Field lifting for smaller UOV public keys. - Ward Beullens; Bart Preneel (IACR Cryptol. ePrint Arch., 2017)

MQ Signatures for PKI. - Alan Szepieniec; Ward Beullens; Bart Preneel (IACR Cryptol. ePrint Arch., 2017)

Practical attacks against the Walnut digital signature scheme. - Ward Beullens; Simon R. Blackburn (IACR Cryptol. ePrint Arch., 2018)

Public Key Compression for Constrained Linear Signature Schemes. - Ward Beullens; Bart Preneel; Alan Szepieniec (IACR Cryptol. ePrint Arch., 2018)

PKP-Based Signature Scheme. - Ward Beullens; Jean-Charles Faugère; Eliane Koussa; Gilles Macario-Rat; Jacques Patarin; Ludovic Perret (INDOCRYPT, 2019)

On sigma protocols with helper for MQ and PKP, fishy signature schemes and more. - Ward Beullens (IACR Cryptol. ePrint Arch., 2019)

CSI-FiSh: Efficient Isogeny based Signatures through Class Group Computations. - Ward Beullens; Thorsten Kleinjung; Frederik Vercauteren (IACR Cryptol. ePrint Arch., 2019)

Obfuscating simple functionalities from knowledge assumptions. - Ward Beullens; Hoeteck Wee (IACR Cryptol. ePrint Arch., 2019)

Sigma Protocols for MQ, PKP and SIS, and Fishy Signature Schemes. - Ward Beullens (EUROCRYPT (3), 2020)

Not Enough LESS: An Improved Algorithm for Solving Code Equivalence Problems over $ mathbb {F}_q$. - Ward Beullens (SAC, 2020)

Not enough LESS: An improved algorithm for solving Code Equivalence Problems over 픽q. - Ward Beullens (IACR Cryptol. ePrint Arch., 2020)

Improved Cryptanalysis of UOV and Rainbow. - Ward Beullens (IACR Cryptol. ePrint Arch., 2020)

CSI-RAShi: Distributed key generation for CSIDH. - Ward Beullens; Lucas Disson; Robi Pedersen; Frederik Vercauteren (IACR Cryptol. ePrint Arch., 2020)

LegRoast: Efficient post-quantum signatures from the Legendre PRF. - Ward Beullens; Cyprien Delpech de Saint Guilhem (IACR Cryptol. ePrint Arch., 2020)

Calamari and Falafl: Logarithmic (Linkable) Ring Signatures from Isogenies and Lattices. - Ward Beullens; Shuichi Katsumata; Federico Pintore (IACR Cryptol. ePrint Arch., 2020)

Cryptanalysis of the Legendre PRF and Generalizations. - Ward Beullens; Tim Beyne; Aleksei Udovenko; Giuseppe Vitto (IACR Trans. Symmetric Cryptol., 2020)

MAYO: Practical Post-Quantum Signatures from Oil-and-Vinegar Maps. - Ward Beullens (IACR Cryptol. ePrint Arch., 2021)

ECDSA White-Box Implementations: Attacks and Designs from WhibOx 2021 Contest. - Guillaume Barbu; Ward Beullens; Emmanuelle Dottax; Christophe Giraud 001; Agathe Houzelot; Chaoyun Li; Mohammad Mahzoun; Adrián Ranea; Jianrui Xie (IACR Cryptol. ePrint Arch., 2022)

Breaking Rainbow Takes a Weekend on a Laptop. - Ward Beullens (IACR Cryptol. ePrint Arch., 2022)

Graph-Theoretic Algorithms for the Alternating Trilinear Form Equivalence Problem. - Ward Beullens (IACR Cryptol. ePrint Arch., 2022)

LaBRADOR: Compact Proofs for R1CS from Module-SIS. - Ward Beullens; Gregor Seiler (IACR Cryptol. ePrint Arch., 2022)

ECDSA White-Box Implementations: Attacks and Designs from CHES 2021 Challenge. - Guillaume Barbu; Ward Beullens; Emmanuelle Dottax; Christophe Giraud 001; Agathe Houzelot; Chaoyun Li; Mohammad Mahzoun; Adrián Ranea; Jianrui Xie (IACR Trans. Cryptogr. Hardw. Embed. Syst., 2022)

Group signatures and more from isogenies and lattices: generic, simple, and efficient. - Ward Beullens; Samuel Dobson; Shuichi Katsumata; Yi-Fu Lai; Federico Pintore (Des. Codes Cryptogr., 2023)

Lattice-Based Blind Signatures: Short, Efficient, and Round-Optimal. - Ward Beullens; Vadim Lyubashevsky; Ngoc Khanh Nguyen 001; Gregor Seiler (IACR Cryptol. ePrint Arch., 2023)

Oil and Vinegar: Modern Parameters and Implementations. - Ward Beullens; Ming-Shing Chen; Shih-Hao Hung; Matthias J. Kannwischer; Bo-Yuan Peng; Cheng-Jhih Shih; Bo-Yin Yang (IACR Trans. Cryptogr. Hardw. Embed. Syst., 2023)

Proving knowledge of isogenies: a survey. - Ward Beullens; Luca De Feo; Steven D. Galbraith; Christophe Petit 001 (Des. Codes Cryptogr., 2023)

A Security Analysis of Restricted Syndrome Decoding Problems. - Ward Beullens; Pierre Briaud; Morten Øygarden (IACR Commun. Cryptol., 2024)

One Tree to Rule Them All: Optimizing GGM Trees and OWFs for Post-Quantum Signatures. - Carsten Baum; Ward Beullens; Shibam Mukherjee; Emmanuela Orsini; Sebastian Ramacher; Christian Rechberger; Lawrence Roy; Peter Scholl (IACR Cryptol. ePrint Arch., 2024)

Multivariate Blind Signatures Revisited. - Ward Beullens (IACR Cryptol. ePrint Arch., 2024)

Improved Cryptanalysis of SNOVA. - Ward Beullens (IACR Cryptol. ePrint Arch., 2024)

The 2Hash OPRF Framework and Efficient Post-Quantum Instantiations. - Ward Beullens; Lucas Dodgson; Sebastian H. Faller; Julia Hesse (IACR Cryptol. ePrint Arch., 2024)

Nibbling MAYO: Optimized Implementations for AVX2 and Cortex-M4. - Ward Beullens; Fabio Campos; Sofía Celi; Basil Hess; Matthias J. Kannwischer (IACR Trans. Cryptogr. Hardw. Embed. Syst., 2024)

Shorter, Tighter, FAESTer: Optimizations and Improved (QROM) Analysis for VOLE-in-the-Head Signatures. - 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 (CRYPTO (6), 2025)