JP2020043464A - Virtual currency trading system using virtual currency, user terminal on user side, virtual currency trading system support system, and virtual currency trading method - Google Patents

Abstract

To provide a virtual currency trading system capable of securely holding a private key used to sign a transaction in a blockchain network.SOLUTION: In a virtual currency transaction system 100 using virtual currency, in a virtual currency wallet management 4 provided in a sender terminal 1, a transaction as transaction information, a virtual currency address as authentication information, a public key, a secret key, and information required for other authentication are set. A virtual currency wallet application 13 divides the secret key into bits and converts the secret key into a bit-wise secret key, and performs a tally division process to generate a plurality of divided tally character strings, and divides and stores the generated plurality of division tally character strings in a plurality of servers 20. Further, the secret key is deleted from the virtual currency wallet.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a virtual currency transaction system using virtual currency, a user terminal on the user side, a support system for the virtual currency transaction system, and a virtual currency transaction method.

  Patent Literature 1 describes an electronic wallet system in which a secret key is shared by all electronic wallets and a message exchanged between smart cards is protected by the secret key.

  Patent Literature 2 describes that electronic information is converted into a plurality of tally data, distributed and stored, and tally data is restored to electronic information based on a search keyword.

Patent Document 3 discloses a license information management system,
The user terminal generates a first key pair including a secret encryption key for digital signature and a public decryption key and a second key pair including a secret decryption key and a public encryption key. A generating unit;
A permission request unit for electronically signing and transmitting a permission request including the public encryption key of the second key pair with the secret encryption key of the first key pair, and a second key from the permission information transmitted by the right holder terminal. A content use unit that obtains a content composite key using a secret decryption key of the pair, and uses the content by using the content decryption key,
A key management unit that stores a third key pair including a secret encryption key for electronic signature and a public decryption key, and the content decryption key for decrypting the content;
A permission verification unit that verifies whether the permission request received from the user terminal satisfies a permission condition for the content,
If the license condition is satisfied, the content decryption key is encrypted using a public encryption key of the second key pair included in the license request, and license information including the encrypted content decryption key is transmitted to a third key pair. It is described that an electronic signature is transmitted using a secret encryption key of the user.

  Patent Literature 4 discloses a secret key management system including a terminal that performs authentication using a secret key, and that encrypts the secret key.

  Patent Literature 5 describes that a private key with personal information is deleted after use and is generated again.

  Patent Document 6 describes a number restoration system.

Japanese Patent No. 5170921 JP 2007-140869 A JP-A-2017-50763 JP 2018-37987 A JP-A-2002-185443 Japanese Patent No. 5895093

  The number of individual owners of virtual currency (encrypted electronic currency) is growing. While these facts are becoming mainstream, many people who access the exchanges still misunderstand that "I have cryptocurrencies" every time I look at my coin balance. Many people still do not understand the difference between using exchanges to handle currencies freely and owning cryptocurrencies. With virtual currencies, it is necessary to manage the secret key yourself. This is cumbersome and requires a wallet, or wallet. The virtual currency wallet in the virtual currency system built on the blockchain network means a tool for ownership and management in the virtual currency system, and only the owner has management authority.

  In a virtual currency system, two keys, a "public key" and a "private key", are paired and operated in combination. These two pieces of key information are encrypted. It is very important to keep the "secret key" secure at all times. In particular, when exchanging virtual currencies, a "secret key" that is also required for management must be kept securely. Private keys are used to sign transactions in blockchain networks and must be kept secure.

  `` Private keys, '' which are used frequently and are often shown repeatedly, are at risk because they may have been subject to prying eyes, mistakes, malicious behavior, and social engineering including hacking in the past .

  As described in Patent Documents 1 to 5 described above, electronic information is converted into a plurality of tally data, distributed and stored, and tally data is restored to electronic information based on a search keyword. It is known that a license request including a secret encryption key is electronically signed and transmitted, a content decryption key is encrypted, and a private key with personal information is deleted after use and is generated again. Also, as described in Patent Document 6, a method of tally dividing and restoring a personal number is known, but the tally division method described here is to divide a file into tally, and as it is. Then, it cannot be applied to the secret key used for virtual currency.

  In these patent documents, two keys, a "public key" and a "secret key", are paired, and the management of the secret key according to the characteristics and characteristics of the "secret key" in a virtual currency system operated in combination Without mention, if the private key is used to sign transactions in a blockchain network, the private key cannot be said to be kept secure.

  In view of the foregoing, the present invention provides a "public key" and a "private key" by keeping a private key secure when the private key is used to sign a transaction in a blockchain network. An object of the present invention is to manage a secret key according to the characteristics and characteristics of a “secret key” in a virtual currency system operated in combination with the two keys.

The present invention relates to a virtual currency trading system using virtual currency,
The virtual currency wallet that stores transaction information and authentication information receives the remittance user terminal and the remittance user terminal with the virtual currency wallet application formed on the remittance user terminal and remittance destination terminal. It consists of a user terminal on the user side, and a virtual currency transaction system equipped with a communication exchange means connecting these terminals,
When the user terminal of the user who is the remitter receives the transfer of the virtual currency wallet application and the user who is the remitter applies for the virtual currency transaction, the user terminal of the remitter is used. In the virtual currency wallet of the user terminal, a transaction as transaction information and a virtual currency address as authentication information, a public key, a secret key and other transaction information are set, and the secret key is divided into bit units and a bit unit secret key is set. To generate a plurality of divided tally character strings by performing tally division processing, dividing and storing the generated plurality of divided tally character strings in a plurality of servers, respectively, and storing the secret key from the virtual currency wallet. The secret key to be erased is managed, and when there is a virtual currency transaction instruction, transaction processing is performed and the virtual currency wallet is executed. Through the virtual currency transmission systems with al communication transfer means, send an authentication information virtual currency address, public key, private key, and other transaction information, the user side that receives the remittance to the user terminal,
A virtual terminal characterized in that the user terminal of the user receiving the remittance receives the authentication information, restores the original secret key from the divided tally character string stored in multiple servers, and performs transaction processing. Provide a virtual currency trading system using currency.

The present invention relates to a virtual currency trading system using virtual currency,
The virtual currency wallet that stores transaction information and authentication information receives the remittance user terminal and the remittance user terminal with the virtual currency wallet application formed on the remittance user terminal and remittance destination terminal. It consists of a user terminal on the user side, and a virtual currency transaction system equipped with a communication exchange means connecting these terminals,
When the user terminal of the user who is the remitter receives the transfer of the virtual currency wallet application and the user who is the remitter applies for the virtual currency transaction, the user terminal of the remitter is used. In the virtual currency wallet of the user terminal, a transaction as transaction information and a virtual currency address as authentication information, a public key, a secret key and other transaction information are set, and the secret key is divided into bit units and a bit unit secret key is set. Is converted to a tally splitting process to generate a plurality of split tally character strings, and the generated split tally character strings are divided and stored in a plurality of servers, respectively.
Tally division of transaction information and authentication information other than the secret key is made as division tally information, and divided and stored in a plurality of servers, respectively.
Manages a secret key to erase transaction information and authentication information including the secret key from the virtual currency wallet,
When there is a virtual currency transaction instruction, a transaction process is performed, and a virtual currency address, a public key, a secret key, and other transactions, which are authentication information, are transmitted from the virtual currency wallet via a virtual currency transmission system provided with communication means. Send the information to the user terminal of the user receiving the remittance,
The user terminal of the user who receives the remittance receives the transaction information and authentication information, restores the original secret key from the divided tally character string stored in multiple servers, and performs the transaction processing. A virtual currency trading system using a virtual currency is provided.

The present invention is a user terminal on the user side that is a remitter used in the virtual currency transaction system using the virtual currency described above,
In response to the transfer of the virtual currency wallet appreciation, a virtual currency wallet is formed, a secret key composed of a character string of the user who is the sender is generated, and when a virtual currency transaction is applied by the sender, the virtual currency is applied. In the currency wallet, set transaction information including transactions and authentication information including virtual currency address, public key, secret key and other transaction information, divide the secret key into bits and convert it to bit unit secret key, A plurality of division tally strings are generated by performing division processing, and the generated plurality of division tally strings are divided and stored in a plurality of servers, respectively, and the secret key is deleted from the virtual currency wallet. The user, who is the remitter used in the virtual currency transaction system using virtual currency, which is characterized by Provide a user terminal.

The present invention relates to a virtual currency trading system support system that provides a virtual currency wallet application adopted in the above-described virtual currency trading system,
Set transaction information including transactions and authentication information including virtual currency address, public key, secret key and other transaction information, divide the secret key into bit units and convert them into bit unit secret keys, and perform tally division processing Generating a plurality of division tally strings, dividing the generated plurality of tally strings into a plurality of servers, storing the divided tally strings, and managing a secret key for deleting the secret key from the virtual currency wallet. When a virtual currency wallet application is formed and the virtual currency wallet application is transferred to the user terminal of the remitter user, the virtual currency wallet is transferred to the user terminal of the remitter user. Cryptocurrency wallet appreciation adopted in cryptocurrency trading system characterized by forming To provide a support system of virtual currency trading system to provide.

The present invention relates to a virtual currency trading system support system that provides a virtual currency wallet application adopted in the above-described virtual currency trading system,
When relocating the virtual currency wallet appreciation to the sender terminal, the virtual currency wallet appreciation can be relocated even if it is either a software type virtual currency wallet or a hardware type virtual currency wallet. A virtual currency trading system supporting system for providing a virtual currency wallet application adopted in a virtual currency trading system characterized by the following.

The present invention relates to a user terminal on the remittance side in which a virtual currency wallet for storing transaction information and authentication information has a user terminal on the user side as the remitter and a virtual currency wallet application formed on the remittee destination terminal. And a user terminal on the user side receiving the remittance, and a virtual currency transaction method using a virtual currency transaction system using a virtual currency transaction system comprising a virtual currency transaction system provided with a communication exchange means connecting these terminals,
When the user terminal of the user who is the remitter receives the transfer of the virtual currency wallet application and the user who is the remitter applies for the virtual currency transaction, the user terminal of the remitter is used. In the virtual currency wallet of the user terminal, a transaction as transaction information and a virtual currency address as authentication information, a public key, a secret key and other transaction information are set, and the secret key is divided into bit units and a bit unit secret key is set. To generate a plurality of divided tally character strings by performing tally division processing, dividing and storing the generated plurality of divided tally character strings in a plurality of servers, respectively, and storing the secret key from the virtual currency wallet. The secret key to be erased is managed, and when there is a virtual currency transaction instruction, transaction processing is performed and the virtual currency wallet is executed. Through the virtual currency transmission systems with al communication transfer means, send an authentication information virtual currency address, public key, private key, and other transaction information, the user side that receives the remittance to the user terminal,
A virtual terminal characterized in that the user terminal of the user receiving the remittance receives the authentication information, restores the original secret key from the divided tally character string stored in multiple servers, and performs transaction processing. Provided is a virtual currency trading method by a virtual currency trading system using currency.

The present invention provides a virtual currency wallet that includes a database and stores transaction information and authentication information, and a remittance side in which a virtual currency wallet application is formed on a user terminal of the user who is the remittant and a remittee destination terminal. In a virtual currency trading method using a virtual currency trading system using a virtual currency comprising a user terminal and a user terminal on the side of the user receiving the remittance, and a virtual currency trading system provided with a communication exchange means connecting these terminals,
When the user terminal of the user who is the remitter receives the transfer of the virtual currency wallet application and the user who is the remitter applies for the virtual currency transaction, the user terminal of the remitter is used. In the virtual currency wallet of the user terminal, a transaction as transaction information and a virtual currency address as authentication information, a public key, a secret key and other transaction information are set, and the secret key is divided into bit units and a bit unit secret key is set. Is converted to a tally splitting process to generate a plurality of split tally character strings, and the generated split tally character strings are divided and stored in a plurality of servers, respectively.
Tally division of transaction information and authentication information other than the secret key is made as division tally information, and divided and stored in a plurality of servers, respectively.
Manages a secret key to erase transaction information and authentication information including the secret key from the virtual currency wallet,
When there is a virtual currency transaction instruction, a transaction process is performed, and a virtual currency address, a public key, a secret key, and other authentication information, which are authentication information, are transmitted from the virtual currency wallet via the virtual currency transmission system equipped with communication means. The necessary information (that is, other user identification information) to the user terminal of the user receiving the remittance,
The user terminal of the user who receives the remittance receives the transaction information and authentication information, restores the original secret key from the divided tally character string stored in multiple servers, and performs the transaction processing. A virtual currency trading method is provided by a virtual currency trading system using virtual currency.

  When the remitter terminal receives the transfer of the virtual currency wallet application and applies for a financial transaction by the remitter, a virtual currency block, a secret key, and a public key corresponding to the amount of money to be transferred to the virtual currency wallet are sent to the remitter terminal. A key and a virtual currency address are set, the secret key is divided into bits, converted into a bit-wise secret key, tally division processing is performed to generate a plurality of division tallies, and the generated division tallies are divided into a plurality of servers. And manages the secret key to delete the secret key from the virtual currency wallet. This allows the private key to be kept secure when the private key is used to sign transactions in a blockchain network, and the "public key" and "private key" are paired. It is possible to manage the secret key according to the characteristics and characteristics of the “secret key” in the virtual currency system operated in combination.

FIG. 1 is a diagram showing a configuration of a financial transaction system using virtual currency according to an embodiment of the present invention. Diagram showing the outline of a transaction Diagram showing examples of secret key, public key, virtual currency address and their generation Diagram showing types of virtual currency wallets Diagram showing advantages and disadvantages of each virtual currency wallet FIG. 2 is a diagram illustrating a conventional tally distribution method and a tally distribution method according to an embodiment of the present invention. Diagram summarizing the advantages of the character string division method compared to the file division method Diagram showing the difference between tally distribution method for files and tally distribution method for character strings FIG. 7 is a diagram showing that a secret key generation method of a virtual currency wallet according to the present embodiment is generated by hierarchical determination. The figure which shows the storage method of the private key in the conventional virtual currency wallet, and the storage method of the private key in the virtual currency wallet by the Example of this invention The figure which shows the example of the storage method of the secret key in virtual currency wallet by the Example of this invention The figure which shows the structure about the financial transaction system using the virtual currency which is another Example of this invention. FIG. 11 is a diagram corresponding to FIG. 10 and shows a method of storing stored secret keys, public keys, and virtual currency addresses. Diagram showing details of storage method of virtual currency wallet Diagram showing software or virtual currency wallet that can be selected from software FIG. 2 is a diagram showing a flow of an embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a configuration of a financial transaction system using virtual currency according to an embodiment of the present invention.
<Electronic payment system, blockchain, virtual currency address>
A cryptocurrency transaction is made by a user writing a record of the transaction on a blockchain. An electronic payment system using virtual currency is characterized in that payment can be made without an administrator of the electronic payment system. Transaction records are made public. When a transaction is made public, the most important issue is to ensure the security of the recognition information of the user's personal information. A virtual currency address is used to send and receive virtual currency. >
<Transaction information and transactions>
A transaction refers to virtual currency exchange and virtual currency transaction data. Transaction information refers to transaction-related information for virtual currency transactions.

FIG. 2 shows an outline of a transaction and transaction information. An overview of transactions and transaction information is known.
<Generation of private key, public key and virtual currency address>
FIG. 3 shows examples of secret keys, public keys, and virtual currency addresses and their generation. The authentication information is a concept including such information.
<Remittance flow>
Transactions that are exchanges and transactions of virtual currency are managed by a virtual currency wallet on the user terminal of the user who is the remitter. For example, when Mr. A remits virtual currency to Mr. B, the flow is as follows.
1) Mr. A encrypts his / her electronic signature (proof of identity) with his / her private key and attaches it to the transaction information.
2) Mr. B generates a “virtual currency address” (like an account that receives virtual currency) from a “public key” created based on his private key.
A encrypts the transaction using the public key for B's virtual currency address and sends the virtual currency.
4) Mr. B decrypts the transaction using his private key attached to the virtual currency address and proves ownership of the virtual currency on this virtual currency address.
5) B decrypts the electronic signature from A's public key, and confirms that it is truly from A's remittance.

This exchange requires a private key, but the virtual currency wallet is responsible for generating and storing it.
<Main role of virtual currency wallet>
-Creation and storage of "private key" necessary for conducting transactions, "public key" created based on this secret key, and virtual currency address (bitcoin address) created based on this public key-Transaction Generation of information, creation of electronic signature, execution of transaction ・ Acquisition of transaction status of remittance and payment The balance information of virtual currency is not recorded in the virtual currency wallet itself.
<Risk of private key leakage>
When a private key deposited on an exchange is hacked:
Currently, the famous crypto exchanges in each country have been hacked their secret keys and have been heavily damaged. Many users are depositing their assets on the virtual currency exchange, but they are not being protected from hackers.
If you are self-managing with a software virtual currency wallet or hardware virtual currency wallet and your private key is hacked:
It is said that private keys can be hacked. Conventional methods cannot protect their assets from hacker attacks.
<Tally split>
In the present embodiment, the tally division is used as including dividing the tally and distributing and storing the divided tally in a server including a device having storage means.
<Terminal>
In the present embodiment, the terminal is used in a concept including a personal computer (PS) or a mobile (portable terminal).
<User terminal>
It includes a user terminal 1 of the user who is the remitter and a user terminal 2 of the user who receives the remittance.

  The financial transaction system using a virtual currency according to the embodiment of the present invention shown in FIG. 1 copes with the risk of secret key leakage.

  In FIG. 1, a financial transaction system 100 using virtual currency manages a user terminal 1 of a user who is a remitter, a user terminal 2 of a user who receives a remittance, and a virtual currency wallet application provider. It is composed of a trader terminal 3. The user terminal 1 of the user who is the remitter and the user terminal 2 of the user who receives the remittance have virtual currency wallets, respectively, and perform virtual currency wallet management 4 and 5.

  The virtual currency wallet application provider terminal 3 creates 13 a virtual currency wallet application using a tally engine created by the company.

  The virtual currency wallet application provider terminal 3 sets a tally engine to be stored in the virtual currency wallet, generates a computer-readable recording medium in which a program for operating a computer is recorded, and is a remitter. The user is transferred to the user terminal 1 on the user side and the user terminal 2 on the user side receiving the remittance. That is, a recording medium that can be read by the user terminal 1 of the user who is the remitter and the user terminal 2 of the user who receives the remittance is generated.

A virtual currency wallet, a tally engine stored is set, a computer-readable recording medium recorded by a program that causes the computer to function,
In the virtual currency wallet, a transaction as transaction information and a virtual currency address as authentication information, a public key, a secret key and other transaction information are set, and the secret key is divided into bits and converted into a bit unit secret key, Tally division processing is performed to generate a plurality of division tally character strings, the generated plurality of division tally character strings are divided and stored in a plurality of external servers, respectively, and the secret key is deleted from the virtual currency wallet. The private key can be managed by the virtual currency wallet.

The computer-readable recording medium recorded by the program that causes the computer to function divides the cryptocurrency address and the public key other than the secret key into tally, and forms a divided tally character string, which is divided into a plurality of external servers. Let me keep
Management for erasing authentication information including the secret key from the virtual currency wallet can be performed.

  Further, the computer-readable recording medium recorded by the program that causes the computer to function has a virtual currency wallet appreciation in the form of either a software type virtual currency wallet or a hardware type virtual currency wallet. , It can be relocated to the sender terminal of the virtual currency wallet appreciation.

The cryptocurrency wallet application stores the secret key of the user who is the sender in the database of each terminal, and when the user who is the sender remits to apply for a transaction in virtual currency, the user who is the sender is In the user terminal 1 on the side, the virtual currency wallet is
Transaction information ・ Transaction authentication information ・ Virtual currency address ・ Public key ・ Private key ・ Other information required for authentication (that is, other user identification information)
, The secret key is divided into bits, converted into a bit-wise secret key, tally division processing is performed to generate a plurality of division tallies, and the generated division tallies are divided into a plurality of servers. It manages a secret key that is stored and erases the secret key from the virtual currency wallet, and sets transaction information, transaction authentication information, and virtual currency from the virtual currency wallet via a remittance system equipped with communication transfer means. Address ・ Public key ・ Private key ・ Other information required for authentication (that is, other user identification information)
Is transmitted to the virtual currency address of the user terminal 2 of the user who receives the remittance (14). The virtual currency wallet application is thus formed, and the virtual currency wallet application is transferred to the user terminal 1 of the user who is the remitter and the user terminal 2 of the user who receives the remittance.
The user terminal 1 of the user who is the remitter receives the transfer of the virtual currency wallet application, and performs the virtual currency wallet management 4.

Virtual currency wallet management 4
Transaction information ・ Transaction authentication information ・ Virtual currency address ・ Public key ・ Private key ・ Other information required for authentication (that is, other user identification information)
(15).

The user terminal 1 on the user side as the remitter causes the virtual currency wallet to store a secret key composed of alphanumeric characters, and when a financial transaction is applied by the remitter, the user terminal on the user side as the remitter 1. In the virtual currency wallet, transaction information, transaction authentication information, virtual currency address, public key, secret key, and other information required for authentication (ie, other user identification information)
Is set, the secret key is divided into bits, converted into a bit-wise secret key, tally splitting processing is performed to generate a plurality of split tallies, and the generated split tallies are divided into a plurality of servers 20 (server 1). , The server 2 and the server 3), and manages the secret key for deleting the secret key from the virtual currency wallet.

  As shown in FIG. 1, after the tally division process, the virtual currency wallet has no secret key (11). As a result, information about the secret key does not remain in the virtual currency wallet except during use. In the figure, this is indicated by a blank column.

When there is a remittance instruction, the transaction information, transaction authentication information, virtual currency address, public key, private key, and other information necessary for authentication are set from the virtual currency wallet via the remittance system 21 provided with communication transfer means. (Ie other user identification information)
Is sent to the virtual currency address of the user terminal 2 on the user side.

  The user terminal 2 of the user who receives the remittance after receiving the transfer of the virtual currency wallet application performs the virtual currency wallet management 5.

Virtual currency wallet management 5
Transaction information ・ Transaction authentication information ・ Virtual currency address ・ Public key ・ Private key ・ Other information required for authentication (that is, other user identification information)
(16).

  As shown in FIG. 1, there is no private key in the virtual currency wallet before the restoration process (12).

The user terminal 2 of the user who receives the remittance receives the transaction information and the authentication information, restores the original secret key from the divided tally stored in the plurality of servers, restores the authentication information, and Perform processing. Here, it is described that the secret key is subjected to the secrecy processing, but all or a part of the transaction information and the authentication information (excluding the secret key) may be encrypted by various methods.

  FIG. 4 is a diagram showing types of virtual currency wallets.

  FIG. 4 shows virtual currency wallets usable for each type of blockchain system.

Non-electronic cryptocurrency wallet owned by the user himself:
1) Paper wallet (cold wallet)
2) Brain wallet (cold wallet)
A PC is used for the transaction.

With the blockchain system 31,
・ Transaction occurrence ・ Transaction information is obtained.

Electronic virtual currency wallet owned by non-users:
3) Web services and virtual currency wallets managed by exchanges
・ Transaction occurrence ・ Transaction information is obtained.

Electronic virtual currency wallet owned by the user himself:
4) Software virtual currency wallet 5) Hardware virtual currency wallet
・ Transaction occurrence ・ Transaction information is obtained.

  FIG. 5 shows advantages and disadvantages of each virtual currency wallet.

In this embodiment,
4) Software virtual currency wallet 5) Hardware virtual currency wallet can be supported.

  FIG. 6 is a diagram illustrating a conventional tally dividing method and a tally dividing method according to an embodiment of the present invention.

  As shown in FIG. 6A, the conventional tally division method divides a file into tally files and stores the files in various servers.

  As shown in FIG. 6 (2), the tally dividing method according to the embodiment of the present invention is characterized in that a character stored in a database, that is, a character string composed of alphanumeric values is tally divided. Here, it is referred to as “character (character string) compatible version”. This idea focuses on the fact that the secret key is a character string.

  The private key is stored as a character string in a virtual currency wallet. The tally dividing method according to the present embodiment is characterized in that a character string is tally divided. The secret key is divided into bits and converted into a bit-wise secret key, and a tally dividing process is performed to generate a divided tally. The division method is shown in FIGS.

  As shown in FIG. 6 (2), when the secret key is formed of a file and the file is formed of a character string, the file is also a set of “string of bits”. It can be converted into a bit-wise secret key and subjected to a tally division process to generate a plurality of distributed divided tallies. Here, it is referred to as a “file compatible version”.

  The tally dividing method according to the present embodiment can correspond to both the “character (character string) compatible version” and the “file compatible version”, and includes a case limited to either one.

  In the conventional tally division method, the target of tally division is a file, but in the present embodiment, the target of tally division is a character string in a database, and the character string is divided into bits. It is converted into a bit-wise secret key and tally-divided. According to the present embodiment, even in the case of a file, if the file is composed of a character string, paying attention to the fact that the file is composed of a character string, , And a tally dividing process is performed to generate a plurality of divided tallies.

  In the present embodiment, the information directly divided by the tally in the “character (character string) compatible version” and the “file compatible version” is directly restored.

  In the division / restoration method of Patent Document 6, a method of temporarily converting a character string into an electronic file and dividing / restoring the file is adopted.

  In the case where the private key is formed of information such as a logo form QR code (registered trademark) in addition to a character string, the file is stored in the present embodiment as shown in FIG. The conventional method of distributing and storing files can be employed in combination with the method of dividing a tally in the state of a character string itself.

FIG. 7 collectively describes that the character string division method is superior to the file division method.

  FIG. 8 is a diagram showing the difference between the conventional tally division method for a file and the tally division method for a character string in the present embodiment.

In the tally division method for a file, the original file is tally divided by the tally division method to generate a tally divided file. The stored file is divided into block units A ₁ , B ₁ , C ₁ , A _{2,... According} to the tally division method, and a tally divided file is generated. Since the binary is invisible to the human eye, a process for making it visible (BASE256 encryption) is used.

  An identification code is generated at the divided timing. An identification code is added to each tally. For example, three tallies that are divided into three are generated. The tally to be aggregated is determined by referring to the identification code.

  Tally A, tally B, and tally C are stored in different database servers (folders) for each tally (file).

  In the tally dividing method for a character string, a tally divided character string is generated from the stored character string by the tally dividing method.

The stored character string composed of alphanumeric characters is divided into A ₁ , B ₁ , C ₁ , A _{2... In} bit units by a tally division method, and a tally-divided bit unit character string is generated. Since the binary is invisible to the human eye, a process for making it visible (BASE256 encryption) is used.

  An identification code is generated at the divided timing. An identification code is added to each tally. For example, three tallies that are divided into three are generated. The tally to be aggregated is determined by referring to the identification code.

Tally A, tally B, and tally C are stored in different database servers for each tally (tally divided character string).

  FIG. 9 is a diagram showing that the secret key generation method of the virtual currency wallet according to the present embodiment is generated by hierarchical determination. FIG. 9 relates to FIG. 6 in which the secret key generation method of the virtual currency wallet is generated by a hierarchical decision.

  In FIG. 9, in the virtual currency wallet according to the present embodiment, one seed that is randomly generated first is generated (seed generation). A “master secret key” is generated from this seed (Generation of Master Key Km). A child secret key is generated from this master (generation of Child Keys). Grandchild secret keys are sequentially generated from these child secret keys (generation of Grandchild Keys). A different secret key is required for each transaction. The grandchild secret key is used for each transaction.

Conventionally, when a secret key is lost, it is necessary to back up all the secret keys in order to cope with the loss of the secret key. However, the secret key generation of the virtual currency wallet which is hierarchically determined as shown in FIG. By adopting the method, the private key can be generated from the seed by backing up the seed only once.

  FIG. 10 is a diagram illustrating a conventional method of storing a secret key in a virtual currency wallet and a method of storing a secret key in a virtual currency wallet according to an embodiment of the present invention.

  As shown in FIG. 10A, a conventional virtual currency wallet was formed by transferring a conventional virtual currency wallet application to a PC or mobile. The conventional virtual currency wallet application corresponds to the conventional virtual currency wallet. Here, a bit coin wallet was formed as a virtual currency wallet. In the bitcoin wallet, transaction (bitcoin (transaction)) information is formed based on a transaction adopted in bitcoin.

Transaction information ・ Transaction authentication information ・ Virtual currency address ・ Public key ・ Private key ・ Other information required for authentication (that is, other user identification information)
Was formed and held on the bitcoin wallet.

  2. Description of the Related Art Conventionally, a secret key has been protected by encrypting data using a secret sharing method or tally-distributed by dividing a secret key filed using a secret sharing method to generate tally divided data and manage the secret key. In the former, there is a risk that it may be decrypted, and in the latter, there is an advantage that the management of the secret key is not necessary, but the secret key stored as a character string is filed and divided into tally, There is no tally division using the character and property of the secret key in which the secret key is stored as a character string.

  As shown in FIG. 10 (2), the virtual currency wallet of the present embodiment was formed by relocating the virtual currency wallet application of the present embodiment to a PC or mobile.

  The virtual currency wallet application of the present embodiment is relocated to form the virtual currency wallet of the present embodiment. The virtual currency wallet application corresponds to the virtual currency wallet. Here, a bit coin wallet was formed as a virtual currency wallet. Bitcoin wallet is a kind of virtual currency wallet. In the bitcoin wallet, transaction (bitcoin (transaction)) information based on a transaction adopted in bitcoin is formed. The following information is formed:

Transaction information ・ Transaction authentication information ・ Virtual currency address ・ Public key ・ Private key ・ Other information required for authentication (that is, other user identification information)
Was formed and held on the bitcoin wallet.

  The secret key is divided into bits and converted into a bit-wise secret key, a tally division process is performed to generate a plurality of divided tally character strings, and the generated plurality of divided tally character strings are stored in a plurality of servers 20 (for example, server 1). , Server 2 and server 3). The server 1, the server 2, and the server 3 respectively store the secret keys 1 / 3-3 / 3 that are separately stored. After use, this secret key is erased from the virtual currency wallet to ensure security. In this way, the management of the tally division / restoration processing of the secret key composed of a character string is performed.

As a result, not only the secret key is not stored inside the PC or mobile device, but also a tally division method utilizing the characteristics and properties of the secret key is formed inside the PC or mobile device.

  FIG. 11 is a diagram illustrating another method of storing a secret key in a virtual currency wallet according to an embodiment of the present invention.

Bitcoin and Ethereal were selected as virtual currencies, and transaction information was formed for Bitcoin and Ethereal. For Bitcoin wallet or Ethereal wallet,
Transaction information ・ Transaction authentication information ・ Virtual currency address ・ Public key ・ Private key ・ Other information required for authentication (that is, other user identification information)
A tally engine to form the was equipped. As the tally engine, one of a “character (character string) compatible version” and a “file compatible version” is adopted, and management is performed such that all transaction information is a tally splitting process / restoring process.

  If the information stored in the virtual currency wallet is a character string, it is recommended to use the “character (character string) compatible version”, and if it is a file, use the “file compatible version”. . For transaction information other than the secret key, the conventional tally division method shown in FIG. 5 may be employed.

In the case of the example of FIG. 11, all of the transaction information is stored in a distributed manner and does not have any information inside the PC or the mobile, so that no problem occurs even if hacked.

  FIG. 12 is a diagram showing a configuration of a financial transaction system using virtual currency according to another embodiment of the present invention. The configuration shown in this figure shows a configuration of a financial transaction system using virtual currency when the example shown in FIG. 11 is applied to the example shown in FIG.

As shown in FIG. 12, all of the transaction information is divided, that is, distributed and stored, so that the PC or mobile does not have any information. No problem when hacked.

  13 is a diagram corresponding to FIG. 10, and is a diagram showing a method of storing the stored private key, public key, and virtual currency address.

  For the private key, public key, virtual currency address, and other user names as personal identification information stored in the virtual currency wallet, respective division tally character strings are generated, and the online database server A and the online The data is distributed and stored in the database server B and the online database server C.

According to this example, the merit of generating the respective division tally character strings for all of the user name as the secret key, the public key, the virtual currency address, and other personal identification information is derived.

  FIG. 14 is a diagram showing details of the method of storing the virtual currency wallet in the case shown in FIG.

  In FIG. 14, a private key, a public key, a virtual currency address, and a user name as other personal identification information are stored in the virtual currency wallet, and the above-described processing is performed to generate respective split tally character strings. It is distributed or stored in online database server A, online database server B, and online database server C, and stores the private key, public key, virtual currency address, and other user names as personal identification information. A tally splitting method is shown in which all relevant information is erased. The tally division method is applied to not only the secret key but also all of the transaction information and the recognition information. The reverse process is performed for restoration.

  As a result, information about the transaction including the secret key does not remain in the virtual currency wallet except during use. In the figure, this is indicated by a blank column.

For the secret key, either a “character (character string) compatible version” or a “file compatible version” is adopted, and management is performed such that all transaction information becomes tally distribution processing and restoration processing.

  FIG. 15 is a diagram showing software or a virtual currency wallet that can be selected from software.

  The virtual currency wallet application provider terminal 3 creates 13 a virtual currency wallet application.

The cryptocurrency wallet application stores the private key of the remitter user in the database of each terminal, and when the remitter user applies for a financial transaction, the remitter user's side In the virtual currency wallet on the user terminal 1,
Transaction information ・ Transaction authentication information ・ Virtual currency address ・ Public key ・ Private key ・ Other information required for authentication (that is, other user identification information)
Is set, the secret key is divided into bits, converted into a bit-wise secret key, tally splitting processing is performed to generate a plurality of split tally character strings, and the generated split tally character strings are stored in a plurality of servers. And manages the secret key to erase the secret key from the virtual currency wallet. The virtual currency wallet is set via the remittance system provided with the communication transfer means. It has a function to send information to the virtual currency address of the user terminal of the user who receives the remittance (14).

  In the virtual currency wallet application, a hybrid-type virtual currency wallet that allows the user to select either a software type wallet or a hardware type wallet is created.

This hybrid virtual currency wallet combines the ease of use derived from software types with the high robustness of security derived from hardware types. By having two compatibility, software and hardware, both versions can be provided, and can be used for all users' PCs or mobiles.

  FIG. 16 is a diagram showing the flow of the embodiment of the present invention.

  In FIG. 16, the operation includes a user-side operation and a blockchain-side operation.

  A virtual currency wallet (for example, a software wallet type) is introduced into a PC or a mobile terminal, or a virtual currency wallet (for example, a hardware wallet type) is connected to a PC or a mobile terminal (S1).

  When a transaction of virtual currency is performed from within the wallet application, a secret key is generated internally, a public key is generated from the secret key, and a virtual currency address, for example, a bitcoin address is generated from the public key (S2).

  The transaction information is sent to the block chain, and processing is requested (S3).

  At the time of a transaction, necessary information is remotely aggregated, and after use, distributed and stored again. As a result, no information remains in the virtual currency wallet except during use.

  Processing by mining is performed in order from the transaction with the highest reward in the block chain (S4).

When the processing is completed, the result of the transaction is notified to the wallet application (S5).
The result of the transaction is displayed on the wallet application (S6).

  Reference numeral 100: a virtual currency transaction system using virtual currency; 1, a user terminal on the side of the user who is the remitter; 2; a user terminal on the side of the user who receives the remittance; Wallet management, 11, 12: No secret key exists, 13: Create virtual currency wallet application, 20: Server, 21: Remittance system (communication transfer means), 31: Blockchain system.

Claims (7)

In a virtual currency trading system using virtual currency,
The virtual currency wallet that stores transaction information and authentication information receives the remittance user terminal and the remittance user terminal with the virtual currency wallet application formed on the remittance user terminal and remittance destination terminal. It consists of a user terminal on the user side, and a virtual currency transaction system equipped with a communication exchange means connecting these terminals,
When the user terminal of the user who is the remitter receives the transfer of the virtual currency wallet application and the user who is the remitter applies for the virtual currency transaction, the user terminal of the remitter is used. In the virtual currency wallet of the user terminal, a transaction as transaction information and a virtual currency address as authentication information, a public key, a secret key and other transaction information are set, and the secret key is divided into bit units and a bit unit secret key is set. To generate a plurality of divided tally character strings by performing tally division processing, dividing and storing the generated plurality of divided tally character strings in a plurality of servers, respectively, and storing the secret key from the virtual currency wallet. The secret key to be erased is managed, and when there is a virtual currency transaction instruction, transaction processing is performed and the virtual currency wallet is executed. Through the virtual currency transmission systems with al communication transfer means, send an authentication information virtual currency address, public key, private key, and other transaction information, the user side that receives the remittance to the user terminal,
A virtual terminal characterized in that the user terminal of the user receiving the remittance receives the authentication information, restores the original secret key from the divided tally character string stored in multiple servers, and performs transaction processing. A virtual currency trading system using currencies. In a virtual currency trading system using virtual currency,
The virtual currency wallet that stores transaction information and authentication information receives the remittance user terminal and the remittance user terminal with the virtual currency wallet application formed on the remittance user terminal and remittance destination terminal. It consists of a user terminal on the user side, and a virtual currency transaction system equipped with a communication exchange means connecting these terminals,
When the user terminal of the user who is the remitter receives the transfer of the virtual currency wallet application and the user who is the remitter applies for the virtual currency transaction, the user terminal of the remitter is used. In the virtual currency wallet of the user terminal, a transaction as transaction information and a virtual currency address as authentication information, a public key, a secret key and other transaction information are set, and the secret key is divided into bit units and a bit unit secret key is set. Is converted to a tally splitting process to generate a plurality of split tally character strings, and the generated split tally character strings are divided and stored in a plurality of servers, respectively.
Tally division of transaction information and authentication information other than the secret key is made as division tally information, and divided and stored in a plurality of servers, respectively.
Manages a secret key to erase transaction information and authentication information including the secret key from the virtual currency wallet,
When there is a virtual currency transaction instruction, a transaction process is performed, and a virtual currency address, a public key, a secret key, and other transactions, which are authentication information, are transmitted from the virtual currency wallet via a virtual currency transmission system provided with communication means. Send the information to the user terminal of the user receiving the remittance,
The user terminal receiving the remittance receives the transaction information and authentication information, restores the original secret key from the divided tally character string stored in multiple servers, and performs the transaction processing. A virtual currency trading system using virtual currency. A user terminal of a user who is a remitter used in the virtual currency transaction system using the virtual currency according to claim 1 or 2,
In response to the transfer of the virtual currency wallet appreciation, a virtual currency wallet is formed, a secret key composed of a character string of the user who is the sender is generated, and when a virtual currency transaction is applied by the sender, the virtual currency is applied. In the currency wallet, set transaction information including transactions and authentication information including virtual currency address, public key, secret key and other transaction information, divide the secret key into bits and convert it to bit unit secret key, A plurality of division tally strings are generated by performing division processing, and the generated plurality of division tally strings are divided and stored in a plurality of servers, respectively, and the secret key is deleted from the virtual currency wallet. The user, who is the remitter used in the virtual currency transaction system using virtual currency, which is characterized by User terminal. A support system for a virtual currency trading system that provides a virtual currency wallet application adopted in the virtual currency trading system according to claim 1,
Set transaction information including transactions and authentication information including virtual currency address, public key, secret key and other transaction information, divide the secret key into bit units and convert them into bit unit secret keys, and perform tally division processing Generating a plurality of division tally strings, dividing the generated plurality of tally strings into a plurality of servers, storing the divided tally strings, and managing a secret key for deleting the secret key from the virtual currency wallet. When a virtual currency wallet application is formed and the virtual currency wallet application is transferred to the user terminal of the remitter user, the virtual currency wallet is transferred to the user terminal of the remitter user. Cryptocurrency wallet appreciation adopted in cryptocurrency trading system characterized by forming Support system of virtual currency trading system to provide. A support system for a virtual currency trading system that provides a virtual currency wallet application adopted in the virtual currency trading system according to claim 4.
When relocating the virtual currency wallet appreciation to the sender terminal, the virtual currency wallet appreciation can be relocated even if it is either a software type virtual currency wallet or a hardware type virtual currency wallet. A cryptocurrency trading system support system that provides a virtual currency wallet application adopted in a virtual currency trading system. The virtual currency wallet that stores transaction information and authentication information receives the remittance user terminal and the remittance user terminal with the virtual currency wallet application formed on the remittance user terminal and remittance destination terminal. In a virtual currency trading method by a virtual currency trading system using a virtual currency comprising a user terminal on the user side and a virtual currency trading system including a communication exchange means for connecting these terminals,
When the user terminal of the user who is the remitter receives the transfer of the virtual currency wallet application and the user who is the remitter applies for the virtual currency transaction, the user terminal of the remitter is used. In the virtual currency wallet of the user terminal, a transaction as transaction information and a virtual currency address as authentication information, a public key, a secret key and other transaction information are set, and the secret key is divided into bit units and a bit unit secret key is set. To generate a plurality of divided tally character strings by performing tally division processing, dividing and storing the generated plurality of divided tally character strings in a plurality of servers, respectively, and storing the secret key from the virtual currency wallet. The secret key to be erased is managed, and when there is a virtual currency transaction instruction, transaction processing is performed and the virtual currency wallet is executed. Through the virtual currency transmission systems with al communication transfer means, send an authentication information virtual currency address, public key, private key, and other transaction information, the user side that receives the remittance to the user terminal,
A virtual terminal characterized in that the user terminal of the user receiving the remittance receives the authentication information, restores the original secret key from the divided tally character string stored in multiple servers, and performs transaction processing. A virtual currency trading method using a virtual currency trading system using currencies. A user terminal on the remittance side that has a database and has a virtual currency wallet that stores transaction information and authentication information, a user terminal on the user side that is the remitter, and a virtual currency wallet application on the remittee destination terminal. And a user terminal on the side of the user receiving the remittance, and a virtual currency trading method using a virtual currency trading system using a virtual currency trading system comprising a communication system for communicating and connecting these terminals,
When the user terminal of the user who is the remitter receives the transfer of the virtual currency wallet application and the user who is the remitter applies for the virtual currency transaction, the user terminal of the remitter is used. In the virtual currency wallet of the user terminal, a transaction as transaction information and a virtual currency address as authentication information, a public key, a secret key and other transaction information are set, and the secret key is divided into bit units and a bit unit secret key is set. Is converted to a tally splitting process to generate a plurality of split tally character strings, and the generated split tally character strings are divided and stored in a plurality of servers, respectively.
Tally division of transaction information and authentication information other than the secret key is made as division tally information, and divided and stored in a plurality of servers, respectively.
Manages a secret key to erase transaction information and authentication information including the secret key from the virtual currency wallet,
When there is a virtual currency transaction instruction, a transaction process is performed, and a virtual currency address, a public key, a secret key, and other authentication information, which are authentication information, are transmitted from the virtual currency wallet via the virtual currency transmission system equipped with communication means. The necessary information (that is, other user identification information) to the user terminal of the user receiving the remittance,
The user terminal receiving the remittance receives the transaction information and authentication information, restores the original secret key from the divided tally character string stored in multiple servers, and performs the transaction processing. A virtual currency trading method using a virtual currency trading system using virtual currency.

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