Block chain-based electronic voting method capable of verifying fairness

The invention belongs to the technical field of computer information security, and particularly relates to a block chain-based fairness-verifiable electronic voting method, which comprises the following steps of: firstly, determining qualified voters participating in election by collecting registration information of users, and setting basic information of the election to initialize the election; then the voter encrypts the vote and generates identity validity and vote validity proof; and finally, after voting in the ciphertext decryption vote counting stage is cut off, the system counts vote information from the block chain, determines a final vote counting result and sends the final vote counting result to all interested third parties in the block chain for verification. According to the safe and verifiable self-counting protocol based on the block chain, the block chain and encryption knowledge are combined for use, privacy safety can be guaranteed, the problems of fairness defects and replay attacks can b