Two multivariate digital signature schemes, Rainbow and GeMSS, made it into the third
round of the NIST PQC competition. However, neither made its way to being a standard due …

We present the digital signature scheme, MQ-Sign, based on UOV whose security relies on
the hardness of solving large systems of multivariate quadratic equations. MQ-Sign supports …

Public-key cryptography (PKC) provides confidentiality, data integrity, and user
authentication. Particularly, nonrepudiation, authentication and integrity of transmitted …

As the industry prepares for the transition to post-quantum secure public key cryptographic
algorithms, vulnerability analysis of their implementations is gaining importance. A …

MAYO is a topical modification of the established multivariate signature scheme Unbalanced
Oil and Vinegar (UOV), with a significantly reduced public key size while maintaining the …

Abstract Unbalanced Oil and Vinegar is a multivariate signature scheme that was introduced
in 1999. Most multivariate candidates for signature schemes at the NIST standardization …

Digital signature schemes based on multivariate-and code-based hard problems are
promising alternatives for lattice-based signature schemes due to their smaller signature …

In this paper we describe attacks on the UOV-based signature scheme called MQ-Sign. MQ-
Sign was submitted by Shim, Kim, and An as aa first-round candidate for standardization in …

Multivariate quadratic equation-based cryptographic algorithms are one of the promising
post-quantum alternatives to current public-key cryptographic algorithms based on the …

This report covers our work on the submissions to the KpqC competition. We analyzed all
submitted KEMs and signature systems. For those that withstood cryptanalysis, we checked …