WO2021196473A1

WO2021196473A1 - Electronic voting method and device, computer, and storage medium

Info

Publication number: WO2021196473A1
Application number: PCT/CN2020/105885
Authority: WO
Inventors: 张宝; 谢丹力; 王梦寒; 朱斌; 贾牧; 褚镇飞
Original assignee: 深圳壹账通智能科技有限公司
Priority date: 2020-04-03
Filing date: 2020-07-30
Publication date: 2021-10-07
Also published as: CN111159683B; CN111159683A

Abstract

The present application relates to the field of blockchains, and discloses an electronic voting method and device, a computer, and a storage medium. When a participant end performs voting, a balance in a first voting account corresponding thereto is not directly transferred to a "yes" account or a "no" account. Instead, the balance is transferred to a shadow account of the "yes" account or a shadow account of the "no" account first. The shadow accounts are second voting accounts corresponding to: acceptAcc1 = B1*g KDF(DH(r, B2)) and acceptAcc2 = B1*g KDF(DH(r, B3)). The second voting accounts are found according to: acceptAcc1` = B1*gKDF(DH(R, b2)) and acceptAcc2` = B1*gKDF(DH(R, b3)). Merging is performed so as to complete electronic voting. In this process, the invention solves the problem of over-active accounts, improves security and privacy of voting, and allows an audit department to perform auditing.

Description

Electronic voting method, device, computer and storage medium

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on April 3, 2020, the application number is 202010260573.3, and the invention title is "electronic voting method, device, computer and storage medium", the entire content of which is incorporated by reference In this application.

Technical field

This application relates to the field of blockchain, in particular to an electronic voting method, device, computer equipment and storage medium.

Background technique

The inventor found that the current blockchain electronic voting system has a hot account problem. The so-called hot account problem refers to: If multiple write or update operations are performed on the same address (or account) within time T on the blockchain, only one write or update operation can succeed at most, and all other writes or operations Both will fail; the time T here is mainly the time when the block chain is generated (ie: the time when the update operation takes effect); for example, suppose that during the time T, two voters A and B both voted on the articles of incorporation 1 vote in favor, and before the vote, the original vote in favor was 5. Because the blockchain is a distributed system, voter A may initiate a vote on a node (voter A sees that his vote is completed , Vote for 6), and voter B initiates a vote on another node (after voter B sees that his vote is completed, the vote for vote is also 6), these two nodes are not aware of the existence of the vote of the other node, At this time, when the blockchain archives the proposals of each node and finally generates a block, only one voter can vote successfully, that is, one vote of yes is lost.

technical problem

The main purpose of this application is to provide an electronic voting method, device, computer, and storage meson, aiming to solve the technical problem of hot accounts generated when using the blockchain for electronic voting in the prior art.

Technical solutions

In order to achieve the above-mentioned purpose of the invention, this application proposes an electronic voting method, including:

Receiving an electronic voting application sent by the initiating end, wherein the electronic voting application contains information about the proposed scheme and the voting agenda;

Judge whether the initiator is qualified to initiate electronic voting through the smart contract;

If it is judged that the initiator is qualified to initiate electronic voting, the three public keys uploaded by the initiator are obtained: B1, B2, and B3, where the three public keys are a public-private key pair (b1, B1), (b2,B2), the public key in (b3,B3), B1=g ^b1 mod n, B2=g ^b2 mod n, B3=g ^b3 mod n, where n is the product of two large prime numbers p and q, That is, n=pq; the b1, b2, and b3 are stored locally by the initiator;

Receive the electronic voting of each participating terminal participating in the voting, wherein the participating terminal randomly selects a public-private key pair (r, R), where R=g ^r ; the participating terminal calculates the account address acceptAcc1 for voting consent =B1*g ^KDF(DH(r, ^B2)) ; or, the account address used to vote against acceptAcc2=B1*g ^{KDF(DH(r,B3))} ; then the first vote corresponding to the participant The balance in the account is transferred to the second voting account corresponding to acceptAcc1 or the second voting account corresponding to acceptAcc2 to generate the electronic vote;

After the voting agenda is over, receive the collection request from the initiator, where the collection request includes the address of the account that needs to be collected, and the initiator uses acceptAcc1`=B1*gKDF(DH(R,b2 )) Calculate the voting account corresponding to each participating terminal, and calculate the voting account corresponding to each participating terminal through the formula acceptAcc2`=B1*gKDF(DH(R,b3)), where the acceptAcc1 =acceptAcc1`, acceptAcc2=acceptAcc2`;

Collect all the balances in the voting account corresponding to acceptAcc1` into the approval account for storing approval votes, and collect all the balances in the voting account corresponding to acceptAcc2` into the opposition account for storing negative votes middle.

This application also provides an electronic voting device, including:

The receiving and initiating unit is configured to receive an electronic voting application sent by the initiating end, wherein the electronic voting application contains information about a proposal scheme and a voting agenda;

The qualification determining unit is used to determine whether the initiator is qualified to initiate electronic voting through a smart contract;

The obtaining unit is used to determine that the initiator is qualified to initiate electronic voting, and then obtain three public keys uploaded by the initiator: B1, B2, and B3, where the three public keys are a public-private key pair (b1 , B1), (b2, B2), (b3, B3) in the public key, B1 = g ^b1 mod n, B2 = g ^b2 mod n, B3 = g ^b3 mod n, where n is two large prime numbers p, The product of q, that is, n=pq; the b1, b2, and b3 are stored locally by the initiator;

The receiving voting unit is used to receive the electronic voting of each participating terminal participating in the voting, wherein the participating terminal randomly selects a public-private key pair (r, R), where R=g ^r ; the participating terminal calculates for voting The account address of the consent vote acceptAcc1=B1*g ^{KDF(DH(r,B2))} ; or the account address used to vote against the vote acceptAcc2=B1*g ^KDF(DH(r, ^B3)) ; then the said participation The balance in the first voting account corresponding to the terminal is transferred to the second voting account corresponding to acceptAcc1 or the second voting account corresponding to acceptAcc2 to generate the electronic vote;

The receiving collection unit is configured to receive the collection request from the initiator after the voting agenda is over, wherein the collection request includes the address of the account that needs to be collected, and the initiator uses acceptAcc1`=B1* gKDF(DH(R,b2)) calculates the voting account corresponding to each participating terminal, and calculates the voting corresponding to each participating terminal through the formula acceptAcc2`=B1*gKDF(DH(R,b3)) Account, wherein the acceptAcc1=acceptAcc1`, acceptAcc2=acceptAcc2`;

The collection unit is used to collect all the balances in the voting account corresponding to acceptAcc1` to the approval account for storing the approval votes, and to collect the balances in all the voting accounts corresponding to acceptAcc2` to Store the disapproval account in the negative.

The present application also provides a computer device, including a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, an electronic voting method is implemented, including:

This application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, an electronic voting method is realized, including:

Beneficial effect

The electronic voting method, device, computer equipment and storage medium of this application solve the hot account problem; improve the privacy of voting; the participant end does not need to ask for the voting address from the initiator before voting, it can be directly provided by the initiator The key to calculate the corresponding account address; this application also supports audit review.

Description of the drawings

FIG. 1 is a schematic flowchart of an electronic voting method according to an embodiment of the application;

2 is a schematic block diagram of the structure of an electronic voting device according to an embodiment of the application;

FIG. 3 is a schematic block diagram of the structure of a computer device according to an embodiment of the application.

The realization, functional characteristics, and advantages of the purpose of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

The best mode of the present invention

In order to make the purpose, technical solutions, and advantages of this application clearer and clearer, the following further describes the application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

1, an embodiment of the present application provides an electronic voting method, which includes the steps:

S1. Receive an electronic voting application sent by the initiating end, wherein the electronic voting application contains information about a proposed scheme and a voting agenda;

S2. Judge whether the initiator is qualified to initiate electronic voting through the smart contract;

S3. If it is determined that the initiator is qualified to initiate electronic voting, obtain three public keys uploaded by the initiator: B1, B2, and B3, where the three public keys are a public-private key pair (b1, B1). ), (b2, B2), (b3, B3) in the public key, B1 = g ^b1 mod n, B2 = g ^b2 mod n, B3 = g ^b3 mod n, where n is two large prime numbers p, q The product, that is, n=pq; the b1, b2, and b3 are stored locally by the initiator;

S4. Receive an electronic vote from each participating terminal participating in the voting, wherein the participating terminal randomly selects a public-private key pair (r, R), where R=g ^r ; the participating terminal calculates the account used to vote for approval The address acceptAcc1=B1*g ^KDF(DH(r, ^B2)) ; or, the account address used to vote against acceptAcc2=B1*g ^{KDF(DH(r,B3))} ; then the first part corresponding to the participating terminal The balance in a voting account is transferred to the second voting account corresponding to acceptAcc1 or the second voting account corresponding to acceptAcc2 to generate the electronic vote;

S5. After the voting agenda is over, receive a collection request from the initiator, where the collection request includes the address of the account that needs to be collected, and the initiator uses acceptAcc1`=B1*gKDF(DH(R ,b2)) Calculate the voting account corresponding to each participating terminal, and calculate the voting account corresponding to each participating terminal through the formula acceptAcc2`=B1*gKDF(DH(R,b3)), where Say acceptAcc1=acceptAcc1`, acceptAcc2=acceptAcc2`;

S6. Collect all the balances in the voting account corresponding to acceptAcc1` into the approval account for storing approval votes, and aggregate all the balances in the voting accounts corresponding to acceptAcc2` into the one for storing negative votes. Object to the account.

The method of this application is a voting method based on blockchain technology, and the above steps are carried out on a blockchain system that supports distributed voting.

As mentioned in the above step S1, the above-mentioned initiator refers to a terminal with an initiating account logged in, which can be a terminal that can log in to the blockchain system, such as a mobile phone, a computer, or a tablet computer. The above-mentioned proposal is the specific content of this voting. The above-mentioned voting agenda mainly requires the specific voting process, such as stipulating when the voting is closed.

As described in the above step S2, the above smart contract is a set of promises defined in digital form, including an agreement on which contract participants can execute these promises. Only after the initiator has passed the verification of the smart contract, can it be truly qualified to initiate electronic voting. The above smart contract verifies whether the initiator has the qualification to initiate an electronic vote. In fact, it does not verify the terminal of the initiator, but verifies the account of the initiator logged in the terminal. In other embodiments, if the terminal and the initiating account must be in a bound state, then the smart contract needs to verify whether the terminal and the initiating account are in a bound state, and whether the initiating account is eligible to initiate electronic voting, and only those that are fully satisfied At that time, it will be determined that the initiator is eligible to initiate electronic voting.

As described in step S3 above, the three public keys uploaded by the initiator: B1, B2, and B3 can be published on the blockchain system when uploading the electronic voting application, or when it is determined that the initiator has Uploaded to the blockchain system when the eligibility for electronic voting is initiated. The above three public keys: B1, B2, and B3 are the public keys of the voting account of the initiator; among them, B1 is the main public key of the initiator account, which has the same meaning as the traditional account public key address; and B2 and B3 are the initiators The end account is used to derive the derived public key of the following second account (shadow account), which has the effect of confusing the address of the sub-account; specifically, B2 is used to derive all agreed account public keys, and B3 is used to derive all Oppose the account public key. The number of bits of n mentioned above is 2048 bits, which can further improve security.

As described in the above step S4, the electronic vote from the participant terminal is received, where the participant terminal refers to a terminal that logs in to a participant account that can vote, which can be a mobile phone, a computer, a tablet, or the like, which can log in to the above-mentioned blockchain system. During the voting process, the participant will randomly select a public-private key pair (r, R), where R=g ^r , and then the user of the participant will vote for or against according to their willingness to vote. Among them, different The public and private key pair (r, R) selected by the participant is different. Specifically, when the user of the participating terminal casts a consent vote, the participating terminal will use the above public key B2 to calculate the address of a second voting account acceptAcc1=B1*g ^{KDF(DH(r,B2))} ; when participating When users on the end vote against, the participating end will use the above public key B3 to calculate the address of a second voting account acceptAcc2=B1*g ^KDF(DH(r, ^B2)) , and the smart contract will be based on acceptAcc1= B1*g ^{KDF(DH(r,B2))} or acceptAcc2=B1*g ^{KDF(DH(r,B2))} , create a corresponding second voting account, and then transfer the balance of the first account corresponding to the participant To the aforementioned second voting account to generate the electronic vote. In this embodiment, the corresponding second voting account will be established according to the voting results of the participating terminals, and there is no need to generate two second voting accounts for each participating account.

In an embodiment, before the above step S4, it further includes: S401, receiving the identity CA certificate of the participant, and using the first private key of the identity CA certificate to sign the electronic voting application to obtain Sig; S402, corresponding The participant and the voting agenda generate a second private key, and use the second private key to generate a certificate to apply for CSR; S403, send the identity CA certificate, Sig, CSR, and the account address of the participant Perform identity verification for the initiator; S404, if the identity verification passed information fed back by the initiator is received, a command of "receive the electronic voting of each participant participating in the voting" is generated. That is, to verify whether the participating terminal has the right to participate in voting, only the participating terminal with the right to participate in voting can conduct this electronic voting.

As described in step S5, after the voting agenda is over, the voting results need to be collected. In the collection process, the address of the account that needs to be collected is provided by the initiator, and the address provided by the initiator is obtained through R, and b1 or b2. Specifically, acceptAcc1`=B1*gKDF(DH( R,b2)), acceptAcc2`=B1*gKDF(DH(R,b3)). Because the address of the second voting account mentioned above is calculated by r and B2 or B3, the address of the same second voting account can be obtained from the corresponding R and b1 or b2, that is, acceptAcc1=acceptAcc1`, acceptAcc2=acceptAcc2`. Then all the balances in the voting account corresponding to acceptAcc1` are collected into the approval account used to store approval votes, and the balances in all the voting accounts corresponding to acceptAcc2` are collected into the objection for storing negative votes. In the account, get the final voting result. It should be noted that because the initiator does not know the voting results of the participating terminals, it will calculate two addresses for each participating terminal, namely acceptAcc1` and acceptAcc2. During the collection, if the corresponding address is not found, it will be omitted. pass. When the collection is over, the final voting result can be obtained by comparing the balances in the agreeing and disagreeing accounts.

In one embodiment, after the above step S2 of judging whether the initiator is qualified to initiate electronic voting through the smart contract, the method further includes:

S201: Establish the agreed account and the objection account.

The above agreed and opposed accounts are the accounts used to deposit the agreed balance and the opposed balance. In this application, as long as the initiator is qualified to initiate electronic voting, the blockchain system will establish a consent account and an objection account. When the voting agenda is over, the balance of the second voting account that voted for the approval can be collected into the approval account. , The balance of the second voting account that voted against is collected into the opposition account. In this application, the approval account and the objection account are set up in advance, so that the participating users who participate in the voting know in advance where the results will be reflected, etc., so that the focus of the participating accounts is aggregated on the approval account and the objection account.

In an embodiment, before the step S4 of receiving the electronic voting of each participant participating in the voting, the method further includes:

S41: Obtain the number of votes held by the participating terminal and the voting weight value of the participating terminal through a smart contract;

S42: Multiply the voting quantity by the voting weight value through a smart contract to obtain the balance of the participating terminal;

S43. Create the first voting account with the balance and the opening key as the second private key through a smart contract.

As described in the above steps S41 to S43, the number of votes on the participating terminal refers to the original number of votes of participating users who use the participating terminal. The above voting weight value represents a weight value of the voting of the participating user. Specifically, in a shareholder electronic In voting, the number of votes of the aforementioned participating user can be the user’s equity value a, and the voting weight value is the weight value b of the participating user’s equity value. For example, the participating user is the original shareholder, and its voting weight value is 10. Then its voting balance is 10a. For example, if the participating user is an ordinary shareholder and its voting weight value is 1, then its voting balance is 1a, etc. In this embodiment, the method of converting the statistics of the normal number of votes into a balance is more in the form of a blockchain. In the above-mentioned smart contract, the above-mentioned blockchain system pre-records the voting weight value and the number of votes of all users who may participate in electronic voting.

In one embodiment, the above step S41 of obtaining the number of votes possessed by the participating terminal and the voting weight value of the participating terminal through a smart contract includes:

S411: Determine the application type of the electronic voting application;

S412: Determine the number of votes held by the participating terminal and the voting weight value of the participating terminal according to the application type.

As described in the above steps S411 and S422, the application types of electronic voting applications include multiple types, such as electronic voting applications for whether a certain business is to be carried out. The application type is an ordinary application type, and its original shareholders and ordinary shareholders participate in the corresponding end Users have the same or similar voting weight value; another example is the electronic voting application for the removal of a shareholder's right. The application type is a special application type. At this time, the original shareholder's electronic voting weight value is much higher than that of ordinary shareholders. For example, the voting weight of the original shareholders is 10 times the voting weight of ordinary shareholders, etc. There are several methods for determining the application type of an electronic voting application. For example, in the first type, the initiator actively enters the application type when initiating an electronic voting application, so that the electronic voting application will carry an identification signal for smart contract identification. The contract will determine the type of application; for example, in the second type, the smart contract traverses the proposed scheme through keyword identification. If the preset number of keywords in the proposed scheme reaches the set threshold, the application type can be determined, such as in the proposed scheme If a specified number of "recall" keywords appear, it is determined that the application type is a special application. It should be noted that the keywords set in different fields are different and will be set according to the specific application scenarios of the blockchain system.

In one embodiment, before step S2 of judging whether the initiator is qualified to initiate electronic voting through a smart contract, the method includes:

S21: Obtain face information of the terminal user corresponding to the initiator;

S22: Determine whether the face information matches the initiator;

S23. If it matches, execute the step of judging whether the initiator is qualified to initiate electronic voting through the smart contract.

In this embodiment, in order to prevent other people from maliciously initiating an electronic voting application after the initiating account of the initiating end is stolen, the face recognition is performed first, and the specific facial information matching process can use any of the existing ones. The method of face recognition matching, such as live body detection first, and then face recognition, etc., will not be repeated here.

In one embodiment, the above step S2 of judging whether the initiator is qualified to initiate electronic voting through a smart contract includes:

S211: Judge whether the initiator is a management account through the smart contract;

S212. If yes, judge whether the electronic voting application carries joint signatures of other management accounts through the smart contract;

S212. If the joint signature is provided, it is determined that the initiating end is qualified to initiate an electronic voting.

In this embodiment, the blockchain system first judges whether the originating account of the originating end is a management account, if so, it judges whether the electronic voting application carries the joint signature of other management accounts, and if so, it judges the originating end Have the qualifications to initiate electronic voting. That is to say, the account that initiates the electronic voting can only be a pre-set management account, and correspondingly, ordinary users cannot initiate the electronic voting process. For example, if a shareholder account with a shareholder's share of more than 20% is set as a management account, and other shareholder accounts are ordinary accounts, then only shareholder accounts with a share of more than 20% have the right to initiate electronic voting. Further, even if the management account has the right to initiate electronic voting, another condition needs to be met, that is, the joint signature of other management accounts. The joint signature is not necessarily the joint signature of all management accounts. It can be more than half of the management accounts. The signature of the account, etc., can be set in advance according to the specific situation. For example, different types of applications require different numbers of management accounts for joint signatures, etc. For important types of electronic voting, the more management accounts for joint signatures are required. In another specific embodiment, the application type of the electronic voting application is determined; according to the application type, the equity threshold that the shareholder who initiates the electronic voting application needs to have is determined; if the sum of the equity of each management user is greater than the equity Threshold, it is determined that the initiating account is qualified to initiate electronic voting.

In this embodiment, when voting at the participating end, the balance in the corresponding first voting account is not directly transferred to the above agreed account or the opposed account, but the balance is first transferred to the above agreed account or opposed In the shadow account of the account, the shadow account is the second voting account corresponding to ^{the above acceptAcc1=B1*g KDF(DH(r,B2))} and acceptAcc2=B1*g ^{KDF(DH(r,B3)).} acceptAcc1`=B1*gKDF(DH(R,b2)) and acceptAcc2`=B1*gKDF(DH(R,b3)) find each second voting account and collect them to complete electronic voting. In this process, the problem of hot account is solved; although the participant can calculate the shadow account address of the initiator, there is no way to calculate the private key of the shadow account; only the initiator can calculate the private key of the sub-account, because The initiator knows b1, the method is: g ^b1 *g ^x =g ^(b1+x) =acceptAcc, (b1+x) is the private key of the initiator; only the person who owns the b1 private key or the private key r can calculate the shadow The address of the account, that is, only the voter and the initiator can know the address of the second account, which improves the privacy of voting; the participant does not need to ask the initiator for the voting address before voting, it can be directly provided by the initiator The key calculates the corresponding account address; this application also supports audit review, because this application hides the address of the shadow account, if the initiator cheats, it will not be able to verify it; therefore, this solution needs to support auditing, the method is: the initiator Provide the private keys b2 and b3 to the auditor. Because the public key R is public on the blockchain, the auditor can calculate all voting addresses: acceptAcc=B1*g ^{KDF(DH(R,b2))} , And RejectAcc=B1*g ^{KDF(DH(R,b3))} .

2, an embodiment of the present application also provides an electronic voting device, including:

The receiving and initiating unit 10 is configured to receive an electronic voting application sent by the initiating end, wherein the electronic voting application contains information about a proposal and a voting agenda;

The eligibility determining unit 20 is used to determine whether the initiating terminal has the eligibility to initiate electronic voting through a smart contract;

The obtaining unit 30 is configured to determine that the initiator is qualified to initiate electronic voting, and obtain three public keys uploaded by the initiator: B1, B2, and B3, where the three public keys are a public-private key pair ( b1, B1), (b2, B2), (b3, B3) in the public key, B1 = g ^b1 mod n, B2 = g ^b2 mod n, B3 = g ^b3 mod n, where n is two large prime numbers p , The product of q, that is, n=pq; the b1, b2, and b3 are stored locally by the initiator;

The receiving voting unit 40 is configured to receive electronic voting of each participating terminal participating in the voting, wherein the participating terminal randomly selects a public-private key pair (r, R), where R=g ^r ; the participating terminal calculates The address of the account for voting acceptAcc1=B1*g ^{KDF(DH(r,B2))} ; or the address of the account used to vote against acceptAcc2=B1*g ^KDF(DH(r, ^B3)) ; then the said The balance in the first voting account corresponding to the participant terminal is transferred to the second voting account corresponding to acceptAcc1 or the second voting account corresponding to acceptAcc2 to generate the electronic vote;

The address receiving unit 50 is configured to receive a collection request from the initiator after the voting agenda ends, wherein the collection request includes the address of the account that needs to be collected, and the initiator uses acceptAcc1`=B1* gKDF(DH(R,b2)) calculates the voting account corresponding to each participating terminal, and calculates the voting corresponding to each participating terminal through the formula acceptAcc2`=B1*gKDF(DH(R,b3)) Account, wherein the acceptAcc1=acceptAcc1`, acceptAcc2=acceptAcc2`;

The collection unit 60 is used to collect all the balances in the voting account corresponding to acceptAcc1` into the approval account for storing the approval votes, and to collect all the balances in the voting accounts corresponding to acceptAcc2` to use In the objection account that stores the negative vote.

In an embodiment, the above electronic voting device further includes:

The establishment unit is used to establish the consent account and the objection account.

In an embodiment, the above electronic voting device further includes:

Receiving the identity CA certificate of the participant, and using the first private key of the identity CA certificate to sign the electronic voting application to obtain the Sig;

Generate a second private key corresponding to the participating end and the voting agenda, and use the second private key to generate a certificate to apply for CSR;

Sending the identity CA certificate, Sig, CSR, and the account address of the participant end to the initiating end for identity verification;

If the identity verification passed information fed back by the initiator is received, the command "receive the electronic voting of each participant participating in the voting" is generated.

In an embodiment, the above electronic voting device further includes:

The quantity and weight obtaining unit is used to obtain the number of votes held by the participant terminal and the voting weight value of the participant terminal through a smart contract;

The balance calculation unit is used to obtain the balance of the participating terminal by multiplying the voting quantity by the voting weight value through a smart contract;

The account creation unit is used to create the first voting account with the balance and the opening key as the second private key through a smart contract.

In an embodiment, the foregoing quantity and weight obtaining unit includes:

The judgment module is used to judge the application type of the electronic voting application;

The determining module is configured to determine the number of votes held by the participating terminal and the voting weight value of the participating terminal according to the application type.

In an embodiment, the above electronic voting device further includes:

The face information acquiring unit is used to acquire the face information of the terminal user corresponding to the initiating terminal;

The face matching unit is used to determine whether the face information matches the initiator;

The execution unit is configured to determine whether the initiating terminal is qualified to initiate electronic voting through the smart contract if it matches.

Further, the execution unit includes:

The first judgment module is used to judge whether the originating terminal is a management account;

The second judgment module is used for judging whether the electronic voting application carries joint signatures of other management accounts if the initiator is a management account;

The judging module is used for judging that the initiating end is qualified to initiate electronic voting if the joint signature is provided.

The above-mentioned units and modules are devices for performing the above-mentioned methods, and will not be discussed one by one here.

Referring to FIG. 3, an embodiment of the present application also provides a computer device, and its internal structure may be as shown in FIG. 3. The computer equipment includes a processor, a memory, a network interface, and a database connected through a system bus. Among them, the processor designed by the computer is used to provide calculation and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The database of the computer equipment is used to store data. The network interface of the computer device is used to communicate with an external terminal through a network connection. The computer program is executed by the processor to implement the electronic voting method of any of the above embodiments.

Those skilled in the art can understand that the structure shown in FIG. 3 is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied.

The computer device of the embodiment of the application does not directly transfer the balance in the corresponding first voting account to the above agreed account or the opposed account when voting at the participant end, but first transfers the balance to the above agreed account Or in the shadow account of the opposition account, the shadow account is the second voting account corresponding to ^{the above acceptAcc1=B1*g KDF(DH(r,B2))} and acceptAcc2=B1*g ^{KDF(DH(r,B3)), and then} According to acceptAcc1`=B1*gKDF(DH(R,b2)) and acceptAcc2`=B1*gKDF(DH(R,b3)), each second voting account is found and collected to complete electronic voting. In this process, the problem of hot account is solved; although the participant can calculate the shadow account address of the initiator, there is no way to calculate the private key of the shadow account; only the initiator can calculate the private key of the sub-account, because The initiator knows b1, the method is: g ^b1 *g ^x =g ^(b1+x) =acceptAcc, (b1+x) is the private key of the initiator; only the person who owns the b1 private key or the private key r can calculate the shadow The address of the account, that is, only the voter and the initiator can know the address of the second account, which improves the privacy of voting; the participant does not need to ask the initiator for the voting address before voting, it can be directly provided by the initiator The key calculates the corresponding account address; this application also supports audit review, because this application hides the address of the shadow account, and if the initiator cheats, it will not be able to verify it; therefore, this solution needs to support auditing by: the organizer (Initiator) Provide the private keys b2 and b3 to the auditor. Because the public key R is public on the blockchain, the auditor can calculate all voting addresses: acceptAcc=B1*g ^{KDF(DH(R, b2))} , and RejectAcc=B1*g ^{KDF(DH(R,b3))} .

An embodiment of the present application also provides a computer-readable storage medium. The computer-readable storage medium may be non-volatile or volatile. A computer program is stored thereon, and the computer program is executed when the computer program is executed by the processor. An electronic voting method of any of the above embodiments.

A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage. In the medium, when the computer program is executed, it may include the processes of the above-mentioned method embodiments. Wherein, any reference to memory, storage, database or other media provided in this application and used in the embodiments may include non-volatile and/or volatile memory. Non-volatile memory may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not a limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual-rate data rate SDRAM (SSRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

The above are only the preferred embodiments of this application, and do not limit the scope of this application. Any equivalent structure or equivalent process transformation made by using the content of the description and drawings of this application, or directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of this application.

Claims

An electronic voting method, which includes:

Receiving an electronic voting application sent by the initiating end, wherein the electronic voting application contains information about the proposed scheme and the voting agenda;

Judge whether the initiator is qualified to initiate electronic voting through the smart contract;

If it is judged that the initiator is qualified to initiate electronic voting, the three public keys uploaded by the initiator are obtained: B1, B2, and B3, where the three public keys are a public-private key pair (b1, B1), (b2,B2), the public key in (b3,B3), B1=g b1 mod n, B2=g b2 mod n, B3=g b3 mod n, where n is the product of two large prime numbers p and q, That is, n=pq; the b1, b2, and b3 are stored locally by the initiator;

Receive the electronic voting of each participating terminal participating in the voting, wherein the participating terminal randomly selects a public-private key pair (r, R), where R=g r ; the participating terminal calculates the account address acceptAcc1 for voting consent =B1*g KDF(DH(r, B2)) ; or, the account address used to vote against acceptAcc2=B1*g KDF(DH(r,B3)) ; then the first vote corresponding to the participant The balance in the account is transferred to the second voting account corresponding to acceptAcc1 or the second voting account corresponding to acceptAcc2 to generate the electronic vote;

When the voting agenda is over, receive the collection request from the initiator, where the collection request includes the address of the account that needs to be collected, and the initiator uses acceptAcc1`=B1*gKDF(DH(R,b2 )) Calculate the voting account corresponding to each participating terminal, and calculate the voting account corresponding to each participating terminal through the formula acceptAcc2`=B1*gKDF(DH(R,b3)), where the acceptAcc1 =acceptAcc1`, acceptAcc2=acceptAcc2`;

Collect all the balances in the voting account corresponding to acceptAcc1` to the approval account used to store approval votes, and aggregate the balances in all the voting accounts corresponding to acceptAcc2` to the opposition account used to store negative votes middle.
The electronic voting method according to claim 1, wherein after the step of judging whether the initiating terminal is qualified to initiate electronic voting through a smart contract, the method further comprises:

Establish the consent account and the objection account.
The electronic voting method according to claim 1, wherein before the step of receiving the electronic voting of each participant participating in the voting, the method comprises:

Receiving the identity CA certificate of the participant, and using the first private key of the identity CA certificate to sign the electronic voting application to obtain the Sig;

Generate a second private key corresponding to the participating end and the voting agenda, and use the second private key to generate a certificate to apply for CSR;

Sending the identity CA certificate, Sig, CSR, and the account address of the participant end to the initiating end for identity verification;

If the identity verification passed information fed back by the initiator is received, the command "receive the electronic voting of each participant participating in the voting" is generated.
The electronic voting method according to claim 3, wherein, before the step of receiving the electronic voting of each participant participating in the voting, the method further comprises:

Obtain the number of votes held by the participating terminal and the voting weight value of the participating terminal through a smart contract;

Multiplying the number of votes by the voting weight value through a smart contract to obtain the balance of the participating terminal;

The first voting account with the balance and the opening key being the second private key is created through a smart contract.
The electronic voting method according to claim 4, wherein the step of obtaining the number of votes possessed by the participant terminal and the voting weight value of the participant terminal through a smart contract comprises:

Determine the application type of the electronic voting application;

The number of votes held by the participating terminal and the voting weight value of the participating terminal are determined according to the application type.
The electronic voting method according to claim 1, wherein before the step of judging whether the initiating terminal is qualified to initiate electronic voting through a smart contract, it comprises:

Acquiring face information of the terminal user corresponding to the initiator;

Judging whether the face information matches the initiator;

If it matches, execute the step of judging whether the initiator is qualified to initiate electronic voting through the smart contract.
The electronic voting method according to claim 1, wherein the step of judging whether the initiating terminal is qualified to initiate electronic voting through a smart contract comprises:

Determine whether the originating terminal is a management account;

If yes, judge whether the electronic voting application carries joint signatures of other management accounts;

If the joint signature is provided, it is determined that the initiating terminal is qualified to initiate electronic voting.
An electronic voting device, which includes:

The receiving and initiating unit is configured to receive an electronic voting application sent by the initiating end, wherein the electronic voting application contains information about a proposal scheme and a voting agenda;

The qualification determining unit is used to determine whether the initiator is qualified to initiate electronic voting through a smart contract;

The obtaining unit is used to determine that the initiator is qualified to initiate electronic voting, and then obtain three public keys uploaded by the initiator: B1, B2, and B3, where the three public keys are a public-private key pair (b1 , B1), (b2, B2), (b3, B3) in the public key, B1 = g b1 mod n, B2 = g b2 mod n, B3 = g b3 mod n, where n is two large prime numbers p, The product of q, that is, n=pq; the b1, b2, and b3 are stored locally by the initiator;

The receiving voting unit is used to receive the electronic voting of each participating terminal participating in the voting, wherein the participating terminal randomly selects a public-private key pair (r, R), where R=g r ; the participating terminal calculates for voting The account address of the consent vote acceptAcc1=B1*g KDF(DH(r,B2)) ; or the account address used to vote against the vote acceptAcc2=B1*g KDF(DH(r, B3)) ; then the said participation The balance in the first voting account corresponding to the terminal is transferred to the second voting account corresponding to acceptAcc1 or the second voting account corresponding to acceptAcc2 to generate the electronic vote;

The receiving address unit is used to receive the collection request of the initiator after the voting agenda ends, wherein the collection request includes the address of the account that needs to be collected, and the initiator uses acceptAcc1`=B1*gKDF (DH(R,b2)) calculate the voting account corresponding to each participant terminal, and calculate the voting account corresponding to each participant terminal through the formula acceptAcc2`=B1*gKDF(DH(R,b3)) , Wherein said acceptAcc1=acceptAcc1`, acceptAcc2=acceptAcc2`;

The collection unit is used to collect all the balances in the voting account corresponding to acceptAcc1` to the approval account for storing the approval votes, and to collect the balances in all the voting accounts corresponding to acceptAcc2` to Store the disapproval account in the negative.
A computer device includes a memory and a processor, the memory stores a computer program, wherein the processor implements an electronic voting method when the computer program is executed, and the method includes the steps:

Receiving an electronic voting application sent by the initiating end, wherein the electronic voting application contains information about the proposed scheme and the voting agenda;

Judge whether the initiator is qualified to initiate electronic voting through the smart contract;

If it is judged that the initiator is qualified to initiate electronic voting, the three public keys uploaded by the initiator are obtained: B1, B2, and B3, where the three public keys are a public-private key pair (b1, B1), (b2,B2), the public key in (b3,B3), B1=g b1 mod n, B2=g b2 mod n, B3=g b3 mod n, where n is the product of two large prime numbers p and q, That is, n=pq; the b1, b2, and b3 are stored locally by the initiator;

Receive the electronic voting of each participating terminal participating in the voting, wherein the participating terminal randomly selects a public-private key pair (r, R), where R=g r ; the participating terminal calculates the account address acceptAcc1 for voting consent =B1*g KDF(DH(r, B2)) ; or, the account address used to vote against acceptAcc2=B1*g KDF(DH(r,B3)) ; then the first vote corresponding to the participant The balance in the account is transferred to the second voting account corresponding to acceptAcc1 or the second voting account corresponding to acceptAcc2 to generate the electronic vote;

After the voting agenda is over, receive the collection request from the initiator, where the collection request includes the address of the account that needs to be collected, and the initiator uses acceptAcc1`=B1*gKDF(DH(R,b2 )) Calculate the voting account corresponding to each participating terminal, and calculate the voting account corresponding to each participating terminal through the formula acceptAcc2`=B1*gKDF(DH(R,b3)), where the acceptAcc1 =acceptAcc1`, acceptAcc2=acceptAcc2`;

Collect all the balances in the voting account corresponding to acceptAcc1` into the approval account for storing approval votes, and collect all the balances in the voting account corresponding to acceptAcc2` into the opposition account for storing negative votes middle.
The computer device according to claim 9, wherein after the step of judging whether the initiating terminal is qualified to initiate electronic voting through a smart contract, the method further comprises:

Establish the consent account and the objection account.
9. The computer device according to claim 9, wherein, before the step of receiving electronic voting from each participating terminal participating in the voting, it comprises:

Receiving the identity CA certificate of the participant, and using the first private key of the identity CA certificate to sign the electronic voting application to obtain the Sig;

Generate a second private key corresponding to the participating end and the voting agenda, and use the second private key to generate a certificate to apply for CSR;

Sending the identity CA certificate, Sig, CSR, and the account address of the participant end to the initiating end for identity verification;

If the identity verification passed information fed back by the initiator is received, the command "receive the electronic voting of each participant participating in the voting" is generated.
11. The computer device according to claim 11, wherein, before the step of receiving the electronic voting of each participant participating in the voting, the method further comprises:

Obtain the number of votes held by the participating terminal and the voting weight value of the participating terminal through a smart contract;

Multiplying the number of votes by the voting weight value through a smart contract to obtain the balance of the participating terminal;

The first voting account with the balance and the opening key being the second private key is created through a smart contract.
The computer device according to claim 12, wherein the step of obtaining the number of votes held by the participant terminal and the voting weight value of the participant terminal through a smart contract comprises:

Determine the application type of the electronic voting application;

The number of votes held by the participating terminal and the voting weight value of the participating terminal are determined according to the application type.
The computer device according to claim 9, wherein before the step of judging whether the initiating terminal is qualified to initiate electronic voting through a smart contract, it comprises:

Acquiring face information of the terminal user corresponding to the initiator;

Judging whether the face information matches the initiator;

If it matches, execute the step of judging whether the initiator is qualified to initiate electronic voting through the smart contract.
A computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, an electronic voting method is implemented. The method includes the steps:

Receiving an electronic voting application sent by the initiating end, wherein the electronic voting application contains information about the proposed scheme and the voting agenda;

Judge whether the initiator is qualified to initiate electronic voting through the smart contract;

If it is judged that the initiator is qualified to initiate electronic voting, the three public keys uploaded by the initiator are obtained: B1, B2, and B3, where the three public keys are a public-private key pair (b1, B1), (b2,B2), the public key in (b3,B3), B1=g b1 mod n, B2=g b2 mod n, B3=g b3 mod n, where n is the product of two large prime numbers p and q, That is, n=pq; the b1, b2, and b3 are stored locally by the initiator;

Receive the electronic voting of each participating terminal participating in the voting, wherein the participating terminal randomly selects a public-private key pair (r, R), where R=g r ; the participating terminal calculates the account address acceptAcc1 for voting consent =B1*g KDF(DH(r, B2)) ; or, the account address used to vote against acceptAcc2=B1*g KDF(DH(r,B3)) ; then the first vote corresponding to the participant The balance in the account is transferred to the second voting account corresponding to acceptAcc1 or the second voting account corresponding to acceptAcc2 to generate the electronic vote;

After the voting agenda is over, receive the collection request from the initiator, where the collection request includes the address of the account that needs to be collected, and the initiator uses acceptAcc1`=B1*gKDF(DH(R,b2 )) Calculate the voting account corresponding to each participating terminal, and calculate the voting account corresponding to each participating terminal through the formula acceptAcc2`=B1*gKDF(DH(R,b3)), where the acceptAcc1 =acceptAcc1`, acceptAcc2=acceptAcc2`;

Collect all the balances in the voting account corresponding to acceptAcc1` into the approval account for storing approval votes, and collect all the balances in the voting account corresponding to acceptAcc2` into the opposition account for storing negative votes middle.
The computer-readable storage medium according to claim 15, wherein after the step of judging whether the initiating terminal is qualified to initiate electronic voting through a smart contract, the method further comprises:

Establish the consent account and the objection account.
15. The computer-readable storage medium according to claim 15, wherein before the step of receiving the electronic voting of each participant participating in the voting, it comprises:

Receiving the identity CA certificate of the participant, and using the first private key of the identity CA certificate to sign the electronic voting application to obtain the Sig;

Generate a second private key corresponding to the participating end and the voting agenda, and use the second private key to generate a certificate to apply for CSR;

Sending the identity CA certificate, Sig, CSR, and the account address of the participant end to the initiating end for identity verification;

If the identity verification passed information fed back by the initiator is received, the command "receive the electronic voting of each participant participating in the voting" is generated.
18. The computer-readable storage medium according to claim 17, wherein before the step of receiving the electronic voting of each participant participating in the voting, the method further comprises:

Obtain the number of votes held by the participating terminal and the voting weight value of the participating terminal through a smart contract;

Multiplying the number of votes by the voting weight value through a smart contract to obtain the balance of the participating terminal;

The first voting account with the balance and the opening key being the second private key is created through a smart contract.
18. The computer-readable storage medium according to claim 18, wherein the step of obtaining the number of votes held by the participant terminal and the voting weight value of the participant terminal through a smart contract comprises:

Determine the application type of the electronic voting application;

The number of votes held by the participating terminal and the voting weight value of the participating terminal are determined according to the application type.
The computer-readable storage medium according to claim 15, wherein before the step of judging whether the initiating terminal is qualified to initiate electronic voting through a smart contract, the method comprises:

Acquiring face information of the terminal user corresponding to the initiator;

Judging whether the face information matches the initiator;

If it matches, execute the step of judging whether the initiator is qualified to initiate electronic voting through the smart contract.