TWI762010B - Method and system for trading of blockchain - Google Patents

Abstract

A method for trading of blockchain is provided. The method for trading of blockchain includes generating a trade request. The trade request includes an identify of an initiator of the trade, an identify of a receiver of the trade, an exchange of the trade, time of the trade, and a digital signature of the initiator of the trade. The method further includes transmitting the trade request to the receiver of the trade and verifying the trade request. If a verification is passed, the method signs a digital signature of the receiver of the trade on the trade request. The method further includes transferring the cash from the initiator of the trade to the receiver of the trade. A system for trading of blockchain is also provided. The method and the system are capable of preventing the receiver of the trade from colliding with malicious attack, for example a dust attack, or the like, and preventing admitting of the trade after finishing the trade.

Description

Blockchain transaction method and blockchain transaction system

The present invention relates to the technical field of blockchain, in particular to a blockchain transaction method and a blockchain transaction system.

At present, when conducting blockchain transactions, the transaction initiator can complete the transaction as long as he knows the address of the transaction receiver, without the transaction receiver participating. In this way, the transaction receiver may suffer from malicious attacks such as dust attacks, and at the same time, the transaction initiator and the transaction receiver may not recognize the execution of the transaction after the transaction.

In view of the above, it is necessary to provide a blockchain transaction method and blockchain transaction system, which can prevent the transaction recipient from being subjected to malicious attacks such as dust attacks, and prevent both parties from disapproving of the execution of the transaction after the transaction.

A blockchain transaction method, the blockchain transaction method includes:

generating a transaction request, the transaction request including the transaction initiator logo, the transaction receiver logo, the transaction amount, the transaction time and the digital signature of the transaction initiator;

transmit the transaction request to the transaction recipient;

verifying the transaction request;

If the verification is passed, sign the digital signature of the transaction recipient on the transaction request;

Transfer assets from the transaction originator to the transaction recipient.

Preferably, before generating the transaction request, the blockchain transaction method further includes:

Prepare transaction information in advance, the transaction information includes the logo of the transaction initiator, the logo of the transaction recipient, the transaction amount and the transaction time;

transmit the transaction information to the transaction initiator;

The generating a transaction request includes:

The transaction request is generated according to the transaction information.

Preferably, the blockchain transaction method further includes:

If the verification fails, the transaction is terminated.

Preferably, before the transfer of assets from the transaction initiator to the transaction receiver, the blockchain transaction method further includes:

Send a transaction request including the digital signature of the transaction initiator and the digital signature of the transaction recipient to the blockchain node;

Verifying the digital signature of the transaction initiator and the digital signature of the transaction recipient;

The transferring the asset from the transaction originator to the transaction recipient includes:

If the digital signature of the transaction initiator and the digital signature of the transaction recipient are verified, the asset is transferred from the transaction initiator to the transaction recipient.

Preferably, the blockchain transaction method further includes:

Consensus on the transfer of said assets;

If a consensus is reached on the transfer of the assets, the transfer of the assets will be uploaded to the blockchain.

A blockchain transaction system, the blockchain transaction system includes:

a transaction initiator terminal, used to generate a transaction request, the transaction request including the transaction initiator logo, the transaction receiver logo, the transaction amount, the transaction time and the digital signature of the transaction initiator;

The transaction initiator terminal is further configured to transmit the transaction request to the transaction receiver;

a transaction receiver terminal, used to verify the transaction request;

The transaction recipient terminal is further configured to sign the transaction recipient digital signature on the transaction request if the verification is passed;

The transaction initiator terminal is further configured to transfer assets from the transaction initiator to the transaction receiver.

Preferably, the transaction receiver terminal is further configured to prepare transaction information in advance before the transaction initiator terminal generates the transaction request, and the transaction information includes the transaction initiator logo, the transaction receiver logo, the transaction amount, and the transaction amount. transaction hour;

The transaction receiver terminal is further configured to transmit the transaction information to the transaction initiator;

The transaction initiator terminal is further configured to generate the transaction request according to the transaction information.

Preferably, the transaction receiver terminal is further configured to terminate the transaction if the verification fails.

Preferably, the blockchain transaction system further includes a blockchain node: the transaction recipient terminal is further configured to transmit the assets including the The transaction request with the digital signature of the transaction initiator and the digital signature of the transaction recipient to the blockchain node;

The blockchain node is used to verify the digital signature of the transaction initiator and the digital signature of the transaction recipient;

The transaction initiator terminal is further configured to transfer the asset from the transaction initiator to the transaction receiver if the verification of the transaction initiator's digital signature and the transaction receiver's digital signature passes.

Preferably, the blockchain node is also used for consensus on the transfer of the asset;

The blockchain node is also used to upload the transfer of the asset to the blockchain if a consensus is reached on the transfer of the asset.

In this case, the transaction request includes the digital signature of the transaction initiator, the transaction recipient verifies the transaction request, and when the verification is passed, the transaction recipient digitally signs the transaction request, which can prevent the transaction recipient from encountering dust attacks. and other malicious attacks, and to avoid the two parties from disapproving of the execution of the transaction after the transaction.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIGS. 1-2 , a blockchain transaction system 1 includes a transaction initiator terminal 10 , a transaction receiver terminal 20 and a blockchain node 30 . The transaction initiator terminal 10 and the transaction receiver terminal 20 may be electronic devices such as smart phones, tablet computers, and laptop computers. The transaction initiator terminal 10, the transaction receiver terminal 20 and the blockchain node 30 can communicate with each other. Wherein, the transaction initiator terminal 10, the transaction receiver terminal 20 and the blockchain node 30 can communicate with each other by wired or wireless means. specifically:

The transaction initiator terminal 10 is used to generate a transaction request. The transaction request includes the transaction initiator logo, the transaction receiver logo, the transaction amount, the transaction time and the digital signature of the transaction initiator. The transaction initiator terminal 10 is further configured to transmit the transaction request to the transaction recipient. The transaction receiver terminal 20 is used to verify the transaction request. The transaction receiver terminal 20 is further configured to sign the transaction receiver's digital signature on the transaction request if the verification is passed. The transaction originator terminal 10 is also used to transfer assets from the transaction originator to the transaction recipient.

In this embodiment, a user terminal is installed on the transaction initiator terminal 10 , the transaction receiver terminal 20 and the blockchain node 30 . The transaction initiator terminal 10, the transaction receiver terminal 20 and the blockchain node 30 can access the blockchain through the user terminal, and then operate the blockchain application.

In this embodiment, the identifier of the transaction initiator is a unique identifier representing the transaction initiator, such as a client identifier, a public key, and the like. The transaction initiator identification is used to identify the transaction initiator. The transaction recipient identifier is a unique identification code representing the transaction recipient, such as a client identifier, a public key, and the like. The transaction recipient identifier is used to identify the transaction recipient. The transaction time includes the time when the transaction was initiated. The digital signature of the transaction initiator is used to authenticate the transaction initiator. In this embodiment, the transaction request not only includes the above-mentioned transaction initiator logo, transaction receiver logo, transaction amount, transaction time and digital signature of the transaction initiator, but also other information, such as the request serial number, time limit , security code, remarks, verification code, etc. The serial number of the request is the unique identification code of the transaction. The sequence numbers of the requests are used to represent different transactions. The limitation period is used to limit the time frame within which the transaction can be completed. The security code is used to verify the identity of the transaction initiator together with the digital signature of the transaction initiator, which plays a role of double verification. The remarks are used to assist the recipient of the transaction in understanding the transaction. The verification code is a one-time password used to verify that the transaction initiator is a legitimate user in the blockchain.

In this embodiment, the transaction initiator terminal 10 can receive the input transaction content through the user terminal, and generate the transaction request according to the transaction content and the format specification of the transaction request. Wherein, the format specification of the transaction request indicates the format requirements required by the transaction content. For example, the format specification of the transaction request includes the transaction initiator logo, the transaction receiver logo and the transaction amount, then the transaction content requires There are the transaction initiator logo, the transaction receiver logo and the transaction amount. The transaction originator terminal 10 may transmit the transaction request to the transaction receiver terminal 20 through the user terminal.

In this embodiment, the transaction receiver terminal 20 is used to verify the transaction request, including automatic verification and manual verification. The automatic verification includes that the transaction receiver terminal 20 decrypts the transaction request through the user terminal, verifies the digital signature of the transaction initiator, verifies that the format of the transaction request complies with the format specification, and The above transaction amount confirms the ownership of the assets of the transaction initiator. The manual verification includes that the transaction recipient terminal 20 displays the content of the transaction request through the user terminal, so that the transaction recipient can determine whether the content of the transaction request is incorrect. In this embodiment, the transaction receiver terminal 20 further provides a verification pass option and a verification fail option through the user terminal, so that the transaction receiver can determine whether the content of the transaction request is incorrect. Wherein, if the automatic verification fails, the transaction recipient terminal 20 provides a verification failure option through the user terminal for the transaction recipient to select, or automatically determines that the verification fails. Obviously, if the verification pass option is selected, the transaction recipient terminal 20 determines that the verification is passed, and if the verification fail option is selected, the transaction recipient terminal 20 determines that the verification fails. In this embodiment, if the verification fails, the transaction is terminated.

In this embodiment, the transaction receiver terminal 20 is further configured to transmit the transaction including the digital signature of the transaction initiator and the transaction before transferring the assets from the transaction initiator to the transaction receiver. The transaction request digitally signed by the receiver is sent to the blockchain node. The blockchain node 30 is further configured to verify the digital signature of the transaction initiator and the digital signature of the transaction recipient. The number of the blockchain nodes 30 is multiple. The transaction initiator terminal 10 is further configured to transfer the asset from the transaction initiator to the transaction receiver if the verification of the transaction initiator's digital signature and the transaction receiver's digital signature passes.

In this embodiment, the blockchain node 30 is further configured to verify the digital signature of the transaction initiator, the digital signature of the transaction recipient and the format of the transaction request. The transaction initiator terminal 10 is further configured to transfer the asset from the transaction initiator if the digital signature of the transaction initiator, the digital signature of the transaction recipient and the format verification of the transaction request are passed. to the transaction recipient.

In this embodiment, the blockchain node 30 is also used for consensus on the transfer of the assets. The blockchain node 30 is further configured to upload the transfer of the asset to the blockchain if a consensus is reached on the transfer of the asset.

In this embodiment, the transaction receiver terminal 20 is further configured to prepare transaction information in advance before the transaction initiator terminal 10 generates the transaction request. The transaction information includes the identifier of the transaction initiator, the identifier of the transaction recipient, the transaction amount, and the transaction time. The transaction receiver terminal 20 is also used for transmitting the transaction information to the transaction initiator. The transaction initiator terminal 10 is further configured to generate the transaction request according to the transaction information. In this embodiment, the transaction information not only includes the above-mentioned content, but also includes other content, such as a request serial number, time limit, security code, remarks, verification code, and the like. The transaction receiver terminal 20 is further configured to transmit the transaction information to the transaction initiator terminal 10 through the user terminal. Therefore, before executing the fund transfer, both the transaction originator and the transaction receiver can review the transaction content in advance, so as to avoid generating erroneous transaction content and prevent the interests of the transaction originator from being damaged.

In this case, the transaction request includes the digital signature of the transaction initiator, the transaction recipient verifies the transaction request, and when the verification is passed, the transaction recipient digitally signs the transaction request, which can prevent the transaction recipient from encountering dust attacks. and other malicious attacks, and to avoid the two parties from disapproving of the execution of the transaction after the transaction. In this case, before the transaction originator terminal 10 generates the transaction request, the transaction information is prepared in advance, and the transaction information is transmitted to the transaction originator. Before executing the fund transfer, the transaction originator Both the transaction recipient and the transaction recipient can review the transaction content in advance, so as to avoid the generation of erroneous transaction content and prevent the interests of the transaction initiator from being damaged.

Please refer to Figure 3, which is a flowchart of the blockchain transaction method. The blockchain transaction method includes:

S302: Generate a transaction request, where the transaction request includes a transaction initiator logo, a transaction receiver logo, a transaction amount, a transaction time, and a digital signature of the transaction initiator.

S304: Send the transaction request to the transaction recipient.

S306: Verify the transaction request.

S308: If the verification is passed, sign the digital signature of the transaction recipient on the transaction request.

S310: Transfer assets from the transaction initiator to the transaction receiver.

In this embodiment, before generating the transaction request, the blockchain transaction method further includes: pre-drawing transaction information, the transaction information including the transaction initiator logo, the transaction receiver logo, the transaction amount and the transaction time; The transaction information is sent to the transaction initiator. The generating a transaction request includes: generating the transaction request according to the transaction information.

In this embodiment, the blockchain transaction method further includes: if the verification fails, terminating the transaction.

In this embodiment, before the transfer of assets from the transaction originator to the transaction recipient, the blockchain transaction method further comprises: transmitting a digital signature including the transaction originator and the transaction The transaction request of the recipient's digital signature is sent to the blockchain node; the digital signature of the transaction initiator and the digital signature of the transaction recipient are verified. The transferring the asset from the transaction initiator to the transaction receiver includes: if the verification of the transaction initiator's digital signature and the transaction receiver's digital signature is passed, transferring the asset from the transaction initiator to the transaction initiator. transferred to the transaction recipient.

In this embodiment, the blockchain transaction method further includes: reaching a consensus on the transfer of the asset; if a consensus is reached on the transfer of the asset, uploading the transfer of the asset to the blockchain.

The blockchain transaction method can also have other different variants, and the embodiment of the variant of the blockchain transaction method is the same as the embodiment of the variant of the blockchain transaction system, and will not be repeated here.

Those with ordinary skill in the art should realize that the above embodiments are only used to illustrate the present application, rather than being used to limit the present application, as long as appropriate changes are made to the above embodiments within the spirit and scope of the present application and variations all fall within the scope of protection claimed in this application.

1: Blockchain transaction system 10: Transaction initiator terminal 20: Transaction receiver terminal 30: Blockchain Nodes S302: Generate a transaction request, the transaction request includes the transaction initiator logo, the transaction receiver logo, the transaction amount, the transaction time and the digital signature of the transaction initiator S304: Send the transaction request to the transaction recipient S306: Verify the transaction request S308: If the verification is passed, sign the digital signature of the transaction recipient on the transaction request S310: Transfer assets from the transaction initiator to the transaction receiver

FIG. 1 is a schematic block diagram of a blockchain transaction system according to a preferred embodiment of the present invention. FIG. 2 is a schematic diagram of the communication between the transaction initiator terminal, the transaction receiver terminal and the blockchain node in FIG. 1 . FIG. 3 is a flowchart of a blockchain transaction method according to a preferred embodiment of the present invention.

none

S302: Generate a transaction request, the transaction request includes the transaction initiator logo, the transaction receiver logo, the transaction amount, the transaction time and the digital signature of the transaction initiator

S304: Send the transaction request to the transaction recipient

S306: Verify the transaction request

S308: If the verification is passed, sign the digital signature of the transaction recipient on the transaction request

S310: Transfer assets from the transaction initiator to the transaction receiver

Claims (10)

A blockchain transaction method, wherein the blockchain transaction method includes: generating a transaction request, the transaction request including the transaction initiator logo, the transaction receiver logo, the transaction amount, the transaction time and the digital signature of the transaction initiator; transmit the transaction request to the transaction recipient; verifying the transaction request; If the verification is passed, sign the digital signature of the transaction recipient on the transaction request; Transfer assets from the transaction originator to the transaction recipient. The blockchain transaction method as described in claim 1, wherein: Before generating the transaction request, the blockchain transaction method further includes: Prepare transaction information in advance, the transaction information includes the logo of the transaction initiator, the logo of the transaction recipient, the transaction amount and the transaction time; transmit the transaction information to the transaction initiator; The generating a transaction request includes: The transaction request is generated according to the transaction information. The blockchain transaction method according to claim 1, wherein the blockchain transaction method further comprises: If the verification fails, the transaction is terminated. The blockchain transaction method as described in claim 1, wherein: Before the transfer of assets from the transaction originator to the transaction recipient, the blockchain transaction method further includes: Send a transaction request including the digital signature of the transaction initiator and the digital signature of the transaction recipient to the blockchain node; Verifying the digital signature of the transaction initiator and the digital signature of the transaction recipient; The transferring the asset from the transaction originator to the transaction recipient includes: If the digital signature of the transaction initiator and the digital signature of the transaction recipient are verified, the asset is transferred from the transaction initiator to the transaction recipient. The blockchain transaction method according to claim 1, wherein the blockchain transaction method further comprises: Consensus on the transfer of said assets; If a consensus is reached on the transfer of the assets, the transfer of the assets will be uploaded to the blockchain. A blockchain transaction system, wherein the blockchain transaction system includes: a transaction initiator terminal, used to generate a transaction request, the transaction request including the transaction initiator logo, the transaction receiver logo, the transaction amount, the transaction time and the digital signature of the transaction initiator; The transaction initiator terminal is further configured to transmit the transaction request to the transaction receiver; a transaction receiver terminal, used to verify the transaction request; The transaction recipient terminal is further configured to sign the transaction recipient digital signature on the transaction request if the verification is passed; The transaction initiator terminal is further configured to transfer assets from the transaction initiator to the transaction receiver. The blockchain transaction system as described in claim 6, wherein: The transaction receiver terminal is further configured to prepare transaction information in advance before the transaction initiator terminal generates the transaction request, and the transaction information includes the transaction initiator logo, the transaction receiver logo, the transaction amount and the transaction time; The transaction receiver terminal is further configured to transmit the transaction information to the transaction initiator; The transaction initiator terminal is further configured to generate the transaction request according to the transaction information. The blockchain transaction system as described in claim 6, wherein: The transaction receiver terminal is further configured to terminate the transaction if the verification fails. The blockchain transaction system according to claim 6, wherein the blockchain transaction system further includes a blockchain node: The transaction recipient terminal is further configured to transmit a transaction including the digital signature of the transaction initiator and the digital signature of the transaction recipient before the transfer of assets from the transaction initiator to the transaction recipient request to the blockchain node; The blockchain node is used to verify the digital signature of the transaction initiator and the digital signature of the transaction recipient; The transaction initiator terminal is further configured to transfer the asset from the transaction initiator to the transaction receiver if the verification of the transaction initiator's digital signature and the transaction receiver's digital signature passes. The blockchain transaction system as claimed in claim 9, wherein: The blockchain node is also used for consensus on the transfer of the asset; The blockchain node is also used to upload the transfer of the asset to the blockchain if a consensus is reached on the transfer of the asset.

Images