Adaptively Secure (Aggregatable) PVSS and Application to Distributed Randomness Beacons

ePrint Report: Adaptively Secure (Aggregatable) PVSS and Application to Distributed Randomness Beacons

Renas Bacho, Julian Loss

Publicly Verifiable Secret Sharing (PVSS) is a fundamental primitive that allows to share a secret $S$ among $n$ parties via a publicly verifiable transcript $T$. Existing (efficient) PVSS are only proven secure against static adversaries who must choose who to corrupt ahead of a protocol execution. As a result, any protocol (e.g., a distributed randomness beacon) that builds on top of such a PVSS …

application distributed eprint report loss randomness report secret share sharing