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Threshold Signatures from One-Way Functions

  • 2026
  • OriginalPaper
  • Chapter
Published in:
Authors
Pedro Branco
Giulio Malavolta
Published in
Theory of Cryptography
Publisher
Springer Nature Switzerland

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Abstract

This chapter delves into the fascinating world of threshold signatures, a cryptographic concept that allows multiple parties to collaboratively generate a signature without revealing their individual secrets. The authors present a groundbreaking construction of threshold signatures from one-way functions, a significant advancement that aligns threshold signatures with standard signatures. The chapter introduces a novel primitive, Tree OT extensions, which plays a crucial role in this construction. It also provides a comprehensive analysis of previous approaches to threshold signatures, highlighting their limitations and why they fall short of achieving the desired results. The authors demonstrate how their new method overcomes these challenges, offering a more efficient and secure solution. Furthermore, the chapter explores the implications of this breakthrough, discussing its potential applications in crypto wallets and other areas of cryptography. The authors also address open problems, such as constructing threshold signatures with non-interactive signing from one-way functions, inviting further research and exploration in this exciting field.
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previous chapter Dimensional eion: Improving the  Attack with Decomposition in Higher Bases
next chapter How to Verify that a Small Device is Quantum, Unconditionally
Title
Threshold Signatures from One-Way Functions
Authors
Pedro Branco
Giulio Malavolta
Copyright Year
2026
Book
Theory of Cryptography

Print ISBN: 978-3-032-12295-7

Electronic ISBN: 978-3-032-12296-4

Copyright Year: 2026

DOI
https://doi.org/10.1007/978-3-032-12296-4_12
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