Tsuyoshi Takagi

383 papers A* 6A 12B 17C 43Misc 53Journal 192Unranked 51
YearRankTypeTitle / Venue / Authors
2026 J jnl
Faster CGL Hash Function via Reduced Backtracking Checks.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Shota Inoue, Yusuke Aikawa, Tsuyoshi Takagi, Hiroshi Onuki
2026 J jnl
Polynomial-Time Attacks on Two Post-Quantum Key Agreement Protocols.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Genki Akimoto, Tsuyoshi Takagi
2026 — conf
Revisiting ISD Algorithms and New Decoding Records for Large Weight Syndrome Decoding over F q.
ICISSP (2)
Takeshi Wakao, Yusuke Aikawa, Shintaro Narisada, Tsuyoshi Takagi
2025 J jnl
An Algorithm for Computing the Leading Monomials of a Minimal Groebner Basis of Generic Sequences.
CoRR
Kosuke Sakata, Tsuyoshi Takagi
2025 J jnl
Exfiltration-Resistant Proxy Re-Encryption for IoT Data Sharing in Unreliable Clouds.
IEEE Trans. Dependable Secur. Comput.
Yuyang Zhou, Liang Zhao, Fagen Li, Tsuyoshi Takagi
2025 — conf
Gram Root Decomposition over the Polynomial Ring: Application to Sphericalization of Discrete Gaussian.
ICISSP (2)
Hiroki Okada, Tsuyoshi Takagi
2025 — conf
Low Communication Threshold FHE from Standard (Module-)LWE.
ASIACRYPT (7)
Hiroki Okada, Tsuyoshi Takagi
2025 J jnl
Low Communication Threshold FHE from Standard (Module-)LWE.
IACR Cryptol. ePrint Arch.
Hiroki Okada, Tsuyoshi Takagi
2025 B conf
Lower Bounds of Costs of 3-Isogenies Formulas in the Framework of Generalized Montgomery Coordinates.
CASC
Tomoki Moriya, Hiroshi Onuki, Yusuke Aikawa, Tsuyoshi Takagi
2025 J jnl
Revisiting Cuckoo Hash-based Unbalanced Private Set Union: Leakage Analysis and Better Construction.
Int. J. Inf. Sec.
Keyang Liu, Xingxin Li, Tsuyoshi Takagi
2024 — conf
A Faster Variant of CGL Hash Function via Efficient Backtracking Checks.
ISC (2)
Shota Inoue, Yusuke Aikawa, Tsuyoshi Takagi
2024 — conf
A Transparent Zero-Knowledge Dual Membership Set Commitment based on Perfect Hash Function.
CANDAR
Keyang Liu, Tsuyoshi Takagi
2024 — conf
Consecutive Adaptor Signature Scheme: From Two-Party to N-Party Settings.
ProvSec (1)
Kaisei Kajita, Go Ohtake, Tsuyoshi Takagi
2024 J jnl
Explicit addition formulae on hyperelliptic curves of genus 2 for isogeny-based cryptography.
JSIAM Lett.
Kaito Sato, Hiroshi Onuki, Tsuyoshi Takagi
2024 J jnl
Generalized Adaptor Signature Scheme: From Two-Party to N-Party Settings.
IACR Cryptol. ePrint Arch.
Kaisei Kajita, Go Ohtake, Tsuyoshi Takagi
2024 J jnl
On the weak key of post-quantum key agreement SAA-5.
JSIAM Lett.
Genki Akimoto, Tsuyoshi Takagi
2024 — conf
Review the Cuckoo Hash-Based Unbalanced Private Set Union: Leakage, Fix, and Optimization.
ESORICS (2)
Keyang Liu, Xingxin Li, Tsuyoshi Takagi
2024 — conf
Revisiting the Security of Fiat-Shamir Signature Schemes Under Superposition Attacks.
ACISP (2)
Quan Yuan, Chao Sun, Tsuyoshi Takagi
2024 J jnl
Revisiting the Security of Fiat-Shamir Signature Schemes under Superposition Attacks.
IACR Cryptol. ePrint Arch.
Quan Yuan, Chao Sun, Tsuyoshi Takagi
2024 Misc conf
Sieving Method for SDP with the Zero Window: An Improvement in Low Memory Environments.
IWSEC
Naoki Yoshiguchi, Yusuke Aikawa, Tsuyoshi Takagi
2024 J jnl
Simulation-Secure Threshold PKE from Standard (Ring-)LWE.
IACR Cryptol. ePrint Arch.
Hiroki Okada, Tsuyoshi Takagi
2024 — conf
Tightly Secure Identity-Based Signature from Cryptographic Group Actions.
ProvSec (1)
Thanh Xuan Khuc, Willy Susilo, Dung Hoang Duong, Fuchun Guo, Hyungrok Jo, Tsuyoshi Takagi
2023 J jnl
An Efficient Algorithm for Solving the MQ Problem using Hilbert Series.
IACR Cryptol. ePrint Arch.
Kosuke Sakata, Tsuyoshi Takagi
2023 J jnl
Correction to: Efficient Search for Superspecial Hyperelliptic Curves of Genus Four with Automorphism Group Containing bfC
Math. Comput. Sci.
Momonari Kudo, Tasuku Nakagawa, Tsuyoshi Takagi
2023 J jnl
Efficient Search for Superspecial Hyperelliptic Curves of Genus Four with Automorphism Group Containing bfC
Math. Comput. Sci.
Momonari Kudo, Tasuku Nakagawa, Tsuyoshi Takagi
2023 C conf
Fast Enumeration Algorithm for Multivariate Polynomials over General Finite Fields.
PQCrypto
Hiroki Furue, Tsuyoshi Takagi
2023 J jnl
Fast Enumeration Algorithm for Multivariate Polynomials over General Finite Fields.
IACR Cryptol. ePrint Arch.
Hiroki Furue, Tsuyoshi Takagi
2023 J jnl
How to construct CSIDH on Edwards curves.
Finite Fields Their Appl.
Tomoki Moriya, Hiroshi Onuki, Tsuyoshi Takagi
2023 Misc conf
Improved Hybrid Attack via Error-Splitting Method for Finding Quinary Short Lattice Vectors.
IWSEC
Haiming Zhu, Shoichi Kamada, Momonari Kudo, Tsuyoshi Takagi
2023 J jnl
Improvement of the square-root Vélu's formulas for isogeny-based cryptography.
JSIAM Lett.
Saki Otsuki, Hiroshi Onuki, Tsuyoshi Takagi
2023 J jnl
L1-norm ball for CSIDH: Optimal strategy for choosing the secret key space.
Discret. Appl. Math.
Kohei Nakagawa, Hiroshi Onuki, Atsushi Takayasu, Tsuyoshi Takagi
2023 J jnl
Lower bound of costs of formulas to compute image curves of 3-isogenies in the framework of generalized Montgomery coordinates.
IACR Cryptol. ePrint Arch.
Tomoki Moriya, Hiroshi Onuki, Yusuke Aikawa, Tsuyoshi Takagi
2023 Misc conf
Memory-Efficient Quantum Information Set Decoding Algorithm.
ACISP
Naoto Kimura, Atsushi Takayasu, Tsuyoshi Takagi
2023 J jnl
Recent progress in the security evaluation of multivariate public-key cryptography.
IET Inf. Secur.
Yasuhiko Ikematsu, Shuhei Nakamura, Tsuyoshi Takagi
2023 C conf
Robust Property-Preserving Hash Meets Homomorphism.
ISC
Keyang Liu, Xingxin Li, Tsuyoshi Takagi
2023 J jnl
Short Lattice Signature Scheme with Tighter Reduction under Ring-SIS Assumption.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Kaisei Kajita, Go Ohtake, Kazuto Ogawa, Koji Nuida, Tsuyoshi Takagi
2023 — conf
Spherical Gaussian Leftover Hash Lemma via the Rényi Divergence.
ACNS (1)
Hiroki Okada, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2023 J jnl
Spherical Gaussian Leftover Hash Lemma via the Rényi Divergence.
IACR Cryptol. ePrint Arch.
Hiroki Okada, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2022 C conf
A New Fault Attack on UOV Multivariate Signature Scheme.
PQCrypto
Hiroki Furue, Yutaro Kiyomura, Tatsuya Nagasawa, Tsuyoshi Takagi
2022 C conf
Efficient Word Size Modular Multiplication over Signed Integers.
ARITH
Daichi Aoki, Kazuhiko Minematsu, Toshihiko Okamura, Tsuyoshi Takagi
2022 J jnl
Erratum: A Compact Digital Signature Scheme Based on the Module-LWR Problem [IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences Vol. E104.A (2021), No. 9 pp.1219-1234].
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2022 J jnl
Explicit construction of the square-root Vélu's formula on Edwards curves.
JSIAM Lett.
Shu Takahashi, Hiroshi Onuki, Tsuyoshi Takagi
2022 Misc conf
Improving Fault Attacks on Rainbow with Fixing Random Vinegar Values.
IWSEC
Taku Kato, Yutaro Kiyomura, Tsuyoshi Takagi
2022 J jnl
Revisiting the Orthogonal Lattice Algorithm in Solving General Approximate Common Divisor Problem.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Xiaoling Yu, Yuntao Wang, Chungen Xu, Tsuyoshi Takagi
2022 J jnl
Short Lattice Signature Scheme with Tighter Reduction under Ring-SIS Assumption.
IACR Cryptol. ePrint Arch.
Kaisei Kajita, Go Ohtake, Kazuto Ogawa, Koji Nuida, Tsuyoshi Takagi
2022 J jnl
The Generalized Montgomery Coordinate: A New Computational Tool for Isogeny-based Cryptography.
IACR Cryptol. ePrint Arch.
Tomoki Moriya, Hiroshi Onuki, Yusuke Aikawa, Tsuyoshi Takagi
2021 Misc conf
(Short Paper) Simple Matrix Signature Scheme.
IWSEC
Changze Yin, Yacheng Wang, Tsuyoshi Takagi
2021 J jnl
A Compact Digital Signature Scheme Based on the Module-LWR Problem.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2021 J jnl
A Compact Digital Signature Scheme Based on the Module-LWR problem.
IACR Cryptol. ePrint Arch.
Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2021 — conf
A New Variant of Unbalanced Oil and Vinegar Using Quotient Ring: QR-UOV.
ASIACRYPT (4)
Hiroki Furue, Yasuhiko Ikematsu, Yutaro Kiyomura, Tsuyoshi Takagi
2021 C conf
Improving Thomae-Wolf Algorithm for Solving Underdetermined Multivariate Quadratic Polynomial Problem.
PQCrypto
Hiroki Furue, Shuhei Nakamura, Tsuyoshi Takagi
2021 J jnl
Memory-constrained implementation of lattice-based encryption scheme on standard Java Card platform.
IET Inf. Secur.
Ye Yuan, Kazuhide Fukushima, Junting Xiao, Shinsaku Kiyomoto, Tsuyoshi Takagi
2021 J jnl
New complexity estimation on the Rainbow-Band-Separation attack.
Theor. Comput. Sci.
Shuhei Nakamura, Yasuhiko Ikematsu, Yacheng Wang, Jintai Ding, Tsuyoshi Takagi
2021 Misc conf
Shortest Vectors in Lattices of Bai-Galbraith's Embedding Attack on the LWR Problem.
IWSEC
Shusaku Uemura, Kazuhide Fukushima, Shinsaku Kiyomoto, Momonari Kudo, Tsuyoshi Takagi
2021 J jnl
Studying lattice reduction algorithms improved by quick reordering technique.
Int. J. Inf. Sec.
Yuntao Wang, Tsuyoshi Takagi
2020 C conf
A Compact Digital Signature Scheme Based on the Module-LWR Problem.
ICICS
Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2020 J jnl
A Constant-Time Algorithm of CSIDH Keeping Two Points.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Hiroshi Onuki, Yusuke Aikawa, Tsutomu Yamazaki, Tsuyoshi Takagi
2020 J jnl
A New Variant of Unbalanced Oil and Vinegar Using Quotient Ring: QR-UOV.
IACR Cryptol. ePrint Arch.
Hiroki Furue, Yasuhiko Ikematsu, Yutaro Kiyomura, Tsuyoshi Takagi
2020 C conf
A Structural Attack on Block-Anti-Circulant UOV at SAC 2019.
PQCrypto
Hiroki Furue, Koha Kinjo, Yasuhiko Ikematsu, Yacheng Wang, Tsuyoshi Takagi
2020 J jnl
An Efficient Authenticated Key Exchange from Random Self-Reducibility on CSIDH.
IACR Cryptol. ePrint Arch.
Tomoki Kawashima, Katsuyuki Takashima, Yusuke Aikawa, Tsuyoshi Takagi
2020 Misc conf
An Efficient Authenticated Key Exchange from Random Self-reducibility on CSIDH.
ICISC
Tomoki Kawashima, Katsuyuki Takashima, Yusuke Aikawa, Tsuyoshi Takagi
2020 J jnl
An Efficient MQ-based Signature with Tight Security Proof.
Int. J. Netw. Comput.
Hiroki Furue, Dung Hoang Duong, Tsuyoshi Takagi
2020 — conf
Cryptanalysis of GiophantusTM Schemes against Hybrid Attack.
APKC@AsiaCCS
Yuntao Wang, Yasuhiko Ikematsu, Koichiro Akiyama, Tsuyoshi Takagi
2020 B conf
How to Construct CSIDH on Edwards Curves.
CT-RSA
Tomoki Moriya, Hiroshi Onuki, Tsuyoshi Takagi
2020 Misc conf
Improving Key Mismatch Attack on NewHope with Fewer Queries.
ACISP
Satoshi Okada, Yuntao Wang, Tsuyoshi Takagi
2020 J jnl
Improving Key Mismatch Attack on NewHope with Fewer Queries.
IACR Cryptol. ePrint Arch.
Satoshi Okada, Yuntao Wang, Tsuyoshi Takagi
2020 J jnl
L
IACR Cryptol. ePrint Arch.
Kohei Nakagawa, Hiroshi Onuki, Atsushi Takayasu, Tsuyoshi Takagi
2020 C conf
Multivariate Encryption Schemes Based on Polynomial Equations over Real Numbers.
PQCrypto
Takanori Yasuda, Yacheng Wang, Tsuyoshi Takagi
2020 J jnl
New Complexity Estimation on the Rainbow-Band-Separation Attack.
IACR Cryptol. ePrint Arch.
Shuhei Nakamura, Yasuhiko Ikematsu, Yacheng Wang, Jintai Ding, Tsuyoshi Takagi
2020 Misc conf
On Collisions Related to an Ideal Class of Order 3 in CSIDH.
IWSEC
Hiroshi Onuki, Tsuyoshi Takagi
2020 J jnl
On the Complexity of the LWR-Solving BKW Algorithm.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2020 Misc conf
Revisiting the Minrank Problem on Multivariate Cryptography.
WISA
Yacheng Wang, Yasuhiko Ikematsu, Shuhei Nakamura, Tsuyoshi Takagi
2020 C conf
Short Lattice Signatures in the Standard Model with Efficient Tag Generation.
ProvSec
Kaisei Kajita, Kazuto Ogawa, Koji Nuida, Tsuyoshi Takagi
2020 — conf
SiGamal: A Supersingular Isogeny-Based PKE and Its Application to a PRF.
ASIACRYPT (2)
Tomoki Moriya, Hiroshi Onuki, Tsuyoshi Takagi
2020 J jnl
SiGamal: A supersingular isogeny-based PKE and its application to a PRF.
IACR Cryptol. ePrint Arch.
Tomoki Moriya, Hiroshi Onuki, Tsuyoshi Takagi
2020 C conf
The Existence of Cycles in the Supersingular Isogeny Graphs Used in SIKE.
ISITA
Hiroshi Onuki, Yusuke Aikawa, Tsuyoshi Takagi
2020 J jnl
The Existence of Cycles in the Supersingular Isogeny Graphs Used in SIKE.
IACR Cryptol. ePrint Arch.
Hiroshi Onuki, Yusuke Aikawa, Tsuyoshi Takagi
2019 Misc conf
(Short Paper) A Faster Constant-Time Algorithm of CSIDH Keeping Two Points.
IWSEC
Hiroshi Onuki, Yusuke Aikawa, Tsutomu Yamazaki, Tsuyoshi Takagi
2019 J jnl
A Faster Constant-time Algorithm of CSIDH keeping Two Torsion Points.
IACR Cryptol. ePrint Arch.
Hiroshi Onuki, Yusuke Aikawa, Tsutomu Yamazaki, Tsuyoshi Takagi
2019 — conf
An Efficient MQ-Based Signature in the QROM.
CANDAR
Hiroki Furue, Dung Hoang Duong, Tsuyoshi Takagi
2019 J jnl
Batten Down the Hatches: Securing Neighborhood Area Networks of Smart Grid in the Quantum Era.
IEEE Trans. Smart Grid
Chi Cheng, Yue Qin, Rongxing Lu, Tao Jiang, Tsuyoshi Takagi
2019 J jnl
Chosen Message Attack on Multivariate Signature ELSA at Asiacrypt 2017.
J. Inf. Process.
Yasufumi Hashimoto, Yasuhiko Ikematsu, Tsuyoshi Takagi
2019 J jnl
Explicit Relation between Low-Dimensional LLL-Reduced Bases and Shortest Vectors.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Kotaro Matsuda, Atsushi Takayasu, Tsuyoshi Takagi
2019 Misc conf
Group Key Exchange from CSIDH and Its Application to Trusted Setup in Supersingular Isogeny Cryptosystems.
Inscrypt
Tomoki Moriya, Katsuyuki Takashima, Tsuyoshi Takagi
2019 J jnl
How to Construct CSIDH on Edwards Curves.
IACR Cryptol. ePrint Arch.
Tomoki Moriya, Hiroshi Onuki, Tsuyoshi Takagi
2019 J jnl
LLL and stochastic sandpile models.
IACR Cryptol. ePrint Arch.
Jintai Ding, Seungki Kim, Tsuyoshi Takagi, Yuntao Wang
2019 J jnl
On collisions related to an ideal class of order 3 in CSIDH.
IACR Cryptol. ePrint Arch.
Hiroshi Onuki, Tsuyoshi Takagi
2019 B conf
One Sample Ring-LWE with Rounding and Its Application to Key Exchange.
ACNS
Jintai Ding, Xinwei Gao, Tsuyoshi Takagi, Yuntao Wang
2019 C conf
Security Analysis and Efficient Implementation of Code-based Signature Schemes.
ICISSP
Partha Sarathi Roy, Kirill Morozov, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2019 J jnl
The Secure Parameters and Efficient Decryption Algorithm for Multivariate Public Key Cryptosystem EFC.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yacheng Wang, Yasuhiko Ikematsu, Dung Hoang Duong, Tsuyoshi Takagi
2019 B conf
Tight Reductions for Diffie-Hellman Variants in the Algebraic Group Model.
CT-RSA
Taiga Mizuide, Atsushi Takayasu, Tsuyoshi Takagi
2018 J jnl
An Efficient Key Generation of ZHFE Public Key Cryptosystem.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yasuhiko Ikematsu, Dung Hoang Duong, Albrecht Petzoldt, Tsuyoshi Takagi
2018 C conf
An Improvement on the Linear Algebraic Attack for the Indeterminate Equation Encryption Scheme.
ISITA
Yasuhiko Ikematsu, Koichiro Akiyama, Tsuyoshi Takagi
2018 Misc conf
Chosen Message Attack on Multivariate Signature ELSA at Asiacrypt 2017.
IWSEC
Yasufumi Hashimoto, Yasuhiko Ikematsu, Tsuyoshi Takagi
2018 J jnl
Chosen Message Attack on Multivariate Signature ELSA at Asiacrypt 2017.
IACR Cryptol. ePrint Arch.
Yasufumi Hashimoto, Yasuhiko Ikematsu, Tsuyoshi Takagi
2018 Misc conf
Efficient Decryption Algorithms for Extension Field Cancellation Type Encryption Schemes.
ACISP
Yacheng Wang, Yasuhiko Ikematsu, Dung Hoang Duong, Tsuyoshi Takagi
2018 Misc conf
Estimated Cost for Solving Generalized Learning with Errors Problem via Embedding Techniques.
IWSEC
Weiyao Wang, Yuntao Wang, Atsushi Takayasu, Tsuyoshi Takagi
2018 — ed.
Frontiers in Cyber Security - First International Conference, FCS 2018, Chengdu, China, November 5-7, 2018, Proceedings
FCS
Fagen Li, Tsuyoshi Takagi, Chunxiang Xu, Xiaosong Zhang
2018 C conf
HFERP - A New Multivariate Encryption Scheme.
PQCrypto
Yasuhiko Ikematsu, Ray A. Perlner, Daniel Smith-Tone, Tsuyoshi Takagi, Jeremy Vates
2018 J jnl
Hardness Evaluation for Search LWE Problem Using Progressive BKZ Simulator.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yuntao Wang, Yoshinori Aono, Tsuyoshi Takagi
2018 Misc conf
Improving the BKZ Reduction Algorithm by Quick Reordering Technique.
ACISP
Yuntao Wang, Tsuyoshi Takagi
2018 J jnl
Memory-Constrained Implementation of Lattice-based Encryption Scheme on the Standard Java Card Platform.
IACR Cryptol. ePrint Arch.
Ye Yuan, Kazuhide Fukushima, Junting Xiao, Shinsaku Kiyomoto, Tsuyoshi Takagi
2018 Misc conf
On the Complexity of the LWR-Solving BKW Algorithm.
ICISC
Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2018 J jnl
Portable Implementation of Postquantum Encryption Schemes and Key Exchange Protocols on JavaScript-Enabled Platforms.
Secur. Commun. Networks
Ye Yuan, Junting Xiao, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2018 J jnl
Recent Developments in Post-Quantum Cryptography.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Tsuyoshi Takagi
2018 J jnl
Tight Reductions for Diffie-Hellman Variants in the Algebraic Group Model.
IACR Cryptol. ePrint Arch.
Taiga Mizuide, Atsushi Takayasu, Tsuyoshi Takagi
2018 J jnl
Why 1.02? The root Hermite factor of LLL and stochastic sandpile models.
CoRR
Jintai Ding, Seungki Kim, Tsuyoshi Takagi, Yuntao Wang
2017 Misc conf
A Public-Key Encryption Scheme Based on Non-linear Indeterminate Equations.
SAC
Koichiro Akiyama, Yasuhiro Goto, Shinya Okumura, Tsuyoshi Takagi, Koji Nuida, Goichiro Hanaoka
2017 J jnl
A Public-key Encryption Scheme Based on Non-linear Indeterminate Equations (Giophantus).
IACR Cryptol. ePrint Arch.
Koichiro Akiyama, Yasuhiro Goto, Shinya Okumura, Tsuyoshi Takagi, Koji Nuida, Goichiro Hanaoka, Hideo Shimizu, Yasuhiko Ikematsu
2017 — ed.
Advances in Cryptology - ASIACRYPT 2017 - 23rd International Conference on the Theory and Applications of Cryptology and Information Security, Hong Kong, China, December 3-7, 2017, Proceedings, Part I
ASIACRYPT (1)
Tsuyoshi Takagi, Thomas Peyrin
2017 — ed.
Advances in Cryptology - ASIACRYPT 2017 - 23rd International Conference on the Theory and Applications of Cryptology and Information Security, Hong Kong, China, December 3-7, 2017, Proceedings, Part II
ASIACRYPT (2)
Tsuyoshi Takagi, Thomas Peyrin
2017 — ed.
Advances in Cryptology - ASIACRYPT 2017 - 23rd International Conference on the Theory and Applications of Cryptology and Information Security, Hong Kong, China, December 3-7, 2017, Proceedings, Part III
ASIACRYPT (3)
Tsuyoshi Takagi, Thomas Peyrin
2017 C conf
An Experimental Study of Kannan's Embedding Technique for the Search LWE Problem.
ICICS
Yuntao Wang, Yoshinori Aono, Tsuyoshi Takagi
2017 B conf
An Experimental Study of the BDD Approach for the Search LWE Problem.
ACNS
Rui Xu, Sze Ling Yeo, Kazuhide Fukushima, Tsuyoshi Takagi, Hwajung Seo, Shinsaku Kiyomoto, Matt Henricksen
2017 C conf
Choosing Parameters for the Subfield Lattice Attack Against Overstretched NTRU.
ISC
Dung Hoang Duong, Masaya Yasuda, Tsuyoshi Takagi
2017 J jnl
Choosing Parameters for the Subfield Lattice Attack against overstretched NTRU.
IACR Cryptol. ePrint Arch.
Dung Hoang Duong, Masaya Yasuda, Tsuyoshi Takagi
2017 J jnl
Constructing an efficient hash function from $3$-isogenies.
JSIAM Lett.
Hikari Tachibana, Katsuyuki Takashima, Tsuyoshi Takagi
2017 J jnl
CyclicSRP - A Multivariate Encryption Scheme with a Partially Cyclic Public Key.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Dung Hoang Duong, Albrecht Petzoldt, Tsuyoshi Takagi
2017 J jnl
Efficient outsourcing of secure k-nearest neighbour query over encrypted database.
Comput. Secur.
Rui Xu, Kirill Morozov, Yanjiang Yang, Jianying Zhou, Tsuyoshi Takagi
2017 J jnl
Full Cryptanalysis of Hash Functions Based on Cubic Ramanujan Graphs.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Hyungrok Jo, Christophe Petit, Tsuyoshi Takagi
2017 — ch.
Introduction to CREST Crypto-Math Project.
CREST Crypto-Math Project
Tsuyoshi Takagi
2017 — book
Mathematical Modelling for Next-Generation Cryptography: CREST Crypto-Math Project
CREST Crypto-Math Project
Tsuyoshi Takagi, Masato Wakayama, Keisuke Tanaka, Noboru Kunihiro, Kazufumi Kimoto, Dung Hoang Duong
2017 — conf
Memory-constrained implementation of lattice-based encryption scheme on standard Java Card.
HOST
Ye Yuan, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2017 C ed.
Post-Quantum Cryptography - 8th International Workshop, PQCrypto 2017, Utrecht, The Netherlands, June 26-28, 2017, Proceedings
PQCrypto
Tanja Lange, Tsuyoshi Takagi
2017 — conf
Revisiting the Efficient Key Generation of ZHFE.
C2SI
Yasuhiko Ikematsu, Dung Hoang Duong, Albrecht Petzoldt, Tsuyoshi Takagi
2017 J jnl
Secret Sharing with Cheaters Using Multi-Receiver Authentication.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Rui Xu, Kirill Morozov, Tsuyoshi Takagi
2017 B conf
Secure and Efficient Pairing at 256-Bit Security Level.
ACNS
Yutaro Kiyomura, Akiko Inoue, Yuto Kawahara, Masaya Yasuda, Tsuyoshi Takagi, Tetsutaro Kobayashi
2017 J jnl
Securing the Internet of Things in a Quantum World.
IEEE Commun. Mag.
Chi Cheng, Rongxing Lu, Albrecht Petzoldt, Tsuyoshi Takagi
2017 Misc conf
The Beauty and the Beasts - The Hard Cases in LLL Reduction.
IWSEC
Saed Alsayigh, Jintai Ding, Tsuyoshi Takagi, Yuntao Wang
2016 — ed.
Advances in Cryptology - ASIACRYPT 2016 - 22nd International Conference on the Theory and Application of Cryptology and Information Security, Hanoi, Vietnam, December 4-8, 2016, Proceedings, Part I
ASIACRYPT (1)
Jung Hee Cheon, Tsuyoshi Takagi
2016 — ed.
Advances in Cryptology - ASIACRYPT 2016 - 22nd International Conference on the Theory and Application of Cryptology and Information Security, Hanoi, Vietnam, December 4-8, 2016, Proceedings, Part II
ASIACRYPT (2)
Jung Hee Cheon, Tsuyoshi Takagi
2016 — conf
An Estimate of the Complexity of the Section Finding Problem on Algebraic Surfaces.
CANDAR
Shinya Okumura, Koichiro Akiyama, Tsuyoshi Takagi
2016 Misc conf
Cryptanalysis of a Public Key Cryptosystem Based on Diophantine Equations via Weighted LLL Reduction.
IWSEC
Jintai Ding, Momonari Kudo, Shinya Okumura, Tsuyoshi Takagi, Chengdong Tao
2016 J jnl
Efficient Deniably Authenticated Encryption and Its Application to E-Mail.
IEEE Trans. Inf. Forensics Secur.
Fagen Li, Di Zhong, Tsuyoshi Takagi
2016 — conf
Image Sensor with Organic Photoconductive Films by Stacking Red/Green and Blue Components.
IMSE
Tsuyoshi Takagi, Hwajung Seo, Toshikatsu Sakai, Hiroshi Ohtake, Mamoru Furuta
2016 — conf
Improved Progressive BKZ Algorithms and Their Precise Cost Estimation by Sharp Simulator.
EUROCRYPT (1)
Yoshinori Aono, Yuntao Wang, Takuya Hayashi, Tsuyoshi Takagi
2016 J jnl
Improved Progressive BKZ Algorithms and their Precise Cost Estimation by Sharp Simulator.
IACR Cryptol. ePrint Arch.
Yoshinori Aono, Yuntao Wang, Takuya Hayashi, Tsuyoshi Takagi
2016 J jnl
On tameness of Matsumoto-Imai central maps in three variables over the finite field 픽
Adv. Math. Commun.
Keisuke Hakuta, Hisayoshi Sato, Tsuyoshi Takagi
2016 J jnl
Portable Implementation of Lattice-based Cryptography using JavaScript.
Int. J. Netw. Comput.
Ye Yuan, Chen-Mou Cheng, Shinsaku Kiyomoto, Yutaka Miyake, Tsuyoshi Takagi
2016 C ed.
Post-Quantum Cryptography - 7th International Workshop, PQCrypto 2016, Fukuoka, Japan, February 24-26, 2016, Proceedings
PQCrypto
Tsuyoshi Takagi
2016 — conf
Privacy-Preserving k-Nearest Neighbour Query on Outsourced Database.
ACISP (1)
Rui Xu, Kirill Morozov, Yanjiang Yang, Jianying Zhou, Tsuyoshi Takagi
2016 J jnl
Reducing the Key Size of the SRP Encryption Scheme - Extended version.
IACR Cryptol. ePrint Arch.
Dung Hoang Duong, Albrecht Petzoldt, Tsuyoshi Takagi
2016 — conf
Reducing the Key Size of the SRP Encryption Scheme.
ACISP (2)
Dung Hoang Duong, Albrecht Petzoldt, Tsuyoshi Takagi
2016 Misc conf
Revisiting the Cubic UOV Signature Scheme.
ICISC
Dung Hoang Duong, Albrecht Petzoldt, Yacheng Wang, Tsuyoshi Takagi
2016 J jnl
Revisiting the Cubic UOV Signature Scheme.
IACR Cryptol. ePrint Arch.
Dung Hoang Duong, Albrecht Petzoldt, Yacheng Wang, Tsuyoshi Takagi
2016 J jnl
Revisiting the Efficient Key Generation of ZHFE.
IACR Cryptol. ePrint Arch.
Yasuhiko Ikematsu, Dung Hoang Duong, Albrecht Petzoldt, Tsuyoshi Takagi
2016 J jnl
Revocable and strongly unforgeable identity-based signature scheme in the standard model.
Secur. Commun. Networks
Zhenhua Liu, Xiangsong Zhang, Yupu Hu, Tsuyoshi Takagi
2016 J jnl
Secure and controllable k-NN query over encrypted cloud data with key confidentiality.
J. Parallel Distributed Comput.
Youwen Zhu, Zhiqiu Huang, Tsuyoshi Takagi
2016 J jnl
Security Analysis and Improvements on Two Homomorphic Authentication Schemes for Network Coding.
IEEE Trans. Inf. Forensics Secur.
Chi Cheng, Jemin Lee, Tao Jiang, Tsuyoshi Takagi
2016 J jnl
Special issue on provable security.
Secur. Commun. Networks
Shaoquan Jiang, Tsuyoshi Takagi, Guilin Wang
2015 J jnl
A construction of 3-dimensional lattice sieve for number field sieve over F_{p^n}.
IACR Cryptol. ePrint Arch.
Kenichiro Hayasaka, Kazumaro Aoki, Tetsutaro Kobayashi, Tsuyoshi Takagi
2015 J jnl
A multivariate quadratic challenge toward post-quantum generation cryptography.
ACM Commun. Comput. Algebra
Takanori Yasuda, Xavier Dahan, Yun-Ju Huang, Tsuyoshi Takagi, Kouichi Sakurai
2015 — conf
Constructing Pairing-Friendly Elliptic Curves Using Global Number Fields.
CANDAR
Takanori Yasuda, Tsuyoshi Takagi, Kouichi Sakurai
2015 J jnl
Cryptanalysis of a public key cryptosystem based on Diophantine equations via weighted LLL reduction.
IACR Cryptol. ePrint Arch.
Jintai Ding, Momonari Kudo, Shinya Okumura, Tsuyoshi Takagi, Chengdong Tao
2015 J jnl
Efficient scalar product protocol and its privacy-preserving application.
Int. J. Electron. Secur. Digit. Forensics
Youwen Zhu, Tsuyoshi Takagi
2015 J jnl
Functional Encryption Resilient to Hard-to-Invert Leakage.
Comput. J.
Mingwu Zhang, Chunzhi Wang, Tsuyoshi Takagi, Yi Mu
2015 J jnl
MQ Challenge: Hardness Evaluation of Solving Multivariate Quadratic Problems.
IACR Cryptol. ePrint Arch.
Takanori Yasuda, Xavier Dahan, Yun-Ju Huang, Tsuyoshi Takagi, Kouichi Sakurai
2015 J jnl
Note on Some Recent Cheater Identifiable Secret Sharing Schemes.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Rui Xu, Kirill Morozov, Tsuyoshi Takagi
2015 J jnl
On Generalized First Fall Degree Assumptions.
IACR Cryptol. ePrint Arch.
Yun-Ju Huang, Christophe Petit, Naoyuki Shinohara, Tsuyoshi Takagi
2015 J jnl
On the Security of A Privacy-Preserving Product Calculation Scheme.
IEEE Trans. Dependable Secur. Comput.
Youwen Zhu, Zhiqiu Huang, Liusheng Huang, Tsuyoshi Takagi
2015 — conf
Portable Implementation of Lattice-Based Cryptography Using JavaScript.
CANDAR
Ye Yuan, Chen-Mou Cheng, Shinsaku Kiyomoto, Yutaka Miyake, Tsuyoshi Takagi
2015 J jnl
Revocable Identity-based Signcryption Scheme Without Random Oracles.
Int. J. Netw. Secur.
Xiangsong Zhang, Zhenhua Liu, Yupu Hu, Tsuyoshi Takagi
2015 J jnl
Security Analysis of Cryptosystems Using Short Generators over Ideal Lattices.
IACR Cryptol. ePrint Arch.
Shinya Okumura, Shingo Sugiyama, Masaya Yasuda, Tsuyoshi Takagi
2015 J jnl
Zero-Knowledge Protocols for Code-Based Public-Key Encryption.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Rong Hu, Kirill Morozov, Tsuyoshi Takagi
2014 C conf
A Polynomial-Time Algorithm for Solving a Class of Underdetermined Multivariate Quadratic Equations over Fields of Odd Characteristics.
PQCrypto
Chen-Mou Cheng, Yasufumi Hashimoto, Hiroyuki Miura, Tsuyoshi Takagi
2014 J jnl
An experiment of number field sieve for discrete logarithm problem over $\text{GF}(p^n)$.
JSIAM Lett.
Kenichiro Hayasaka, Kazumaro Aoki, Tetsutaro Kobayashi, Tsuyoshi Takagi
2014 J jnl
Anonymous encryption with partial-order subset delegation and its application in privacy email systems.
IET Inf. Secur.
Mingwu Zhang, Takashi Nishide, Bo Yang, Tsuyoshi Takagi
2014 J jnl
Anonymous spatial encryption under affine space delegation functionality with full security.
Inf. Sci.
Mingwu Zhang, Bo Yang, Tsuyoshi Takagi
2014 Misc conf
Cheater Identifiable Secret Sharing Schemes via Multi-Receiver Authentication.
IWSEC
Rui Xu, Kirill Morozov, Tsuyoshi Takagi
2014 J jnl
Collaborative agglomerative document clustering with limited information disclosure.
Secur. Commun. Networks
Chunhua Su, Jianying Zhou, Feng Bao, Tsuyoshi Takagi, Kouichi Sakurai
2014 J jnl
Efficient Algorithm for Tate Pairing of Composite Order.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yutaro Kiyomura, Tsuyoshi Takagi
2014 J jnl
Efficient Privacy-Preserving Reputation Evaluation in Decentralized Environments.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Youwen Zhu, Tsuyoshi Takagi
2014 — conf
Efficient Variant of Rainbow without Triangular Matrix Representation.
ICT-EurAsia
Takanori Yasuda, Tsuyoshi Takagi, Kouichi Sakurai
2014 J jnl
Efficient system parameters for Identity-Based Encryption using supersingular elliptic curves.
JSIAM Lett.
Takumi Tomita, Tsuyoshi Takagi
2014 J jnl
Efficient variant of Rainbow using sparse secret keys.
J. Wirel. Mob. Networks Ubiquitous Comput. Dependable Appl.
Takanori Yasuda, Tsuyoshi Takagi, Kouichi Sakurai
2014 J jnl
Extended Algorithm for Solving Underdefined Multivariate Quadratic Equations.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Hiroyuki Miura, Yasufumi Hashimoto, Tsuyoshi Takagi
2014 J jnl
Fully secure constructions of spatial encryption with vector privacy.
Int. J. Commun. Syst.
Mingwu Zhang, Chunzhi Wang, Bo Yang, Tsuyoshi Takagi
2014 J jnl
Heuristic counting of Kachisa-Schaefer-Scott curves.
JSIAM Lett.
Yutaro Kiyomura, Noriyasu Iwamoto, Shun'ichi Yokoyama, Kenichiro Hayasaka, Yuntao Wang, Takanori Yasuda, Katsuyuki Takashima, Tsuyoshi Takagi
2014 J jnl
Improved Attacks on Multi-Prime RSA with Small Prime Difference.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Hui Zhang, Tsuyoshi Takagi
2014 J jnl
Key Length Estimation of Pairing-Based Cryptosystems Using
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Naoyuki Shinohara, Takeshi Shimoyama, Takuya Hayashi, Tsuyoshi Takagi
2014 — conf
Parallel Gauss Sieve Algorithm: Solving the SVP Challenge over a 128-Dimensional Ideal Lattice.
Public Key Cryptography
Tsukasa Ishiguro, Shinsaku Kiyomoto, Yutaka Miyake, Tsuyoshi Takagi
2014 J jnl
Security Analysis of Collusion-Resistant Nearest Neighbor Query Scheme on Encrypted Cloud Data.
IEICE Trans. Inf. Syst.
Youwen Zhu, Tsuyoshi Takagi, Rong Hu
2014 J jnl
Security of Multivariate Signature Scheme Using Non-commutative Rings.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Takanori Yasuda, Tsuyoshi Takagi, Kouichi Sakurai
2014 J jnl
Some properties of $τ$-adic expansions on hyperelliptic Koblitz curves.
CoRR
Keisuke Hakuta, Hisayoshi Sato, Tsuyoshi Takagi
2014 J jnl
Unbounded anonymous hierarchical IBE with continual-key-leakage tolerance.
Secur. Commun. Networks
Mingwu Zhang, Bo Yang, Chunzhi Wang, Tsuyoshi Takagi
2013 — conf
A variant of rainbow with shorter secret key and faster signature generation.
AsiaPKC@AsiaCCS
Takanori Yasuda, Jintai Ding, Tsuyoshi Takagi, Kouichi Sakurai
2013 — conf
An Experiment of Number Field Sieve for Discrete Logarithm Problem over GF(p 12).
Number Theory and Cryptography
Kenichiro Hayasaka, Kazumaro Aoki, Tetsutaro Kobayashi, Tsuyoshi Takagi
2013 Misc conf
Attacks on Multi-Prime RSA with Small Prime Difference.
ACISP
Hui Zhang, Tsuyoshi Takagi
2013 J jnl
Bounded Leakage-Resilient Functional Encryption with Hidden Vector Predicate.
Comput. J.
Mingwu Zhang, Bo Yang, Tsuyoshi Takagi
2013 J jnl
Certificateless hybrid signcryption.
Math. Comput. Model.
Fagen Li, Masaaki Shirase, Tsuyoshi Takagi
2013 J jnl
Cryptanalysis and Improvement of Robust Deniable Authentication Protocol.
Wirel. Pers. Commun.
Fagen Li, Tsuyoshi Takagi
2013 Misc conf
Efficient Algorithm for Tate Pairing of Composite Order.
IWSEC
Yutaro Kiyomura, Tsuyoshi Takagi
2013 J jnl
Efficient Constructions of Anonymous Multireceiver Encryption Protocol and Their Deployment in Group E-mail Systems With Privacy Preservation.
IEEE Syst. J.
Mingwu Zhang, Tsuyoshi Takagi
2013 J jnl
Efficient Signcryption for Heterogeneous Systems.
IEEE Syst. J.
Fagen Li, Hui Zhang, Tsuyoshi Takagi
2013 J jnl
Efficient and adaptively secure broadcast encryption systems.
Secur. Commun. Networks
Mingwu Zhang, Bo Yang, Zhenhua Chen, Tsuyoshi Takagi
2013 C conf
Extended Algorithm for Solving Underdefined Multivariate Quadratic Equations.
PQCrypto
Hiroyuki Miura, Yasufumi Hashimoto, Tsuyoshi Takagi
2013 J jnl
General Fault Attacks on Multivariate Public Key Cryptosystems.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yasufumi Hashimoto, Tsuyoshi Takagi, Kouichi Sakurai
2013 J jnl
Identity-based partially blind signature in the standard model for electronic cash.
Math. Comput. Model.
Fagen Li, Mingwu Zhang, Tsuyoshi Takagi
2013 Misc conf
Improvement of Faugère et al.'s Method to Solve ECDLP.
IWSEC
Yun-Ju Huang, Christophe Petit, Naoyuki Shinohara, Tsuyoshi Takagi
2013 J jnl
Lattice-based signcryption.
Concurr. Comput. Pract. Exp.
Fagen Li, Fahad Bin Muhaya, Muhammad Khurram Khan, Tsuyoshi Takagi
2013 C conf
Multivariate Signature Scheme Using Quadratic Forms.
PQCrypto
Takanori Yasuda, Tsuyoshi Takagi, Kouichi Sakurai
2013 Misc conf
On Cheater Identifiable Secret Sharing Schemes Secure against Rushing Adversary.
IWSEC
Rui Xu, Kirill Morozov, Tsuyoshi Takagi
2013 — conf
On Zero-Knowledge Identification Based on Q-ary Syndrome Decoding.
AsiaJCIS
Rong Hu, Kirill Morozov, Tsuyoshi Takagi
2013 J jnl
Parallel Gauss Sieve Algorithm: Solving the SVP in the Ideal Lattice of 128 dimensions.
IACR Cryptol. ePrint Arch.
Tsukasa Ishiguro, Shinsaku Kiyomoto, Yutaka Miyake, Tsuyoshi Takagi
2013 — conf
Post-quantum Strongly Unforgeable Identity-Based Signature Scheme from Lattices without Random Oracles.
INCoS
Zhenhua Liu, Xiangsong Zhang, Tsuyoshi Takagi
2013 A conf
Proof of plaintext knowledge for code-based public-key encryption revisited.
AsiaCCS
Rong Hu, Kirill Morozov, Tsuyoshi Takagi
2013 J jnl
Public Key Replacement and Universal Forgery of a SCLS Scheme.
Int. J. Netw. Secur.
Mingwu Zhang, Jintao Yao, Chunzhi Wang, Tsuyoshi Takagi
2013 J jnl
Secure identity-based signcryption in the standard model.
Math. Comput. Model.
Fagen Li, Tsuyoshi Takagi
2013 — conf
Secure k-NN computation on encrypted cloud data without sharing key with query users.
SCC@ASIACCS
Youwen Zhu, Rui Xu, Tsuyoshi Takagi
2013 J jnl
Secure k-NN query on encrypted cloud database without key-sharing.
Int. J. Electron. Secur. Digit. Forensics
Youwen Zhu, Rui Xu, Tsuyoshi Takagi
2012 J jnl
An exhaustive search method to find all small solutions of a multivariate modular linear equation.
JSIAM Lett.
Hui Zhang, Tsuyoshi Takagi
2012 J jnl
Analysis and Improvement of a Secret Broadcast with Binding Encryption in Broadcasting Networks.
IEICE Trans. Inf. Syst.
Mingwu Zhang, Fagen Li, Tsuyoshi Takagi
2012 Misc conf
Application of Scalar Multiplication of Edwards Curves to Pairing-Based Cryptography.
IWSEC
Takanori Yasuda, Tsuyoshi Takagi, Kouichi Sakurai
2012 Misc conf
Batch Verification Suitable for Efficiently Verifying a Limited Number of Signatures.
ICISC
Keisuke Hakuta, Yosuke Katoh, Hisayoshi Sato, Tsuyoshi Takagi
2012 A conf
Breaking Pairing-Based Cryptosystems Using η T Pairing over GF(397).
ASIACRYPT
Takuya Hayashi, Takeshi Shimoyama, Naoyuki Shinohara, Tsuyoshi Takagi
2012 J jnl
Breaking pairing-based cryptosystems using η
IACR Cryptol. ePrint Arch.
Takuya Hayashi, Takeshi Shimoyama, Naoyuki Shinohara, Tsuyoshi Takagi
2012 J jnl
Cryptanalysis of Strong Designated Verifier Signature Scheme with Non-delegatability and Non-transferability.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Mingwu Zhang, Tsuyoshi Takagi, Bo Yang, Fagen Li
2012 Misc conf
Efficient Secure Primitive for Privacy Preserving Distributed Computations.
IWSEC
Youwen Zhu, Tsuyoshi Takagi, Liusheng Huang
2012 J jnl
Efficient signcryption in the standard model.
Concurr. Comput. Pract. Exp.
Fagen Li, Mingwu Zhang, Tsuyoshi Takagi
2012 J jnl
Further improvement of an identity-based signcryption scheme in the standard model.
Comput. Electr. Eng.
Fagen Li, Yongjian Liao, Zhiguang Qin, Tsuyoshi Takagi
2012 J jnl
Identity-based online/offline signcryption for low power devices.
J. Netw. Comput. Appl.
Fagen Li, Muhammad Khurram Khan, Khaled Alghathbar, Tsuyoshi Takagi
2012 C conf
Key Length Estimation of Pairing-Based Cryptosystems Using η T Pairing.
ISPEC
Naoyuki Shinohara, Takeshi Shimoyama, Takuya Hayashi, Tsuyoshi Takagi
2012 J jnl
Key Length Estimation of Pairing-based Cryptosystems using η
IACR Cryptol. ePrint Arch.
Naoyuki Shinohara, Takeshi Shimoyama, Takuya Hayashi, Tsuyoshi Takagi
2012 J jnl
Practical Identity-Based Signature for Wireless Sensor Networks.
IEEE Wirel. Commun. Lett.
Fagen Li, Di Zhong, Tsuyoshi Takagi
2012 J jnl
Privacy-Preserving OLAP for Accurate Answer.
J. Circuits Syst. Comput.
Youwen Zhu, Liusheng Huang, Tsuyoshi Takagi, Mingwu Zhang
2012 C ed.
Provable Security - 6th International Conference, ProvSec 2012, Chengdu, China, September 26-28, 2012. Proceedings
ProvSec
Tsuyoshi Takagi, Guilin Wang, Zhiguang Qin, Shaoquan Jiang, Yong Yu
2012 J jnl
Reconciling and improving of multi-receiver signcryption protocols with threshold decryption.
Secur. Commun. Networks
Mingwu Zhang, Bo Yang, Tsuyoshi Takagi
2012 B conf
Reducing the Key Size of Rainbow Using Non-commutative Rings.
CT-RSA
Takanori Yasuda, Kouichi Sakurai, Tsuyoshi Takagi
2012 J jnl
Solving a 676-Bit Discrete Logarithm Problem in GF(3
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Takuya Hayashi, Naoyuki Shinohara, Lihua Wang, Shin'ichiro Matsuo, Masaaki Shirase, Tsuyoshi Takagi
2012 Misc conf
Zero-Knowledge Protocols for the McEliece Encryption.
ACISP
Kirill Morozov, Tsuyoshi Takagi
2011 — conf
An Experiment of Number Field Sieve over GF(
IWCC
Kenichiro Hayasaka, Tsuyoshi Takagi
2011 J jnl
An Improved Authenticated Encryption Scheme.
IEICE Trans. Inf. Syst.
Fagen Li, Jiang Deng, Tsuyoshi Takagi
2011 C conf
Anonymous Encryption with Partial-Order Subset Delegation Functionality.
ProvSec
Mingwu Zhang, Takashi Nishide, Bo Yang, Tsuyoshi Takagi
2011 J jnl
Cryptanalysis and Fixed of Short Signature Scheme without Random Oracle from Bilinear Parings.
Int. J. Netw. Secur.
Mingwu Zhang, Bo Yang, Yusheng Zhong, Pengcheng Li, Tsuyoshi Takagi
2011 A ed.
Cryptographic Hardware and Embedded Systems - CHES 2011 - 13th International Workshop, Nara, Japan, September 28 - October 1, 2011. Proceedings
CHES
Bart Preneel, Tsuyoshi Takagi
2011 — conf
Dual-Verifiers DVS with Message Recovery for Tolerant Routing in Wireless Sensor Networks.
PAISI
Mingwu Zhang, Tsuyoshi Takagi, Bo Yang
2011 C conf
Efficient Identity-Based Signcryption in the Standard Model.
ProvSec
Fagen Li, Fahad Bin Muhaya, Mingwu Zhang, Tsuyoshi Takagi
2011 J jnl
Efficient Implementation of the eta
IACR Cryptol. ePrint Arch.
Yosuke Katoh, Yun-Ju Huang, Chen-Mou Cheng, Tsuyoshi Takagi
2011 J jnl
Faster MapToPoint on Supersingular Elliptic Curves in Characteristic 3.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yuto Kawahara, Tetsutaro Kobayashi, Gen Takahashi, Tsuyoshi Takagi
2011 C conf
General Fault Attacks on Multivariate Public Key Cryptosystems.
PQCrypto
Yasufumi Hashimoto, Tsuyoshi Takagi, Kouichi Sakurai
2011 Misc conf
GeoEnc: Geometric Area Based Keys and Policies in Functional Encryption Systems.
ACISP
Mingwu Zhang, Tsuyoshi Takagi
2011 J jnl
Group-oriented setting's multisigncryption scheme with threshold designcryption.
Inf. Sci.
Mingwu Zhang, Bo Yang, Tsuyoshi Takagi
2011 J jnl
Multibiometric Based Secure Encryption, Authentication Scheme with Fuzzy Extractor.
Int. J. Netw. Secur.
Mingwu Zhang, Bo Yang, Wenzheng Zhang, Tsuyoshi Takagi
2010 J jnl
Cryptanalysis of efficient proxy signature schemes for mobile communication.
Sci. China Inf. Sci.
Fagen Li, Masaaki Shirase, Tsuyoshi Takagi
2010 Misc conf
Efficient Implementation of Pairing on BREW Mobile Phones.
IWSEC
Tadashi Iyama, Shinsaku Kiyomoto, Kazuhide Fukushima, Toshiaki Tanaka, Tsuyoshi Takagi
2010 J jnl
Efficient arithmetic on subfield elliptic curves over small finite fields of odd characteristic.
J. Math. Cryptol.
Keisuke Hakuta, Hisayoshi Sato, Tsuyoshi Takagi
2010 J jnl
FPGA and ASIC implementations of the eta
Comput. Electr. Eng.
Jean-Luc Beuchat, Hiroshi Doi, Kaoru Fujita, Atsuo Inomata, Piseth Ith, Akira Kanaoka, Masayoshi Katouno, Masahiro Mambo, Eiji Okamoto, Takeshi Okamoto, Takaaki Shiga, Masaaki Shirase, Ryuji Soga, Tsuyoshi Takagi, Ananda Vithanage, Hiroyasu Yamamoto
2010 — conf
Fuzzy Biometric Signcryption Scheme with Bilinear Pairings in the Standard Model.
PAISI
Mingwu Zhang, Bo Yang, Tsuyoshi Takagi, Yanping Shen, Wenzheng Zhang
2010 — conf
Solving a 676-Bit Discrete Logarithm Problem in GF(3
Public Key Cryptography
Takuya Hayashi, Naoyuki Shinohara, Lihua Wang, Shin'ichiro Matsuo, Masaaki Shirase, Tsuyoshi Takagi
2010 J jnl
Solving a 676-bit Discrete Logarithm Problem in GF(3
IACR Cryptol. ePrint Arch.
Takuya Hayashi, Naoyuki Shinohara, Lihua Wang, Shin'ichiro Matsuo, Masaaki Shirase, Tsuyoshi Takagi
2010 — conf
Towards Confidentiality of ID-Based Signcryption Schemes under without Random Oracle Model.
PAISI
Mingwu Zhang, Pengcheng Li, Bo Yang, Hao Wang, Tsuyoshi Takagi
2009 J jnl
A hybrid approach for privacy-preserving RFID tags.
Comput. Stand. Interfaces
Eun-Kyung Ryu, Tsuyoshi Takagi
2009 Misc ed.
Advances in Information and Computer Security, 4th International Workshop on Security, IWSEC 2009, Toyama, Japan, October 28-30, 2009, Proceedings
IWSEC
Tsuyoshi Takagi, Masahiro Mambo
2009 B conf
An Efficient Residue Group Multiplication for the eta
Selected Areas in Cryptography
Yuta Sasaki, Satsuki Nishina, Masaaki Shirase, Tsuyoshi Takagi
2009 C conf
Certificateless Hybrid Signcryption.
ISPEC
Fagen Li, Masaaki Shirase, Tsuyoshi Takagi
2009 J jnl
Certificateless Hybrid Signcryption.
IACR Cryptol. ePrint Arch.
Fagen Li, Masaaki Shirase, Tsuyoshi Takagi
2009 J jnl
Distributed Noise Generation for Density Estimation Based Clustering without Trusted Third Party.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Chunhua Su, Feng Bao, Jianying Zhou, Tsuyoshi Takagi, Kouichi Sakurai
2009 J jnl
Efficient Implementation of Pairing-Based Cryptography on a Sensor Node.
IEICE Trans. Inf. Syst.
Masaaki Shirase, Yukinori Miyazaki, Tsuyoshi Takagi, Dong-Guk Han, Dooho Choi
2009 B conf
Identity-Based Hybrid Signcryption.
ARES
Fagen Li, Masaaki Shirase, Tsuyoshi Takagi
2009 J jnl
Identity-Based Hybrid Signcryption.
IACR Cryptol. ePrint Arch.
Fagen Li, Masaaki Shirase, Tsuyoshi Takagi
2009 J jnl
One-wayness equivalent to general factoring.
IEEE Trans. Inf. Theory
Kaoru Kurosawa, Tsuyoshi Takagi
2009 J jnl
Security and Correctness Analysis on Privacy-Preserving
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Chunhua Su, Feng Bao, Jianying Zhou, Tsuyoshi Takagi, Kouichi Sakurai
2008 J jnl
A More Compact Representation of XTR Cryptosystem.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Masaaki Shirase, Dong-Guk Han, Yasushi Hibino, Howon Kim, Tsuyoshi Takagi
2008 B conf
A New Scheme for Distributed Density Estimation based Privacy-Preserving Clustering.
ARES
Chunhua Su, Feng Bao, Jianying Zhou, Tsuyoshi Takagi, Kouichi Sakurai
2008 B conf
A Secure RFID Protocol based on Insubvertible Encryption Using Guardian Proxy.
ARES
Kyosuke Osaka, Shuang Chang, Tsuyoshi Takagi, Kenichi Yamazaki, Osamu Takahashi
2008 J jnl
Algorithms and Arithmetic Operators for Computing the etaT Pairing in Characteristic Three.
IEEE Trans. Computers
Jean-Luc Beuchat, Nicolas Brisebarre, Jérémie Detrey, Eiji Okamoto, Masaaki Shirase, Tsuyoshi Takagi
2008 C conf
An Efficient Countermeasure against Side Channel Attacks for Pairing Computation.
ISPEC
Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2008 J jnl
Analysis and Improvement of Authenticatable Ring Signcryption Scheme.
IACR Cryptol. ePrint Arch.
Fagen Li, Masaaki Shirase, Tsuyoshi Takagi
2008 C conf
Digital Signatures Out of Second-Preimage Resistant Hash Functions.
PQCrypto
Erik Dahmen, Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
2008 C conf
Efficient Arithmetic on Subfield Elliptic Curves over Small Finite Fields of Odd Characteristic.
ISPEC
Keisuke Hakuta, Hisayoshi Sato, Tsuyoshi Takagi
2008 J jnl
Efficient Implementation of the Pairing on Mobilephones Using BREW.
IEICE Trans. Inf. Syst.
Motoi Yoshitomi, Tsuyoshi Takagi, Shinsaku Kiyomoto, Toshiaki Tanaka
2008 Misc conf
Efficient Multi-PKG ID-Based Signcryption for Ad Hoc Networks.
Inscrypt
Fagen Li, Masaaki Shirase, Tsuyoshi Takagi
2008 Misc conf
Efficient Signcryption Key Encapsulation without Random Oracles.
Inscrypt
Fagen Li, Masaaki Shirase, Tsuyoshi Takagi
2008 J jnl
FPGA and ASIC Implementations of the eta
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Hiroshi Doi, Kaoru Fujita, Atsuo Inomata, Piseth Ith, Akira Kanaoka, Masayoshi Katouno, Masahiro Mambo, Eiji Okamoto, Takeshi Okamoto, Takaaki Shiga, Masaaki Shirase, Ryuji Soga, Tsuyoshi Takagi, Ananda Vithanage, Hiroyasu Yamamoto
2008 C conf
Faster Implementation of eta-T Pairing over GF(3
Pairing
Yuto Kawahara, Kazumaro Aoki, Tsuyoshi Takagi
2008 C conf
Key Management Using Certificateless Public Key Cryptography in Ad Hoc Networks.
NPC
Fagen Li, Masaaki Shirase, Tsuyoshi Takagi
2008 — conf
Network Forensics on Mobile Ad-Hoc Networks.
KES (3)
Akira Otaka, Tsuyoshi Takagi, Osamu Takahashi
2008 B conf
On the Security of Online/Offline Signatures and Multisignatures from ACISP'06.
CANS
Fagen Li, Masaaki Shirase, Tsuyoshi Takagi
2008 J jnl
Reduction Optimal Trinomials for Efficient Software Implementation of the eta
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Toshiya Nakajima, Tetsuya Izu, Tsuyoshi Takagi
2008 J jnl
Short-Memory Scalar Multiplication for Koblitz Curves.
IEEE Trans. Computers
Camille Vuillaume, Katsuyuki Okeya, Tsuyoshi Takagi
2008 J jnl
Some Efficient Algorithms for the Final Exponentiation of eta
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2007 C conf
A Coprocessor for the Final Exponentiation of the
WAIFI
Jean-Luc Beuchat, Nicolas Brisebarre, Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2007 J jnl
A Coprocessor for the Final Exponentiation of the eta
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Nicolas Brisebarre, Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2007 J jnl
A New Upper Bound for the Minimal Density of Joint Representations in Elliptic Curve Cryptosystems.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Erik Dahmen, Katsuyuki Okeya, Tsuyoshi Takagi
2007 J jnl
A Refined Algorithm for the eta
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2007 J jnl
Algorithms and Arithmetic Operators for Computing the eta
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Nicolas Brisebarre, Jérémie Detrey, Eiji Okamoto, Masaaki Shirase, Tsuyoshi Takagi
2007 C conf
An Algorithm for the nt Pairing Calculation in Characteristic Three and its Hardware Implementation.
IEEE Symposium on Computer Arithmetic
Jean-Luc Beuchat, Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2007 B conf
Compressed XTR.
ACNS
Masaaki Shirase, Dong-Guk Han, Yasushi Hibino, Ho Won Kim, Tsuyoshi Takagi
2007 — conf
Efficient Conjunctive Keyword-Searchable Encryption.
AINA Workshops (1)
Eun-Kyung Ryu, Tsuyoshi Takagi
2007 Misc conf
Efficient Implementation of the Pairing on Mobilephones Using BREW.
WISA
Motoi Yoshitomi, Tsuyoshi Takagi, Shinsaku Kiyomoto, Toshiaki Tanaka
2007 J jnl
Efficient Implementation of the Pairing on Mobilephones using BREW.
IACR Cryptol. ePrint Arch.
Motoi Yoshitomi, Tsuyoshi Takagi, Shinsaku Kiyomoto, Toshiaki Tanaka
2007 C ed.
Pairing-Based Cryptography - Pairing 2007, First International Conference, Tokyo, Japan, July 2-4, 2007, Proceedings
Pairing
Tsuyoshi Takagi, Tatsuaki Okamoto, Eiji Okamoto, Takeshi Okamoto
2007 — conf
Privacy-Preserving Two-Party K-Means Clustering via Secure Approximation.
AINA Workshops (1)
Chunhua Su, Feng Bao, Jianying Zhou, Tsuyoshi Takagi, Kouichi Sakurai
2007 Misc conf
Reduction Optimal Trinomials for Efficient Software Implementation of the eta
IWSEC
Toshiya Nakajima, Tetsuya Izu, Tsuyoshi Takagi
2007 C conf
Some Efficient Algorithms for the Final Exponentiation of
ISPEC
Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2007 C conf
Two-Party Privacy-Preserving Agglomerative Document Clustering.
ISPEC
Chunhua Su, Jianying Zhou, Feng Bao, Tsuyoshi Takagi, Kouichi Sakurai
2007 Misc conf
Universal
WISA
Masaaki Shirase, Yuto Kawahara, Tsuyoshi Takagi, Eiji Okamoto
2006 J jnl
An Algorithm for the η
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2006 C conf
An Efficient and Secure RFID Security Method with Ownership Transfer.
CIS
Kyosuke Osaka, Tsuyoshi Takagi, Kenichi Yamazaki, Osamu Takahashi
2006 J jnl
Analysis of Fractional Window Recoding Methods and Their Application to Elliptic Curve Cryptosystems.
IEEE Trans. Computers
Katja Schmidt-Samoa, Olivier Semay, Tsuyoshi Takagi
2006 J jnl
Defeating Simple Power Analysis on Koblitz Curves.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Camille Vuillaume, Katsuyuki Okeya, Tsuyoshi Takagi
2006 J jnl
Efficient Hyperelliptic Curve Cryptosystems Using Theta Divisors.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Masanobu Katagi, Toru Akishita, Izuru Kitamura, Tsuyoshi Takagi
2006 C conf
Efficient Implementation of Tate Pairing on a Mobile Phone Using Java.
CIS
Yuto Kawahara, Tsuyoshi Takagi, Eiji Okamoto
2006 J jnl
Efficient Implementation of Tate Pairing on a Mobile Phone using Java.
IACR Cryptol. ePrint Arch.
Yuto Kawahara, Tsuyoshi Takagi, Eiji Okamoto
2006 C conf
Further Security Analysis of XTR.
ISPEC
Dong-Guk Han, Tsuyoshi Takagi, Jongin Lim
2006 J jnl
Generalized Powering Functions and Their Application to Digital Signatures.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Hisayoshi Sato, Tsuyoshi Takagi, Satoru Tezuka, Kazuo Takaragi
2006 A conf
New Approach for Selectively Convertible Undeniable Signature Schemes.
ASIACRYPT
Kaoru Kurosawa, Tsuyoshi Takagi
2006 — conf
New Security Problem in RFID Systems "Tag Killing".
ICCSA (3)
Dong-Guk Han, Tsuyoshi Takagi, Howon Kim, Kyoil Chung
2006 C conf
Power Analysis to ECC Using Differential Power Between Multiplication and Squaring.
CARDIS
Toru Akishita, Tsuyoshi Takagi
2006 J jnl
Radix-
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Tsuyoshi Takagi, David Reis Jr., Sung-Ming Yen, Bo-Ching Wu
2006 J jnl
Security Analysis of the SPA-Resistant Fractional Width Method.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
2006 J jnl
Security analysis of CRT-based cryptosystems.
Int. J. Inf. Sec.
Katsuyuki Okeya, Tsuyoshi Takagi
2006 B conf
Side Channel Attacks and Countermeasures on Pairing Based Cryptosystems over Binary Fields.
CANS
Tae Hyun Kim, Tsuyoshi Takagi, Dong-Guk Han, Ho Won Kim, Jongin Lim
2006 J jnl
Side Channel Attacks and Countermeasures on Pairing Based Cryptosystems over Binary Fields.
IACR Cryptol. ePrint Arch.
Tae Hyun Kim, Tsuyoshi Takagi, Dong-Guk Han, Ho Won Kim, Jongin Lim
2006 J jnl
Some Efficient Algorithms for the Final Exponentiation of η
IACR Cryptol. ePrint Arch.
Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2005 Misc conf
A Complete Divisor Class Halving Algorithm for Hyperelliptic Curve Cryptosystems of Genus Two.
ACISP
Izuru Kitamura, Masanobu Katagi, Tsuyoshi Takagi
2005 — conf
An Advanced Method for Joint Scalar Multiplications on Memory Constraint Devices.
ESAS
Erik Dahmen, Katsuyuki Okeya, Tsuyoshi Takagi
2005 — conf
An id-based non-interactive tripartite key agreement protocol with K-resilience.
Communications and Computer Networks
Raylin Tso, Takeshi Okamoto, Tsuyoshi Takagi, Eiji Okamoto
2005 — conf
Collision Attack on XTR and a Countermeasure with a Fixed Pattern.
EUC Workshops
Dong-Guk Han, Tsuyoshi Takagi, Tae Hyun Kim, Howon Kim, Kyoil Chung
2005 J jnl
Collision Attack on XTR and a Countermeasure with a Fixed Pattern.
IACR Cryptol. ePrint Arch.
Dong-Guk Han, Tsuyoshi Takagi, Tae Hyun Kim, Ho Won Kim, Kyoil Chung
2005 J jnl
Efficient Arithmetic on Subfield Elliptic Curves over Small Odd Characteristics.
IACR Cryptol. ePrint Arch.
Keisuke Hakuta, Hisayoshi Sato, Tsuyoshi Takagi
2005 Misc conf
Efficient Representations on Koblitz Curves with Resistance to Side Channel Attacks.
ACISP
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
2005 J jnl
Fast Elliptic Curve Multiplications Resistant against Side Channel Attacks.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Tetsuya Izu, Tsuyoshi Takagi
2005 — conf
Insider Impersonation-MIM Attack to Tripartite Key Agreement Scheme and an Efficient Protocol for Multiple Keys.
CIS (2)
Lihua Wang, Takeshi Okamoto, Tsuyoshi Takagi, Eiji Okamoto
2005 J jnl
On the Importance of Protecting in SFLASH against Side Channel Attacks.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
2005 J jnl
On the Optimal Parameter Choice for Elliptic Curve Cryptosystems Using Isogeny.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Toru Akishita, Tsuyoshi Takagi
2005 J jnl
One-Wayness Equivalent to General Factoring.
IACR Cryptol. ePrint Arch.
Kaoru Kurosawa, Tsuyoshi Takagi
2005 — conf
Paillier's Cryptosystem Modulo p
Mycrypt
Katja Schmidt-Samoa, Tsuyoshi Takagi
2005 A conf
Short Memory Scalar Multiplication on Koblitz Curves.
CHES
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
2005 J jnl
Some Analysis of Radix-r Representations.
IACR Cryptol. ePrint Arch.
Dong-Guk Han, Tsuyoshi Takagi
2005 J jnl
Some Explicit Formulae of NAF and its Left-to-Right Analogue.
IACR Cryptol. ePrint Arch.
Dong-Guk Han, Tetsuya Izu, Tsuyoshi Takagi
2005 J jnl
Zero-Value Register Attack on Elliptic Curve Cryptosystem.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Toru Akishita, Tsuyoshi Takagi
2004 J jnl
A Complete Divisor Class Halving Algorithm for Hyperelliptic Curve Cryptosystems of Genus Two.
IACR Cryptol. ePrint Arch.
Izuru Kitamura, Masanobu Katagi, Tsuyoshi Takagi
2004 J jnl
A Fast RSA-Type Public-Key Primitive Modulo p
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Tsuyoshi Takagi
2004 Misc conf
A Provably Secure Elliptic Curve Scheme with Fast Encryption.
INDOCRYPT
David Galindo, Sebastià Martín Molleví, Tsuyoshi Takagi, Jorge Luis Villar
2004 A* conf
Behavior Description and Control using Behavior Module for Personal Robot.
ICRA
Yukiko Hoshino, Tsuyoshi Takagi, Ugo Di Profio, Masahiro Fujita
2004 A conf
Behavior selection and motion modulation in emotionally grounded architecture for QRIO SDR-4XII.
IROS
Tsutomu Sawada, Tsuyoshi Takagi, Masahiro Fujita
2004 J jnl
Efficient Undeniable Signature Schemes Based on Ideal Arithmetic in Quadratic Orders.
Des. Codes Cryptogr.
Ingrid Biehl, Sachar Paulus, Tsuyoshi Takagi
2004 Misc conf
Exact Analysis of Montgomery Multiplication.
INDOCRYPT
Hisayoshi Sato, Daniel Schepers, Tsuyoshi Takagi
2004 J jnl
Fast Elliptic Curve Multiplications with SIMD Operations.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Tetsuya Izu, Tsuyoshi Takagi
2004 — conf
Learning behavior selection through interaction based on emotionally grounded symbol concept.
Humanoids
Tsutomu Sawada, Tsuyoshi Takagi, Yukiko Hoshino, Masahiro Fujita
2004 Misc conf
Novel Efficient Implementations of Hyperelliptic Curve Cryptosystems Using Degenerate Divisors.
WISA
Masanobu Katagi, Izuru Kitamura, Toru Akishita, Tsuyoshi Takagi
2004 Misc conf
On the Exact Flexibility of the Flexible Countermeasure Against Side Channel Attacks.
ACISP
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
2004 — conf
On the Importance of Protecting Delta in SFLASH against Side Channel Attacks.
ITCC (2)
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
2004 — conf
On the Optimal Parameter Choice for Elliptic Curve Cryptosystems Using Isogeny.
Public Key Cryptography
Toru Akishita, Tsuyoshi Takagi
2004 C conf
Radix-r Non-Adjacent Form.
ISC
Tsuyoshi Takagi, Sung-Ming Yen, Bo-Ching Wu
2004 J jnl
SCA-Resistant and Fast Elliptic Scalar Multiplication Based on wNAF.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Katsuyuki Okeya, Tsuyoshi Takagi
2004 B conf
Security Analysis of CRT-Based Cryptosystems.
ACNS
Katsuyuki Okeya, Tsuyoshi Takagi
2004 A* conf
Signed Binary Representations Revisited.
CRYPTO
Katsuyuki Okeya, Katja Schmidt-Samoa, Christian Spahn, Tsuyoshi Takagi
2004 J jnl
Signed Binary Representations Revisited.
IACR Cryptol. ePrint Arch.
Katsuyuki Okeya, Katja Schmidt-Samoa, Christian Spahn, Tsuyoshi Takagi
2004 Misc conf
Some Improved Algorithms for Hyperelliptic Curve Cryptosystems Using Degenerate Divisors.
ICISC
Masanobu Katagi, Toru Akishita, Izuru Kitamura, Tsuyoshi Takagi
2003 A conf
A Complete and Explicit Security Reduction Algorithm for RSA-Based Cryptosystems.
ASIACRYPT
Kaoru Kurosawa, Katja Schmidt-Samoa, Tsuyoshi Takagi
2003 A conf
A More Flexible Countermeasure against Side Channel Attacks Using Window Method.
CHES
Katsuyuki Okeya, Tsuyoshi Takagi
2003 J jnl
An ethological and emotional basis for human-robot interaction.
Robotics Auton. Syst.
Ronald C. Arkin, Masahiro Fujita, Tsuyoshi Takagi, Rika Hasegawa
2003 — conf
Exceptional Procedure Attack on Elliptic Curve Cryptosystems.
Public Key Cryptography
Tetsuya Izu, Tsuyoshi Takagi
2003 A conf
Generalized Powering Functions and Their Application to Digital Signatures.
ASIACRYPT
Hisayoshi Sato, Tsuyoshi Takagi, Satoru Tezuka, Kazuo Takaragi
2003 J jnl
Novel Efficient Implementations of Hyperelliptic Curve Cryptosystems using Degenerate Divisors.
IACR Cryptol. ePrint Arch.
Masanobu Katagi, Izuru Kitamura, Toru Akishita, Tsuyoshi Takagi
2003 A conf
Some RSA-Based Encryption Schemes with Tight Security Reduction.
ASIACRYPT
Kaoru Kurosawa, Tsuyoshi Takagi
2003 J jnl
Some RSA-based Encryption Schemes with Tight Security Reduction.
IACR Cryptol. ePrint Arch.
Kaoru Kurosawa, Tsuyoshi Takagi
2003 B conf
The Width-w NAF Method Provides Small Memory and Fast Elliptic Scalar Multiplications Secure against Side Channel Attacks.
CT-RSA
Katsuyuki Okeya, Tsuyoshi Takagi
2003 C conf
Zero-Value Point Attacks on Elliptic Curve Cryptosystem.
ISC
Toru Akishita, Tsuyoshi Takagi
2002 — conf
A Fast Parallel Elliptic Curve Multiplication Resistant against Side Channel Attacks.
Public Key Cryptography
Tetsuya Izu, Tsuyoshi Takagi
2002 Misc conf
A New Distributed Primality Test for Shared RSA Keys Using Quadratic Fields.
ACISP
Ingrid Biehl, Tsuyoshi Takagi
2002 Misc conf
A Reject Timing Attackon an IND-CCA2 Public-Key Cryptosystem.
ICISC
Kouichi Sakurai, Tsuyoshi Takagi
2002 Misc conf
Efficient Computations of the Tate Pairingfor the Large MOV Degrees.
ICISC
Tetsuya Izu, Tsuyoshi Takagi
2002 C conf
Fast Elliptic Curve Multiplications with SIMD Operations.
ICICS
Tetsuya Izu, Tsuyoshi Takagi
2002 Misc conf
Improved Elliptic Curve Multiplication Methods Resistant against Side Channel Attacks.
INDOCRYPT
Tetsuya Izu, Bodo Möller, Tsuyoshi Takagi
2002 — conf
New Semantically Secure Public-Key Cryptosystems from the RSA-Primitive.
Public Key Cryptography
Kouichi Sakurai, Tsuyoshi Takagi
2002 Misc conf
On the Security of a Modified Paillier Public-Key Primitive.
ACISP
Kouichi Sakurai, Tsuyoshi Takagi
2001 Misc conf
An IND-CCA2 Public-Key Cryptosystem with Fast Decryption.
ICISC
Johannes Buchmann, Kouichi Sakurai, Tsuyoshi Takagi
2001 — conf
Architecture and preliminary experimental results for emotionally grounded symbol acquisition.
Agents
Masahiro Fujita, Gabriel Costa, Rika Hasegawa, Tsuyoshi Takagi, Jun Yokono, Hideki Shimomura
2001 A* conf
Ethological Modeling and Architecture for an Entertainment Robot.
ICRA
Ronald C. Arkin, Masahiro Fujita, Tsuyoshi Takagi, Rika Hasegawa
2001 J jnl
How to Choose Secret Parameters for RSA-Type Cryptosystems over Elliptic Curves.
Des. Codes Cryptogr.
Marc Joye, Jean-Jacques Quisquater, Tsuyoshi Takagi
2001 — —
New public-key cryptosystems with fast decryption.
Tsuyoshi Takagi
2000 J jnl
A New Public-Key Cryptosystem over a Quadratic Order with Quadratic Decryption Time.
J. Cryptol.
Sachar Paulus, Tsuyoshi Takagi
1999 A conf
NICE - New Ideal Coset Encryption.
CHES
Michael Hartmann, Sachar Paulus, Tsuyoshi Takagi
1999 A conf
Reducing Logarithms in Totally Non-maximal Imaginary Quadratic Orders to Logarithms in Finite Fields.
ASIACRYPT
Detlef Hühnlein, Tsuyoshi Takagi
1998 A* conf
A Cryptosystem Based on Non-maximal Imaginary Quadratic Orders with Fast Decryption.
EUROCRYPT
Detlef Hühnlein, Michael J. Jacobson Jr., Sachar Paulus, Tsuyoshi Takagi
1998 Misc conf
A generalization of the Diffie-Hellman problem and related cryptosystems allowing fast decryption.
ICISC
Sachar Paulus, Tsuyoshi Takagi
1998 A* conf
Fast RSA-Type Cryptosystem Modulo p
CRYPTO
Tsuyoshi Takagi
1998 Misc conf
Rabin and RSA analogues based on non-maximal imaginary quadratic orders.
ICISC
Detlef Hühnlein, Andreas Meyer, Tsuyoshi Takagi
1997 A* conf
Fast RSA-Type Cryptosystems Using N-Adic Expansion.
CRYPTO
Tsuyoshi Takagi
1996 B conf
The Multi-variable Modular Polynomial and Its Applications to Cryptography.
ISAAC
Tsuyoshi Takagi, Shozo Naito