Publicly Verifiable Secret Sharing over Class Groups and Applications to DKG and YOSO

ePrint Report: Publicly Verifiable Secret Sharing over Class Groups and Applications to DKG and YOSO

Ignacio Cascudo, Bernardo David

Publicly Verifiable Secret Sharing (PVSS) allows a dealer to publish encrypted shares of a secret so that parties holding the corresponding decryption keys may later reconstruct it. Both dealing and reconstruction are non-interactive and any verifier can check their validity. PVSS finds applications in randomness beacons, distributed key generation (DKG) and in YOSO MPC (Gentry et al. CRYPTO'21), when endowed with …

applications class decryption decryption keys encrypted eprint report keys may report secret sharing