KR102023241B1 - Blockchain-based Public Opinion Polling Solution and System - Google Patents

Abstract

The present invention relates to a method and system for providing a blockchain-based poll. A blockchain-based survey method, which is an aspect of the present invention, includes: a first step of collecting, by a blockchain-based distributed network including a plurality of servers, first information about at least one user to be surveyed; A second step of the distributed network distributing and storing the first information; A third step of the distributed network transmitting second information related to a survey to a terminal of a first user authenticated through first information stored in the distributed network among a plurality of users; A fourth step in which the third information determined corresponding to the second information is encrypted in the terminal, and the encrypted third information is transmitted to the distributed network; A fifth step of the distributed network decrypting the encrypted third information to extract the third information; And a sixth step of determining, by the distributed network, a result of the survey using the extracted third information.

Description

Blockchain-based polling method and system {Blockchain-based Public Opinion Polling Solution and System}

The present invention relates to a method and system for providing a blockchain-based poll. Specifically, the present invention relates to a blockchain-based opinion providing technique and a voting verification technique that guarantees reliability. In the blockchain-based Ethereum platform environment, basic polling such as generation of polls, management of subjects, and voting are performed. At the same time, it is proposing a function to verify poll results by individuals or certification bodies.

Opinion polling is a means of examining public opinion of a particular social group, and the results are collected by polling questionnaire of the subjects through a survey paper provided by a polling agency, and the result of the poll is the propensity of the majority opinion on the questions. This value is very valuable because of its use in many institutions and systems.

Due to this, the problem of forgery and alteration of the polls is considered, and the reliability of the survey results is an important issue. Recently, a study on the voting method that guarantees reliability based on the blockchain, which is a distributed book management technique that cannot be forged, has been conducted. Is appearing.

However, since the conventional method provides only basic functions for voting, it is difficult to use in a poll composed of various questions and cannot support a voting result verification service for more reliable results.

Therefore, in order to solve the above problems, while storing the result value safely using a blockchain, the result value is very simply verified, and there is an increasing demand for a solution for increasing the efficiency and reliability of the poll.

Korean Patent Office Registration No. 10-1205385 International application number PCT / US2009 / 038901

The present invention aims to provide a user with a method and system for providing a blockchain-based poll.

Specifically, the present invention relates to a blockchain-based opinion providing technique and a voting verification technique that guarantees reliability. In the blockchain-based Ethereum platform environment, basic polling such as generation of polls, management of subjects, and voting are performed. At the same time, we propose a verification function of poll results by individuals or certification bodies.

On the other hand, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly to those skilled in the art from the following description. It can be understood.

In accordance with another aspect of the present invention, there is provided a blockchain-based survey method, wherein a blockchain-based distributed network including a plurality of servers collects first information about at least one user to be surveyed. First step; A second step of the distributed network distributing and storing the first information; A third step of the distributed network transmitting second information related to a survey to a terminal of a first user authenticated through first information stored in the distributed network among a plurality of users; A fourth step in which the third information determined corresponding to the second information is encrypted in the terminal, and the encrypted third information is transmitted to the distributed network; A fifth step of the distributed network decrypting the encrypted third information to extract the third information; And a sixth step of determining, by the distributed network, a result of the survey using the extracted third information.

Also, after the sixth step, the distributed network receives the verification request from the verification authority in step 7-1; A step 7-2 of the distributed network to decrypt the encrypted third information to extract the third information, and to determine a re-result for the survey using the extracted third information; And a third step, in which the verification institution compares and verifies the result of the survey performed by the distributed network and the re-result.

Also, after the sixth step, an eighth step of receiving, by the terminal of the authenticated first user, the encrypted third information from the distributed network; An eighth step of extracting the third information by decrypting the encrypted third information at a terminal of the authenticated first user; And checking, by the terminal of the authenticated first user, whether the information previously input by the first user and the third information correspond to each other and verifying the same.

The survey may be a poll, the second information may be information indicating a plurality of candidates, and the third information may be a candidate indicating at least one candidate of the plurality of candidates.

In addition, the blockchain-based distributed network may be an Ethereum platform.

On the other hand, the blockchain-based survey system according to another aspect of the present invention for achieving the above technical problem, the blockchain-based distribution consisting of a plurality of servers for collecting the first information for at least one user to be investigated network; And a terminal of a first user authenticated through first information stored in the distributed network among a plurality of users, wherein the distributed network stores and distributes the first information to the terminal of the first user. And transmitting the second information associated with the third information, wherein the third information determined corresponding to the second information is encrypted at the terminal, and the encrypted third information is transmitted to the distributed network, the distributed network is encrypted. The third information may be decoded to extract the third information, and the result of the survey may be determined using the extracted third information.

In addition, when the distributed network receives a verification request from a verification authority, the distributed network decrypts the encrypted third information, extracts the third information, and uses the extracted third information to search for the survey. The results of the ashes may be determined, and the results of the survey performed by the distributed network may be compared with the results of the ashes.

In addition, the terminal of the authenticated first user receives the encrypted third information from the distributed network, decrypts the encrypted third information to extract the third information, and the first user in the past It may be verified by checking whether the input information and the third information match.

The survey may be a poll, the second information may be information indicating a plurality of candidates, and the third information may be a candidate indicating at least one candidate of the plurality of candidates.

In addition, the blockchain-based distributed network may be an Ethereum platform.

The present invention may provide a user with a blockchain-based poll providing method and system.

Specifically, the present invention relates to a blockchain-based opinion providing technique and a voting verification technique that guarantees reliability. In the blockchain-based Ethereum platform environment, basic polling such as generation of polls, management of subjects, and voting are performed. At the same time, you may want to suggest a verification function for poll results from individuals or certification bodies.

In order to solve the above problem, the present invention proposes a solution for improving efficiency and reliability of a survey in that the result value can be verified very simply while safely storing the result value using a blockchain. As it can be used as a method, it has high marketability.

On the other hand, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly to those skilled in the art from the following description. It can be understood.

However, effects obtained in the present invention are not limited to the above-mentioned effects, and other effects not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

1 is a block diagram illustrating a terminal applied to the present invention.
FIG. 2 is a block diagram illustrating an example of a polling system provided based on the terminal described with reference to FIG. 1.
3 is a view for explaining an example of a polling system according to a conventional method.
4 is a view for explaining the structure of the poll smart contract in the blockchain-based poll proposed by the present invention.
5 illustrates an example of a blockchain-based polling system proposed by the present invention.
FIG. 6 illustrates a process of generating, managing, and performing a poll by the blockchain-based poll system described in FIG. 5.
FIG. 7 is an example of an activity diagram illustrating the poll generation process described in FIG. 6 in more detail.
FIG. 8 illustrates a process of verifying a poll result by the blockchain-based poll system described in FIG. 5.
FIG. 9 illustrates an example of an activity diagram that describes the poll verification process described in FIG. 8 in more detail.
10 is a view for explaining the encryption and decryption process of poll poll data in the system proposed by the present invention.
FIG. 11A is a diagram illustrating a conventional public key / secret key encryption method, and FIG. 11B is a diagram for explaining a process of encrypting and decrypting voting data proposed by the present invention.

Prior to describing the method proposed by the present invention, a terminal 100, which is a device used by users who are subject to a survey, will be described in detail.

1 is a block diagram illustrating a terminal applied to the present invention.

Referring to FIG. 1, the terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, and a memory ( 160, an interface unit 170, a controller 180, a power supply unit 190, and the like.

However, since the components shown in FIG. 1 are not essential, a terminal having more components or fewer components may be implemented.

Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules that enable wireless communication between the terminal and the wireless communication system or between the device and the network in which the device is located.

For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short range communication module 114, a location information module 115, and the like. .

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel.

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal.

The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 may include, for example, Digital Multimedia Broadcasting-Terrestrial (DMB-T), Digital Multimedia Broadcasting-Satellite (DMB-S), Media Forward Link Only (MediaFLO), and Digital Video Broadcast (DVB-H). Digital broadcast signals can be received using digital broadcasting systems such as Handheld and Integrated Services Digital Broadcast-Terrestrial (ISDB-T). Of course, the broadcast receiving module 111 may be configured to be suitable for not only the above-described digital broadcasting system but also other broadcasting systems.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 transmits and receives a wireless signal with at least one of a base station, an external device, and a server on a mobile communication network.

It may include various types of data according to text and multimedia message transmission and reception.

The wireless internet module 113 refers to a module for wireless internet access and may be embedded or external to the terminal. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

The short range communication module 114 refers to a module for short range communication. Short range communication technologies include Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and Wireless Fidelity (Wi-Fi). Can be used.

The location information module 115 is a module for obtaining a location of a terminal, and a representative example thereof is a GPS (Global Position System) module.

Referring to FIG. 1, the A / V input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the photographing mode. The processed image frame may be displayed on the display unit 151.

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. Two or more cameras 121 may be provided according to the use environment.

The microphone 122 receives an external sound signal by a microphone in a recording mode or a voice recognition mode, and processes the external sound signal into electrical voice data. The processed voice data may be converted into a form transmittable to the mobile communication base station through the mobile communication module 112 and output. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.

The user input unit 130 generates input data for the user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like.

The sensing unit 140 generates a sensing signal for controlling the operation of the terminal by detecting a current state of the terminal, such as an open / closed state of the terminal, a position of the terminal, presence or absence of a user, orientation of the terminal, acceleration / deceleration of the terminal, and the like.

The sensing unit 140 may sense whether the power supply unit 190 supplies power or whether the interface unit 170 is coupled to an external device.

The sensing unit 140 may include a proximity sensor 141.

In addition, the sensing unit 140 may further include an ultrasonic sensor 142.

The ultrasonic sensor 142 refers to a sensor using a characteristic of ultrasonic waves, which is a sound of a frequency (about 20 KHz or more) high enough to be inaudible to a human ear.

Ultrasound can be used for air, liquids and solids. The high frequency and short wavelength make it possible to measure high resolution.

The wavelength used for the ultrasonic sensor 142 is determined according to the sound speed of the medium and the frequency of the sound waves, 1 mm to 100 mm in a fish finder or sonar in the sea, 0.5 mm to 15 mm in a metal flaw detector, and 5 to 35 in a gas. It is about mm.

The ultrasonic sensor 142 is the same as the transmitting element and receiving element of the ultrasonic wave, and a magnetostrictive material (ferrite, etc.), a voltage, and an electrostrictive material (Rochelle salt, barium titanate, etc.) are used as the sensor material.

The output unit 150 is used to generate an output related to visual, auditory or tactile senses, which includes a display unit 151, an audio output module 152, an alarm unit 153, a haptic module 154, and a projector module ( 155) may be included.

The display unit 151 displays (outputs) information processed in the terminal.

The display unit 151 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display (flexible). and at least one of a 3D display.

Some of these displays can be configured to be transparent or light transmissive so that they can be seen from the outside. This may be referred to as a transparent display. A representative example of the transparent display is TOLED (Transparant OLED). The rear structure of the display unit 151 may also be configured as a light transmissive structure. With this structure, the user can see the object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

There may be two or more display units 151 according to the implementation form of the terminal. For example, a plurality of display units may be spaced apart or integrally disposed on one surface of the terminal, or may be disposed on different surfaces.

When the display unit 151 and a sensor for detecting a touch operation (hereinafter, referred to as a touch sensor) form a mutual layer structure (hereinafter referred to as a touch screen), the display unit 151 may be configured in addition to an output device. Can also be used as an input device. The touch sensor may have, for example, a form of a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in pressure applied to a specific portion of the display unit 151 or capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor may be configured to detect not only the position and area of the touch but also the pressure at the touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and then transmits the corresponding data to the controller 180. As a result, the controller 180 can know which area of the display unit 151 is touched.

The proximity sensor 141 may be disposed in an inner region of the terminal surrounded by the touch screen or near the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or an object present in the vicinity without using a mechanical contact by using an electromagnetic force or infrared rays. Proximity sensors have a longer life and higher utilization than touch sensors.

Examples of the proximity sensor include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. When the touch screen is capacitive, the touch screen is configured to detect the proximity of the pointer by the change of the electric field according to the proximity of the pointer. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of explanation, the act of allowing the pointer to be recognized without being in contact with the touch screen so that the pointer is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching the pointer on the screen is called "contact touch." The position where the proximity touch is performed by the pointer on the touch screen refers to a position where the pointer is perpendicular to the touch screen when the pointer is in proximity proximity.

The proximity sensor detects a proximity touch and a proximity touch pattern (for example, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, and a proximity touch movement state). Information corresponding to the sensed proximity touch operation and proximity touch pattern may be output on the touch screen.

The sound output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a recording mode, a voice recognition mode, a broadcast receiving mode, and the like. The sound output module 152 may also output a sound signal related to a function performed in the terminal. The sound output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying occurrence of an event of the terminal.

The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than a video signal or an audio signal, for example, vibration.

The video signal or the audio signal may be output through the display unit 151 or the audio output module 152, so that they 151 and 152 may be classified as part of the alarm unit 153.

The haptic module 154 generates various haptic effects that a user can feel. Vibration is a representative example of the haptic effect generated by the haptic module 154. The intensity and pattern of vibration generated by the haptic module 154 can be controlled.

For example, different vibrations may be synthesized and output or may be sequentially output.

In addition to vibration, the haptic module 154 may be configured to provide a pin array that vertically moves with respect to the contact skin surface, a jetting force or suction force of air through the jetting or suction port, grazing to the skin surface, contact of the electrode, electrostatic force, and the like. Various tactile effects can be generated, such as effects by the endothermic and the reproduction of a sense of cold using the elements capable of endotherm or heat generation.

The haptic module 154 may not only deliver the haptic effect through direct contact, but also may implement the user to feel the haptic effect through a muscle sense such as a finger or an arm. The haptic module 154 may be provided with two or more according to the configuration aspect of the terminal.

The projector module 155 is a component for performing an image project function using a terminal. The projector module 155 is the same as or at least a part of the image displayed on the display unit 151 according to a control signal of the controller 180. Other images can be displayed on an external screen or wall.

In detail, the projector module 155 may include a light source (not shown) for generating light (for example, laser light) for outputting the image to the outside, and an image for output to the outside using the light generated by the light source. And an image generating means (not shown), and a lens (not shown) for expanding and outputting the image to the outside at a predetermined focal length. In addition, the projector module 155 may include an apparatus (not shown) which may mechanically move the lens or the entire module to adjust the image projection direction.

The projector module 155 may be divided into a cathode ray tube (CRT) module, a liquid crystal display (LCD) module, a digital light processing (DLP) module, and the like, according to the device type of the display means. In particular, the DLP module may be advantageous in miniaturization of the projector module 151 by expanding and projecting an image generated by reflecting light generated from a light source to a digital micromirror device (DMD) chip.

Preferably, the projector module 155 may be provided in the longitudinal direction on the side, front or back of the terminal. Of course, the projector module 155 may be provided at any position of the terminal as necessary.

The memory unit 160 may store a program for processing and controlling the controller 180 and may temporarily store input / output data (eg, a message, audio, still image, video, etc.). You can also do The memory unit 160 may also store the frequency of use of each of the data. In addition, the memory unit 160 may store data regarding vibration and sound of various patterns output when a touch input on the touch screen is performed.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), RAM (Random Access Memory, RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), Magnetic Memory, Magnetic It may include a storage medium of at least one type of disk, optical disk. The terminal may operate in association with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a path with all external devices connected to the terminal. The interface unit 170 receives data from an external device, receives power, delivers the power to each component inside the terminal, or transmits data within the terminal to the external device. For example, wired / wireless headset ports, external charger ports, wired / wireless data ports, memory card ports, ports for connecting devices with identification modules, audio input / output (I / O) ports, The video input / output (I / O) port, the earphone port, and the like may be included in the interface unit 170.

The identification module is a chip that stores various types of information for authenticating a user's right of use, and includes a user identification module (UIM), a subscriber identify module (SIM), and a universal subscriber identity module (Universal Subscriber Identity Module). , USIM), and the like. A device equipped with an identification module (hereinafter referred to as an 'identification device') may be manufactured in the form of a smart card. Therefore, the identification device may be connected to the terminal through the port.

The interface unit may be a passage through which power from the cradle is supplied to the terminal when the terminal is connected to an external cradle, or a passage through which various command signals input from the cradle by a user are transferred to the mobile device. have. Various command signals or power input from the cradle may be operated as signals for recognizing that the mobile device is correctly mounted on the cradle.

The controller 180 typically controls the overall operation of the terminal.

The controller 180 may include a multimedia module 181 for playing multimedia. The multimedia module 181 may be implemented in the controller 180 or may be implemented separately from the controller 180.

The controller 180 may perform a pattern recognition process for recognizing a writing input or a drawing input performed on the touch screen as text and an image, respectively.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

Various embodiments described herein may be implemented in a recording medium readable by a computer or similar device using, for example, software, hardware or a combination thereof.

According to a hardware implementation, the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and the like. It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. The described embodiments may be implemented by the controller 180 itself.

According to the software implementation, embodiments such as the procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more functions and operations described herein. Software code may be implemented in software applications written in a suitable programming language. The software code may be stored in the memory 160 and executed by the controller 180.

On the other hand, public opinion surveys may be performed using the terminal 100 described above.

Public opinion polls are a means of identifying public opinions of a particular social group, and the results are collected by polling questionnaire of the subjects through polls provided by a polling agency.

The results of the polls indicate the propensity of the majority of the questions to be answered, so their use in many institutions and systems is very valuable.

This considers the problem of forgery and alteration in the public opinion poll, and guarantees the reliability of the survey results.

FIG. 2 is a block diagram illustrating an example of a polling system provided based on the terminal described with reference to FIG. 1.

Referring to FIG. 2, the polling system 10 provided based on a terminal collects information from a requesting officer 300 requesting a poll and a plurality of terminals 100 of a user to extract data related to a poll. And a polling server 200 or the like provided to the requesting institution.

Here, the requesting authority 300, the polling server 200, and the terminal 100 may communicate according to any one of short range communication or long distance communication.

The short range communication may include ANT, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), and ZigBee technology.

In addition, telecommunication includes code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), and single carrier frequency division multiple access (SC-FDMA). It may include.

3 is a view for explaining an example of a polling system according to a conventional method.

Referring to FIG. 3, the server 200 receives a request from the polling requesting agency 300 and discusses the contents thereof.

Thereafter, the server 200 prepares the survey and collects data from the plurality of terminals 100.

In this case, separate software may be used.

Thereafter, the server 200 processes the collected data, analyzes the result, and then provides a report to the requesting institution 300.

However, this conventional method has a serious problem that there is a possibility of forgery and alteration of the polls, so that the reliability of the survey results is not guaranteed.

Recently, researches on the voting method which guarantees the reliability based on the blockchain, which is a distributed book management technique that cannot be forged, have appeared.

However, this method provides only basic functions for voting, so it is difficult to use in a poll composed of various questions and cannot support a voting result verification service for more reliable results.

Therefore, in this specification, to solve this problem, a blockchain-based poll providing method and system are provided to the user.

Specifically, the present invention relates to a blockchain-based opinion providing technique and a voting verification technique that guarantees reliability. In the blockchain-based Ethereum platform environment, basic polling such as generation of polls, management of subjects, and voting are performed. At the same time, we propose a verification function of poll results by individuals or certification bodies.

Prior to the detailed description of the present invention, the blockchain and the Ethereum platform will be described in advance.

First, blockchain security technology, also known as public transaction books, is a technology that prevents hacking that may occur when trading in virtual currency.

Traditional financial firms keep transaction records on a centralized server, while blockchain sends transaction details to all users participating in a transaction and checks each transaction for counterfeiting.

Blockchain is applied to Bitcoin, a leading online virtual currency.Bitcoin transparently records transaction history in a book that anyone can read, and various computers using Bitcoin verify this record every 10 minutes. To prevent hacking.

Next, Ethereum is a cryptocurrency developed in 2014 by Canadian immigrant Canadian Vitalik Buterin.

It is based on blockchain technology, in which blocks containing transaction specifications are connected like a chain, and can be transmitted anywhere with an internet connection.

You can buy them on the exchange with Bitcoin or mine them with a computer program like Bitcoin.

Ethereum, a blockchain-based decentralized application (Dapp) providing platform, allows anyone to program anything on the blockchain (Turning completeness), and publish all executable code and execution transaction history (transparency) to run distributed applications. It is possible to do

Therefore, various distributed applications such as contracts, SNS, e-mail, and electronic voting exist.

Hereinafter, a blockchain-based opinion providing system proposed by the present invention will be described in detail with reference to the drawings based on the above-described configuration and technology.

4 is a view for explaining the structure of the poll smart contract in the blockchain-based poll proposed by the present invention, Figure 5 illustrates an example of a blockchain-based poll system proposed by the present invention.

In this specification, we propose a blockchain-based opinion polling technique and a voting verification technique that can guarantee reliability.

The proposed technique provides basic polling functions such as creating polls, managing targets, voting in a blockchain-based Ethereum platform environment, and also verifies poll results through individuals or certification bodies. .

To this end, a process of designing an Ethereum smart contract required for a proposed poll and performing a poll using the same will be described with reference to FIGS. 4 and 5.

The technique proposed in the present invention uses the Ethereum smart contract to perform a poll using the blockchain-based Ethereum platform.

In addition, the proposed voting verification technique proposes a robust voting verification technique that can verify poll results from individuals or certification authorities.

Polling agencies can use the proposed technique to reliably manage polling information and poll results and derive polling results that guarantee reliability through voting verification.

The purpose of this paper is to describe the types and structures of smart contracts called Ethereum's crypto box in order to propose a polling and verification technique in the Ethereum environment, a blockchain platform.

Polling organizations or subjects are provided with a polling service environment as shown in FIG. 4 by using each smart contract that can obtain a result value only under specific conditions.

Referring to FIG. 4, the PollFactory contract provides the ability to generate polls and manage the generated polls.

The poll created through the PollFactory contract is created as a smart contract named EthPoll to store the item information and poll subject information.

In addition, the EthPoll contract stores the votes of the subjects in the poll in the EthVote contract.

Here, EthVote contracts are created together, one per EthPoll contract, and store encrypted voting results to protect the voting results of the participants.

In addition, the information of the subjects who receive the polls and conduct the actual voting is managed by the EthVoterStore contract, which is the subject management contract for one poll.

The OrganizationStore contract also manages the certification body's information and is used to request verification of all polls in closed polls.

Referring to FIG. 5, first, a request is made from the requesting institution 300 to the server 200, and the server 200 prepares an investigation.

Then, the data from the users are collected through the plurality of terminals 100, which are collected and analyzed in a blockchain-based poll providing environment.

Thereafter, when the result is aggregated through data processing, the server 200 provides the result to the requesting institution 300.

According to the present invention, it may include a process of confirming whether each user of the terminal 100 who performed a poll, such as voting, is properly reflected in his or her opinion.

Furthermore, the polling verification agency 400 may separately perform data collection and analysis performed by the server 200 to proceed with the verification process to confirm whether the result obtained through the server 200 is correct.

This may be performed based on the above-described blockchain-based polling scheme.

In the following description, the system proposed by the present invention is divided into a first process of generating, managing, and conducting a poll and a second process of verifying a poll result.

First, referring to FIGS. 6 and 7, a process of generating, managing, and performing a poll by the system 10 proposed by the present invention will be described.

FIG. 6 illustrates a process of generating, managing, and performing a survey by the blockchain-based poll system described in FIG. 5, and FIG. 7 is an example of an activity diagram illustrating the poll generation process described in FIG. 6 in more detail. to be.

Referring to FIG. 6 (a), the poll requesting agency 300 requests a poll to the server 200, and distributes the poll distributed application provided by the server 200 as shown in FIG. Prepare a list for the users of the terminal 100 through.

Thereafter, as shown in FIG. 6C, the server 200 distributes and stores the roster information of users in the Ethereum distributed network, and performs authentication for the polled subjects as shown in FIG. 6D. do.

Thereafter, as shown in (e) of FIG. 6, when the users of the terminal 100 fill out the survey contents and transmit the survey contents to the server 200, the server 200 encrypts the result as shown in FIG. 6 (f). As shown in (g) of FIG. 6, the encrypted result information is transmitted to the Ethereum distributed network.

Subsequently, as shown in FIGS. 6H and 6I, after the result is decoded in the server 200, a poll or the like is processed according to the contents, thereby obtaining a poll result.

The polling agency sends the request to the polling service, including the information needed to generate the poll.

The poll service receiving the creation request creates a new poll by the administrator of the service.

FIG. 7 illustrates a process in which a polling agency generates one poll. Referring to FIG. 7, a poll is started by a start time of a designated poll or a request for a polling institution to be started after a poll is generated. do.

When the poll begins, poll participants access the poll webpage and vote on each question to create a poll.

Each vote in the polls completed is encrypted using the private key for the subject's account.

The encrypted original ballot is stored in the EthVote contract and the ballot decrypted with the subject's account information is updated with the vote for the item in the EthPoll contract.

Next, referring to FIGS. 8 and 9, a process of verifying the polling result by the system 10 proposed by the present invention will be described.

FIG. 8 illustrates a process of verifying the poll result by the blockchain-based poll system described in FIG. 5, and FIG. 9 illustrates an example of an activity diagram that describes the poll verification process described in FIG. 8 in more detail.

The verification method for such a poll is the verification of the poll by the certification body and the verification of the individual vote of the poll target.

The verification of the poll by the certification body is a method of decrypting and verifying all encrypted original voting information of the EthVote contract after the poll is finished.

8 and 9, the process of verifying an existing poll by a separate poll verification institution 400 decrypts and verifies all encrypted original voting information of the EthVote contract after the poll is finished. do.

In addition, a process of verifying a poll target person, which is a user of the terminal 100 in response to a poll, is also illustrated as necessary.

That is, the user of each terminal 100 can verify the result of the existing poll by confirming the data used for the vote or the content of the stored data (decoding).

In this specification, we propose a blockchain-based poll providing technique that can guarantee reliability.

The technique proposed in this specification increases the reliability of verification by storing encrypted vote data of poll subjects in the blockchain and enabling decryption and re-validation only during poll verification.

In addition, the polling method proposed in this specification and the robust voting verification method are designed as Ethereum smart contracts to be used in the Ethereum distributed application, and the operation process thereof is also described.

The poll providing technique proposed in this specification can be used as a solution to increase efficiency and reliability for polls in that the result can be verified very simply while safely storing the result using a blockchain. .

In addition, in relation to the system proposed by the present invention, the encryption and decryption process of poll poll data will be described in more detail.

FIG. 10 is a view for explaining a process of encrypting and decrypting poll poll data in the system proposed by the present invention, FIG. 11A is a diagram illustrating a conventional public / private key encryption method, and FIG. 11B is an embodiment of the present invention. A diagram for explaining the encryption and decryption process of the proposed voting data.

The dotted red box portion of the system configuration shown in FIG. 10 shows the encryption and decryption process of the poll poll data.

In the conventional encryption process, when the subject encrypts the voting data and passes it to the Ethereum distributed network, the Ethereum distributed network receives the decrypted data and decrypts it to verify the result. However, in the present system, more detailed and advanced encryption is applied. And a decoding method.

Referring to FIG. 11A, the encryption and decryption method uses a general encryption / decryption method using a public / private key pair.

As shown in FIG. 11A, one account (user) has a public key and a private key, the public key is disclosed to the system, and the private key is owned by the user.

Here, the public key is a key that can be closely matched with the secret key, and these keys have the following characteristics in encryption and decryption.

In other words, the data encrypted with the public key can be solved only with the same pair of secret keys, so if the data is encrypted using the public key of a specific target known to the system, the encrypted data can be decrypted only with the private key of the target. Only the target can decrypt and check the contents.

In the present invention, an additional encryption / decryption process is applied based on this encryption method.

First, a target and a verification authority are used to decrypt and use the voting data encrypted by the target. The manager is a representative account in charge of the polling system and decrypts the encrypted voting data of the target to perform the vote processing.

In addition, the Verification Body decrypts the voting data to perform the verification process for the polls.

In addition, a process as shown in FIG. 11B is applied to apply the public key / secret key encryption method to these two objects.

Referring to FIG. 11B, administrator and verification authority accounts generate and hold a private key and a public key.

Among them, the public key is distributed to the Ethereum distributed network and made public. After that, when the subject encrypts the voting data, the public key is encrypted using the public key of the manager and the verification authority.

In this way, the voting data encrypted using each public key is stored in the Ethereum distributed network. Then, the administrator decrypts the voting data encrypted with his public key using his private key and processes the vote according to the contents. .

In addition, the verification institution verifies the contents by decrypting the voting data encrypted with its public key with its private key when performing verification.

Through this method, the system can encrypt the data so that only certain objects can be verified.

Meanwhile, the above-described embodiments of the present invention may be implemented through various means. For example, embodiments of the present invention may be implemented by hardware, firmware, software, or a combination thereof.

For implementation in hardware, a method according to embodiments of the present invention may include one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), and Programmable Logic Devices (PLDs). It may be implemented by field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, and the like.

In the case of an implementation by firmware or software, the method according to the embodiments of the present invention may be implemented in the form of a module, a procedure, or a function that performs the functions or operations described above. The software code may be stored in a memory unit and driven by a processor. The memory unit may be located inside or outside the processor, and may exchange data with the processor by various known means.

The detailed description of the preferred embodiments of the invention disclosed as described above is provided to enable those skilled in the art to implement and practice the invention. Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will understand that various modifications and changes can be made without departing from the scope of the present invention. For example, those skilled in the art can use each of the configurations described in the above-described embodiments in combination with each other. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The invention can be embodied in other specific forms without departing from the spirit and essential features of the invention. Accordingly, the above detailed description should not be interpreted as limiting in all aspects and should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, the claims may be combined to form an embodiment by combining claims that do not have an explicit citation relationship or may be incorporated as new claims by post-application correction.

Claims (10)

A first step of collecting, by a blockchain-based distributed network comprising a plurality of servers, first information about at least one user to be investigated;
A second step of the distributed network distributing and storing the first information;
A third step of the distributed network transmitting second information related to a survey to a terminal of a first user authenticated through first information stored in the distributed network among a plurality of users;
A fourth step in which the third information determined corresponding to the second information is encrypted in the terminal, and the encrypted third information is transmitted to the distributed network;
A fifth step of the distributed network decrypting the encrypted third information to extract the third information;
A sixth step of the distributed network determining a result of the survey using the extracted third information;
Step 7-1 of the distributed network receiving a verification request from a verification authority;
A step 7-2 of the distributed network to decrypt the encrypted third information to extract the third information, and to determine a re-result for the survey using the extracted third information;
Step 7-3, wherein the verification authority compares the result of the survey performed by the distributed network with the result of the re-test;
An eighth step of receiving, by the authenticated first user's terminal, the encrypted third information from the distributed network;
An eighth step of extracting the third information by decrypting the encrypted third information at a terminal of the authenticated first user; And
A step 8-3 of checking, by the terminal of the authenticated first user, whether or not the information previously input by the first user is identical to the third information;

The survey is a poll,
The second information is information representing a plurality of candidates,
And wherein the third information is a candidate representing at least one candidate from among the plurality of candidates.
delete delete delete The method of claim 1,
The blockchain-based distributed network is a blockchain-based research method, characterized in that the Ethereum (Ethereum) platform. A blockchain-based distributed network including a plurality of servers collecting first information about at least one user to be investigated; And
And a terminal of a first user authenticated through first information stored in the distributed network among a plurality of users.
The distributed network,
Distribute and store the first information,
Transmitting second information related to the survey to a terminal of the first user,
When the third information determined corresponding to the second information is encrypted in the terminal, and the encrypted third information is transmitted to the distributed network,
The distributed network,
Extracting the third information by decrypting the encrypted third information;
Determining the result of the survey by using the extracted third information,
If the distributed network receives a verification request from a verification authority,
The distributed network,
Extracting the third information by decrypting the encrypted third information, and determining a re-result for the survey using the extracted third information;
Verify the result of the survey performed by the distributed network by comparing the re-result with,
The authenticated first user terminal,
Receive the encrypted third information from the distributed network,
Extracting the third information by decrypting the encrypted third information;
Verifying and verifying whether the information input by the first user in the past and the third information match each other;

The survey is a poll,
The second information is information representing a plurality of candidates,
And wherein the third information is a candidate indicating to support at least one candidate of the plurality of candidates.
delete delete delete The method of claim 6,
The blockchain-based distributed network is a blockchain-based research system, characterized in that the Ethereum (Ethereum) platform.

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