This work introduces new key recovery attacks against the Rainbow signature scheme,
which is one of the three finalist signature schemes still in the NIST Post-Quantum …

Abstract The National Institute of Standards and Technology is in the process of selecting
publickey cryptographic algorithms through a public, competition-like process. The new …

The selection of parameters that offer best possible performance while simultaneously
guaranteeing a well-defined level of security is one of the most challenging tasks in …

Group-based cryptography is a relatively unexplored family in post-quantum cryptography,
and the so-called Semidirect Discrete Logarithm Problem (SDLP) is one of its most central …

We present here the analysis of a new perturbation, that seems to strengthen significantly
the security of some families of multivariate schemes. Thanks to this new perturbation, we …

We consider the problem of computing a grevlex Gröbner basis for the set Fr (M) of minors of
size r of an n× n matrix M of generic linear forms over a field of characteristic zero or large …

Abstract (that stands for Hidden Field Equations) belongs to multivariate cryptography and
was designed by Jacques Patarin in 1996 as a public key trapdoor suitable for encryption or …

The 4-volume sets LNCS 13507, 13508, 13509, 13510 constitutes the refereed proceedings
of the 42nd Annual International Cryptology Conference, CRYPTO 2022, which was held in …

The 27th International Conference on Practice and Theory of Public-Key Cryptography (PKC
2024) was held in Sydney, Australia, on April 15–17, 2024. It was sponsored by the …

Abstract Hash-and-Sign with Retry is a popular technique to design efficient signature
schemes from code-based or multivariate assumptions. Contrary to Hash-and-Sign …