Problem
Research questions and friction points this paper is trying to address.
post-quantum signatures
threshold signature schemes
security
Thresholding Post-Quantum Signatures
🤖 AI Summary
本文研究了基于不同范式的后量子签名方案，提出了一种分类方法，并探讨了如何构建T-out-of-N门限签名方案。
📝 Abstract
Threshold signature schemes distribute the signing process among $T$ parties out of $N$. They enable a variety of applications and their research is also motivated by a recent NIST call. However, applications are dominated by pre-quantum signatures, which are more efficient but not secure in the post-quantum setting. This paper investigates existing post-quantum signatures, based on a variety of paradigms: lattice problems, one-way (hash) functions, cryptographic group actions, isogenies and multivariate systems. We propose a classification (divided by paradigm) of existing tools that are used to build $T$-out-of-$N$ schemes from digital signatures. We also include general approaches based on FHE, MPC or ZKP.
Innovation
Methods, ideas, or system contributions that make the work stand out.
post-quantum signatures
threshold signature schemes
FHE
MPC
ZKP
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