We optimise the verification of the SQIsign signature scheme. By using field extensions in
the signing procedure, we are able to significantly increase the amount of available rational …

SQIsign is a well-known post-quantum signature scheme due to its small combined
signature and public-key size. However, SQIsign suffers from notably long signing times …

This work expands the machinery we have for isogeny-based cryptography in genus 2 by
develo** a toolbox of several essential algorithms for Kummer surfaces, the dimension-2 …

Isogeny-based schemes often come with special requirements on the field of definition of the
involved elliptic curves. For instance, the efficiency of SQIsign, a promising candidate in the …

We present a verifiable delay function based on isogenies of supersingular elliptic curves,
using Deuring correspondence and computation of endomorphism rings for the delay. For …

양자컴퓨터의 급속한 발전으로 인해 현재 사용되는 암호화 알고리즘들은 위협에 직면해 있다.
이를 대비하여 양자컴퓨터로부터 안전한 양자내성암호 알고리즘을 개발하기 위해 미국 NIST …

In the ongoing NIST competition for additional post-quantum signatures, SQIsign stands out
as the only candidate that uses isogenies in its construction. The scheme is particularly …

Abstract Non-Interactive Timed Commitment schemes (NITC) allow to open any commitment
after a specified delay $ t_ {\mathrm {fd}} $. This is useful for sealed bid auctions and as …

Аннотация Данная работа посвящена методам проектирования постквантового
криптографического алгоритма электронной цифровой подписи. Существуют …

We present a verifiable delay function based on isogenies of supersingular elliptic curves,
using Deuring correspondence and computation of endomorphism rings for the delay. For …