Extensible Decentralized Secret Sharing and Application to Schnorr Signatures

ePrint Report: Extensible Decentralized Secret Sharing and Application to Schnorr Signatures

Michele Battagliola, Riccardo Longo, Alessio Meneghetti

Starting from links between coding theory and secret sharing we develop an extensible and decentralized version of Shamir Secret Sharing, that allows the addition of new users after the initial shares distribution.


On top of it we design a totally decentralized $(t,n)$-threshld Schnorr signature scheme that needs only $t$ users online during the key generation phase, while the others join later.

Under standard …

application decentralized eprint report secret sharing signatures