Multivariate Public Key Cryptosystem (MPKC) seem to be promising toward future digital
security even in the presence of quantum adversaries. MPKCs derive their security from the …

We propose a new class of post-quantum digital signature schemes that:(a) derive their
security entirely from the security of symmetric-key primitives, believed to be quantum …

Zero-knowledge proofs of knowledge are useful tools to design signature schemes. The
ongoing effort to build a quantum computer urges the cryptography community to develop …

We show a lattice-based solution for commit-and-prove transparent circuit zero-knowledge
(ZK) with polylog-communication, the first not depending on PCPs. We start from …

The potential development of large-scale quantum computers is raising concerns among IT
and security research professionals due to their ability to solve (elliptic curve) discrete …

In this paper, we present the lattice-based signature scheme Dilithium, which is a
component of the CRYSTALS (Cryptographic Suite for Algebraic Lattices) suite that was …

Experts forecast that quantum computers can break classical cryptographic algorithms.
Scientists are develo** post quantum cryptographic (PQC) algorithms, that are …

Abstract The Oil and Vinegar signature scheme, proposed in 1997 by Patarin, is one of the
oldest and best understood multivariate quadratic signature schemes. It has excellent …

As quantum computing advances, current cryptographic protocols are increasingly
vulnerable to quantum attacks, particularly those based on Public Key Infrastructure (PKI) …

We show the following generic result: When a quantum query algorithm in the quantum
random-oracle model outputs a classical value t that is promised to be in some tight relation …