Keita Xagawa

Google Scholar ORCID: 0000-0002-6832-9940
36 publications in security and cryptology related venues
Year
Venue
Title
2025
conf/sp
Post-Quantum Cryptographic Analysis of SSH.
Benjamin Bencina Benjamin Dowling Varun Maram Keita Xagawa
2025
conf/pkc
The Security of Hash-and-Sign with Retry Against Superposition Attacks.
Haruhisa Kosuge Keita Xagawa
2024
journals/cic
On the Efficiency of Generic, Quantum Cryptographic Constructions.
Keita Xagawa
2024
conf/pkc
Probabilistic Hash-and-Sign with Retry in the Quantum Random Oracle Model.
Haruhisa Kosuge Keita Xagawa
2024
conf/eurocrypt
Signatures with Memory-Tight Security in the Quantum Random Oracle Model.
Keita Xagawa
2023
journals/tches
Multiple-Valued Plaintext-Checking Side-Channel Attacks on Post-Quantum KEMs.
Yutaro Tanaka Rei Ueno Keita Xagawa Akira Ito Junko Takahashi Naofumi Homma
2023
conf/latincrypt
Making the Identity-Based Diffie-Hellman Key Exchange Efficiently Revocable.
Kohei Nakagawa Atsushi Fujioka Akira Nagai Junichi Tomida Keita Xagawa Kan Yasuda
2023
conf/pkc
Post-quantum Anonymity of Kyber.
Varun Maram Keita Xagawa
2022
journals/tches
Curse of Re-encryption: A Generic Power/EM Analysis on Post-Quantum KEMs.
Rei Ueno Keita Xagawa Yutaro Tanaka Akira Ito Junko Takahashi Naofumi Homma
2022
conf/eurocrypt
Anonymity of NIST PQC Round 3 KEMs.
Keita Xagawa
2021
conf/asiacrypt
Fault-Injection Attacks Against NIST's Post-Quantum Cryptography Round 3 KEM Candidates.
Keita Xagawa Akira Ito Rei Ueno Junko Takahashi Naofumi Homma
2021
conf/sacrypt
The Boneh-Katz Transformation, Revisited: Pseudorandom/Obliviously-Samplable PKE from Lattices and Codes and Its Application.
Keita Xagawa
2020
conf/ccs
ModFalcon: Compact Signatures Based On Module-NTRU Lattices.
Chitchanok Chuengsatiansup Thomas Prest Damien Stehlé Alexandre Wallet Keita Xagawa
2020
conf/ctrsa
Post-quantum Provably-Secure Authentication and MAC from Mersenne Primes.
Houda Ferradi Keita Xagawa
2020
conf/asiacrypt
Non-committing Encryption with Constant Ciphertext Expansion from Standard Assumptions.
Yusuke Yoshida Fuyuki Kitagawa Keita Xagawa Keisuke Tanaka
2019
conf/asiacrypt
Quantum Random Oracle Model with Auxiliary Input.
Minki Hhan Keita Xagawa Takashi Yamakawa
2018
conf/ctrsa
Cryptanalysis of Compact-LWE.
Jonathan Bootle Mehdi Tibouchi Keita Xagawa
2018
conf/eurocrypt
Tightly-Secure Key-Encapsulation Mechanism in the Quantum Random Oracle Model.
Tsunekazu Saito Keita Xagawa Takashi Yamakawa
2017
conf/asiacrypt
Quantum Multicollision-Finding Algorithm.
Akinori Hosoyamada Yu Sasaki Keita Xagawa
2016
conf/asiacrypt
Public-Key Cryptosystems Resilient to Continuous Tampering and Leakage of Arbitrary Functions.
Eiichiro Fujisaki Keita Xagawa
2015
conf/latincrypt
Efficient RKA-Secure KEM and IBE Schemes Against Invertible Functions.
Eiichiro Fujisaki Keita Xagawa
2015
conf/acns
Accumulable Optimistic Fair Exchange from Verifiably Encrypted Homomorphic Signatures.
Jae Hong Seo Keita Emura Keita Xagawa Kazuki Yoneyama
2014
conf/pkc
Re-encryption, Functional Re-encryption, and Multi-hop Re-encryption: A Framework for Achieving Obfuscation-Based Security and Instantiations from Lattices.
Nishanth Chandran Melissa Chase Feng-Hao Liu Ryo Nishimaki Keita Xagawa
2014
conf/pkc
Practical Cryptanalysis of a Public-Key Encryption Scheme Based on New Multivariate Quadratic Assumptions.
Martin R. Albrecht Jean-Charles Faugère Robert Fitzpatrick Ludovic Perret Yosuke Todo Keita Xagawa
2013
conf/ccs
Practical and post-quantum authenticated key exchange from one-way secure key encapsulation mechanism.
Atsushi Fujioka Koutarou Suzuki Keita Xagawa Kazuki Yoneyama
2013
conf/pkc
Verifiably Encrypted Signatures with Short Keys Based on the Decisional Linear Problem and Obfuscation for Encrypted VES.
Ryo Nishimaki Keita Xagawa
2013
conf/pkc
Improved (Hierarchical) Inner-Product Encryption from Lattices.
Keita Xagawa
2012
conf/acns
Security Enhancements by OR-Proof in Identity-Based Identification.
Atsushi Fujioka Taiichi Saito Keita Xagawa
2012
conf/pkc
Strongly Secure Authenticated Key Exchange from Factoring, Codes, and Lattices.
Atsushi Fujioka Koutarou Suzuki Keita Xagawa Kazuki Yoneyama
2012
conf/icics
Security Enhancement of Identity-Based Identification with Reversibility.
Atsushi Fujioka Taiichi Saito Keita Xagawa
2012
conf/cans
Applicability of OR-Proof Techniques to Hierarchical Identity-Based Identification.
Atsushi Fujioka Taiichi Saito Keita Xagawa
2010
conf/pkc
Security of Encryption Schemes in Weakened Random Oracle Models.
Akinori Kawachi Akira Numayama Keisuke Tanaka Keita Xagawa
2009
conf/provsec
Zero-Knowledge Protocols for NTRU: Application to Identification and Proof of Plaintext Knowledge.
Keita Xagawa Keisuke Tanaka
2009
conf/asiacrypt
Efficient Public Key Encryption Based on Ideal Lattices.
Damien Stehlé Ron Steinfeld Keisuke Tanaka Keita Xagawa
2008
conf/asiacrypt
Concurrently Secure Identification Schemes Based on the Worst-Case Hardness of Lattice Problems.
Akinori Kawachi Keisuke Tanaka Keita Xagawa
2007
conf/pkc
Multi-bit Cryptosystems Based on Lattice Problems.
Akinori Kawachi Keisuke Tanaka Keita Xagawa

Coauthors

Akinori Hosoyamada (1)
Akinori Kawachi (3)
Akira Ito (3)
Akira Nagai (1)
Akira Numayama (1)
Alexandre Wallet (1)
Atsushi Fujioka (6)
Benjamin Bencina (1)
Benjamin Dowling (1)
Chitchanok Chuengsatiansup (1)
Damien Stehlé (2)
Eiichiro Fujisaki (2)
Feng-Hao Liu (1)
Fuyuki Kitagawa (1)
Haruhisa Kosuge (2)
Houda Ferradi (1)
Jae Hong Seo (1)
Jean-Charles Faugère (1)
Jonathan Bootle (1)
Junichi Tomida (1)
Junko Takahashi (3)
Kan Yasuda (1)
Kazuki Yoneyama (3)
Keisuke Tanaka (6)
Keita Emura (1)
Keita Xagawa (36)
Kohei Nakagawa (1)
Koutarou Suzuki (2)
Ludovic Perret (1)
Martin R. Albrecht (1)
Mehdi Tibouchi (1)
Melissa Chase (1)
Minki Hhan (1)
Naofumi Homma (3)
Nishanth Chandran (1)
Rei Ueno (3)
Robert Fitzpatrick (1)
Ron Steinfeld (1)
Ryo Nishimaki (2)
Taiichi Saito (3)
Takashi Yamakawa (2)
Thomas Prest (1)
Tsunekazu Saito (1)
Varun Maram (2)
Yosuke Todo (1)
Yu Sasaki (1)
Yusuke Yoshida (1)
Yutaro Tanaka (2)
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