Abstract
Stake voting is a voting system where the vote cast by a voter is proportional to their account balance/asset. We propose the first implementation of an efficient, fully-decentralized, universally-verifiable stake voting system with perfect voter privacy. Our contribution is two-fold. First, we design a zero knowledge proof (ZKP) for equality of plaintexts of 2 different ciphertexts encrypted under different encryption schemes, one under ElGamal encryption scheme and another under Paillier encryption scheme. We believe that ours is the first ZKP design for this problem statement. Second, we implement a publicly-verifiable Stake voting system using the ZKP design by enforcing perfect privacy to voters and correctness of election results. Our voting system is applicable to many situations like shareholder/stockholder voting in companies. We have also provided the financial and computational breakdown feasibility of our implementation on Ganache local blockchain.
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