KR102050154B1 - System and method for supply chain network using block chain - Google Patents

Abstract

The present invention relates to a blockchain system in which a plurality of unit nodes are connected to at least one of wired and wireless communication networks, and mutually verifying the integrity of data within the unit nodes among the plurality of nodes. One user terminal is connected, and the unit node is directly or indirectly connected to at least one of the wired and wireless communication networks based on a block chain in which individual blocks including a business ledger created by the user terminal are linked in a chain form. A unique public key and a private key are generated and provided, and each of the plurality of unit nodes has its own unique public key list, and its own private key is assigned to a node corresponding to a specific public key selected from the unique public key list. Block chain that synchronizes data by sending the combined data to the other unit nodes. The system.

Description

Supply chain network system and method using blockchain {SYSTEM AND METHOD FOR SUPPLY CHAIN NETWORK USING BLOCK CHAIN}

The present invention relates to a supply chain network system and method, and more particularly to a structure and method of a system for performing a supply chain network system using block chain technology.

Block chain, also known as public trading ledger, is a technology that prevents hacking that can 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 to prevent data forgery. Blockchain is applied to Bitcoin, a representative online virtual currency. Bitcoin transparently records transaction details in a book that anyone can read, and several computers using Bitcoin verify this record every 10 minutes to prevent hacking.

Bitcoin is designed to work in a fully distributed fashion in a pear to pear (P2P) manner without a server controlling the system. In addition, the system allows anyone to use the system without having to register a user who can use money. Since there is no server to register, each user uses the public key as a kind of one-time account number. For example, if user A signs a message with a private key that only he knows, a third party uses the public key to sign the signature with the private key that corresponds to the pair of public keys. Can be authenticated.

Recently, as the interest in blockchain security technology increases, blockchain technology has been applied to various fields such as financial transactions, medical data management, and file management as well as virtual currency.

The blockchain method has the advantage of excellent security because all nodes share the same information so that the malicious node must modify the contents of the blockchain owned by all nodes in order to modify the contents arbitrarily.

However, since the blockchain method shares all the data in the user terminal, when the 50% or more users collide to perform the operation, there may be a problem of recognizing the manipulated data in all the user terminals.

Korea Patent Registration No. 10-1763827 Blockchain based medical data transmission system, method and program (Life Semantics Co., Ltd.) 2017.07.26

The present invention is to form a supply chain network using a blockchain system, and to efficiently use the computing power and storage space of the user terminal.

In a block chain system, a plurality of unit nodes are connected to at least one of wired and wireless communication networks for achieving the above object, and mutually verifying the integrity of data among the plurality of nodes in the unit node. At least one user terminal is connected to a unit node, and the unit node is directly or indirectly connected to at least one of the wired and wireless communication networks, and blocks individual chains including a business book created by the user terminal in a chain form. A unique public key and a private key are generated and provided based on a chain, and each of the plurality of unit nodes has its own unique public key list, and has its own for a node corresponding to a specific public key selected from the unique public key list Synchronize the data by transmitting the combined data of the private key to the other unit node. Can.

According to an embodiment of the present disclosure, the unit node may be a blockchain controller that checks whether the business book created from the user terminal is valid and stores the valid business book.

In this case, the blockchain controller may be implemented as a network device to perform a hash value check.

According to an embodiment, the user terminal may be directly connected to the unit node regardless of the authority level.

According to an embodiment, the communication network may include a blockchain cloud, the wired communication network may include the Internet, and the wireless communication network may include at least one of a mobile communication network and a low power wide area network (LPWAN).

The blockchain operating method performed by a unit node to which at least one user terminal is connected may include receiving an updated business book from the user terminal, examining the validity of the user terminal, and confirming that the user terminal is valid. The method may include generating and storing a block and synchronizing with other unit nodes constituting the block chain.

According to the present invention, since all members have easy access to the work books, the transparency of the work books can be increased.

According to the present invention, one server located at the head office is not responsible for all security, and the burden can be reduced because the operation is shared with the servers of the branch office.

According to the present invention, both a user and a service provider can make a healthy business platform through blockchain communication.

1 is a diagram illustrating a concept of a supply chain network system using a blockchain to which the present invention is applied.
2 is a view for explaining the operation of the unit node connected to the user terminal in the blockchain system according to the present invention.
3 is a flowchart illustrating a supply chain network method performed by a node of a block chain system according to an exemplary embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It is to be understood that the various embodiments of the invention are different, but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the following detailed description is not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used in a sense that can be commonly understood by those skilled in the art. In addition, terms that are defined in a commonly used dictionary are not ideally or excessively interpreted unless they are specifically defined clearly.

The present invention does not form a blockchain between user terminals, but the network devices form a block chain as a blockchain controller and efficiently perform energy consumption of the user terminal by performing a task to be performed in the user terminal through the blockchain controller. A supply chain network system and method using blockchain that can be reduced are disclosed.

In the general blockchain system, since users have all the data, if more than 50% of the users collide and manipulate the data, it becomes a problem because all the users recognize the manipulated data. For example, the conventional blockchain is vulnerable to attack because there is no controller or a central control system, and if it occupies more than half, there is a problem that the entire contents can be modified.

Therefore, in the present invention, a plurality of blockchain controllers form a blockchain network, and the user terminal can secure stronger security by authenticating using the blockchain controller. In the present invention, rather than forming a block chain between user terminals as in the prior art, the network equipment is configured as a block chain, which will be referred to as a block chain controller.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

1 is a diagram illustrating a concept of a supply chain network system using a blockchain to which the present invention is applied.

Referring to FIG. 1, a supply chain network system using a block chain according to an embodiment of the present invention may include unit nodes (N; 120, 121, etc.) connected to a block chain network.

As illustrated, the plurality of unit nodes (N, 120, 121, etc.) may be interconnected to at least one of the Internet, a mobile communication network, and a low power wide area network (LPWAN) including a blockchain network.

The total number of unit nodes (hereinafter, “mixed with“ node ”or“ unit node ”) is shown as a certain number for convenience of description, but the number is numerous and there is no particular limitation.

Although each unit node (N, 120, 121, etc.) differs in the size and connection method of each component involved, it basically includes a block chain and uses a unique public key and a private key based on an existing block chain for the connected node. Can be created and provided.

More specifically, in the present invention, a plurality of unit nodes (N, 120, 121, etc.) are connected to at least one of wired and wireless communication networks, and the plurality of unit nodes (N, 120,121, etc.) are connected to the plurality of unit nodes. A block chain system for mutually verifying authentication between nodes N (120, 121, etc.), wherein the unit nodes (N, 120, 121, etc.) are directly or indirectly connected to at least one of wired and wireless communication networks to include a business book. A unique public key and a private key can be generated and provided based on a block chain in which individual blocks are linked in a chain form.

According to an embodiment, the unit nodes (N, 120, 121, etc.) may operate as a blockchain controller. Here, the blockchain controller means that the network ends are connected to the blockchain to act as a controller. Conventional blockchain system is vulnerable to attack because there is no controller or central control system, but if you take the concept of blockchain controller and let the network equipment act as a controller, users can easily access the blockchain controller through the user terminal. In addition, the controller handles the authorization or decision algorithm directly, increasing security and keeping data stable.

In addition, the conventional blockchain has all duplicates in the user terminal, so there is a lot of duplicate data, but under the blockchain controller concept, the controller has all the data, and the user may not have the information about the blockchain. have. At this time, the controllers make a P2P connection, so that the blockchain service can be synchronized with each other.

According to an embodiment, in a supply chain network system using a blockchain, real-time communication between blockchain controllers may be possible. That is, each blockchain controller has information on the user terminal connected to it, and knows the other blockchain controllers forming the blockchain network, and mutual authentication is also possible. For example, when starting communication with each other, the user terminal and the blockchain controller exchange hash values with each other so that the blockchain controller can examine the validity of the user terminal through the hash value.

The supply chain network system using the blockchain according to an embodiment may further include user terminals 110, 111, 112, etc. connected to the unit nodes N (120, 121, etc.).

A user terminal according to various embodiments of the present disclosure may be, for example, a smartphone, a tablet personal computer, a mobile phone, a video phone, an e-book reader, and a desktop. Desktop personal computer (PC), laptop personal computer (PC), netbook computer, workstation, server, personal digital assistant (PDA), portable multimedia player (PMP), MP3 player, mobile medical device , Cameras, or wearable devices (e.g. smart glasses, head-mounted-device (HMD), electronic clothing, electronic bracelets, electronic necklaces, electronic accessories, It may include at least one of an electronic tattoo, a smart mirror, or a smart watch.

In the supply chain network system using the blockchain according to an embodiment, when the lowest production supplier, that is, the worker reports that the parts have been produced to the unit node 120 connected through the user terminal 110, the blockchain network is configured. As the supply chain network system reacts, updated business books can be synchronized. In other words, the business ledger created by the lowest production supplier can be immediately checked by the CEO, and the person who wants to buy the parts can be identified.

Conventional supply chain network systems handle tasks through one central server, but the amount of tasks that need to be processed at one time is excessive and excessive power consumption is required. Thus, using the supply chain network system using the block chain according to the present invention, it is possible to have a block chain controller per branch and to update the business book through real-time synchronization between block chain controllers.

According to one embodiment, in a supply chain network system, all participants at different levels have equal security and access to all data, with better security, and can generate more revenue for the organization.

The business books for everyone in the supply chain, including faster and more secure communications, can be updated through the blockchain controller. In this system, end users can connect to the blockchain controller with their smart terminals to update and track information.

The user can share and access data of the blockchain controller through the user terminal. As a result, employees can see how profitable the company's owners are, making it easier for shareholders to make decisions based on performance, and make it easier for all departments to monitor input and output in the supply chain.

2 is a view for explaining the operation of the unit node connected to the user terminal in the blockchain system according to the present invention.

Referring to FIG. 2, the block chain system may include a first unit node 210 and a second unit node 211 constituting a block chain network with the first unit node 210. According to an embodiment, the blockchain system may include user terminals 220, 221, 222, 223, and 224 connected to the unit node 210.

In a blockchain system according to an embodiment, a plurality of unit nodes 210 and 211 are connected to at least one of wired and wireless communication networks, and mutual authentication and verification of data integrity among the plurality of nodes is performed in the unit node. Can be.

In this case, at least one user terminal may be connected to the unit node, and the unit node may be directly or indirectly connected to at least one of the wired and wireless communication networks, and may form an individual block including a business book prepared by the user terminal. Based on the blockchain, unique public and private keys can be generated and provided. Here, the plurality of unit nodes may have their own unique public key list, and transmits data combining their private keys to the other unit node for a node corresponding to a specific public key selected from the unique public key list. Can be synchronized.

According to an embodiment of the present disclosure, the unit node may be a blockchain controller that checks whether the business book created from the user terminal is valid and stores the valid business book.

In this case, the blockchain controller may be implemented as a network device to perform a hash value check.

In the present invention, a blockchain system can be implemented through a blockchain controller. In this case, the blockchain network is not a user terminal located at an end, but a node connected to the end user terminal forms a network, thereby serving as a blockchain controller. One node may simultaneously process transactions of one or more user terminals. The blockchain controller can use a search protocol to search for other blockchain controllers and user terminals in the network. The blockchain controller can grasp the details of the connected user terminal. Transactions occur between user terminals, but for data backup and security, the blockchain controller can store and synchronize transaction-related information with other blockchain controllers.

According to one embodiment, the blockchain controller can be installed and used in existing network equipment and infrastructure. Blockchain controllers not only provide a secure way of communicating or transacting, but they also encourage the use of blockchain by reducing the cost of installing new network devices to implement blockchain systems and reducing the computation / storage burden on user terminals. .

The user terminal 220, 221, 222, 223, 224, etc. according to various embodiments of the present disclosure may be, for example, a smartphone, a tablet personal computer, a mobile phone, a video phone. , E-book reader, desktop personal computer, laptop personal computer, netbook computer, workstation, server, personal digital assistant, PDA (portable multimedia player), MP3 player, mobile medical device, camera, or wearable device (e.g. smart glasses, head-mounted-device (HMD), electronic clothing, electronics) It may include at least one of a bracelet, an electronic necklace, an electronic accessory, an electronic tattoo, a smart mirror, or a smart watch.

The user terminal may be directly connected to the unit node regardless of the authority level.

According to an embodiment, the communication network may include a blockchain cloud, the wired communication network may include the Internet, and the wireless communication network may include at least one of a mobile communication network and a low power wide area network (LPWAN).

Although not explicitly shown, the apparatus shown in FIGS. 1 and 2 may further include components not shown in FIGS. 1 and 2, or may not include some components shown in FIGS. 1 and 2. 1 and 2, some components may be divided into a plurality of detailed components, or a plurality of components may be combined and provided as one component.

Although not explicitly shown, unlike FIG. 1 and FIG. 2, each device may be provided as a plurality of servers physically, spatially, or functionally divided. In this case, each server may or may not include some of the components shown in FIGS. 1 and 2.

On the other hand, the respective components of the device are separately shown in the drawings to indicate that they can be functionally and logically separated, and do not necessarily mean that they are physically separate components or implemented in separate code.

3 is a flowchart illustrating a supply chain network method performed by a node of a block chain system according to an exemplary embodiment of the present invention.

Referring to FIG. 3, a method of supply chain network between the first node 210, the second node 211, and the user terminal 220 may be identified.

According to an embodiment, in a blockchain operating method performed by a unit node (first node) 210 to which at least one user terminal 220 is connected, in operation S310, the user terminal 220 may be configured as a first node 210. ), You can view the business book or update the business book. That is, the first node 210 may receive the updated business book from the user terminal 220.

In operation S320, the first node 210 may review the validity of the user terminal 220.

In operation S330, when it is confirmed that the user terminal 220 is a valid user terminal, the first node 210 may generate and store an individual block related to the updated business book.

In operation S340, the first node 210 may synchronize with the second unit node 211, which is another unit node constituting the block chain.

The first node 210 of the blockchain system may search for the second node 211 included in the blockchain network using a discovery protocol. For example, a dynamic discovery protocol may be used to search for the closest user terminal and node for efficient transaction and data synchronization.

According to an embodiment, the node may be at least one of a cloud server, an eNodeB, a wireless access point, and wired / wireless network equipment.

The node of the blockchain system performs calculations related to updating of a business book between a user terminal and another user terminal, and may operate as a blockchain controller. For example, a node can perform all types of heavy calculations related to transactions, certificate verification, and synchronization. Thus, the user terminal can only perform light tasks and the powerful node can perform all remaining calculations.

At this time, the supply chain network system using the blockchain may be performed by blockchain-based communication from a government agency to a small company. Transparency can increase when the business books of all users are open to all users in the organization.

In addition, smart terminals can easily access the blockchain controller, allowing both users and service providers to create a healthy business platform with this blockchain communication.

Supply chain network systems using blockchain can give employees more responsibility and trust to users, allowing the company to make more profits.

On the other hand, the method according to an embodiment of the present invention can be implemented in the form of program instructions that can be executed by various computer means may be recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

In the above, the system, apparatus and method according to an embodiment of the present invention has been described in detail. In the above-described embodiment of the present invention, the user terminal is described as an example, but the same may be applied to any electronic device. Hereinafter, various implementations of electronic devices that can be modified including user terminals according to an embodiment of the present disclosure will be described.

The present invention has been described above with the aim of method steps indicative of the performance of certain functions and their relationships. The boundaries and order of these functional components and method steps have been arbitrarily defined herein for convenience of description. Alternative boundaries and orders may be defined so long as the specific functions and relationships are properly performed. Any such alternative boundaries and orders are therefore within the scope and spirit of the claimed invention. In addition, the boundaries of these functional components have been arbitrarily defined for ease of explanation. Alternative boundaries may be defined so long as any important functions are performed properly. Likewise, flowchart blocks may also be arbitrarily defined herein to represent any important functionality. For extended use, the flowchart block boundaries and order may have been defined and still perform some important function. Alternative definitions of both functional components and flowchart blocks and sequences are therefore within the scope and spirit of the claimed invention.

The invention may also be described, at least in part, in terms of one or more embodiments. Embodiments of the invention are used herein to illustrate the invention, aspects thereof, features thereof, concepts thereof, and / or examples thereof. Physical embodiments of apparatus, articles of manufacture, machines, and / or processes embodying the present invention may be described in terms of one or more aspects, features, concepts, examples, etc. described with reference to one or more embodiments described herein. It may include. Moreover, in the entire drawing, embodiments may incorporate the same or similarly named functions, steps, modules, etc. that may use the same or different reference numbers, and as such, the functions, The steps, modules, etc. may be the same or similar functions, steps, modules, etc. or others.

In the present invention as described above has been described by the specific embodiments, such as specific components and limited embodiments and drawings, but this is only provided to help a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and all of the equivalents and equivalents of the claims as well as the claims to be described later belong to the scope of the present invention. .

210: first node
211: second node
220, 221, 222, 223, 224: user terminal

Claims (6)

A block chain system in which a plurality of unit nodes are connected to at least one of wired and wireless communication networks, and mutually verifying the integrity of data among the plurality of nodes in the unit node.
At least one user terminal is connected to the unit node,
The unit node,
Generate and provide a unique public key and a private key based on a block chain, which is directly or indirectly connected to at least one of the wired and wireless communication networks and links individual blocks including a business ledger created by the user terminal in a chain form,
Each of the plurality of unit nodes has a unique public key list, and transmits data combining its own private key to another unit node to synchronize the data with respect to a node corresponding to a specific public key selected from the unique public key list. Characterized in that,
The unit node,
A block chain controller which checks whether or not the business book created from the user terminal is valid and stores a valid business book;
The blockchain controller is a network device,
Blockchain system. delete The method of claim 1,
The blockchain controller,
To perform hash value checking
Blockchain system. The method of claim 1,
The user terminal,
Connected directly to the unit node, regardless of permission level
Blockchain system. The method of claim 1,
The communication network includes a blockchain cloud,
The wired communication network includes the Internet, and the wireless communication network includes at least one of a mobile communication network and a low power wide area network (LPWAN).
Blockchain system. In the blockchain operating method performed by a unit node connected to at least one user terminal,
Receiving a business book updated by the unit node from the user terminal;
Checking, by the unit node, the validity of the user terminal;
If it is confirmed that the user terminal is valid, generating and storing the individual blocks by the unit node; And
The unit node synchronizing with other unit nodes forming a block chain
Including,
The unit node,
Blockchain operating method, which is a network device.

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