Fair electronic voting protocol method based on block chain and secure multi-party computing

Abstract

The invention discloses a fair electronic voting protocol method based on a block chain and secure multi-party computing, which uses secret sharing, homomorphic encryption and homomorphic commitment technologies to construct a verifiable secure multi-party computing protocol supporting public operation on a smart contract, can resist n-1 collusion attacks, automatically completing voting, ticket checking, counting and other processes by utilizing the protocol and using a block chain, supporting an anonymous weighted n-of-m voting activity, completely removing existence of trusted third parties such as a ticket counting center and a supervision mechanism, and evaluating historical behaviors of participants from multiple dimensions of reputation value, activeness and selfish in combination with a node credibility evaluation mechanism, and a guarantee deposit mechanism is combined, and the problem of fairness of protocol execution is solved by punishing malicious persons.

Description

Technical field [0001] The present invention relates to the field of zone chain technology and safety electronic voting, and in particular, a method of fair electronic voting protocol based on block chain and security multiple parties. Background technique [0002] Electronic voting can overcome a lot of drawbacks of paper voting, many countries use electronic voting to conduct major voting activities. Traditional electronic voting schemes have three major categories: based on the electronic voting plan of the hybrid network, based on the electronic voting plan of the loop name and blind signature, the electronic voting plan based on the full-state encryption. There are some problems in these programs. There are many solutions based on loop-signed and blind signed programs that need to be assumed to rely on trusted institutions and anonymous channels; the proposition based on hybrid networks and the general-state encryption program has high complexity, and practicality Strong pro...

AI Technical Summary

Problems solved by technology

Some scholars have begun to use the blockchain to construct a secure electronic voting protocol, but there are still some unresolved problems in the existing schemes: 1. Practical problems: most schemes can only implement voting schemes of choosing one of two and choosing one of many , there is no multi-choice and multi-form voting scheme that can achieve weighting at the same time; 2. Security issues: the solution to many schemes is to use the blockchain to store encrypted ballot information, but still rely on third-party organizations, such as registration centers and authorization centers , there is still the threat of centralization; 3. Fairness problem: malicious participants violate the agreement in the final stage of protocol execution, so that honest participants cannot get the correct result and only malicious participants can get the result

Most of them use the deposit mechanism and time commitment mechanism to force the participants to promote the correct implementation of the agreement by increasing the cost of doing evil, but they do not comprehensively consider the historical behavior of the participants and other information

Images