We prove adaptive security of a simple three-round threshold Schnorr signature scheme,
which we call Sparkle. The standard notion of security for threshold signatures considers a …

Threshold digital signatures enable a distributed execution of signature functionalities and
will play a crucial role in the security of emerging decentralized next-generation networked …

Group actions are fundamental mathematical tools, with a long history of use in
cryptography. Indeed, the action of finite groups at the basis of the discrete logarithm …

In this work, we present a novel generic construction for a Distributed Key Generation (DKG)
scheme. Our generic construction relies on three modular cryptographic building blocks. The …

We present an EdDSA-compatible multi-party digital signature scheme that supports an
offline participant during the key-generation phase, without relying on a trusted third party …

Edwards-curve digital signature algorithm (EdDSA) is a highly efficient scheme with a short
key size. It is derived from the threshold-friendly Schnorr signatures and is covered by the …

The recent surge of distribute technologies caused an increasing interest towards threshold
signature protocols, that peaked with the recent NIST First Call for Multi-Party Threshold …

Hardware Security Modules (HSMs) play a crucial role in enterprise environments by
safeguarding sensitive cryptographic keys and performing essential cryptographic …