Fair and safe electronic voting protocol method based on block chain

Abstract

The invention relates to a fair and safe electronic voting protocol method based on a block chain. The fair and safe electronic voting protocol method comprises the following steps: S1, establishing asystem; S2, an input stage; S3, a calculation stage; S4, an output stage; and S5, a recovering blind data stage. According to the method, an economic punishment mechanism is added into a secure multi-party computing protocol, guarantee deposit is paid before computing is executed, behaviors of participants are verified after computing is finished, guarantee deposit of honesters is returned, and guarantee deposit of malicious persons is equally divided to the honesters. A block chain is introduced, a penalty mechanism is constructed by utilizing an intelligent contract to realize fairness, andthe intelligent contract is automatically executed, so that guarantee is provided for managing guarantee deposit of a participant and credibly judging behaviors of the participant under the conditionthat the credible party does not exist.

Description

technical field [0001] The invention relates to the technical field of block chains, in particular to a fair and safe electronic voting protocol method based on block chains. Background technique [0002] Electronic voting is a new modern voting method using the Internet, computer and cryptography technology. Electronic voting can greatly reduce the consumption of manpower and material resources caused by voting activities, and overcome many disadvantages of traditional voting. In 1992, three Japanese scientists proposed the famous FOO electronic voting protocol, which is considered to be the first large-scale electronic voting scheme used. After that, researchers made many improvements on the basis of the FOO scheme, but FOO The inherent flaws in the electronic voting protocol can never be overcome: (1) Ballot collision problem: If a voter fills in two identical ballots, the counting agency cannot tell whether it is a malicious vote or two ballots from different voters dur...

AI Technical Summary

Problems solved by technology

In 1992, three Japanese scientists proposed the famous FOO electronic voting protocol, which is considered to be the first large-scale electronic voting scheme used. After that, researchers made many improvements on the basis of the FOO scheme, but FOO The inherent flaws in the electronic voting protocol can never be overcome: (1) Ballot collision problem: If a voter fills in two identical ballots, the counting agency cannot tell whether it is a malicious vote or two ballots from different voters during the counting stage. (2) Privacy issue: During the vote counting stage, the ticket agency needs to open the voter’s ballot, and the ballot information is no longer confidential; (3) It is impossible to distinguish dishonest voters, and the ticket agency cannot distinguish honest voters from dishonest voters , in order to maintain the anonymity of the vote, the voting agency cannot see who sent the vote

However, the electronic voting protocol based on secure multi-party computing still cannot solve two problems: (1) Security issues: In this scheme, registration agencies and authorized agencies are still required to confirm the information of voters, and to verify voters' votes. Authorization, if the registration agency or authorization agency is corrupted or compromised, the agreement cannot be executed normally

(2) In the secret sharing phase of secure multi-party computation, participants cannot guarantee that the secret shares they obtain belong to the same secret, and in the calculation process, there is no guarantee that the calculation result of a certain node is correct

In the vote counting stage, enough voting nodes are required to participate in the recovery voting. If a malicious node refuses to participate in the recovery, or it recovers the result first and refuses to provide its own data, the honest node will not be able to obtain the voting result, and fairness cannot be guaranteed.

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