We propose the signature scheme Hawk, a concrete instantiation of proposals to use the
Lattice Isomorphism Problem (LIP) as a foundation for cryptography that focuses on …

Lattice-based digital signature schemes following the hash-and-sign design paradigm of
Gentry, Peikert and Vaikuntanathan (GPV) tend to offer an attractive level of efficiency …

We present HAETAE (Hyperball bimodAl modulE rejecTion signAture schemE), a new lattice-
based signature scheme. Like the NIST-selected Dilithium signature scheme, HAETAE is …

The current widely used public‐key cryptosystems are vulnerable to quantum attacks. To
prepare for cybersecurity in the quantum era, some projects have been launched to call for …

Threshold signatures have recently seen a renewed interest due to applications in
cryptocurrency while NIST has released a call for multi-party threshold schemes, with a …

Ring signatures, a cryptographic primitive introduced by Rivest, Shamir and Tauman
(ASIACRYPT 2001), offer signer anonymity within dynamically formed user groups. Recent …

Lattice gadgets and the associated algorithms are the essential building blocks of lattice-
based cryptography. In the past decade, they have been applied to build versatile and …

We introduce a toolkit for transforming lattice-based hash-and-sign signature schemes into
masking-friendly signatures secure in the t-probing model. Until now, efficiently masking …

This paper presents Raccoon, a lattice-based signature scheme submitted to the NIST 2022
call for additional post-quantum signatures. Raccoon has the specificity of always being …

We present cryptanalysis of the inhomogenous short integer solution (ISIS) problem for
anomalously small moduli q by exploiting the geometry of BKZ reduced bases of q-ary …