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Kazuma Ohara
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High-throughput semi-honest secure three-party computation with an honest majority
T Araki, J Furukawa, Y Lindell, A Nof, K Ohara
Proceedings of the 2016 ACM SIGSAC Conference on Computer and Communications …, 2016
2732016
Optimized honest-majority MPC for malicious adversaries—breaking the 1 billion-gate per second barrier
T Araki, A Barak, J Furukawa, T Lichter, Y Lindell, A Nof, K Ohara, ...
2017 IEEE Symposium on Security and Privacy (SP), 843-862, 2017
1262017
Generalizing the SPDZ compiler for other protocols
T Araki, A Barak, J Furukawa, M Keller, Y Lindell, K Ohara, H Tsuchida
Proceedings of the 2018 ACM SIGSAC Conference on Computer and Communications …, 2018
342018
Privacy-preserving smart metering with verifiability for both billing and energy management
K Ohara, Y Sakai, F Yoshida, M Iwamoto, K Ohta
Proceedings of the 2nd ACM workshop on ASIA public-key cryptography, 23-32, 2014
282014
A group signature scheme with unbounded message-dependent opening
K Ohara, Y Sakai, K Emura, G Hanaoka
Proceedings of the 8th ACM SIGSAC symposium on Information, computer and …, 2013
192013
Shortening the libert-peters-yung revocable group signature scheme by using the random oracle methodology
K Ohara, K Emura, G Hanaoka, A Ishida, K Ohta, Y Sakai
IEICE Transactions on Fundamentals of Electronics, Communications and …, 2019
162019
High-throughput secure three-party computation of kerberos ticket generation
T Araki, A Barak, J Furukawa, Y Lindell, A Nof, K Ohara
Proceedings of the 2016 ACM SIGSAC Conference on Computer and Communications …, 2016
102016
How to choose suitable secure multiparty computation using generalized SPDZ
T Araki, A Barak, J Furukawa, M Keller, K Ohara, H Tsuchida
Proceedings of the 2018 ACM SIGSAC Conference on Computer and Communications …, 2018
72018
Group signatures with message-dependent opening: Formal definitions and constructions
K Emura, G Hanaoka, Y Kawai, T Matsuda, K Ohara, K Omote, Y Sakai
Security and communication networks 2019, 2019
42019
Secure Graph Analysis at Scale
T Araki, J Furukawa, K Ohara, B Pinkas, H Rosemarin, H Tsuchida
Proceedings of the 2021 ACM SIGSAC Conference on Computer and Communications …, 2021
22021
Semantic definition of anonymity in identity-based encryption and its relation to indistinguishability-based definition
G Hanaoka, M Komatsu, K Ohara, Y Sakai, S Yamada
European Symposium on Research in Computer Security, 65-85, 2020
22020
Constant rounds almost linear complexity multi-party computation for prefix sum
K Ohara, K Ohta, K Suzuki, K Yoneyama
International Conference on Cryptology in Africa, 285-299, 2014
22014
Non-interactive Secure Multiparty Computation for Symmetric Functions, Revisited: More Efficient Constructions and Extensions
R Eriguchi, K Ohara, S Yamada, K Nuida
Annual International Cryptology Conference, 305-334, 2021
12021
How to make a secure index for searchable symmetric encryption, revisited
Y Watanabe, T Nakai, K Ohara, T Nojima, Y Liu, M Iwamoto, K Ohta
Cryptology ePrint Archive, 2021
12021
Secure computation apparatus, system, method and program
T Araki, K Ohara, J Furukawa
US Patent App. 16/759,876, 2020
12020
Multi-Party Computation for Modular Exponentiation Based on Replicated Secret Sharing
K Ohara, Y Watanabe, M Iwamoto, K Ohta
IEICE Transactions on Fundamentals of Electronics, Communications and …, 2019
12019
Information processing apparatus, secure computation method, and program
H Tsuchida, T Araki, K Ohara, T Amada
US Patent App. 17/430,507, 2022
2022
Information processing apparatus, secure computation method, and program
H Tsuchida, T Araki, K Ohara, T Amada
US Patent App. 17/429,780, 2022
2022
Systems and methods for generating and applying a secure statistical classifier
J Furukawa, J Keshet, K Ohara, T Araki, H Tsuchida, T Amada, K Kakizaki, ...
US Patent 11,315,037, 2022
2022
Efficient Dynamic Searchable Encryption with Forward Privacy under the Decent Leakage
Y Watanabe, K Ohara, M Iwamoto, K Ohta
Proceedings of the Twelveth ACM Conference on Data and Application Security …, 2022
2022
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