Design And Analysis Of Quantum Anonymous Voting Protocol Based On Distribution

With the rapid development of quantum technology,more and more quantum voting schemes have been proposed.However,the existing scheme does not take into account the following three issues.Firstly,separating the authentication and the voting.Secondly,the existing scheme will publish the votes of all candidates that does not protect the privacy of the losers.Finally,the existing voting schemes transmit information in an ideal quantum channel without taking into account noise in the quantum channel.Therefore,it is necessary to design secure and feasible quantum anonymous voting schemes.For the above problems,this thesis proposes two different voting protocols.The main research results are as follows.(1)A quantum anonymous voting protocol that can protect the privacy of candidates was proposed.In this protocol,when preparing a quantum ballot,the scrutineer inserts a special quantum sequence into the quantum ballot.When the voter sends the quantum ballot to the candidate,the candidate can use this quantum sequence to verify whether the identity of the voter is legal.In this way,the identity of voters can be verified during the voting phase,which guarantees that only legitimate voters can vote.After all voters have completed voting,the candidate linearly processes his own votes,and then sends the processed results to the scrutineer.After receiving the results,the scrutineer selects the candidate with the highest number of votes.And only this candidate publishes the number of votes that he received.Thereby,that protects the privacy of the candidate.(2)A quantum anonymous voting protocol based on decoherence-free state was prepared.In this protocol,the quantum resources used are decoherence-free states,which can resist collective-phasing noise and collective-rotation noise in the quantum channel.In addition,to ensure that only legitimate voters can vote,the protocol realizes the detection of voter's identity during the voting process.Finally,in this thesis,the scrutineer generates a marked pseudonym list utilized to record the pseudonym of the voted voter,which ensures that each voter can only vote once,ensuring the unreusability of voting.