KR20210039190A - Method for maintaining private information on blockchain network and device thereof - Google Patents

Abstract

According to one embodiment of the present invention, a method of storing and managing personal information in a block chain network by a plurality of users in order to receive a service from at least one service provider includes: receiving, by a manager of the block chain network, the personal information including personal identification information, which is information for identifying an individual from the users, and additional information, which is additional information on the individual; generating, by the manager, a unique identifier for each of the users by using the personal identification information; adding, by the manager, a block including the identifier and the personal identification information to a main channel of the block chain network including the at least one service provider and the manager; and adding, by the manager, a block including the identifier and the additional information to a subchannel of the block chain network including the manager. Accordingly, high security and reliability of personal information are ensured.

Description

Personal information management method using blockchain and blockchain network manager to which the method is applied {METHOD FOR MAINTAINING PRIVATE INFORMATION ON BLOCKCHAIN NETWORK AND DEVICE THEREOF}

The present invention relates to a method of managing personal information using a block chain and a block chain network manager to which the method is applied.

In order to receive a service using the Internet, a user must register with a service company in the form of membership registration to receive the service. To this end, the user provides his/her personal information to the service company. In this process, individuals can be authenticated and information can be provided through mobile phone authentication, i-PIN, and public certificates. However, personal information is managed individually for each service company, and it is not managed in an integrated manner.

In addition, since personal information is stored and managed by each company, various security equipment such as intrusion detection system, firewall, and access control system must be independently operated to protect personal information. However, it is practically difficult to prevent personal information leakage from all attacks due to the advancement of attack technology by malicious users, and internal leakage of personal information is also continuously occurring. Furthermore, since it is difficult to confirm in real time that such a damage situation occurs, secondary damage such as voice phishing and identity theft due to personal information leakage is occurring.

Accordingly, there is a need for a personal information management method capable of not only managing users' personal information used by various service companies in an integrated manner, but also securing high security and reliability.

Korean Registered Patent Publication No. 10-1893729 (2018.8.24)

The present invention aims to provide a method of distributing and managing personal information that secures high security and reliability for personal information by integrated management of user's personal information using a block chain.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the personal information management method using the block chain provided by the present invention is a method in which a plurality of users store and manage personal information in a block chain network in order to receive services from at least one service provider. And receiving, by an administrator of the blockchain network, personal information from each of the plurality of users, including personal identification information, which is information for identifying an individual, and additional information, which is additional information about the individual; Generating, by the administrator, a unique identifier for each of the plurality of users by using the personal identification information; Adding, by the administrator, a block including the identifier and the personal identification information to a main channel of the blockchain network including the at least one service provider and the administrator; And adding, by the manager, a block including the identifier and the additional information to a subchannel of the blockchain network including the manager.

Preferably, after the step of generating the unique identifier, the administrator may further include transmitting the generated identifier to each of the plurality of users.

Preferably, after the step of transmitting the generated identifier, the administrator receives an information inquiry request including inquiry information, which is information on the identifier and the inquiry object, from a first user, one of the plurality of users. step; Transmitting, by the administrator, a user authentication request requesting predetermined authentication information to the first user; Receiving, by the administrator, the authentication information from the first user; The manager obtains result information corresponding to the inquiry information from the main channel or the sub-channel by operating the inquiry chain code, which is a chain code that performs inquiry of the block containing the identifier upon receipt of the authentication information. The step of doing; And transmitting, by the administrator, the result information to the first user.

Preferably, after the step of transmitting the generated identifier, the administrator receives an information change request including the identifier and, optionally, correction information, which is information on a correction target, from a first user who is one of the plurality of users. Receiving; Transmitting, by the administrator, a user authentication request requesting predetermined authentication information to the first user; Receiving, by the administrator, the authentication information from the first user; When the manager receives the authentication information, a change chain code, which is a chain code that changes the block including the identifier, is operated, so that the identifier from the main channel or the sub-channel according to whether the correction information is included. Modifying or deleting personal information corresponding to; And transmitting, by the administrator, change information, which is information about a result of the correction or deletion, to the first user.

Preferably, when a target service provider, which is one of the at least one service provider, receives a service request from a second user, which is one of the plurality of users, the administrator corresponds to the second user from the target service provider. Receiving an information inquiry request including inquiry information, which is information about an identifier and an inquiry object; Transmitting, by the administrator, a user authentication request requesting predetermined authentication information to the second user; Receiving, by the administrator, the authentication information from the second user; When the administrator receives the authentication information, the inquiry chain code, which is a chain code corresponding to the inquiry stored in the block containing the identifier, operates, so that result information corresponding to the inquiry information is received from the main channel or the sub-channel. Obtaining; And transmitting, by the administrator, the result information to the target service provider.

Preferably, after the operation of the chaincode, the administrator may further include recording a log corresponding to the operation of the chaincode.

In addition, in order to achieve the above object, a blockchain network administrator that stores and manages personal information provided by the present invention is a block chain in which a plurality of users store and manage personal information in order to receive services from at least one service provider. A network manager, comprising: a communication unit for receiving personal information including personal identification information, which is information for identifying an individual from each of the plurality of users, and additional information that is additional information about the individual; An identifier generator for generating a unique identifier for each of the plurality of users by using the personal identification information; And adding a block including the identifier and the personal identification information to the main channel of the blockchain network including the at least one service provider and the manager, and adding a block including the identifier and the additional information to the manager. It includes; a block chain connection unit added to the sub-channel of the block chain network including.

Preferably, when a target service provider that is one of the at least one service provider receives a service request from a second user who is one of the plurality of users, the communication unit corresponds to the second user from the target service provider. Receiving an information inquiry request including inquiry information, which is information about an identifier and an inquiry object, transmitting a user authentication request requesting predetermined authentication information to the second user, receiving the authentication information from the second user, and , The block chain connection unit operates a chain code that corresponds to a query stored in the block containing the identifier upon receipt of the authentication information, and thus a result corresponding to the inquiry information from the main channel or the sub-channel. After obtaining the information, the communication unit may transmit the result information to the target service provider.

Preferably, after the operation of the inquiry chain code, it may further include a log recording unit for recording a log corresponding to the operation of the inquiry chain code.

In the present invention, the need for individual personal information storage and management of the service provider disappears as the administrator integrates and manages user information using a block chain. That is, since the service provider does not store personal information, leakage of personal information can be prevented. In addition, since the administrator is in charge of managing the user's personal information, the service provider can reduce the related system operation cost.

In addition, in the present invention, a user and a service provider cannot directly access personal information stored in stages, and in the case of a service provider, since it is impossible to request an inquiry without a user's request, high security compared to existing personal information management is secured. In addition, when personal information is inquired or changed through the manager, the reliability of the manager can be secured by storing the details in the network.

In addition, the personal information stored in the present invention can be expanded according to the needs of the user. Users can store information other than personal information required by multiple service providers in the blockchain. That is, since a user can transmit information to a plurality of service providers by storing information once, convenience can be increased.

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

1 is a flowchart illustrating a method of managing personal information using a block chain according to an embodiment of the present invention.
2 is a flowchart illustrating a method of inquiring personal information of a user according to an embodiment of the present invention.
3 is a flowchart illustrating a method of changing personal information of a user according to an embodiment of the present invention.
4 is a flowchart illustrating a method of inquiring personal information of a service provider according to an embodiment of the present invention.
5 is a block diagram showing a block chain network manager storing and managing personal information according to an embodiment of the present invention.
7 and 8 are diagrams illustrating a structure of a main channel and a subchannel block according to an embodiment of the present invention.

In the present invention, various modifications may be made and various embodiments may be provided, and specific embodiments will be described in detail with reference to the drawings. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals have been used for similar elements.

Terms such as first, second, A, and B may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term and/or includes a combination of a plurality of related items or any of a plurality of related items.

When a component is referred to as being "connected" or "connected" to another component, it should be understood that it is directly connected to or may be connected to the other component, but other components may exist in the middle. something to do. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present application. Does not.

Throughout the specification and claims, when a certain part includes a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

Blockchain was first implemented in "Bitcoin: A Peer-to-Peer Electronic Cash System", a paper submitted by Satoshi Nakamoto. Blockchain is a distributed, independent and open common ledger management technology. All users participating in the blockchain own the contents of a common ledger, and only blocks recognized by more than half of the participants are connected to the blockchain. Initially, blockchain was used as a base technology for cryptocurrency, but recently it has proposed a business model that replaces the existing system. This is because existing services or new services can be built at low cost through blockchain. Also, it is widely applied to log-based services by maintaining integrity through a shared ledger.

In the present invention, a user, an administrator, and a service provider may mean a smartphone, a notebook computer, a desktop computer, a tablet PC, or other computing devices used by the user, the administrator, and the service provider.

Meanwhile, with reference to FIG. 6, the user, administrator, and service provider of the present invention will be described.

The administrator can play the role of a trusted institution in the present invention. In other words, it can register and manage basic personal information and additional information of all service providers and users in the blockchain. In addition, when personal information of a user is required to service providers, it can be provided. In addition, the administrator can manage the certificates and private/public keys of nodes belonging to the blockchain network. The administrator provides a service module to create, modify, and view personal information, and users can manage personal information through distributed apps. The service provider is included in the same blockchain network as the administrator and can exchange information through the request/service module.

Service providers can generally play a role of providing various services to users using the Internet. The service provider may request the personal information of the user necessary from the administrator and receive it and provide the service to the user. In order for a service provider to request user's personal information, it may need to be authenticated by an administrator in advance. The service provider cannot access the user's personal information alone, and can only access the personal information at the request of the user.

Users can provide administrators with their personal information to be stored in the blockchain, and their personal information can be protected. The user has an identifier given by the administrator, and this identifier can be used for functions such as viewing, modifying, and deleting personal information. In general, data on the blockchain cannot be deleted.However, if deletion is inevitable due to the death or immigration of the user, for example, the data corresponding to the user's identifier can be changed to blank to perform functions such as deletion. have. When requesting to view personal information from a service provider, the administrator can confirm the user's consent and deliver the personal information to the desired specific service provider.

1 is a flowchart illustrating a method of managing personal information using a block chain according to an embodiment of the present invention.

In step S110, the administrator of the blockchain network receives personal information from each of the plurality of users, including personal identification information, which is information for identifying an individual, and additional information, which is additional information about the individual.

Here, the plurality of users may be users of services provided by at least one service provider. In addition, services provided by service providers may be various types of services provided through the Internet. For example, games, shopping, music, movies, and video streaming may be applicable.

Personal identification information may be information used to identify an individual. For example, it may be a user ID, name, contact information, or the like. In addition, the additional information may be personal information of various users in addition to personal identification information. For example, it may be a resident registration number, address, password, or the like.

Preferably, the additional information may be information that is more sensitive to security than personal identification information. This may be because, as described below, for security reasons in the present invention, the blockchain network is divided into a main channel and a sub channel and managed separately.

In step S120, the administrator generates a unique identifier for each of the plurality of users by using the personal identification information.

In this case, the identifier may mean a unique constant value generated based on personal identification information. For example, assuming that ID, name, and contact information are included in the personal identification information, since no user with the same ID, name, and contact information will all exist, the administrator can create different identifiers for multiple users. do.

In step S130, the administrator adds a block including the identifier and personal identification information to the main channel of the blockchain network including at least one service provider and the administrator.

Here, referring to FIG. 7, a block of the main channel may be composed of a block header, transaction information, consensus information, and a data part, and in the header part of the block, the block number, the hash value of the previous block, and the hash value of the current block Can be saved. In the transaction information part, information related to the chaincode used when executing a transaction can be stored. In the consensus information part, certificates, public keys, and electronic signatures of nodes agreed upon at the time of transaction submission may be stored. The main channel is a channel where all nodes of the blockchain network participate, and can store identifiers and personal identification information (e.g., name, contact information, ID, etc.) in the data part. The identifier is stored to identify the user within the network, and personal identification information can be used together with the identifier to prove that the user is an authenticated user.

Finally, in step S140, the administrator adds the block including the identifier and additional information to the subchannel of the blockchain network including the administrator.

Here, referring to FIG. 8, a header, transaction information, and consensus information portion of a block of a subchannel may be the same as a configuration of a main channel block. In the data part of the subchannel block, personal information such as an identifier that can identify which user's information and additional information (eg, a social security number, an address, and a password that certifies that the user is an authenticated user) can be stored. A block of another subchannel opened for storing additional information later has the same configuration, and only the data part of the block may be changed according to the characteristics of the stored additional information.

In another embodiment, the administrator may transmit the generated identifier to each of the plurality of users.

In this case, the plurality of users may use the transmitted identifiers for inquiring, deleting, or modifying personal information. Details regarding this will be described in detail later in the description of FIGS. 2 to 4.

In another embodiment, an administrator may provide a service using a blockchain network including one main channel and a plurality of subchannels.

In this case, the main channel may be a channel in which a user, a manager, and a service provider participate, and a basic transaction for personal information distribution is performed. Information that can identify a user (identifier) is stored in the main channel, and users and service providers can request major personal information by using the identifier. In addition, the sub-channel is a channel including only the administrator, and may store additional information other than main personal information at the request of the user. The subchannel may share an identifier stored in the main channel to provide additional information of a user corresponding to the identifier. In addition, the sub-channel may be additionally opened according to the personal information of the user to be distributed.

In other words, the main channel stores the user's identifier and the sub channel stores actual personal information, so that personal information can be managed step by step. In other words, the main channel can be accessed by all members of the blockchain network, but only the administrator can access it because the user's direct personal information is stored in the sub-channel. By restricting access rights for each channel, intrusion and hacking from outside can be prevented. Therefore, users' sensitive personal information can only be viewed through an administrator. Later, when the administrator wants to store additional information according to the needs of the user, a new subchannel can be opened and stored. As such, distributing and storing the user's personal information using a plurality of sub-channels facilitates management and improves the overall security of the system.

2 is a flowchart illustrating a method of inquiring personal information of a user according to an embodiment of the present invention.

Meanwhile, the description of FIG. 2 below assumes that all the processes described with respect to FIG. 1 have been completed.

In step S210, the administrator receives an information inquiry request including an identifier and inquiry information, which is information on an inquiry object, from a first user, one of the plurality of users.

For example, the administrator may receive an information inquiry request including inquiry information for requesting an inquiry about an identifier and an ID from the first user.

In step S220, the administrator transmits a user authentication request requesting predetermined authentication information to the first user.

That is, the administrator may transmit a user authentication request to confirm that the first user is a party capable of inquiring information.

In step S230, the administrator receives authentication information from the first user.

For example, the administrator may receive authentication information such as an identifier, an ID, and a password from the first user in response to the user authentication request.

In step S240, the administrator obtains result information corresponding to the inquiry information from the main channel or the sub-channel by operating the inquiry chain code, which is a chain code that performs inquiry of a block containing an identifier according to the reception of the authentication information. .

Here, chaincode is a kind of digital automation contract in which the contract is executed without human intervention if conditions are met, and is also called a smart contract. For example, the inquiry chain code may be a code that executes a contract that performs an inquiry of a block containing an identifier, subject to the administrator receiving the authentication information.

That is, the manager can obtain result information corresponding to the inquiry information from the sub-channel due to the operation of the inquiry chain code. For example, when the inquiry information requests an inquiry about an address, information about the address may be obtained from a main channel or a subchannel.

Finally, in step S250, the administrator transmits the result information to the first user.

3 is a flowchart illustrating a method of changing personal information of a user according to an embodiment of the present invention.

Meanwhile, the description of FIG. 3 below assumes that all the processes described with respect to FIG. 1 have been completed.

In step S310, the administrator receives an information change request including an identifier and, optionally, correction information, which is information on a correction target, from a first user, one of the plurality of users.

That is, the administrator may receive an information change request including the identifier from the first user or may receive an information change request including the identifier and correction information.

At this time, if the information change request does not include the correction information, the administrator may determine that the request to delete the information corresponding to the identifier from the blockchain. In addition, when the information change request includes correction information, the administrator may determine that the block chain requests that the information corresponding to the identifier be corrected based on the correction information.

In step S320, the administrator transmits a user authentication request requesting predetermined authentication information to the first user.

In step S330, the administrator receives authentication information from the first user.

In step S340, the change chain code, which is a chain code for changing the block including the identifier, is operated by the administrator upon receipt of the authentication information, so that the identifier is changed from the main channel or the sub channel according to whether or not the correction information is included. Correct or delete the corresponding personal information.

At this time, the change chain code may be a code that executes a contract that performs a change of a block including an identifier, subject to the administrator receiving the authentication information.

More specifically, the change chain code modifies the block containing the identifier if the information change request contains correction information, and if the information change request does not contain correction information, the data of the block containing the identifier (e.g., Identifier, contact, ID, name, address, etc.) can be deleted.

Finally, in step S340, the administrator transmits change information, which is information about the result of the correction or deletion, to the first user.

4 is a flowchart illustrating a method of inquiring personal information of a service provider according to an embodiment of the present invention.

Meanwhile, the description of FIG. 4 below assumes that all the processes described with respect to FIG. 1 have been completed.

In addition, it is assumed that a target service provider, which is one of at least one service provider, receives a service request from a second user, which is one of a plurality of users.

In step S410, the administrator receives an information inquiry request including an identifier corresponding to the second user and inquiry information, which is information on the inquiry object, from the target service provider.

That is, the administrator may receive an information inquiry request including the identifier of the second user and inquiry information of the second user from the target service provider. At this time, the target service provider directly receives an identifier while receiving a service request from the second user, or by using personal identification information such as ID included in the service provision request of the second user, the identifier of the second user stored in the main channel. You can obtain information about.

In step S420, the administrator transmits a user authentication request requesting predetermined authentication information to the second user.

In this case, the user authentication is to check whether the request of the target service provider is due to the request of the second user, and may be performed in a form of obtaining consent for personal information inquiry.

In step S430, the administrator receives authentication information from the second user.

In step S440, the administrator obtains result information corresponding to the inquiry information from the main channel or the sub-channel by operating the inquiry chain code, which is a chain code corresponding to the inquiry stored in the block containing the identifier, upon receipt of the authentication information. do.

Finally, in step S450, the manager transmits the result information to the target service provider.

At this time, the target service provider can provide the service to the second user by receiving the result information from the administrator.

In another embodiment, after the operation of the chaincode, the administrator records a log corresponding to the operation of the chaincode.

For example, the administrator may store a log corresponding to the operation on the blockchain network or in a separate database each time the chaincode operates to perform an inquiry or change.

In this way, the administrator can secure the reliability of the administrator by recording and storing the log corresponding to the operation of the chaincode.

5 is a block diagram showing a block chain network manager storing and managing personal information according to an embodiment of the present invention.

5, a block chain network manager 500 for storing and managing personal information according to an embodiment of the present invention includes a communication unit 510, an identifier generator 520, and a block chain connection unit 530. . Optionally, a log recording unit (not shown) may be further included.

The communication unit 510 receives personal information including personal identification information, which is information for identifying an individual, and additional information, which is additional information about the individual, from each of the plurality of users.

The identifier generator 520 generates a unique identifier for each of the plurality of users by using personal identification information.

Blockchain connection unit 530 adds the block including the identifier and personal identification information to the main channel of the blockchain network including at least one service provider and manager, and adds the block including the identifier and additional information to the manager. It is added to the subchannel of the containing blockchain network.

Finally, the log recording unit (not shown) records a log corresponding to the operation of the inquiry chain code after the operation of the inquiry chain code.

In another embodiment, when a target service provider, which is one of at least one service provider, receives a service request from a second user, which is one of the plurality of users, the communication unit 510 corresponds to the second user from the target service provider. It is possible to receive an information inquiry request including an identifier and inquiry information, which is information about an inquiry object, transmit a user authentication request requesting predetermined authentication information to a second user, and receive authentication information from the second user.

At this time, the block chain connection unit 530 operates the inquiry chain code, which is a chain code corresponding to the inquiry stored in the block containing the identifier, upon receipt of the authentication information, so that result information corresponding to the inquiry information from the main channel or sub-channel Can be obtained.

In addition, the communication unit 510 may transmit the result information to the target service provider.

The above description is merely illustrative of the technical idea of the present invention, and a person of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Claims (9)

In a method for managing personal information by storing personal information in a blockchain network by a plurality of users in order to receive a service from at least one service provider,
Receiving, by an administrator of the blockchain network, personal information from each of the plurality of users, including personal identification information, which is information for identifying an individual, and additional information, which is additional information about the individual;
Generating, by the administrator, a unique identifier for each of the plurality of users by using the personal identification information;
Adding, by the administrator, a block including the identifier and the personal identification information to a main channel of the blockchain network including the at least one service provider and the administrator; And
Adding, by the manager, a block including the identifier and the additional information to a subchannel of the blockchain network including the manager
Personal information management method using a block chain comprising a. The method of claim 1,
After the step of generating the unique identifier,
Transmitting, by the administrator, the generated identifier to each of the plurality of users
Personal information management method using a block chain, characterized in that it further comprises. The method of claim 2,
After the step of transmitting the generated identifier,
Receiving, by the administrator, an information inquiry request including inquiry information, which is information on the identifier and the inquiry object, from a first user, one of the plurality of users;
Transmitting, by the administrator, a user authentication request requesting predetermined authentication information to the first user;
Receiving, by the administrator, the authentication information from the first user;
The manager obtains result information corresponding to the inquiry information from the main channel or the sub-channel by operating the inquiry chain code, which is a chain code that performs inquiry of the block containing the identifier upon receipt of the authentication information. The step of doing; And
Transmitting, by the administrator, the result information to the first user
Personal information management method using a block chain, characterized in that it further comprises. The method of claim 2,
After the step of transmitting the generated identifier,
Receiving, by the administrator, an information change request from a first user, one of the plurality of users, including the identifier and, optionally, correction information, which is information on a correction target;
Transmitting, by the administrator, a user authentication request requesting predetermined authentication information to the first user;
Receiving, by the administrator, the authentication information from the first user;
When the administrator receives the authentication information, a change chain code, which is a chain code that changes the block including the identifier, operates, so that the identifier from the main channel or the sub-channel according to whether the correction information is included. Modifying or deleting personal information corresponding to; And
Transmitting, by the administrator, change information, which is information on the result of the correction or deletion, to the first user
Personal information management method using a block chain, characterized in that it further comprises. The method of claim 1,
When a target service provider, which is one of the at least one service provider, receives a service request from a second user, which is one of the plurality of users,
Receiving, by the administrator from the target service provider, an information inquiry request including an identifier corresponding to the second user and inquiry information, which is information on an inquiry object;
Transmitting, by the administrator, a user authentication request requesting predetermined authentication information to the second user;
Receiving, by the administrator, the authentication information from the second user;
When the administrator receives the authentication information, the inquiry chain code, which is a chain code corresponding to the inquiry stored in the block containing the identifier, operates, so that result information corresponding to the inquiry information is received from the main channel or the sub-channel. Obtaining; And
Transmitting, by the administrator, the result information to the target service provider
Personal information management method using a block chain, characterized in that it further comprises. The method according to claim 3 to 5,
After the operation of the chaincode, the administrator recording a log corresponding to the operation of the chaincode
Personal information management method using a block chain, characterized in that it further comprises. In the administrator of a blockchain network in which a plurality of users store and manage personal information to receive services from at least one service provider,
A communication unit for receiving personal information including personal identification information, which is information for identifying an individual from each of the plurality of users, and additional information, which is additional information about the individual;
An identifier generator for generating a unique identifier for each of the plurality of users by using the personal identification information; And
A block including the identifier and the personal identification information is added to the main channel of the blockchain network including the at least one service provider and the manager, and a block including the identifier and the additional information includes the manager. A block chain connection unit to be added to a sub-channel of the block chain network;
Blockchain network administrator for storing and managing personal information comprising a. The method of claim 7,
When a target service provider, which is one of the at least one service provider, receives a service request from a second user, which is one of the plurality of users,
The communication unit receives an information inquiry request including an identifier corresponding to the second user and inquiry information, which is information on the inquiry object, from the target service provider, and a user authentication request for requesting predetermined authentication information from the second user. And receiving the authentication information from the second user,
The block chain connection unit operates the inquiry chain code, which is a chain code corresponding to the inquiry stored in the block containing the identifier, upon receipt of the authentication information, so that result information corresponding to the inquiry information from the main channel or the sub-channel To obtain,
Blockchain network manager for storing and managing personal information, characterized in that the communication unit transmits the result information to the target service provider. The method of claim 8,
Log recording unit for recording a log corresponding to the operation of the inquiry chain code after the operation of the inquiry chain code
Blockchain network manager for storing and managing personal information, characterized in that it further comprises

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