Threshold Post-Quantum E-Voting from Lattice Commitments

본문 미리보기

Lattice-based homomorphic e-voting protocols built on commitments, such as EVOLVE, keep ballots private against all but one authority and the tally verifiable even if all authorities collude, but need every authority to tally. We present T-EVOLVE, in which votes are Shamir-shared over the commitment message space: any t of n authorities that took part in the checking phase complete the tally, privacy holds against t-1 colluding authorities and verifiability against all. The voter proves that her