Why It Took So Long to Achieve Digital Voting Systems (That Actually Work)

Shutter's team argues that its Permanent Shielded Voting system resolves the privacy, transparency and scalability trade-off that caused earlier digital voting systems to fail. The system uses ElGamal homomorphic encryption so election authorities add encrypted votes and decrypt only the final sum, with zero-knowledge proofs checking validity and blocking duplicate votes. The decryption key is split among independent parties, for example requiring three of five to cooperate, and the text says computational cost grows linearly with voter numbers. Earlier failures cited include West Virginia's 2018 Voatz blockchain voting and Switzerland's 2019 e-voting suspension.