Ward Beullens

61 papers A* 1C 3Misc 5Journal 37Unranked 15
YearRankTypeTitle / Venue / Authors
2026 J jnl
Concretely Efficient Blind Signatures Based on VOLE-in-the-Head Proofs and the MAYO Trapdoor.
IACR Cryptol. ePrint Arch.
Carsten Baum, Marvin Beckmann, Ward Beullens, Shibam Mukherjee, Christian Rechberger
2026 J jnl
Shorter, Tighter, FAESTer: Optimizations and Improved (QROM) Analysis for VOLE-in-the-Head Signatures.
IACR Cryptol. ePrint Arch.
Carsten Baum, Ward Beullens, Lennart Braun, Cyprien Delpech de Saint Guilhem, Michael Klooß, Christian Majenz, Shibam Mukherjee, Emmanuela Orsini, Sebastian Ramacher, Christian Rechberger, Lawrence Roy, Peter Scholl
2025 — conf
Improved Cryptanalysis of SNOVA.
EUROCRYPT (6)
Ward Beullens
2025 — conf
Shorter, Tighter, FAESTer: Optimizations and Improved (QROM) Analysis for VOLE-in-the-Head Signatures.
CRYPTO (6)
Carsten Baum, Ward Beullens, Lennart Braun, Cyprien Delpech de Saint Guilhem, Michael Klooß, Christian Majenz, Shibam Mukherjee, Emmanuela Orsini, Sebastian Ramacher, Christian Rechberger, Lawrence Roy, Peter Scholl
2025 — conf
The 2Hash OPRF Framework and Efficient Post-quantum Instantiations.
EUROCRYPT (8)
Ward Beullens, Lucas Dodgson, Sebastian H. Faller, Julia Hesse
2024 J jnl
A Security Analysis of Restricted Syndrome Decoding Problems.
IACR Commun. Cryptol.
Ward Beullens, Pierre Briaud, Morten Øygarden
2024 J jnl
A Security Analysis of Restricted Syndrome Decoding Problems.
IACR Cryptol. ePrint Arch.
Ward Beullens, Pierre Briaud, Morten Øygarden
2024 J jnl
Improved Cryptanalysis of SNOVA.
IACR Cryptol. ePrint Arch.
Ward Beullens
2024 — conf
Multivariate Blind Signatures Revisited.
SAC (1)
Ward Beullens
2024 J jnl
Multivariate Blind Signatures Revisited.
IACR Cryptol. ePrint Arch.
Ward Beullens
2024 J jnl
Nibbling MAYO: Optimized Implementations for AVX2 and Cortex-M4.
IACR Trans. Cryptogr. Hardw. Embed. Syst.
Ward Beullens, Fabio Campos, Sofía Celi, Basil Hess, Matthias J. Kannwischer
2024 — conf
One Tree to Rule Them All: Optimizing GGM Trees and OWFs for Post-Quantum Signatures.
ASIACRYPT (1)
Carsten Baum, Ward Beullens, Shibam Mukherjee, Emmanuela Orsini, Sebastian Ramacher, Christian Rechberger, Lawrence Roy, Peter Scholl
2024 J jnl
One Tree to Rule Them All: Optimizing GGM Trees and OWFs for Post-Quantum Signatures.
IACR Cryptol. ePrint Arch.
Carsten Baum, Ward Beullens, Shibam Mukherjee, Emmanuela Orsini, Sebastian Ramacher, Christian Rechberger, Lawrence Roy, Peter Scholl
2024 J jnl
The 2Hash OPRF Framework and Efficient Post-Quantum Instantiations.
IACR Cryptol. ePrint Arch.
Ward Beullens, Lucas Dodgson, Sebastian H. Faller, Julia Hesse
2023 — conf
Graph-Theoretic Algorithms for the Alternating Trilinear Form Equivalence Problem.
CRYPTO (3)
Ward Beullens
2023 J jnl
Group signatures and more from isogenies and lattices: generic, simple, and efficient.
Des. Codes Cryptogr.
Ward Beullens, Samuel Dobson, Shuichi Katsumata, Yi-Fu Lai, Federico Pintore
2023 — conf
LaBRADOR: Compact Proofs for R1CS from Module-SIS.
CRYPTO (5)
Ward Beullens, Gregor Seiler
2023 A* conf
Lattice-Based Blind Signatures: Short, Efficient, and Round-Optimal.
CCS
Ward Beullens, Vadim Lyubashevsky, Ngoc Khanh Nguyen, Gregor Seiler
2023 J jnl
Lattice-Based Blind Signatures: Short, Efficient, and Round-Optimal.
IACR Cryptol. ePrint Arch.
Ward Beullens, Vadim Lyubashevsky, Ngoc Khanh Nguyen, Gregor Seiler
2023 J jnl
Nibbling MAYO: Optimized Implementations for AVX2 and Cortex-M4.
IACR Cryptol. ePrint Arch.
Ward Beullens, Fabio Campos, Sofía Celi, Basil Hess, Matthias J. Kannwischer
2023 J jnl
Oil and Vinegar: Modern Parameters and Implementations.
IACR Cryptol. ePrint Arch.
Ward Beullens, Ming-Shing Chen, Shih-Hao Hung, Matthias J. Kannwischer, Bo-Yuan Peng, Cheng-Jhih Shih, Bo-Yin Yang
2023 J jnl
Oil and Vinegar: Modern Parameters and Implementations.
IACR Trans. Cryptogr. Hardw. Embed. Syst.
Ward Beullens, Ming-Shing Chen, Shih-Hao Hung, Matthias J. Kannwischer, Bo-Yuan Peng, Cheng-Jhih Shih, Bo-Yin Yang
2023 J jnl
Proving knowledge of isogenies - A survey.
IACR Cryptol. ePrint Arch.
Ward Beullens, Luca De Feo, Steven D. Galbraith, Christophe Petit
2023 J jnl
Proving knowledge of isogenies: a survey.
Des. Codes Cryptogr.
Ward Beullens, Luca De Feo, Steven D. Galbraith, Christophe Petit
2022 — conf
Breaking Rainbow Takes a Weekend on a Laptop.
CRYPTO (2)
Ward Beullens
2022 J jnl
Breaking Rainbow Takes a Weekend on a Laptop.
IACR Cryptol. ePrint Arch.
Ward Beullens
2022 J jnl
ECDSA White-Box Implementations: Attacks and Designs from CHES 2021 Challenge.
IACR Trans. Cryptogr. Hardw. Embed. Syst.
Guillaume Barbu, Ward Beullens, Emmanuelle Dottax, Christophe Giraud, Agathe Houzelot, Chaoyun Li, Mohammad Mahzoun, Adrián Ranea, Jianrui Xie
2022 J jnl
ECDSA White-Box Implementations: Attacks and Designs from WhibOx 2021 Contest.
IACR Cryptol. ePrint Arch.
Guillaume Barbu, Ward Beullens, Emmanuelle Dottax, Christophe Giraud, Agathe Houzelot, Chaoyun Li, Mohammad Mahzoun, Adrián Ranea, Jianrui Xie
2022 J jnl
Graph-Theoretic Algorithms for the Alternating Trilinear Form Equivalence Problem.
IACR Cryptol. ePrint Arch.
Ward Beullens
2022 — conf
Group Signatures and More from Isogenies and Lattices: Generic, Simple, and Efficient.
EUROCRYPT (2)
Ward Beullens, Samuel Dobson, Shuichi Katsumata, Yi-Fu Lai, Federico Pintore
2022 J jnl
LaBRADOR: Compact Proofs for R1CS from Module-SIS.
IACR Cryptol. ePrint Arch.
Ward Beullens, Gregor Seiler
2021 C conf
CSI-RAShi: Distributed Key Generation for CSIDH.
PQCrypto
Ward Beullens, Lucas Disson, Robi Pedersen, Frederik Vercauteren
2021 J jnl
Group Signatures and More from Isogenies and Lattices: Generic, Simple, and Efficient.
IACR Cryptol. ePrint Arch.
Ward Beullens, Samuel Dobson, Shuichi Katsumata, Yi-Fu Lai, Federico Pintore
2021 — conf
Improved Cryptanalysis of UOV and Rainbow.
EUROCRYPT (1)
Ward Beullens
2021 J jnl
MAYO: Practical Post-Quantum Signatures from Oil-and-Vinegar Maps.
IACR Cryptol. ePrint Arch.
Ward Beullens
2021 Misc conf
MAYO: Practical Post-quantum Signatures from Oil-and-Vinegar Maps.
SAC
Ward Beullens
2020 J jnl
CSI-RAShi: Distributed key generation for CSIDH.
IACR Cryptol. ePrint Arch.
Ward Beullens, Lucas Disson, Robi Pedersen, Frederik Vercauteren
2020 — conf
Calamari and Falafl: Logarithmic (Linkable) Ring Signatures from Isogenies and Lattices.
ASIACRYPT (2)
Ward Beullens, Shuichi Katsumata, Federico Pintore
2020 J jnl
Calamari and Falafl: Logarithmic (Linkable) Ring Signatures from Isogenies and Lattices.
IACR Cryptol. ePrint Arch.
Ward Beullens, Shuichi Katsumata, Federico Pintore
2020 J jnl
Cryptanalysis of the Legendre PRF and Generalizations.
IACR Trans. Symmetric Cryptol.
Ward Beullens, Tim Beyne, Aleksei Udovenko, Giuseppe Vitto
2020 J jnl
Improved Cryptanalysis of UOV and Rainbow.
IACR Cryptol. ePrint Arch.
Ward Beullens
2020 C conf
LegRoast: Efficient Post-quantum Signatures from the Legendre PRF.
PQCrypto
Ward Beullens, Cyprien Delpech de Saint Guilhem
2020 J jnl
LegRoast: Efficient post-quantum signatures from the Legendre PRF.
IACR Cryptol. ePrint Arch.
Ward Beullens, Cyprien Delpech de Saint Guilhem
2020 Misc conf
Not Enough LESS: An Improved Algorithm for Solving Code Equivalence Problems over $\mathbb {F}_q$.
SAC
Ward Beullens
2020 J jnl
Not enough LESS: An improved algorithm for solving Code Equivalence Problems over 픽
IACR Cryptol. ePrint Arch.
Ward Beullens
2020 — conf
Sigma Protocols for MQ, PKP and SIS, and Fishy Signature Schemes.
EUROCRYPT (3)
Ward Beullens
2019 — conf
CSI-FiSh: Efficient Isogeny Based Signatures Through Class Group Computations.
ASIACRYPT (1)
Ward Beullens, Thorsten Kleinjung, Frederik Vercauteren
2019 J jnl
CSI-FiSh: Efficient Isogeny based Signatures through Class Group Computations.
IACR Cryptol. ePrint Arch.
Ward Beullens, Thorsten Kleinjung, Frederik Vercauteren
2019 J jnl
Cryptanalysis of the Legendre PRF and generalizations.
IACR Cryptol. ePrint Arch.
Ward Beullens, Tim Beyne, Aleksei Udovenko, Giuseppe Vitto
2019 — conf
Obfuscating Simple Functionalities from Knowledge Assumptions.
Public Key Cryptography (2)
Ward Beullens, Hoeteck Wee
2019 J jnl
Obfuscating simple functionalities from knowledge assumptions.
IACR Cryptol. ePrint Arch.
Ward Beullens, Hoeteck Wee
2019 J jnl
On sigma protocols with helper for MQ and PKP, fishy signature schemes and more.
IACR Cryptol. ePrint Arch.
Ward Beullens
2019 Misc conf
PKP-Based Signature Scheme.
INDOCRYPT
Ward Beullens, Jean-Charles Faugère, Eliane Koussa, Gilles Macario-Rat, Jacques Patarin, Ludovic Perret
2018 — conf
Practical Attacks Against the Walnut Digital Signature Scheme.
ASIACRYPT (1)
Ward Beullens, Simon R. Blackburn
2018 J jnl
Practical attacks against the Walnut digital signature scheme.
IACR Cryptol. ePrint Arch.
Ward Beullens, Simon R. Blackburn
2018 Misc conf
Public Key Compression for Constrained Linear Signature Schemes.
SAC
Ward Beullens, Bart Preneel, Alan Szepieniec
2018 J jnl
Public Key Compression for Constrained Linear Signature Schemes.
IACR Cryptol. ePrint Arch.
Ward Beullens, Bart Preneel, Alan Szepieniec
2017 Misc conf
Field Lifting for Smaller UOV Public Keys.
INDOCRYPT
Ward Beullens, Bart Preneel
2017 J jnl
Field lifting for smaller UOV public keys.
IACR Cryptol. ePrint Arch.
Ward Beullens, Bart Preneel
2017 C conf
MQ Signatures for PKI.
PQCrypto
Alan Szepieniec, Ward Beullens, Bart Preneel
2017 J jnl
MQ Signatures for PKI.
IACR Cryptol. ePrint Arch.
Alan Szepieniec, Ward Beullens, Bart Preneel