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Journal Articles
- 2024
[j17]Kyosuke Yamashita, Keisuke Hara, Yohei Watanabe, Naoto Yanai, Junji Shikata:
Designated Verifier Signature with Claimability. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 107(3): 203-217 (2024)- [j16]Kyosuke Yamashita, Keisuke Hara:
On the Black-Box impossibility of multi-designated verifiers signature schemes from ring signature schemes. J. Math. Cryptol. 18(1) (2024) - [j15]Keisuke Hara
:
A logarithmic-sized accountable ring signature scheme in the standard model. Theor. Comput. Sci. 997: 114516 (2024) - 2023
- [j14]Hiroki Yamamuro, Keisuke Hara, Masayuki Tezuka, Yusuke Yoshida, Keisuke Tanaka:
Forward Secure Message Franking with Updatable Reporting Tags. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 106(9): 1164-1176 (2023) - 2022
- [j13]Yi Lu, Keisuke Hara, Keisuke Tanaka:
Multikey Verifiable Homomorphic Encryption. IEEE Access 10: 84761-84775 (2022) - [j12]Keisuke Hara, Takahiro Matsuda, Goichiro Hanaoka, Keisuke Tanaka:
Generic transformation from broadcast encryption to round-optimal deniable ring authentication. Des. Codes Cryptogr. 90(2): 277-316 (2022) - [j11]Keisuke Hara, Takahiro Matsuda, Keisuke Tanaka:
Receiver Selective Opening Chosen Ciphertext Secure Identity-Based Encryption. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 105-A(3): 160-172 (2022) - [j10]Keisuke Hara, Toshihiro Fukuda, Kyosuke Taguchi, Hiromi Isobe:
Surface Texturing Technique Based on Ultrasonic Turning for Improving Tribological Properties. Int. J. Autom. Technol. 16(1): 78-86 (2022) - 2021
- [j9]Keisuke Hara, Keisuke Tanaka:
Ring Signature With Unconditional Anonymity in the Plain Model. IEEE Access 9: 7762-7774 (2021) - [j8]Yi Lu, Keisuke Hara, Keisuke Tanaka:
Receiver Selective Opening CCA Secure Public Key Encryption from Various Assumptions. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 104-A(9): 1206-1218 (2021) - [j7]Kyohei Sudo, Keisuke Hara, Masayuki Tezuka, Yusuke Yoshida, Keisuke Tanaka:
Watermarkable Signature with Computational Function Preserving. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 104-A(9): 1255-1270 (2021) - [j6]Hiromi Isobe, Soutarou Tsuji, Keisuke Hara, Jun Ishimatsu:
Improvement of Removal Rate of Tape Lapping by Applying Fluid with Ultrasonic Excited Cavitation. Int. J. Autom. Technol. 15(1): 65-73 (2021) - [j5]Hiromi Isobe, Masatoshi Okuda, Keisuke Hara, Jun Ishimatsu:
Effect of Vibration Direction of Ultrasonic Vibrating Cutting Edge on Internal Stress Fluctuation of Workpiece. Int. J. Autom. Technol. 15(4): 457-465 (2021) - [j4]Keisuke Hara, Keisuke Tanaka:
Tightly secure ring signatures in the standard model. Theor. Comput. Sci. 892: 208-237 (2021) - 2019
- [j3]Hiromi Isobe, Natsuki Sasada, Keisuke Hara, Jun Ishimatsu:
Visualization of Stress Distribution by Photoelastic Method Under Ultrasonic Grinding Condition. Int. J. Autom. Technol. 13(6): 736-742 (2019) - [j2]Keisuke Hara, Fuyuki Kitagawa, Takahiro Matsuda, Goichiro Hanaoka, Keisuke Tanaka:
Simulation-based receiver selective opening CCA secure PKE from standard computational assumptions. Theor. Comput. Sci. 795: 570-597 (2019) - 2016
- [j1]Keisuke Hara, Takayuki Ito:
A Scoring Rule-based Truthful Demand Response Mechanism. Int. J. Networked Distributed Comput. 4(3): 182-192 (2016)
Conference and Workshop Papers
- 2024
- [c18]Takumi Matsuura, Keisuke Hara, Kyosuke Yamashita:
Designated Verifier Signature with Repudiability. APKC@AsiaCCS 2024 - [c17]Sohto Chiku, Keisuke Hara, Keitaro Hashimoto, Toi Tomita, Junji Shikata:
How to Apply Fujisaki-Okamoto Transformation to Registration-Based Encryption. CANS (2) 2024: 145-165 - [c16]Ryuya Hayashi, Junichiro Hayata, Keisuke Hara, Kenta Nomura, Masaki Kamizono, Goichiro Hanaoka:
Multi-query Verifiable PIR and Its Application. CANS (2) 2024: 166-190 - 2023
- [c15]Kyohei Sudo, Masayuki Tezuka, Keisuke Hara, Yusuke Yoshida:
Quantum Search-to-Decision Reduction for the LWE Problem. AFRICACRYPT 2023: 395-413 - [c14]Kyosuke Yamashita, Keisuke Hara, Yohei Watanabe, Naoto Yanai, Junji Shikata:
Designated Verifier Signature with Claimability. APKC@AsiaCCS 2023: 21-32 - [c13]Sohto Chiku, Keisuke Hara, Junji Shikata:
Chosen Ciphertext Security for Blind Identity-Based Encryption with Certified Identities. ISPEC 2023: 299-314 - [c12]Sohto Chiku, Keisuke Hara, Junji Shikata:
Identity-Based Matchmaking Encryption Secure Against Key Generation Center. ProvSec 2023: 251-273 - 2022
- [c11]Yi Lu, Keisuke Hara, Kazuma Ohara, Jacob C. N. Schuldt, Keisuke Tanaka:
Efficient Two-Party Exponentiation from Quotient Transfer. ACNS 2022: 643-662 - 2021
- [c10]Keisuke Hara, Takahiro Matsuda, Keisuke Tanaka:
Receiver Selective Opening Chosen Ciphertext Secure Identity-Based Encryption. APKC@AsiaCCS 2021: 51-59 - [c9]Hiroki Yamamuro, Keisuke Hara, Masayuki Tezuka, Yusuke Yoshida, Keisuke Tanaka:
Forward Secure Message Franking. ICISC 2021: 339-358 - 2020
- [c8]Daiki Hiraga, Keisuke Hara, Masayuki Tezuka, Yusuke Yoshida, Keisuke Tanaka:
Security Definitions on Time-Lock Puzzles. ICISC 2020: 3-15 - [c7]Kyohei Sudo, Masayuki Tezuka, Keisuke Hara, Yusuke Yoshida, Keisuke Tanaka:
Watermarkable Signature with Computational Function Preserving. ProvSec 2020: 124-144 - [c6]Yi Lu, Keisuke Hara, Keisuke Tanaka:
Receiver Selective Opening CCA Secure Public Key Encryption from Various Assumptions. ProvSec 2020: 213-233 - 2018
- [c5]Keisuke Hara, Fuyuki Kitagawa, Takahiro Matsuda, Goichiro Hanaoka, Keisuke Tanaka:
Simulation-Based Receiver Selective Opening CCA Secure PKE from Standard Computational Assumptions. SCN 2018: 140-159 - 2015
- [c4]Keisuke Hara, Takayuki Ito:
A scoring rule-based truthful demand response mechanism. ICIS 2015: 355-360 - 2013
- [c3]Keisuke Hara, Takayuki Ito:
A Mediation Mechanism for Automated Negotiating Agents Whose Utility Changes over Time. AAAI 2013: 1613-1614 - [c2]Keisuke Hara, Mikoto Okumura, Takayuki Ito:
A Mediator-Based Agent Negotiation Protocol for Utilities That Change with Time. IEA/AIE 2013: 12-21 - [c1]Shantanu Chakraborty, Takayuki Ito, Keisuke Hara:
Incentive based smart pricing scheme using scoring rule. ISGT Europe 2013: 1-5
Parts in Books or Collections
- 2015
- [p1]Keisuke Hara, Takayuki Ito:
Effects of GA Based Mediation Protocol for Utilities that Change Over Time. Next Frontier in Agent-Based Complex Automated Negotiation 2015: 73-87
Editorship
- 2024
- [e1]Keisuke Hara, Daiki Miyahara:
Proceedings of the 11th ACM Asia Public-Key Cryptography Workshop, APKC 2024, Singapore, July 1-5, 2024. ACM 2024 [contents]
Informal and Other Publications
- 2024
- [i7]Sohto Chiku, Keisuke Hara, Junji Shikata:
Chosen Ciphertext Security for (Hierarchical) Identity-Based Matchmaking Encryption. IACR Cryptol. ePrint Arch. 2024: 1292 (2024) - 2023
- [i6]Kyohei Sudo, Masayuki Tezuka, Keisuke Hara, Yusuke Yoshida:
Quantum Search-to-Decision Reduction for the LWE Problem. IACR Cryptol. ePrint Arch. 2023: 344 (2023) - [i5]Kyosuke Yamashita, Keisuke Hara:
On the Black-Box Impossibility of Multi-Designated Verifiers Signature Schemes from Ring Signature Schemes. IACR Cryptol. ePrint Arch. 2023: 1249 (2023) - [i4]Kyosuke Yamashita, Keisuke Hara:
On the Black-Box Separation Between Ring Signatures and Public Key Encryptions. IACR Cryptol. ePrint Arch. 2023: 1319 (2023) - [i3]Sohto Chiku, Keitaro Hashimoto, Keisuke Hara, Junji Shikata:
Identity-Based Matchmaking Encryption, Revisited: Strong Security and Practical Constructions from Standard Classical and Post-Quantum Assumptions. IACR Cryptol. ePrint Arch. 2023: 1435 (2023) - 2018
- [i2]Keisuke Hara, Fuyuki Kitagawa, Takahiro Matsuda, Goichiro Hanaoka, Keisuke Tanaka:
Simulation-based Receiver Selective Opening CCA Secure PKE from Standard Computational Assumptions. IACR Cryptol. ePrint Arch. 2018: 1091 (2018) - 2013
- [i1]Keisuke Hara, Tomihisa Kamada:
A two-step model and the algorithm for recalling in recommender systems. CoRR abs/1310.6110 (2013)
Coauthor Index
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