CN108768607A - A kind of voting method, device, equipment and medium based on block chain - Google Patents
A kind of voting method, device, equipment and medium based on block chain Download PDFInfo
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- CN108768607A CN108768607A CN201810455285.6A CN201810455285A CN108768607A CN 108768607 A CN108768607 A CN 108768607A CN 201810455285 A CN201810455285 A CN 201810455285A CN 108768607 A CN108768607 A CN 108768607A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/008—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols involving homomorphic encryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0643—Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
- H04L9/3006—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy underlying computational problems or public-key parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
- H04L9/3255—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures using group based signatures, e.g. ring or threshold signatures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
- H04L9/3257—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures using blind signatures
Abstract
The step of the invention discloses a kind of voting method, device, equipment and medium based on block chain, this method includes：Obtain the ballot value that characterization ballot is intended in each ballot node；According to the homomorphism public key that count of votes node is generated by homomorphic encryption algorithm, each ballot value is encrypted to generate secret value；Each secret value, which is transmitted to operation, the common recognition node of block chain intelligence contract, and controls common recognition node and carry out summation operation to each secret value, to obtain encrypted vote result；The homomorphism private key that control count of votes node is generated by homomorphic encryption algorithm, encrypted vote result is decrypted to obtain original voting results, and original voting results are recorded in block chain by block chain intelligence contract, for each node publicity into block chain network.Present method ensures the fairness of count of votes process and the ballot efficiency of entirety.In addition, the present invention also provides a kind of balloting device, equipment and medium based on block chain, advantageous effect are same as above.
Description
Technical field
The present invention relates to block chain technical fields, more particularly to a kind of voting method, device, equipment based on block chain
And medium.
Background technology
Current electronic voting (e-voting) system is often based on the centralized system of Proxy Signature, ring signatures.It is throwing
Ballot node or the Proxy Signature by interacting generation ballot with count of votes node during ticket, or pass through other ballot nodes
Public key generates the ring signatures of ballot, is voted anonymously with realizing, Proxy Signature or ring signatures are sent to count of votes section by final vote node
Point carries out poll statistics and result is carried out publicity.
Due in current electronic voting system, since the count of votes process of count of votes node is underground, being also difficult to ensure
Fairness of the count of votes node in count of votes.In addition, when using ballot is realized based on ring signatures technology, each node of voting needs
The ring signatures to generate itself are interacted with other ballot nodes respectively, therefore when the substantial amounts for node of voting, respectively
The process that node of voting generates ring signatures is complicated, computationally intensive, it is difficult to ensure whole ballot efficiency, it can be to electronic voting system
Availability impact.
It can be seen that a kind of voting method based on block chain is provided, to ensure the fairness and entirety of count of votes process
Ballot efficiency, be those skilled in the art's urgent problem to be solved.
Invention content
The object of the present invention is to provide a kind of voting method, device, equipment and medium based on block chain, to ensure count of votes
The fairness of process and the ballot efficiency of entirety.
In order to solve the above technical problems, the present invention provides a kind of voting method based on block chain, including：
Obtain the ballot value that characterization ballot is intended in each ballot node；
According to the homomorphism public key that count of votes node is generated by homomorphic encryption algorithm, each ballot value is encrypted to generate encryption
Value；
Each secret value, which is transmitted to operation, the common recognition node of block chain intelligence contract, and controls common recognition node to each encryption
Value carries out summation operation, to obtain encrypted vote result；
The homomorphism private key that control count of votes node is generated by homomorphic encryption algorithm, is decrypted to obtain to encrypted vote result
Original voting results, and original voting results being recorded in block chain by block chain intelligence contract, for block chain
Each node publicity in network.
Preferably, after the ballot value that characterization ballot is intended in obtaining each ballot node, this method further comprises：
Control each ballot node by preset digest algorithm and signature private key to include in itself ballot value throwing
Ticket information carries out digest, obtains signed data；
Each signed data is recorded into block chain by block chain intelligence contract.
Preferably, digest algorithm is specially SHA256 digest algorithms or SM3 digest algorithms, signature private key especially by
ECDSA algorithms or SM2 algorithms or SM9 algorithms generate.
Preferably, homomorphic encryption algorithm is specially EC-ElGamal homomorphic encryption algorithms.
Preferably, EC-ElGamal homomorphic encryption algorithms are specially EC-ElGamal additive homomorphism Encryption Algorithm.
Preferably, the value of ballot value includes 0 and 1；Wherein, when ballot value is 0, characterization ballot is intended to oppose, works as throwing
Characterization ballot is intended to agree with when ticket value is 1.
Preferably, ballot node is specially mobile terminal.
In addition, the present invention also provides a kind of balloting devices based on block chain, including：
Acquisition module, for obtaining the ballot value that characterization ballot is intended in each ballot node；
Encrypting module, the homomorphism public key for being generated by homomorphic encryption algorithm according to count of votes node carry out each ballot value
Encryption is to generate secret value；
Computing module is transmitted, has the common recognition node of block chain intelligence contract for each secret value to be transmitted to operation, and control
System common recognition node carries out summation operation to each secret value, to obtain encrypted vote result；
Deciphering module, the homomorphism private key generated by homomorphic encryption algorithm for controlling count of votes node, to encrypted vote knot
Fruit is decrypted to obtain original voting results, and original voting results are recorded in block chain by block chain intelligence contract,
For each node publicity into block chain network.
In addition, the present invention also provides a kind of ballot equipment based on block chain, including：
Memory, for storing computer program；
Processor is realized when for executing computer program such as the step of above-mentioned voting method based on block chain.
In addition, the present invention also provides a kind of computer readable storage medium, meter is stored on computer readable storage medium
Calculation machine program is realized when computer program is executed by processor such as the step of above-mentioned voting method based on block chain.
Voting method provided by the present invention based on block chain, obtains the ballot value of each ballot node, and then uses
Each ballot value is encrypted as secret value by the homomorphism public key that count of votes node is generated by homomorphic encryption algorithm, and is transmitted to operation and has area
The common recognition node of block chain intelligence contract, by know together node to each secret value carry out summation operation generate encrypted vote as a result, into
And it obtains the encrypted vote result of common recognition node using count of votes node and it is decrypted to obtain original throwing using homomorphism private key
Original voting results as a result, be finally recorded in by block chain intelligence contract in block chain, with into block chain network by ticket
Each node publicity.This method ensures to decrypt the result of gained after carrying out operation to secret value and to throwing using homomorphic encryption algorithm
The result that ticket value directly carries out identical operation is identical, and then summation operation can be directly carried out in the form of secret value, ensure that
The safety of operation.In addition, since common recognition node operation has block chain intelligence contract, common recognition node is by block chain network
Other nodes trusted, and then ensure the fairness of count of votes process；And in the method, respectively ballot node is all made of together
State Encryption Algorithm carries out respective handling to ballot value, and since the execution content of homomorphic encryption algorithm is relatively easy, calculation amount
It is small, therefore ensure whole ballot efficiency relatively.In addition, the balloting device that the present invention also provides a kind of based on block chain, setting
Standby and medium, advantageous effect are same as above.
Description of the drawings
In order to illustrate the embodiments of the present invention more clearly, attached drawing needed in the embodiment will be done simply below
It introduces, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ordinary skill people
For member, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of flow chart of the voting method based on block chain provided in an embodiment of the present invention；
Fig. 2 is the flow chart of another voting method based on block chain provided in an embodiment of the present invention；
Fig. 3 is the flow sequence diagram of the voting method based on block chain；
Fig. 4 is a kind of balloting device structure chart based on block chain provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, without making creative work, what is obtained is every other by those of ordinary skill in the art
Embodiment belongs to the scope of the present invention.
Core of the invention is to provide a kind of voting method based on block chain, with ensure count of votes process fairness and
Whole ballot efficiency.Another core of the present invention is to provide a kind of balloting device and medium based on block chain.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Implement profit one
Fig. 1 is a kind of flow chart of the voting method based on block chain provided in an embodiment of the present invention.Referring to FIG. 1, base
Include in the specific steps of the voting method of block chain：
Step S10：Obtain the ballot value that characterization ballot is intended in each ballot node.
It should be noted that ballot node should be the node operated in block chain network, to be able to carry out block chain machine
Relevant operation under system.The quantity of ballot node in this step is often multiple, and particular number should be set according to actual conditions
It is fixed, it is not specifically limited herein.In addition, each ballot node is intended to by the corresponding ballot of ballot value characterization, and ballot value
Correspondence between being intended to ballot should be set according to actual conditions, such as can the value of ballot value be positioned 0 or 1,
When ballot value is 0, characterization ballot is intended to " oppose "；When ballot value is 1, characterization ballot is intended to " agreeing with ".Above-mentioned example
Son is only to illustrate to be not intended as the restriction to ballot value value there are correspondence between ballot value and ballot intention.
Step S11：According to the homomorphism public key that count of votes node is generated by homomorphic encryption algorithm, to each ballot value be encrypted with
Generate secret value.
It should be noted that homomorphic cryptography is the cryptological technique of the computational complexity theory based on difficult math question, to warp
The data for crossing homomorphic cryptography are handled to obtain an output, this output is decrypted, result with at Same Way
Output that the initial data of reason unencryption obtains is the result is that the same.In addition, the precondition for executing this step is count of votes node
Generate homomorphism key (including public key and private key) according to homomorphic encryption algorithm, so count of votes node need open homomorphism public key for
Node other than count of votes node uses, and itself retains homomorphism private key.This step is public by the homomorphism disclosed in count of votes node
The ballot value that key generates each ballot node is encrypted and generates secret value, and then participates in subsequent hold by using secret value
Row step can ensure that the specific ballot content of ballot node is not leaked, and improve the crypticity of ballot.In addition, to ballot value
The executive agent being encrypted can be each ballot node itself, can also be the node other than voting node, node of such as knowing together,
It is not specifically limited herein.In addition, homomorphic encryption algorithm signified in this step, is for additive homomorphism Encryption Algorithm and to multiply
The general designation of method homomorphic encryption algorithm, and it is above-mentioned since there are transforming relationships, above two to calculate between multiplication and addition
The homomorphic encryption algorithm of type can be realized in this step to being asked secret value in the encryption of ballot value and subsequent step
And operation.
Step S12：Each secret value, which is transmitted to operation, the common recognition node of block chain intelligence contract, and controls common recognition node
Summation operation is carried out to each secret value, to obtain encrypted vote result.
Signified common recognition node is to execute the node for having block chain intelligence contract in this step, is by institute in block chain network
There is the working node that node is trusted, therefore the public affairs that summation operation ensure that operation are carried out to secret value by control common recognition node
Positivity.It should be noted that in practical situations, the quantity for node of knowing together is usually multiple, phase is followed between each node of knowing together
Same block chain intelligence contract, block chain is recorded in a distributed fashion in each common recognition node, and then passes through each common recognition
Block in node can restore complete block chain in current block chain network.
Step S13：The homomorphism private key that control count of votes node is generated by homomorphic encryption algorithm, carries out encrypted vote result
Decryption obtains original voting results, and original voting results are recorded in block chain by block chain intelligence contract, for
Each node publicity into block chain network.
It is understood that since count of votes node retains the homomorphism private key being generated in advance in itself, this step needs
It controls count of votes node to be decrypted by homomorphism private key pair encryption data, and then obtains original voting results.Due to using same
The encryption and subsequent decryption that state Encryption Algorithm carries out ballot value, therefore can ensure obtained original voting results just
True property.After original voting results are recorded in block chain, each node under block chain mechanism can be obtained by node of knowing together
Get original voting results.It is this field skill it should be noted that by block chain intelligence contract by data record in block chain
Technological means well known to art personnel, and the emphasis of this method is that ballot is realized under block chain mechanism using homomorphic encryption algorithm
Operation, does not lie in and how original voting results to be recorded in block chain, therefore related content does not repeat herein.
Voting method provided by the present invention based on block chain, obtains the ballot value of each ballot node, and then uses
Each ballot value is encrypted as secret value by the homomorphism public key that count of votes node is generated by homomorphic encryption algorithm, and is transmitted to operation and has area
The common recognition node of block chain intelligence contract, by know together node to each secret value carry out summation operation generate encrypted vote as a result, into
And it obtains the encrypted vote result of common recognition node using count of votes node and it is decrypted to obtain original throwing using homomorphism private key
Original voting results as a result, be finally recorded in by block chain intelligence contract in block chain, with into block chain network by ticket
Each node publicity.This method ensures to decrypt the result of gained after carrying out operation to secret value and to throwing using homomorphic encryption algorithm
The result that ticket value directly carries out identical operation is identical, and then summation operation can be directly carried out in the form of secret value, ensure that
The safety of operation.In addition, since common recognition node operation has block chain intelligence contract, common recognition node is by block chain network
Other nodes trusted, and then ensure the fairness of count of votes process；And in the method, respectively ballot node is all made of together
State Encryption Algorithm carries out respective handling to ballot value, and since the execution content of homomorphic encryption algorithm is relatively easy, calculation amount
It is small, therefore ensure whole ballot efficiency relatively.
Embodiment two
On the basis of the above embodiments, the present invention also provides a series of preferred embodiments.
Fig. 2 is the flow chart of another voting method based on block chain provided in an embodiment of the present invention.Step in Fig. 2
S10-S13 is identical as Fig. 1, and details are not described herein.
As shown in Fig. 2, as a preferred embodiment, the ballot that characterization ballot is intended in obtaining each ballot node
After value, this method further comprises：
Step S20：Each ballot node is controlled by preset digest algorithm and signature private key to including to throw in itself
The vote information of ticket value carries out digest, obtains signed data.
Step S21：Each signed data is recorded into block chain by block chain intelligence contract.
In order to avoid there is the case where ballot node duplicates ballot or do not vote, can be saved by controlling each ballot
Point is to including that the vote information of ballot value carries out digest to obtain signed data, since ballot node is to use in itself
The signed data that the signature private key of own identification generates is characterized, therefore each signed data can correspond to unique ballot node.
Each signed data is recorded to block chain, all nodes under block chain mechanism can verify each throwing according to signed data
Whether ticket node normally votes, opposite the case where avoiding ballot node from duplicating ballot or do not vote, and then ensures ballot knot
The accuracy of fruit.In addition, equal to data progress informative abstract and by signature private key progress digest by digest algorithm
Technological means known to those skilled in the art, this will not be repeated here, and the digest algorithm for specifically choosing and signature are private
The concrete type of key should be herein not specifically limited depending on particular condition in use.
On the basis of the above embodiment, as a preferred embodiment, digest algorithm is specially SHA256 plucks
Algorithm or SM3 digest algorithms, signature private key is wanted to be generated especially by ECDSA algorithms or SM2 algorithms or SM9 algorithms.
It should be noted that SHA (secure hash algorithm) is a Cryptographic Hash Function family, be FIPS certification peace
Full hashing algorithm can calculate corresponding to a digital information, the fixed character string of length, i.e. eap-message digest, and SHA256
Digest algorithm is comparatively common algorithm in SHA, has higher reliability.SM3, SM2 and SM9 algorithm belong to state
The commercial algorithm of Password Management office of family establishment, in cipher application digital signature and verification, the generation of message authentication code with
Verification and the generation of random number, can meet the demand for security of a variety of cipher applications；In addition, the keys sizes of ECDSA algorithms are small,
Encrypting and decrypting speed is fast, occupies smaller for memory space, therefore have higher availability.
In addition, as a preferred embodiment, homomorphic encryption algorithm is specially EC-ElGamal homomorphic encryption algorithms.
EC-ElGamal homomorphic encryption algorithms are the homomorphic algorithms of current opposite mainstream, have higher reliability, pass through
EC-ElGamal homomorphic encryption algorithms, are encrypted ballot value and operation, be capable of the opposite safety for ensureing secret value and
The reliability of operation result.
The execution of specific EC-ElGamal homomorphic encryption algorithms includes the following steps：
1, parameter generates：E is an elliptic curve on finite field gf (p), and n is the rank of curve E, and G is the base of curve E
Point.
2, key generates：One integer x ∈ GF (p) of random selection is used as private key, calculates public key Y=xG.
3, it encrypts：Input public key Y and plaintext m.
Random number k ∈ [1, n-1] is selected, and calculates R=kG；
Calculate S=m+kY；
Export ciphertext (R, S).
4, it decrypts：Input private key x and ciphertext (R, S).
Calculate m=S-xR；
Export plaintext m.
In the following, characterizing the additive homomorphism operation based on EC-ElGamal homomorphic encryption algorithms in the form of expression formula:
D(E(m1)+E(m2))=D ((R1,S1)+(R2,S2))=D ((k1G,m1+k1Y)+(k2G,m2+k2Y))
=D ((k1G+k2G,m1+m2+k1Y+k2Y))=m1+m2+(k1+k2)Y-x(k1+k2) G=m1+m2。
Wherein, D characterizations to the additive homomorphism operation of encrypted data and；m1Characterization first is in plain text；m2Characterize second plaintext；
k1Characterize the first random number；k2Characterize the second random number.
In addition, homomorphic encryption algorithm can also be that Paillier homomorphic algorithms, user can be selected according to actual demand
It takes.
In addition, as a preferred embodiment, EC-ElGamal homomorphic encryption algorithms are specially EC-ElGamal adds
Method homomorphic encryption algorithm.
It is understood that due to carrying out the complexity of add operation in a computer compared to multiplying smaller, because
Ballot value is encrypted using EC-ElGamal additive homomorphisms Encryption Algorithm for this and the calculation amount smaller of summation operation, into one
Step improves operation efficiency.
In addition, as a preferred embodiment, the value of ballot value includes 0 and 1.
Wherein, when ballot value is 0, characterization ballot is intended to oppose, ballot is characterized when ballot value is 1 and is intended to agree with.
The value of ballot value includes 1 and 0, can more intuitively characterize the intention of ballot, and original voting results energy
Enough directly corresponding with favorable ballot number of nodes, user can throw according to the more intuitive efficient understanding of original voting results
The ballot situation of ticket node.
Ballot is intended to the relationship between ballot value referring to following table：
| Ballot is intended to | It agrees with | Oppose |
| Ballot value | 1 | 0 |
Further, it is contemplated that ballot node can have the right of abstention ballot, ballot to be intended to include " abandoning
Power ".In the case, the relationship that ballot is intended between ballot value is as shown in the table：
| Ballot is intended to | It agrees with | Oppose | Abstention |
| Ballot value | 1 | 0 | Null value |
But be emphasized that since ballot value when ballot is intended to " waive the right " is null value, carrying out homomorphism
When summation operation, null value is identical as operation effect caused by " 0 " value.Further, user can be by judging ballot value
For 0 value or null value, statistics ballot is intended to " to oppose " and the quantity of the node of voting of " abstention ".
In addition, as a preferred embodiment, ballot node is specially mobile terminal.
In view of there is very strong portability due to mobile terminal, ballot can be completed under several scenes.In addition,
The cost of mobile terminal is relatively low, and user base number is larger, therefore may be implemented to vote on a large scale by mobile terminal, and realizes
Overall cost needed for ballot is relatively low.
Embodiment three
A kind of embodiment under concrete application scene is provided below：
In order to make it easy to understand, the flow sequence diagram of the voting method based on block chain shown in please referring to Fig.3.
This application scene embodiment includes the following steps：
1, count of votes node generates a pair of EC-ElGamal encryption keys pair, and public encryption public key retains encryption key；
2, ballot node generates public and private key of signing using SM2/SM9/ECDSA
3, ballot node is encrypted ballot value using the EC-ElGamal encrypted public keys of count of votes node；
4, ballot node generates the abstract of complete vote information using SM3/SHA256 digest algorithms, and uses oneself
SM2/SM9/ECDSA signature private key is sent to after signing to it on block chain；
5, operation have the common recognition node of block chain intelligence contract to it is all by the encrypted ballots of EC-ElGamal be worth into
Row plus homomorphism calculate, and obtain the result of cryptogram computation；
6, count of votes node decryption add homomorphism calculate as a result, obtaining the statistical information of final poll；
7, count of votes node generates the abstract of statistical result using SM3/SHA256 digest algorithms,；
8, count of votes node is sent to after being signed to it using the SM2/SM9/ECDSA signature private key of oneself on block chain, into
And it is all with per family it can be seen that final voting results.
Example IV
Hereinbefore the embodiment of the voting method based on block chain is described in detail, the present invention also provides
A kind of balloting device based on block chain corresponding with this method, due to the embodiment of the embodiment and method part of device part
It corresponds, therefore the embodiment of device part refers to the description of the embodiment of method part, wouldn't repeat here.
Fig. 4 is a kind of balloting device structure chart based on block chain provided in an embodiment of the present invention.The embodiment of the present invention carries
The balloting device based on block chain supplied, including：
Acquisition module 10, for obtaining the ballot value that characterization ballot is intended in each ballot node.
Encrypting module 11, for the homomorphism public key that is generated by homomorphic encryption algorithm according to count of votes node, to each ballot be worth into
Row encryption is to generate secret value.
Computing module 12 is transmitted, has the common recognition node of block chain intelligence contract for each secret value to be transmitted to operation, and
Control common recognition node carries out summation operation to each secret value, to obtain encrypted vote result；
Deciphering module 13, the homomorphism private key generated by homomorphic encryption algorithm for controlling count of votes node, to encrypted vote
As a result it is decrypted to obtain original voting results, and original voting results is recorded in by block chain by block chain intelligence contract
In, for each node publicity into block chain network.
Balloting device provided by the present invention based on block chain, obtains the ballot value of each ballot node, and then uses
Each ballot value is encrypted as secret value by the homomorphism public key that count of votes node is generated by homomorphic encryption algorithm, and is transmitted to operation and has area
The common recognition node of block chain intelligence contract, by know together node to each secret value carry out summation operation generate encrypted vote as a result, into
And it obtains the encrypted vote result of common recognition node using count of votes node and it is decrypted to obtain original throwing using homomorphism private key
Original voting results as a result, be finally recorded in by block chain intelligence contract in block chain, with into block chain network by ticket
Each node publicity.The present apparatus ensures to decrypt the result of gained after carrying out operation to secret value and to throwing using homomorphic encryption algorithm
The result that ticket value directly carries out identical operation is identical, and then summation operation can be directly carried out in the form of secret value, ensure that
The safety of operation.In addition, since common recognition node operation has block chain intelligence contract, common recognition node is by block chain network
Other nodes trusted, and then ensure the fairness of count of votes process；And in the present apparatus, each node of voting is all made of together
State Encryption Algorithm carries out respective handling to ballot value, and since the execution content of homomorphic encryption algorithm is relatively easy, calculation amount
It is small, therefore ensure whole ballot efficiency relatively.
On the basis of example IV, which further includes：
Signature blocks, for controlling encryption of each ballot node by preset digest algorithm and signature private key to itself
Value carries out digest, obtains signed data.
Block chained record module records each signed data into block chain for passing through block chain intelligence contract.
Embodiment five
The present invention also provides a kind of ballot equipment based on block chain, including：
Memory, for storing computer program；
Processor is realized when for executing computer program such as the step of above-mentioned voting method based on block chain.
Ballot equipment provided by the present invention based on block chain, obtains the ballot value of each ballot node, and then uses
Each ballot value is encrypted as secret value by the homomorphism public key that count of votes node is generated by homomorphic encryption algorithm, and is transmitted to operation and has area
The common recognition node of block chain intelligence contract, by know together node to each secret value carry out summation operation generate encrypted vote as a result, into
And it obtains the encrypted vote result of common recognition node using count of votes node and it is decrypted to obtain original throwing using homomorphism private key
Original voting results as a result, be finally recorded in by block chain intelligence contract in block chain, with into block chain network by ticket
Each node publicity.This equipment ensures to decrypt the result of gained after carrying out operation to secret value and to throwing using homomorphic encryption algorithm
The result that ticket value directly carries out identical operation is identical, and then summation operation can be directly carried out in the form of secret value, ensure that
The safety of operation.In addition, since common recognition node operation has block chain intelligence contract, common recognition node is by block chain network
Other nodes trusted, and then ensure the fairness of count of votes process；And in this equipment, each node of voting is all made of together
State Encryption Algorithm carries out respective handling to ballot value, and since the execution content of homomorphic encryption algorithm is relatively easy, calculation amount
It is small, therefore ensure whole ballot efficiency relatively.
The present invention also provides a kind of computer readable storage medium, computer journey is stored on computer readable storage medium
Sequence is realized when computer program is executed by processor such as the step of above-mentioned voting method based on block chain.
The computer readable storage medium of ballot provided by the present invention based on block chain obtains each ballot node
Ballot value, and then each ballot value is encrypted as by secret value using the homomorphism public key that count of votes node is generated by homomorphic encryption algorithm,
And it is transmitted to the common recognition node for running and having block chain intelligence contract, by knowing together, node carries out summation operation generation to each secret value
Encrypted vote is as a result, obtaining the encrypted vote result of common recognition node using count of votes node in turn and being carried out to it using homomorphism private key
Decryption obtain original voting results, finally original voting results are recorded in by block chain intelligence contract in block chain, with to
Each node publicity in block chain network.This computer readable storage medium use homomorphic encryption algorithm, ensure to secret value into
The result of decryption gained is identical as the result of identical operation is directly carried out to ballot value after row operation, and then can be with secret value
Form directly carries out summation operation, ensure that the safety of operation.In addition, since common recognition node operation has block chain intelligently to close
About, therefore common recognition node is trusted by other nodes in block chain network, and then ensures the fairness of count of votes process；And
In this computer readable storage medium, each node of voting is all made of homomorphic encryption algorithm and carries out respective handling to ballot value, and
And since the execution content of homomorphic encryption algorithm is relatively easy, calculation amount is small, therefore ensure whole ballot efficiency relatively.
A kind of voting method, device, equipment and medium based on block chain provided by the present invention have been carried out in detail above
It is thin to introduce.Each embodiment is described by the way of progressive in specification, the highlights of each of the examples are with other realities
Apply the difference of example, just to refer each other for identical similar portion between each embodiment.For device disclosed in embodiment
Speech, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related place is referring to method part illustration
?.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, also
Can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection domain of the claims in the present invention
It is interior.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only that
A little elements, but also include other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Claims (10)
1. a kind of voting method based on block chain, which is characterized in that including：
Obtain the ballot value that characterization ballot is intended in each ballot node；
According to the homomorphism public key that count of votes node is generated by homomorphic encryption algorithm, each ballot value is encrypted to generate encryption
Value；
Each secret value, which is transmitted to operation, the common recognition node of block chain intelligence contract, and controls the common recognition node to each
The secret value carries out summation operation, to obtain encrypted vote result；
The homomorphism private key that the count of votes node is generated by the homomorphic encryption algorithm is controlled, the encrypted vote result is carried out
Decryption obtains original voting results, and the original voting results are recorded in block chain by the block chain intelligence contract
In, for each node publicity into block chain network.
2. according to the method described in claim 1, it is characterized in that, characterizing what ballot was intended in each ballot node of the acquisition
After ballot value, this method further comprises：
Each ballot node is controlled by preset digest algorithm and signature private key to including the ballot value in itself
Vote information carry out digest, obtain signed data；
Each signed data is recorded into the block chain by the block chain intelligence contract.
3. according to the method described in claim 2, it is characterized in that, the digest algorithm be specially SHA256 digest algorithms or
SM3 digest algorithms, the signature private key are generated especially by ECDSA algorithms or SM2 algorithms or SM9 algorithms.
4. according to the method described in claim 1, its characteristic is, the homomorphic encryption algorithm is specially EC-ElGamal homomorphisms
Encryption Algorithm.
5. according to the method described in claim 4, it is characterized in that, the EC-ElGamal homomorphic encryption algorithms are specially EC-
ElGamal additive homomorphism Encryption Algorithm.
6. according to the method described in claim 1, it is characterized in that, the value of the ballot value includes 0 and 1；Wherein, when described
Ballot value characterizes the ballot and is intended to oppose when being 0, the ballot is characterized when the ballot value is 1 and is intended to agree with.
7. according to the method described in claim 1-6 any one, which is characterized in that the ballot node is specially mobile whole
End.
8. a kind of balloting device based on block chain, which is characterized in that including：
Acquisition module, for obtaining the ballot value that characterization ballot is intended in each ballot node；
Encrypting module, the homomorphism public key for being generated by homomorphic encryption algorithm according to count of votes node carry out each ballot value
Encryption is to generate secret value；
Computing module is transmitted, has the common recognition node of block chain intelligence contract for each secret value to be transmitted to operation, and control
It makes the common recognition node and summation operation is carried out to each secret value, to obtain encrypted vote result；
Deciphering module, the homomorphism private key generated by the homomorphic encryption algorithm for controlling the count of votes node add to described
Close voting results are decrypted to obtain original voting results, and by the block chain intelligence contract by the original voting results
It is recorded in block chain, for each node publicity into block chain network.
9. a kind of ballot equipment based on block chain, which is characterized in that including：
Memory, for storing computer program；
Processor is realized as described in any one of claim 1 to 7 based on block chain when for executing the computer program
The step of voting method.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program, the computer program realize the throwing as described in any one of claim 1 to 7 based on block chain when being executed by processor
The step of ticket method.
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| CN113850947B (en) * | 2020-12-28 | 2023-08-29 | 杭州趣链科技有限公司 | Electronic Voting System Based on ElGamal Encryption |
| CN112865980A (en) * | 2021-02-01 | 2021-05-28 | 杭州复杂美科技有限公司 | Block chain encryption voting method, computer device and storage medium |
| CN112784305A (en) * | 2021-02-01 | 2021-05-11 | 杭州复杂美科技有限公司 | Encrypted voting method, computer device, and storage medium |
| CN112995136A (en) * | 2021-02-03 | 2021-06-18 | 浙江泰科数联信息技术有限公司 | K-out-of-m anonymous voting method based on alliance chain |
| CN112863040A (en) * | 2021-03-29 | 2021-05-28 | 中信银行股份有限公司 | Voting result generation, statistics and acquisition method and device and electronic equipment |
| CN115589303A (en) * | 2022-07-11 | 2023-01-10 | 昆明理工大学 | Data sharing and privacy protection method based on SM9 algorithm and cross-chain technology |
| CN115589303B (en) * | 2022-07-11 | 2024-02-27 | 昆明理工大学 | SM9 algorithm and cross-link technology based data sharing and privacy protection method |
| CN115632777A (en) * | 2022-12-12 | 2023-01-20 | 中电长城网际系统应用有限公司 | Data processing method and electronic equipment |
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