WO2020060094A1 - Dispositif de nœud constituant un réseau de chaîne de blocs et procédé de fonctionnement d'un dispositif de nœud - Google Patents

Dispositif de nœud constituant un réseau de chaîne de blocs et procédé de fonctionnement d'un dispositif de nœud Download PDF

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Publication number
WO2020060094A1
WO2020060094A1 PCT/KR2019/011647 KR2019011647W WO2020060094A1 WO 2020060094 A1 WO2020060094 A1 WO 2020060094A1 KR 2019011647 W KR2019011647 W KR 2019011647W WO 2020060094 A1 WO2020060094 A1 WO 2020060094A1
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WO
WIPO (PCT)
Prior art keywords
blockchain network
public
blockchain
block
user
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PCT/KR2019/011647
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English (en)
Korean (ko)
Inventor
김성완
이형택
Original Assignee
김성완
이형택
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Publication of WO2020060094A1 publication Critical patent/WO2020060094A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
    • G06Q20/3829—Payment protocols; Details thereof insuring higher security of transaction involving key management
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
    • G06Q20/36—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using electronic wallets or electronic money safes
    • G06Q20/367—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using electronic wallets or electronic money safes involving electronic purses or money safes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
    • H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0894—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees

Definitions

  • the present invention relates to a blockchain technology, and more specifically, to prevent a user from owning a private key, and further comprising a node device and a node device constituting a blockchain network capable of interworking with various types of electronic money based on the blockchain. It relates to a method of operation.
  • electronic money is a digital currency that exists virtually on the Internet.
  • Bitcoin a typical electronic money among such electronic money, has a structure in which there is no central device for issuing and managing currency, and the transaction of Bitcoin is based on a blockchain.
  • Blockchain is a non-falsifiable distributed storage created and managed by a peer-to-peer (P2P) network.
  • P2P peer-to-peer
  • Blockchain means a collection of data blocks created by transactions (indivisible unit work between two parties) in a chain. Once recorded, data cannot be forged or tampered with.
  • the confirmed transaction history generated between users for a certain period of time can be stored.
  • Many of the nodes that make up the blockchain network each have a copy of the blockchain, and transaction details can be made public.
  • the electronic money based on the blockchain is transacted based on the public key cryptography.
  • Users who have electronic money have their wallet address, and when sending or making a transaction, they sign with a private key to generate a transaction. Therefore, the user should keep his private key well, so that the user has a lot of difficulty in managing the private key personally and is exposed to the risk of hacking.
  • the present invention has been proposed to solve the above-mentioned problems, and it is possible to enhance security while not allowing users to directly own their own private key, and also construct a blockchain network that can interwork with various types of electronic money based on blockchain.
  • An object of the present invention is to provide a node device and a method of operating the node device.
  • a node device of a first blockchain network composed of a plurality of node devices includes: a communication circuit communicating with a client device and other node devices; One or more processors; And a memory for storing instructions executable by the one or more processors, wherein the one or more processors are first used by a user using the client device in the first blockchain network at the request of the client device.
  • the first random encryption key is generated to encrypt the private block in which the first private key is stored, and the first random encryption key is divided into a predetermined number to distribute the divided pieces to other node devices and to store them.
  • the divided pieces are received from other node devices and based on this.
  • the transaction is a transfer of a first kind of coin commonly used in the first blockchain network from the user to another user, wherein the one or more processors sign the transaction with the first private key and transmit it to another node device It is possible to verify with the first public key, and upon verification completion, the corresponding transaction can be stored in the public block of the public blockchain.
  • the communication circuit further communicates with a second blockchain network, and the one or more processors make a wallet creation request to the second blockchain network upon receiving a wallet creation request for use in the second blockchain network from the client device. Transmit, receive the second private key, the second public key and the second wallet address generated in the second blockchain network from the second blockchain network according to the wallet creation request, the second public key and the Store the second wallet address in the public block of the public blockchain, store the second private key in the private block of the private blockchain, and generate a second random encryption key to encrypt the private block in which the second private key is stored The second random encryption key is divided into a predetermined number, and the fragments are distributed to other node devices and stored.
  • the divided pieces of the second random encryption key are received from other node devices, and based on this, the second private key is stored and encrypted from the encrypted private block.
  • the second private key can be decrypted and used.
  • the transaction to be transmitted to the second blockchain network is a remittance of a second kind of coin commonly used in the second blockchain network from the user to another user, and the one or more processors are to be transmitted to the second blockchain network
  • the transaction can be stored in the public block of the public blockchain.
  • the one or more processors upon request of the client device, may check the balance of the second kind of coin of the user in the public block of the public blockchain and provide it to the client device.
  • the transaction to be transmitted to the second blockchain network is a second kind of coin commonly used in the second blockchain network as a remittance from the user to another user as a first kind of coin commonly used in the first blockchain network.
  • the one or more processors after changing the wallet address of the other user recorded in the transaction to be transmitted to the second blockchain network, to the second kind of coin operated wallet address of the first blockchain network
  • the second private key is signed and transmitted to the second blockchain network, and upon receiving a processing response, the transaction is stored in the public block of the public blockchain, and the first kind of the first blockchain network
  • the second kind of coin from the coin operated wallet address to the first wallet address of the other user A transaction in which the first kind of coin corresponding to the amount of money is transferred can be stored in the public block of the public blockchain.
  • the plurality of node devices includes a plurality of representative node devices and a plurality of general node devices, and the plurality of representative node devices generate blocks by synchronizing proof of ownership to synchronize blocks, and the general node device is a block of representative node devices. And store them in synchronization, and the node device of the first blockchain network may be a representative node device.
  • a method of operating a node device in a first blockchain network is a user who uses the client device in response to a request of a client device connected through a communication network within the first blockchain network.
  • Generating a first private key, a first public key, and a first wallet address to be used in Storing the first public key and the first wallet address in a public block of a public blockchain; Storing the first private key in a private block of the private blockchain and generating a first random encryption key to encrypt the private block in which the first private key is stored; Dividing the first random encryption key into a predetermined number and distributing and storing the divided pieces to other node devices; And when the user's transaction occurs, receiving the divided pieces from other node devices and decrypting and using the first private key from the encrypted private block based on this.
  • the transaction is a transfer of a first kind of coin commonly used in the first blockchain network from the user to another user, wherein the step of using is signing the transaction with the first private key and transmitting it to another node device. It may include the step of allowing verification with the first public key, and storing the transaction in the public block of the public blockchain upon verification completion.
  • the operation method may include transmitting a wallet creation request to the second blockchain network upon receiving a wallet creation request for use in the second blockchain network from the client device; Receiving a second private key, a second public key, and a second wallet address generated in the second blockchain network from the second blockchain network according to the wallet creation request; Storing the second public key and the second wallet address in a public block of a public blockchain; Storing the second private key in a private block of the private blockchain and generating a second random encryption key to encrypt the private block in which the second private key is stored; Dividing the second random encryption key into a predetermined number and distributing and storing the divided pieces to other node devices; And when the transaction to be transmitted to the second blockchain network of the user occurs, receiving the fragment pieces of the second random encryption key from other node devices and based on this, the second private key is stored and encrypted from the encrypted private block. 2 It may further include the step of decrypting and using the private key.
  • the transaction to be transmitted to the second blockchain network is a remittance of a second kind of coin commonly used in the second blockchain network from the user to another user.
  • the step of decrypting and using the second private key includes: 2 Signing the transaction to be sent to the blockchain network with the second private key, transmitting it to the second blockchain network, and receiving the processing response, storing the transaction in the public block of the public blockchain. have.
  • the operation method may further include the step of confirming the balance of the second kind of coin of the user in the public block of the public blockchain to the client device at the request of the client device.
  • the transaction to be transmitted to the second blockchain network is a second kind of coin commonly used in the second blockchain network as a remittance from the user to another user as a first kind of coin commonly used in the first blockchain network.
  • the transfer of money exchanged, and the step of decrypting and using the second private key is to operate the second kind of coin in the first blockchain network by using the wallet address of the other user recorded in the transaction to be transmitted to the second blockchain network.
  • the plurality of node devices includes a plurality of representative node devices and a plurality of general node devices, and the plurality of representative node devices generate blocks by synchronizing proof of ownership to synchronize blocks, and the general node device is a block of representative node devices.
  • the node devices performing synchronization and storing the same may be representative node devices.
  • the present invention operates by dividing the blockchain into a private blockchain and a public blockchain, and stores the user's private key in a private block of the private blockchain, thereby blocking external exposure of the private key to enhance security.
  • the present invention encrypts a private block storing a private key with a random encryption key, then distributes the random encryption key to node devices constituting a blockchain network and stores the random encryption key only under the approval of the node devices. Collects them so that the private key can be decrypted, thereby preventing hacking of the private key and enhancing security.
  • the present invention can increase the convenience of the user and increase the utilization of the electronic money by allowing various types of electronic money to be used in one blockchain network.
  • FIG. 1 is a view showing a system according to an embodiment of the present invention.
  • FIG. 2 is a block diagram of a representative node of FIG. 1.
  • FIG. 3 is a flow chart illustrating the innocoin subscription procedure and the innocoin wallet creation procedure in the system of FIG. 1.
  • FIG. 4 is a flowchart illustrating a procedure for creating a Bitcoin wallet through the Innocoin blockchain network in the system of FIG. 1.
  • FIG. 5 is a flowchart illustrating a procedure for sending Incoin within the Innocoin blockchain network in the system of FIG. 1.
  • FIG. 6 is a flowchart illustrating a procedure for sending bitcoin through the Innocoin blockchain network in the system of FIG. 1.
  • FIG. 7 is a flowchart illustrating a procedure for converting and transferring Bitcoin to Innocoin through the Innocoin blockchain network in the system of FIG. 1.
  • the network 130 returns the result to the representative node 121 of the Innocoin blockchain network 120 (S705).
  • the representative node 121 of the Innocoin blockchain network 120 records the corresponding bitcoin transfer transaction in the public block of the public blockchain (S706). Therefore, in the public blockchain, the bitcoin balance of the sender is deducted by the amount of the bitcoin that was transferred, and, conversely, the balance of the Incoin's bitcoin-operated wallet address is increased by the corresponding bitcoin.
  • the sender that is, the user checks the balance of his / her own Bitcoin, without having to access and check the Bitcoin blockchain network 130
  • the Innocoin blockchain network 120 can directly inform the user of the Bitcoin balance. have.
  • the representative node 121 checks the exchange rate between Bitcoin and Innocoin (S707).
  • the exchange rate can be checked on a separate server, or information stored by itself can be used.
  • the representative node 121 stores in a public block a transaction for remitting the Innocoin corresponding to the transferred bitcoin to the Innocoin wallet address of the original recipient according to the exchange rate (S708). Therefore, the balance of the Innocoin-operated wallet address serving as a key currency decreases, and the Innocoin balance of the recipient's Incoin wallet address increases.
  • storing data in a block means creating a block by proof of stake between representative nodes 121 in the Innocoin blockchain network 120, and is understood in the following claims as well Should be.
  • the method of the present invention as described above may be implemented as a program and stored in a computer readable form on a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.). Such a process will not be described in detail any more as those skilled in the art to which the present invention pertains can easily carry out.

Abstract

L'invention concerne : un dispositif de nœud constituant un réseau de chaîne de blocs, grâce auquel la sécurité peut être renforcée en empêchant chaque utilisateur de posséder directement sa clé privée, et une liaison à une grande variété de devises électroniques à base de chaîne de blocs peut être obtenue ; ainsi qu'un procédé de fonctionnement du dispositif de nœud. Un dispositif de nœud d'un premier réseau de chaîne de blocs comprenant une pluralité de dispositifs de nœud, selon un aspect, comprend : un circuit de communication pour communiquer avec un appareil client et d'autres dispositifs de nœud ; au moins un processeur ; et une mémoire dans laquelle une instruction exécutable par le ou les processeurs est stockée, le ou les processeurs : générant, au niveau de la demande de l'appareil client, une première clé privée, une première clé publique, et une première adresse de portefeuille à utiliser dans le premier réseau de chaîne de blocs par un utilisateur à l'aide de l'appareil client ; stockant la première clé publique et la première adresse de portefeuille dans un bloc public d'une chaîne de blocs publics ; stockant la première clé privée dans un bloc non public d'une chaîne de blocs non public, et générant une première clé de chiffrement aléatoire pour chiffrer le bloc non public dans lequel la première clé privée est stockée ; divisant la première clé de chiffrement aléatoire en un nombre prédéterminé de parties, et stockant les éléments de division dans d'autres dispositifs de nœud de telle sorte que les éléments sont distribués parmi les dispositifs de nœud ; et recevant les éléments de division des dispositifs de nœud lorsque la transaction de l'utilisateur a lieu, puis décryptant la première clé privée dans le bloc non public chiffré sur la base des pièces reçues pour utiliser la première clé privée.
PCT/KR2019/011647 2018-09-21 2019-09-09 Dispositif de nœud constituant un réseau de chaîne de blocs et procédé de fonctionnement d'un dispositif de nœud WO2020060094A1 (fr)

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KR10-2018-0113719 2018-09-21
KR1020180113719A KR101984254B1 (ko) 2018-09-21 2018-09-21 블록체인 네트워크를 구성하는 노드 장치 및 그 노드 장치의 동작 방법

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KR101984254B1 (ko) * 2018-09-21 2019-05-30 김성완 블록체인 네트워크를 구성하는 노드 장치 및 그 노드 장치의 동작 방법
KR102244890B1 (ko) * 2019-06-26 2021-04-27 넷마블 주식회사 글로벌 인증 계정 시스템
CN110458558A (zh) * 2019-07-04 2019-11-15 重庆金融资产交易所有限责任公司 基于区块链的数据保密方法、装置和计算机设备
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KR102044747B1 (ko) 2019-07-30 2019-11-15 주식회사 바스랩 블록체인 기반 사용자 인증서비스 제공방법
KR102125042B1 (ko) * 2019-11-12 2020-06-19 주식회사 이노티움 블록체인 네트워크를 구성하는 노드 장치 및 그 노드 장치의 동작 방법
KR102274493B1 (ko) * 2019-11-15 2021-07-07 주식회사 이노티움 온라인 게시글에 대한 분쟁 해결을 위한 블록체인 네트워크를 구성하는 노드 장치 및 그 노드 장치의 동작 방법
KR102425058B1 (ko) * 2019-11-29 2022-07-27 순천향대학교 산학협력단 블록 체인 노드의 블록 전파 방법
CN110990872B (zh) * 2019-12-03 2022-03-25 成都链鱼科技有限公司 基于区块链的私钥导出二维码存储及扫描恢复方法
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