Ward Beullens

Publication Activity (10 Years)

Years Active: 2017-2024
Publications (10 Years): 53

Top Topics

Blind Signature

Signature Scheme

Top Venues

IACR Cryptol. ePrint Arch.

IACR Trans. Cryptogr. Hardw. Embed. Syst.

Publications

Ward Beullens, Fabio Campos, Sofía Celi, Basil Hess, Matthias J. Kannwischer
Nibbling MAYO: Optimized Implementations for AVX2 and Cortex-M4. IACR Trans. Cryptogr. Hardw. Embed. Syst. 2024 (2) (2024)
Ward Beullens
Multivariate Blind Signatures Revisited. IACR Cryptol. ePrint Arch. 2024 (2024)
Ward Beullens
Improved Cryptanalysis of SNOVA. IACR Cryptol. ePrint Arch. 2024 (2024)
Ward Beullens, Pierre Briaud, Morten Øygarden
A Security Analysis of Restricted Syndrome Decoding Problems. IACR Cryptol. ePrint Arch. 2024 (2024)
Carsten Baum, Ward Beullens, Shibam Mukherjee, Emmanuela Orsini, Sebastian Ramacher, Christian Rechberger, Lawrence Roy, Peter Scholl
One Tree to Rule Them All: Optimizing GGM Trees and OWFs for Post-Quantum Signatures. IACR Cryptol. ePrint Arch. 2024 (2024)
Ward Beullens, Lucas Dodgson, Sebastian H. Faller, Julia Hesse
The 2Hash OPRF Framework and Efficient Post-Quantum Instantiations. IACR Cryptol. ePrint Arch. 2024 (2024)
Ward Beullens, Luca De Feo, Steven D. Galbraith, Christophe Petit
Proving knowledge of isogenies - A survey. IACR Cryptol. ePrint Arch. 2023 (2023)
Ward Beullens, Samuel Dobson, Shuichi Katsumata, Yi-Fu Lai, Federico Pintore
Group signatures and more from isogenies and lattices: generic, simple, and efficient. Des. Codes Cryptogr. 91 (6) (2023)
Ward Beullens, Ming-Shing Chen, Shih-Hao Hung, Matthias J. Kannwischer, Bo-Yuan Peng, Cheng-Jhih Shih, Bo-Yin Yang
Oil and Vinegar: Modern Parameters and Implementations. IACR Trans. Cryptogr. Hardw. Embed. Syst. 2023 (3) (2023)
Ward Beullens, Vadim Lyubashevsky, Ngoc Khanh Nguyen, Gregor Seiler
Lattice-Based Blind Signatures: Short, Efficient, and Round-Optimal. IACR Cryptol. ePrint Arch. 2023 (2023)
Ward Beullens, Fabio Campos, Sofía Celi, Basil Hess, Matthias J. Kannwischer
Nibbling MAYO: Optimized Implementations for AVX2 and Cortex-M4. IACR Cryptol. ePrint Arch. 2023 (2023)
Ward Beullens, Vadim Lyubashevsky, Ngoc Khanh Nguyen, Gregor Seiler
Lattice-Based Blind Signatures: Short, Efficient, and Round-Optimal. CCS (2023)
Ward Beullens, Ming-Shing Chen, Shih-Hao Hung, Matthias J. Kannwischer, Bo-Yuan Peng, Cheng-Jhih Shih, Bo-Yin Yang
Oil and Vinegar: Modern Parameters and Implementations. IACR Cryptol. ePrint Arch. 2023 (2023)
Ward Beullens
Graph-Theoretic Algorithms for the Alternating Trilinear Form Equivalence Problem. CRYPTO (3) (2023)
Ward Beullens, Luca De Feo, Steven D. Galbraith, Christophe Petit
Proving knowledge of isogenies: a survey. Des. Codes Cryptogr. 91 (11) (2023)
Ward Beullens, Samuel Dobson, Shuichi Katsumata, Yi-Fu Lai, Federico Pintore
Group Signatures and More from Isogenies and Lattices: Generic, Simple, and Efficient. EUROCRYPT (2) (2022)
Ward Beullens
Breaking Rainbow Takes a Weekend on a Laptop. CRYPTO (2) (2022)
Guillaume Barbu, Ward Beullens, Emmanuelle Dottax, Christophe Giraud, Agathe Houzelot, Chaoyun Li, Mohammad Mahzoun, Adrián Ranea, Jianrui Xie
ECDSA White-Box Implementations: Attacks and Designs from CHES 2021 Challenge. IACR Trans. Cryptogr. Hardw. Embed. Syst. 2022 (4) (2022)
Ward Beullens
Graph-Theoretic Algorithms for the Alternating Trilinear Form Equivalence Problem. IACR Cryptol. ePrint Arch. 2022 (2022)
Ward Beullens, Gregor Seiler
LaBRADOR: Compact Proofs for R1CS from Module-SIS. IACR Cryptol. ePrint Arch. 2022 (2022)
Ward Beullens
Breaking Rainbow Takes a Weekend on a Laptop. IACR Cryptol. ePrint Arch. 2022 (2022)
Ward Beullens, Gregor Seiler
LaBRADOR: Compact Proofs for R1CS from Module-SIS. CRYPTO (5) (2022)
Guillaume Barbu, Ward Beullens, Emmanuelle Dottax, Christophe Giraud, Agathe Houzelot, Chaoyun Li, Mohammad Mahzoun, Adrián Ranea, Jianrui Xie
ECDSA White-Box Implementations: Attacks and Designs from WhibOx 2021 Contest. IACR Cryptol. ePrint Arch. 2022 (2022)
Ward Beullens
MAYO: Practical Post-quantum Signatures from Oil-and-Vinegar Maps. SAC (2021)
Ward Beullens, Samuel Dobson, Shuichi Katsumata, Yi-Fu Lai, Federico Pintore
Group Signatures and More from Isogenies and Lattices: Generic, Simple, and Efficient. IACR Cryptol. ePrint Arch. 2021 (2021)
Ward Beullens, Lucas Disson, Robi Pedersen, Frederik Vercauteren
CSI-RAShi: Distributed Key Generation for CSIDH. PQCrypto (2021)
Ward Beullens
Improved Cryptanalysis of UOV and Rainbow. EUROCRYPT (1) (2021)
Ward Beullens
MAYO: Practical Post-Quantum Signatures from Oil-and-Vinegar Maps. IACR Cryptol. ePrint Arch. 2021 (2021)
Ward Beullens
Not Enough LESS: An Improved Algorithm for Solving Code Equivalence Problems over $\mathbb {F}_q$. SAC (2020)
Ward Beullens, Tim Beyne, Aleksei Udovenko, Giuseppe Vitto
Cryptanalysis of the Legendre PRF and Generalizations. IACR Trans. Symmetric Cryptol. 2020 (1) (2020)
Ward Beullens
Improved Cryptanalysis of UOV and Rainbow. IACR Cryptol. ePrint Arch. 2020 (2020)
Ward Beullens, Shuichi Katsumata, Federico Pintore
Calamari and Falafl: Logarithmic (Linkable) Ring Signatures from Isogenies and Lattices. ASIACRYPT (2) (2020)
Ward Beullens
. IACR Cryptol. ePrint Arch. 2020 (2020)
Ward Beullens
Sigma Protocols for MQ, PKP and SIS, and Fishy Signature Schemes. EUROCRYPT (3) (2020)
Ward Beullens, Shuichi Katsumata, Federico Pintore
Calamari and Falafl: Logarithmic (Linkable) Ring Signatures from Isogenies and Lattices. IACR Cryptol. ePrint Arch. 2020 (2020)
Ward Beullens, Cyprien Delpech de Saint Guilhem
LegRoast: Efficient Post-quantum Signatures from the Legendre PRF. PQCrypto (2020)
Ward Beullens, Cyprien Delpech de Saint Guilhem
LegRoast: Efficient post-quantum signatures from the Legendre PRF. IACR Cryptol. ePrint Arch. 2020 (2020)
Ward Beullens, Lucas Disson, Robi Pedersen, Frederik Vercauteren
CSI-RAShi: Distributed key generation for CSIDH. IACR Cryptol. ePrint Arch. 2020 (2020)
Ward Beullens, Thorsten Kleinjung, Frederik Vercauteren
CSI-FiSh: Efficient Isogeny Based Signatures Through Class Group Computations. ASIACRYPT (1) (2019)
Ward Beullens, Tim Beyne, Aleksei Udovenko, Giuseppe Vitto
Cryptanalysis of the Legendre PRF and generalizations. IACR Cryptol. ePrint Arch. 2019 (2019)
Ward Beullens, Hoeteck Wee
Obfuscating Simple Functionalities from Knowledge Assumptions. Public Key Cryptography (2) (2019)
Ward Beullens
On sigma protocols with helper for MQ and PKP, fishy signature schemes and more. IACR Cryptol. ePrint Arch. 2019 (2019)
Ward Beullens, Hoeteck Wee
Obfuscating simple functionalities from knowledge assumptions. IACR Cryptol. ePrint Arch. 2019 (2019)
Ward Beullens, Thorsten Kleinjung, Frederik Vercauteren
CSI-FiSh: Efficient Isogeny based Signatures through Class Group Computations. IACR Cryptol. ePrint Arch. 2019 (2019)
Ward Beullens, Jean-Charles Faugère, Eliane Koussa, Gilles Macario-Rat, Jacques Patarin, Ludovic Perret
PKP-Based Signature Scheme. INDOCRYPT (2019)
Ward Beullens, Simon R. Blackburn
Practical attacks against the Walnut digital signature scheme. IACR Cryptol. ePrint Arch. 2018 (2018)
Ward Beullens, Bart Preneel, Alan Szepieniec
Public Key Compression for Constrained Linear Signature Schemes. IACR Cryptol. ePrint Arch. 2018 (2018)
Ward Beullens, Bart Preneel, Alan Szepieniec
Public Key Compression for Constrained Linear Signature Schemes. SAC (2018)
Ward Beullens, Simon R. Blackburn
Practical Attacks Against the Walnut Digital Signature Scheme. ASIACRYPT (1) (2018)
Alan Szepieniec, Ward Beullens, Bart Preneel
MQ Signatures for PKI. PQCrypto (2017)
Alan Szepieniec, Ward Beullens, Bart Preneel
MQ Signatures for PKI. IACR Cryptol. ePrint Arch. 2017 (2017)
Ward Beullens, Bart Preneel
Field lifting for smaller UOV public keys. IACR Cryptol. ePrint Arch. 2017 (2017)
Ward Beullens, Bart Preneel
Field Lifting for Smaller UOV Public Keys. INDOCRYPT (2017)