Blockchain is a technology that has desirable features of decentralization, autonomy,
integrity, immutability, verification, fault-tolerance, anonymity, auditability, and transparency …

A blockchain is a distributed system that achieves strong security guarantees in storing,
managing, and processing data. All blockchains achieve a common goal: building a …

Multi-signatures enable a group of signers to produce a joint signature on a joint message.
Recently, Drijvers et al.(S&P'19) showed that all thus far proposed two-round multi-signature …

Threshold signatures are a crucial tool for many distributed protocols. As shown by Cachin,
Kursawe, and Shoup (PODC'00), schemes with unique signatures are of particular …

Unlike signatures in a single-party setting, threshold signatures require cooperation among
a threshold number of signers each holding a share of a common private key. Consequently …

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 …

We present an algorithm solving the ROS (R andom inhomogeneities in a O verdetermined
S olvable system of linear equations) problem mod p in polynomial time for ℓ> log p …

Multi-signatures are protocols that allow a group of signers to jointly produce a single
signature on the same message. In recent years, a number of practical multi-signature …

Although they have been studied for a long time, distributed signature protocols have
garnered renewed interest in recent years in view of novel applications to topics like …

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 …