International Symposium on Computing and Networking (CANDAR 2018), 2018年, ［査読有り］ - How to Realize Highly Accurate Computation with Fully Homomorphic Encryption.
Tomoki Agematsu; Satoshi Obana
Sixth International Symposium on Computing and Networking (CANDAR 2018), 2018年, ［査読有り］ - Privacy-Preserving Fingerprint Authentication Resistant to Hill-Climbing Attacks.
Haruna Higo; Toshiyuki Isshiki; Kengo Mori; Satoshi Obana
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2018年, ［査読有り］ - On the (in)efficiency of non-interactive secure multiparty computation.
Maki Yoshida; Satoshi Obana
Designs, Codes and Cryptography, 2018年, ［査読有り］ - Verifiably Multiplicative Secret Sharing.
Maki Yoshida; Satoshi Obana
Information Theoretic Security - 10th International Conference (ICITS 2017), 2017年, ［査読有り］ - Searchable Symmetric Encryption Supporting Update.
Shunta Nozoe; Satoshi Obana
2016 International Symposium on Information Theory and Its Applications (ISITA 2016), 2016年, ［査読有り］ - Efficient Threshold Secret Sharing Schemes Secure Against Rushing Cheaters.
Avishek Adhikari; Kirill Morozov; Satoshi Obana; Partha Sarathi Roy; Kouichi Sakurai; Rui Xu
Information Theoretic Security - 9th International Conference (ICITS 2016), 2016年, ［査読有り］ - Cheating Detectable Secret Sharing Scheme Suitable for Implementation.
Hidetaka Hoshino; Satoshi Obana
Fourth International Symposium on Computing and Networking (CANDAR 2016), 2016年, ［査読有り］ - A Password-Protected Secret Sharing Based on Kurosawa-Desmedt Hybrid Encryption.
Takahiro Arai; Satoshi Obana
Fourth International Symposium on Computing and Networking (CANDAR 2016), 2016年, ［査読有り］ - An Efficient Construction of Non-Interactive Secure Multiparty Computation.
Satoshi Obana; Maki Yoshida
Cryptology and Network Security - 15th International Conference (CANS 2016), 2016年, ［査読有り］ - Efficient Threshold Secret Sharing Schemes Secure against Rushing Cheaters.
Avishek Adhikari; Kirill Morozov; Satoshi Obana; Partha Sarathi Roy; Kouichi Sakurai; Rui Xu
IACR Cryptology ePrint Archive, 2015年 - Privacy-Preserving Fingerprint Authentication Resistant to Hill-Climbing Attacks.
Haruna Higo; Toshiyuki Isshiki; Kengo Mori; Satoshi Obana
Selected Areas in Cryptography - SAC 2015 - 22nd International Conference (SAC 2015), 2015年, ［査読有り］ - Almost Optimum Secret Sharing Schemes with Cheating Detection for Random Bit Strings.
Hidetaka Hoshino; Satoshi Obana
Advances in Information and Computer Security - 10th International Workshop on Security (IWSEC 2015), 2015年, ［査読有り］ - On the (In)Efficiency of Non-Interactive Secure Multiparty Computation.
Maki Yoshida; Satoshi Obana
Information Security and Cryptology - ICISC 2015 - 18th International Conference (ICISC 2015), 2015年, ［査読有り］ - Cheating Detectable Secret Sharing Schemes Supporting an Arbitrary Finite Field.
Satoshi Obana; Kazuya Tsuchida
Advances in Information and Computer Security - 9th International Workshop on Security (IWSEC 2014), 2014年, ［査読有り］ - Protocols for Evaluating Conditional Sum on Encrypted Data.
Hiroki Hayashi; Satoshi Obana
International Symposium on Information Theory and its Applications (ISITA 2014), 2014年, ［査読有り］ - Detection of Cheaters in Non-interactive Polynomial Evaluation.
Maki Yoshida; Satoshi Obana
IACR Cryptology ePrint Archive, 2013年 - New Security Definitions for Biometric Authentication with Template Protection: Toward covering more threats against authentication systems.
Toshiyuki Isshiki; Toshinori Araki; Kengo Mori; Satoshi Obana; Tetsushi Ohki; Shizuo Sakamoto
2013 BIOSIG - Proceedings of the 12th International Conference of Biometrics Special Interest Group (BIOSIG 2013), 2013年, ［査読有り］ - Flexible architecture optimization and ASIC implementation of group signature algorithm using a customized HLS methodology.
Sumio Morioka; Toshiyuki Isshiki; Satoshi Obana; Yuichi Nakamura; Kazue Sako
HOST 2011, Proceedings of the 2011 IEEE International Symposium on Hardware-Oriented Security and Trust (HOST 2011), 2011年, ［査読有り］ - Almost Optimum t-Cheater Identifiable Secret Sharing Schemes.
Satoshi Obana
Advances in Cryptology - EUROCRYPT 2011 - 30th Annual International Conference on the Theory and Applications of Cryptographic Techniques (EUROCRYPT 2011), 2011年, ［査読有り］ - IC card-based single sign-on system that remains secure under card analysis.
Jun Furukawa; Kazue Sako; Satoshi Obana
Proceedings of the 5th Workshop on Digital Identity Management, 2009年, ［査読有り］ - Flaws in Some Secret Sharing Schemes Against Cheating.
Toshinori Araki; Satoshi Obana
Information Security and Privacy (ACISP 2007), 2007年, ［査読有り］ - Almost Optimum Secret Sharing Schemes Secure Against Cheating for Arbitrary Secret Distribution.
Satoshi Obana; Toshinori Araki
Advances in Cryptology - ASIACRYPT 2006, 12th International Conference on the Theory and Application of Cryptology and Information Security (ASIACRYPT 2006), 2006年, ［査読有り］ - The Hierarchy of Key Evolving Signatures and a Characterization of Proxy Signatures.
Tal Malkin; Satoshi Obana; Moti Yung
IACR Cryptology ePrint Archive, 2004年 - The Hierarchy of Key Evolving Signatures and a Characterization of Proxy Signatures.
Tal Malkin; Satoshi Obana; Moti Yung
Advances in Cryptology - EUROCRYPT 2004, International Conference on the Theory and Applications of Cryptographic Techniques (EUROCRYPT 2004), 2004年, ［査読有り］ - An Implementation of a Universally Verifiable Electronic Voting Scheme based on Shuffling.
Jun Furukawa; Hiroshi Miyauchi; Kengo Mori; Satoshi Obana; Kazue Sako
Financial Cryptography, 2002年, ［査読有り］ - Combinatorial Bounds on Authentication Codes with Arbitration.
Kaoru Kurosawa; Satoshi Obana
Designs, Codes and Cryptography, 2001年, ［査読有り］ - Bounds and Combinatorial Structure of Multi-Receiver-Codes.
Satoshi Obana; Kaoru Kurosawa
Designs, Codes and Cryptography, 2001年, ［査読有り］ - Combinatorial Classification of Optimal Authentication Codes with Arbitration.
Satoshi Obana; Kaoru Kurosawa
Designs, Codes and Cryptography, 2000年, ［査読有り］ - A2-code = Affine resolvable = BIBD.
Satoshi Obana; Kaoru Kurosawa
Information and Communication Security (ICICS 1997), 1997年, ［査読有り］ - Characterisation of (k,n) Multi-receiver Authentication.
Kaoru Kurosawa; Satoshi Obana
Information Security and Privacy (ACISP 1997), 1997年, ［査読有り］ - Veto is Impossible in Secret Sharing Schemes.
Satoshi Obana; Kaoru Kurosawa
Information Processing Letters, 1996年, ［査読有り］ - Combinatorial Bounds for Authentication Codes with Arbitration.
Kaoru Kurosawa; Satoshi Obana
Advances in Cryptology - EUROCRYPT '95, International Conference on the Theory and Application of Cryptographic Techniques (EUROCRYPT 1995), 1995年, ［査読有り］ - t-Cheater Identifiable (k,n) Threshold Secret Sharing Schemes.
Kaoru Kurosawa; Satoshi Obana; Wakaha Ogata
Advances in Cryptology - CRYPTO '95 (CRYPTO 1995), 1995年, ［査読有り］
■ 共同研究・競争的資金等の研究課題
