Keisuke Hara

Publication Activity (10 Years)

Years Active: 2013-2024
Publications (10 Years): 35

Top Topics

Chosen Ciphertext

Top Venues

IACR Cryptol. ePrint Arch.

IEICE Trans. Fundam. Electron. Commun. Comput. Sci.

Int. J. Autom. Technol.

Publications

Sohto Chiku, Keisuke Hara, Junji Shikata
Chosen Ciphertext Security for (Hierarchical) Identity-Based Matchmaking Encryption. IACR Cryptol. ePrint Arch. 2024 (2024)
Kyosuke Yamashita, Keisuke Hara, Yohei Watanabe, Naoto Yanai, Junji Shikata
Designated Verifier Signature with Claimability. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 107 (3) (2024)
Keisuke Hara
A logarithmic-sized accountable ring signature scheme in the standard model. Theor. Comput. Sci. 997 (2024)
Takumi Matsuura, Keisuke Hara, Kyosuke Yamashita
Designated Verifier Signature with Repudiability. APKC@AsiaCCS (2024)
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)
Kyosuke Yamashita, Keisuke Hara
On the Black-Box Separation Between Ring Signatures and Public Key Encryptions. IACR Cryptol. ePrint Arch. 2023 (2023)
Kyosuke Yamashita, Keisuke Hara, Yohei Watanabe, Naoto Yanai, Junji Shikata
Designated Verifier Signature with Claimability. APKC@AsiaCCS (2023)
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) (2023)
Kyosuke Yamashita, Keisuke Hara
On the Black-Box Impossibility of Multi-Designated Verifiers Signature Schemes from Ring Signature Schemes. IACR Cryptol. ePrint Arch. 2023 (2023)
Sohto Chiku, Keisuke Hara, Junji Shikata
Chosen Ciphertext Security for Blind Identity-Based Encryption with Certified Identities. ISPEC (2023)
Kyohei Sudo, Masayuki Tezuka, Keisuke Hara, Yusuke Yoshida
Quantum Search-to-Decision Reduction for the LWE Problem. IACR Cryptol. ePrint Arch. 2023 (2023)
Sohto Chiku, Keisuke Hara, Junji Shikata
Identity-Based Matchmaking Encryption Secure Against Key Generation Center. ProvSec (2023)
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 (2023)
Kyohei Sudo, Masayuki Tezuka, Keisuke Hara, Yusuke Yoshida
Quantum Search-to-Decision Reduction for the LWE Problem. AFRICACRYPT (2023)
Keisuke Hara, Takahiro Matsuda, Goichiro Hanaoka, Keisuke Tanaka
Generic transformation from broadcast encryption to round-optimal deniable ring authentication. Des. Codes Cryptogr. 90 (2) (2022)
Keisuke Hara, Takahiro Matsuda, Keisuke Tanaka
Receiver Selective Opening Chosen Ciphertext Secure Identity-Based Encryption. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (3) (2022)
Yi Lu, Keisuke Hara, Keisuke Tanaka
Multikey Verifiable Homomorphic Encryption. IEEE Access 10 (2022)
Yi Lu, Keisuke Hara, Kazuma Ohara, Jacob C. N. Schuldt, Keisuke Tanaka
Efficient Two-Party Exponentiation from Quotient Transfer. ACNS (2022)
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) (2022)
Keisuke Hara, Keisuke Tanaka
Ring Signature With Unconditional Anonymity in the Plain Model. IEEE Access 9 (2021)
Kyohei Sudo, Keisuke Hara, Masayuki Tezuka, Yusuke Yoshida, Keisuke Tanaka
Watermarkable Signature with Computational Function Preserving. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (9) (2021)
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) (2021)
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) (2021)
Keisuke Hara, Takahiro Matsuda, Keisuke Tanaka
Receiver Selective Opening Chosen Ciphertext Secure Identity-Based Encryption. APKC@AsiaCCS (2021)
Keisuke Hara, Keisuke Tanaka
Tightly secure ring signatures in the standard model. Theor. Comput. Sci. 892 (2021)
Hiroki Yamamuro, Keisuke Hara, Masayuki Tezuka, Yusuke Yoshida, Keisuke Tanaka
Forward Secure Message Franking. ICISC (2021)
Yi Lu, Keisuke Hara, Keisuke Tanaka
Receiver Selective Opening CCA Secure Public Key Encryption from Various Assumptions. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (9) (2021)
Daiki Hiraga, Keisuke Hara, Masayuki Tezuka, Yusuke Yoshida, Keisuke Tanaka
Security Definitions on Time-Lock Puzzles. ICISC (2020)
Kyohei Sudo, Masayuki Tezuka, Keisuke Hara, Yusuke Yoshida, Keisuke Tanaka
Watermarkable Signature with Computational Function Preserving. ProvSec (2020)
Yi Lu, Keisuke Hara, Keisuke Tanaka
Receiver Selective Opening CCA Secure Public Key Encryption from Various Assumptions. ProvSec (2020)
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 (2019)
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) (2019)
Keisuke Hara, Fuyuki Kitagawa, Takahiro Matsuda, Goichiro Hanaoka, Keisuke Tanaka
Simulation-Based Receiver Selective Opening CCA Secure PKE from Standard Computational Assumptions. SCN (2018)
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 (2018)
Keisuke Hara, Takayuki Ito
A Scoring Rule-based Truthful Demand Response Mechanism. Int. J. Networked Distributed Comput. 4 (3) (2016)
Keisuke Hara, Takayuki Ito
A scoring rule-based truthful demand response mechanism. ICIS (2015)
Shantanu Chakraborty, Takayuki Ito, Keisuke Hara
Incentive based smart pricing scheme using scoring rule. ISGT Europe (2013)
Keisuke Hara, Takayuki Ito
A Mediation Mechanism for Automated Negotiating Agents Whose Utility Changes over Time. AAAI (2013)
Keisuke Hara, Mikoto Okumura, Takayuki Ito
A Mediator-Based Agent Negotiation Protocol for Utilities That Change with Time. IEA/AIE (2013)
Keisuke Hara, Tomihisa Kamada
A two-step model and the algorithm for recalling in recommender systems. CoRR (2013)