digital signature Archivi

New post-quantum digital signatures: NIST announces the third round candidates

Introduction On May 14, 2026, the National Institute of Standards and Technology (NIST) published the schemes selected for the third round of the additional process for standardizing post-quantum digital signatures. With the...

CROSS: Code-Based Digital Signature

15 Apr

Introduction In 2022, NIST launched a second standardization process for post-quantum digital signature schemes, with the goal of diversifying the mathematical foundations of the cryptographic portfolio with respect to the schemes already...

Multivariate signatures based on identification schemes

15 Feb

Introduction The goal of an identification protocol is to enable the verification of someone’s identity. More specifically, a Prover must demonstrate to an interlocutor, called the Verifier, that they...

UOV and its Variants: Digital Signatures Based on Multivariate Systems

24 Nov

In the previous exploration of multivariate cryptography, we examined how systems of polynomial equations over finite fields can form the basis for cryptographic schemes resistant to quantum computing attacks. The...

New post-quantum digital signature proposals: the second NIST competition

16 Oct

Introduction In response to the threat posed by quantum computers, in 2017 the National Institute of Standards and Technology (NIST) launched a standardization process for the selection of quantum-resistant public-key cryptography algorithms....

Falcon: digital signature based on NTRU

31 Jul

Introduction NIST’s Post-Quantum standardization process has identified two cryptographic schemes based on lattice theory within digital signatures: CRYSTALS-Dilithium and Falcon. Within modern cryptographic communication protocols, these solutions will replace the...

Digital signature algorithms: present and future

21 Oct

Introduction and general structure In many ways, digital signatures are the digital equivalent of the handwritten signatures we all use every day. However, the main difference between the two is...