Code-Based Cryptography


An extension of Overbeck's attack with an application to cryptanalysis of Twisted Gabidulin-based schemes
Alain Couvreur and Ilaria Zappatore


Cryptanalysis of rank-metric schemes based on distorted Gabidulin codes
Pierre Briaud and Pierre Loidreau


A High-Performance Hardware Implementation of the LESS Digital Signature Scheme
Luke Beckwith, Robert Wallace, Kamyar Mohajerani and Kris Gaj


Wave Parameter Selection
Nicolas Sendrier


Group-Action-Based Cryptography


SPDH-Sign: towards Efficient, Post-quantum, Group-based Signatures
Christopher Battarbee, Delaram Kahrobaei, Ludovic Perret and Siamak F. Shahandashti


Isogeny-Based Cryptography


A Tightly Secure Identity-based Signature Scheme from Isogenies
Jiawei Chen, Hyungrok Jo, Shingo Sato and Junji Shikata


Lattice-Based Cryptography


New NTRU Records with Improved Lattice Bases
Elena Kirshanova, Alexander May and Julian Nowakowski


On the Hardness of Scheme-Switching Between SIMD FHE Schemes
Karim Eldefrawy, Nicholas Genise and Nathan Manohar


Classical and quantum 3 and 4-sieves to solve SVP with low memory
André Chailloux and Johanna Loyer


NTRU in Quaternion Algebras of Bounded Discriminant
Cong Ling and Andrew Mendelsohn


Do not bound to a single position: near-optimal multi-positional mismatch attacks against Syber and Saber
Qian Guo and Erik Mårtensson


NTWE: A Natural Combination of NTRU and LWE
Joel Gärtner


Multivariate Cryptography


Fast Enumeration Algorithm For Multivariate Polynomials Over General Finite Fields
Hiroki Furue and Tsuyoshi Takagi


DME: a full encryption, signature and KEM multivariate public key cryptosystem
Ignacio Luengo, Martín Avendaño and Pilar Coscojuela


Quantum Algorithms, Cryptanalysis and Models


On the Quantum Security of HAWK
Serge Fehr and Yu-Hsuan Huang


Non-Observable Quantum Random Oracle Model
Navid Alamati, Varun Maram and Daniel Masny


Characterizing the qIND-qCPA (In)security of the CBC, CFB, OFB and CTR Modes of Operation
Tristan Nemoz, Zoé Amblard and Aurélien Dupin


Breaking the Quadratic Barrier: Quantum Cryptanalysis of Milenage, Telecommunications' Cryptographic Backbone
Vincent Quentin Ulitzsch and Jean-Pierre Seifert


Time and Query Complexity Tradeoffs for the Dihedral Coset Problem
Maxime Remaud, André Schrottenloher and Jean-Pierre Tillich


Post-Quantum Protocols


Post-Quantum Signatures in DNSSEC via Request-Based Fragmentation
Jason Goertzen and Douglas Stebila


Hash-based Direct Anonymous Attestation
Liqun Chen, Changyu Dong, Nada El Kassem, Christopher J.P. Newton and Yalan Wang


Muckle+: End-to-End Hybrid Authenticated Key Exchanges
Sonja Bruckner, Sebastian Ramacher and Christoph Striecks


Side-Channel Cryptanalysis and Countermeasures


WrapQ: Side-Channel Secure Key Management for Post-Quantum Cryptography
Markku-Juhani O. Saarinen


Faulting Winternitz One-Time Signatures to forge LMS, XMSS, or SPHINCS+ signatures
Alexander Wagner, Vera Wesselkamp, Felix Oberhansl, Marc Schink and Emanuele Strieder


Breaking and Protecting the Crystal: Side-Channel Analysis of Dilithium in Hardware
Hauke Steffen, Georg Land, Lucie Kogelheide and Tim Güneysu