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ORCIDKeita Xagawa
草川 恵太
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- unicode name: 草川 恵太
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2020 – today
- 2024
[j12]Keita Xagawa
:
On the Efficiency of Generic, Quantum Cryptographic Constructions. IACR Commun. Cryptol. 1(1): 8 (2024)- [c36]Keita Xagawa:
Signatures with Memory-Tight Security in the Quantum Random Oracle Model. EUROCRYPT (6) 2024: 30-58 - [c35]Haruhisa Kosuge, Keita Xagawa:
Probabilistic Hash-and-Sign with Retry in the Quantum Random Oracle Model. Public Key Cryptography (1) 2024: 259-288 - [i35]Mukul Kulkarni, Keita Xagawa:
Strong Existential Unforgeability and More of MPC-in-the-Head Signatures. IACR Cryptol. ePrint Arch. 2024: 1069 (2024) - [i34]Tomoyuki Morimae, Keita Xagawa:
Quantum Group Actions. IACR Cryptol. ePrint Arch. 2024: 1578 (2024) - 2023
- [j11]Yutaro Tanaka, Rei Ueno, Keita Xagawa, Akira Ito, Junko Takahashi, Naofumi Homma:
Multiple-Valued Plaintext-Checking Side-Channel Attacks on Post-Quantum KEMs. IACR Trans. Cryptogr. Hardw. Embed. Syst. 2023(3): 473-503 (2023) - [c34]Kohei Nakagawa, Atsushi Fujioka, Akira Nagai, Junichi Tomida, Keita Xagawa, Kan Yasuda:
Making the Identity-Based Diffie-Hellman Key Exchange Efficiently Revocable. LATINCRYPT 2023: 171-191 - [c33]Varun Maram, Keita Xagawa:
Post-quantum Anonymity of Kyber. Public Key Cryptography (1) 2023: 3-35 - [i33]Keita Xagawa:
On the Efficiency of Generic, Quantum Cryptographic Constructions. IACR Cryptol. ePrint Arch. 2023: 1142 (2023) - [i32]Keita Xagawa:
Signatures with Memory-Tight Security in the Quantum Random Oracle Model. IACR Cryptol. ePrint Arch. 2023: 1734 (2023) - 2022
- [j10]Shweta Agrawal, Rajarshi Biswas, Ryo Nishimaki, Keita Xagawa, Xiang Xie, Shota Yamada:
Cryptanalysis of Boyen's attribute-based encryption scheme in TCC 2013. Des. Codes Cryptogr. 90(10): 2301-2318 (2022) - [j9]Rei Ueno, Keita Xagawa, Yutaro Tanaka, Akira Ito, Junko Takahashi, Naofumi Homma:
Curse of Re-encryption: A Generic Power/EM Analysis on Post-Quantum KEMs. IACR Trans. Cryptogr. Hardw. Embed. Syst. 2022(1): 296-322 (2022) - [c32]Keita Xagawa:
Anonymity of NIST PQC Round 3 KEMs. EUROCRYPT (3) 2022: 551-581 - [i31]Yutaro Tanaka, Rei Ueno, Keita Xagawa, Akira Ito, Junko Takahashi, Naofumi Homma:
Multiple-Valued Plaintext-Checking Side-Channel Attacks on Post-Quantum KEMs. IACR Cryptol. ePrint Arch. 2022: 940 (2022) - [i30]Haruhisa Kosuge, Keita Xagawa:
Probabilistic Hash-and-Sign with Retry in the Quantum Random Oracle Model. IACR Cryptol. ePrint Arch. 2022: 1359 (2022) - [i29]Varun Maram, Keita Xagawa:
Post-Quantum Anonymity of Kyber. IACR Cryptol. ePrint Arch. 2022: 1696 (2022) - 2021
- [c31]Keita Xagawa, Akira Ito, Rei Ueno, Junko Takahashi, Naofumi Homma:
Fault-Injection Attacks Against NIST's Post-Quantum Cryptography Round 3 KEM Candidates. ASIACRYPT (2) 2021: 33-61 - [c30]Keita Xagawa:
The Boneh-Katz Transformation, Revisited: Pseudorandom/Obliviously-Samplable PKE from Lattices and Codes and Its Application. SAC 2021: 47-67 - [i28]Shweta Agrawal, Rajarshi Biswas, Ryo Nishimaki, Keita Xagawa, Xiang Xie, Shota Yamada:
Cryptanalysis of Boyen's Attribute-Based Encryption Scheme in TCC 2013. IACR Cryptol. ePrint Arch. 2021: 505 (2021) - [i27]Keita Xagawa:
The Boneh-Katz Transformation, Revisited: Pseudorandom/Obliviously-Samplable PKE from Lattices and Codes and Its Application. IACR Cryptol. ePrint Arch. 2021: 740 (2021) - [i26]Keita Xagawa, Akira Ito, Rei Ueno, Junko Takahashi, Naofumi Homma:
Fault-Injection Attacks against NIST's Post-Quantum Cryptography Round 3 KEM Candidates. IACR Cryptol. ePrint Arch. 2021: 840 (2021) - [i25]Rei Ueno, Keita Xagawa, Yutaro Tanaka, Akira Ito, Junko Takahashi, Naofumi Homma:
Curse of Re-encryption: A Generic Power/EM Analysis on Post-Quantum KEMs. IACR Cryptol. ePrint Arch. 2021: 849 (2021) - [i24]Keita Xagawa:
Anonymity of NIST PQC Round-3 KEMs. IACR Cryptol. ePrint Arch. 2021: 1323 (2021) - 2020
- [j8]Nicolas Aragon, Olivier Blazy, Jean-Christophe Deneuville, Philippe Gaborit, Terry Shue Chien Lau, Chik How Tan, Keita Xagawa:
Cryptanalysis of a rank-based signature with short public keys. Des. Codes Cryptogr. 88(4): 643-653 (2020) - [j7]Akinori Hosoyamada, Yu Sasaki, Seiichiro Tani, Keita Xagawa:
Quantum algorithm for the multicollision problem. Theor. Comput. Sci. 842: 100-117 (2020) - [c29]Yusuke Yoshida, Fuyuki Kitagawa, Keita Xagawa, Keisuke Tanaka:
Non-committing Encryption with Constant Ciphertext Expansion from Standard Assumptions. ASIACRYPT (2) 2020: 36-65 - [c28]Chitchanok Chuengsatiansup, Thomas Prest, Damien Stehlé, Alexandre Wallet, Keita Xagawa:
ModFalcon: Compact Signatures Based On Module-NTRU Lattices. AsiaCCS 2020: 853-866 - [c27]Houda Ferradi, Keita Xagawa:
Post-quantum Provably-Secure Authentication and MAC from Mersenne Primes. CT-RSA 2020: 469-495 - [i23]Yusuke Yoshida, Fuyuki Kitagawa, Keita Xagawa, Keisuke Tanaka:
Non-Committing Encryption with Constant Ciphertext Expansion from Standard Assumptions. IACR Cryptol. ePrint Arch. 2020: 1210 (2020)
2010 – 2019
- 2019
- [c26]Minki Hhan, Keita Xagawa, Takashi Yamakawa:
Quantum Random Oracle Model with Auxiliary Input. ASIACRYPT (1) 2019: 584-614 - [c25]Keita Xagawa, Takashi Yamakawa:
(Tightly) QCCA-Secure Key-Encapsulation Mechanism in the Quantum Random Oracle Model. PQCrypto 2019: 249-268 - [c24]Akinori Hosoyamada, Yu Sasaki, Seiichiro Tani, Keita Xagawa:
Improved Quantum Multicollision-Finding Algorithm. PQCrypto 2019: 350-367 - [i22]Akinori Hosoyamada, Yu Sasaki, Seiichiro Tani, Keita Xagawa:
Quantum Algorithm for the Multicollision Problem. CoRR abs/1911.02822 (2019) - [i21]Keita Xagawa:
Cryptanalysis of a New Code-based Signature Scheme with Shorter Public Key in PKC 2019. IACR Cryptol. ePrint Arch. 2019: 120 (2019) - [i20]Houda Ferradi, Keita Xagawa:
Post-Quantum Provably-Secure Authentication and MAC from Mersenne Primes. IACR Cryptol. ePrint Arch. 2019: 409 (2019) - [i19]Minki Hhan, Keita Xagawa, Takashi Yamakawa:
Quantum Random Oracle Model with Auxiliary Input. IACR Cryptol. ePrint Arch. 2019: 1093 (2019) - [i18]Chitchanok Chuengsatiansup, Thomas Prest, Damien Stehlé, Alexandre Wallet, Keita Xagawa:
ModFalcon: compact signatures based on module NTRU lattices. IACR Cryptol. ePrint Arch. 2019: 1456 (2019) - 2018
- [j6]Jae Hong Seo, Keita Emura, Keita Xagawa, Kazuki Yoneyama:
Accumulable optimistic fair exchange from verifiably encrypted homomorphic signatures. Int. J. Inf. Sec. 17(2): 193-220 (2018) - [c23]Jonathan Bootle, Mehdi Tibouchi, Keita Xagawa:
Cryptanalysis of Compact-LWE. CT-RSA 2018: 80-97 - [c22]Tsunekazu Saito, Keita Xagawa, Takashi Yamakawa:
Tightly-Secure Key-Encapsulation Mechanism in the Quantum Random Oracle Model. EUROCRYPT (3) 2018: 520-551 - [c21]Keita Xagawa:
Practical Cryptanalysis of a Public-Key Encryption Scheme Based on Non-linear Indeterminate Equations at SAC 2017. PQCrypto 2018: 142-161 - [i17]Akinori Hosoyamada, Yu Sasaki, Seiichiro Tani, Keita Xagawa:
Improved Quantum Multicollision-Finding Algorithm. CoRR abs/1811.08097 (2018) - [i16]Keita Xagawa:
Practical Attack on RaCoSS-R. IACR Cryptol. ePrint Arch. 2018: 831 (2018) - [i15]Keita Xagawa, Takashi Yamakawa:
(Tightly) QCCA-Secure Key-Encapsulation Mechanism in the Quantum Random Oracle Model. IACR Cryptol. ePrint Arch. 2018: 838 (2018) - [i14]Akinori Hosoyamada, Yu Sasaki, Seiichiro Tani, Keita Xagawa:
Improved Quantum Multicollision-Finding Algorithm. IACR Cryptol. ePrint Arch. 2018: 1122 (2018) - 2017
- [c20]Akinori Hosoyamada, Yu Sasaki, Keita Xagawa:
Quantum Multicollision-Finding Algorithm. ASIACRYPT (2) 2017: 179-210 - [c19]Caleb Horst, Ryo Kikuchi, Keita Xagawa:
Cryptanalysis of Comparable Encryption in SIGMOD'16. SIGMOD Conference 2017: 1069-1084 - [i13]Akinori Hosoyamada, Yu Sasaki, Keita Xagawa:
Quantum Multicollision-Finding Algorithm. IACR Cryptol. ePrint Arch. 2017: 864 (2017) - [i12]Tsunekazu Saito, Keita Xagawa, Takashi Yamakawa:
Tightly-Secure Key-Encapsulation Mechanism in the Quantum Random Oracle Model. IACR Cryptol. ePrint Arch. 2017: 1005 (2017) - [i11]Keita Xagawa:
Practical Cryptanalysis of a Public-key Encryption Scheme Based on Non-linear Indeterminate Equations at SAC 2017. IACR Cryptol. ePrint Arch. 2017: 1224 (2017) - 2016
- [c18]Eiichiro Fujisaki, Keita Xagawa:
Public-Key Cryptosystems Resilient to Continuous Tampering and Leakage of Arbitrary Functions. ASIACRYPT (1) 2016: 908-938 - [i10]Keita Xagawa:
Groth-Sahai Proofs Revisited Again: A Bug in "Optimized" Randomization. IACR Cryptol. ePrint Arch. 2016: 476 (2016) - 2015
- [j5]Atsushi Fujioka, Koutarou Suzuki, Keita Xagawa, Kazuki Yoneyama:
Strongly secure authenticated key exchange from factoring, codes, and lattices. Des. Codes Cryptogr. 76(3): 469-504 (2015) - [j4]Ryo Nishimaki, Keita Xagawa:
Verifiably encrypted signatures with short keys based on the decisional linear problem and obfuscation for encrypted VES. Des. Codes Cryptogr. 77(1): 61-98 (2015) - [j3]Ryo Nishimaki, Keita Xagawa:
Key-Private Proxy Re-Encryption from Lattices, Revisited. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 98-A(1): 100-116 (2015) - [c17]Jae Hong Seo, Keita Emura, Keita Xagawa, Kazuki Yoneyama:
Accumulable Optimistic Fair Exchange from Verifiably Encrypted Homomorphic Signatures. ACNS 2015: 192-214 - [c16]Eiichiro Fujisaki, Keita Xagawa:
Efficient RKA-Secure KEM and IBE Schemes Against Invertible Functions. LATINCRYPT 2015: 3-20 - [i9]Ryo Nishimaki, Keita Xagawa:
Verifiably Encrypted Signatures with Short Keys based on the Decisional Linear Problem and Obfuscation for Encrypted VES. IACR Cryptol. ePrint Arch. 2015: 248 (2015) - [i8]Keita Xagawa:
Improved (Hierarchical) Inner-Product Encryption from Lattices. IACR Cryptol. ePrint Arch. 2015: 249 (2015) - [i7]Nishanth Chandran, Melissa Chase, Feng-Hao Liu, Ryo Nishimaki, Keita Xagawa:
Re-encryption, functional re-encryption, and multi-hop re-encryption: A framework for achieving obfuscation-based security and instantiations from lattices. IACR Cryptol. ePrint Arch. 2015: 491 (2015) - [i6]Eiichiro Fujisaki, Keita Xagawa:
Note on the RKA security of Continuously Non-Malleable Key-Derivation Function from PKC 2015. IACR Cryptol. ePrint Arch. 2015: 1088 (2015) - 2014
- [j2]Atsushi Fujioka, Taiichi Saito, Keita Xagawa:
Secure Hierarchical Identity-Based Identification without Random Oracles. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 97-A(6): 1307-1317 (2014) - [j1]Atsushi Fujioka, Eiichiro Fujisaki, Keita Xagawa:
Non-malleable Multiple Public-Key Encryption. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 97-A(6): 1318-1334 (2014) - [c15]Nishanth Chandran, Melissa Chase, Feng-Hao Liu, Ryo Nishimaki, Keita Xagawa:
Re-encryption, Functional Re-encryption, and Multi-hop Re-encryption: A Framework for Achieving Obfuscation-Based Security and Instantiations from Lattices. Public Key Cryptography 2014: 95-112 - [c14]Martin R. Albrecht, Jean-Charles Faugère, Robert Fitzpatrick, Ludovic Perret, Yosuke Todo, Keita Xagawa:
Practical Cryptanalysis of a Public-Key Encryption Scheme Based on New Multivariate Quadratic Assumptions. Public Key Cryptography 2014: 446-464 - 2013
- [c13]Atsushi Fujioka, Koutarou Suzuki, Keita Xagawa, Kazuki Yoneyama:
Practical and post-quantum authenticated key exchange from one-way secure key encapsulation mechanism. AsiaCCS 2013: 83-94 - [c12]Keita Xagawa:
Improved (Hierarchical) Inner-Product Encryption from Lattices. Public Key Cryptography 2013: 235-252 - [c11]Ryo Nishimaki, Keita Xagawa:
Verifiably Encrypted Signatures with Short Keys Based on the Decisional Linear Problem and Obfuscation for Encrypted VES. Public Key Cryptography 2013: 405-422 - [i5]Keita Xagawa:
Message Authentication Codes Secure against Additively Related-Key Attacks. IACR Cryptol. ePrint Arch. 2013: 111 (2013) - [i4]Yosuke Todo, Keita Xagawa:
Cryptanalysis of the Huang-Liu-Yang Cryptosystem from PKC 2012. IACR Cryptol. ePrint Arch. 2013: 481 (2013) - 2012
- [c10]Atsushi Fujioka, Taiichi Saito, Keita Xagawa:
Security Enhancements by OR-Proof in Identity-Based Identification. ACNS 2012: 135-152 - [c9]Atsushi Fujioka, Taiichi Saito, Keita Xagawa:
Applicability of OR-Proof Techniques to Hierarchical Identity-Based Identification. CANS 2012: 169-184 - [c8]Atsushi Fujioka, Taiichi Saito, Keita Xagawa:
Security Enhancement of Identity-Based Identification with Reversibility. ICICS 2012: 202-213 - [c7]Atsushi Fujioka, Taiichi Saito, Keita Xagawa:
Secure Hierarchical Identity-Based Identification without Random Oracles. ISC 2012: 258-273 - [c6]Atsushi Fujioka, Koutarou Suzuki, Keita Xagawa, Kazuki Yoneyama:
Strongly Secure Authenticated Key Exchange from Factoring, Codes, and Lattices. Public Key Cryptography 2012: 467-484 - [i3]Atsushi Fujioka, Koutarou Suzuki, Keita Xagawa, Kazuki Yoneyama:
Strongly Secure Authenticated Key Exchange from Factoring, Codes, and Lattices. IACR Cryptol. ePrint Arch. 2012: 211 (2012) - 2010
- [c5]Akinori Kawachi, Akira Numayama, Keisuke Tanaka, Keita Xagawa:
Security of Encryption Schemes in Weakened Random Oracle Models. Public Key Cryptography 2010: 403-419 - [i2]Akinori Kawachi, Akira Numayama, Keisuke Tanaka, Keita Xagawa:
Security of Encryption Schemes in Weakened Random Oracle Models. IACR Cryptol. ePrint Arch. 2010: 122 (2010)
2000 – 2009
- 2009
- [c4]Damien Stehlé, Ron Steinfeld, Keisuke Tanaka, Keita Xagawa:
Efficient Public Key Encryption Based on Ideal Lattices. ASIACRYPT 2009: 617-635 - [c3]Keita Xagawa, Keisuke Tanaka:
Zero-Knowledge Protocols for NTRU: Application to Identification and Proof of Plaintext Knowledge. ProvSec 2009: 198-213 - [i1]Damien Stehlé, Ron Steinfeld, Keisuke Tanaka, Keita Xagawa:
Efficient Public Key Encryption Based on Ideal Lattices. IACR Cryptol. ePrint Arch. 2009: 285 (2009) - 2008
- [c2]Akinori Kawachi, Keisuke Tanaka, Keita Xagawa:
Concurrently Secure Identification Schemes Based on the Worst-Case Hardness of Lattice Problems. ASIACRYPT 2008: 372-389 - 2007
- [c1]Akinori Kawachi, Keisuke Tanaka, Keita Xagawa:
Multi-bit Cryptosystems Based on Lattice Problems. Public Key Cryptography 2007: 315-329
Coauthor Index
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