Blockchain: A Method to Improve Voting System

In order to overcome the disadvantages of poor security and lack of trust in the traditional electronic voting system and improve the reliability of the election system, this paper proposes an electronic voting system based on blockchain. This system is divided into voting module and blockchain management module, which mainly aims at the credibility of voting data and the protection of voters' privacy. The voting module begins with the verification of voter's identity, uses Zero Knowledge Proof algorithm to prove that the entrant is the legitimate owner of part of the rights and interests, uses ECDSA to encrypt the data, and uses Digital Signature to verify the security and integrity of the data. The main purpose of the blockchain management module is to update the data in real time, make the newly added nodes complete data synchronization, check the consistency of the data, and provide the user with historical records.