CN117495373A - Block chain-based offline payment method and device - Google Patents
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Abstract
The invention provides a blockchain-based offline payment method and device, wherein the method comprises the steps of constructing an offline payment management contract on a blockchain, and constructing an offline transaction channel by two transaction nodes through the offline payment management contract; after receiving the transaction request, the off-line channel runs an off-line channel contract, reads the data of the current off-line account book, verifies the initial asset state of the transaction node, and performs signature verification on the transaction to finish off-line transaction; the channel contract submits the offline account book to the blockchain, the blockchain carries out consensus on account book data, and then the account book data is transferred to corresponding accounts of the blockchain according to the asset quantity of both transaction sides in the offline account book. Compared with the related art, the block chain-based offline payment method and device provided by the invention can effectively improve transaction efficiency, protect transaction privacy and ensure the safety of the assets of both transaction parties.
Description
Technical Field
The invention relates to the technical field of blockchain, in particular to an offline payment method and device based on blockchain.
Background
The existing payment means mainly adopts third parties such as visa and payment treasures to provide services, personal information is completely held by the third parties, and is influenced by Internet openness, sharability, collaboration and the like, and a third party payment platform is easy to expose information of customers during payment.
At the same time, network viruses are very complex at present, which also increases the risk of third party payments. For example, some hackers can invade a user computer to steal a bank card number and a password, or directly intercept transaction information, and the like, so that the problem of information leakage is easily caused.
The transaction mode based on the lightning network, which is proposed by the patent CN201910257369.3, is accessed into the lightning network through a side chain, and the transaction asset is managed in a hosting mode or a alliance mode, so that the system is too close to centralization, a hosting mechanism is required to provide a sufficient trust endorsement, and the design of a blockchain is violated.
The transaction method based on the lightning network channel proposed by the patent CN202110310293.3 generates the payment path by creating the channel connecting the two users, but the created channel requires the routing node to transmit the transaction, which increases the complexity and time-consuming performance of the transaction.
Therefore, there is a need for a new offline payment method and device based on blockchain to overcome the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to provide a novel block chain-based offline payment method and device, which can effectively improve transaction efficiency, protect transaction privacy and ensure the safety of assets of both transaction parties.
In order to achieve the above object, the present invention provides a blockchain-based offline payment method, comprising:
an offline payment management contract is constructed on the blockchain, and both transaction node sides construct an offline transaction channel through the offline payment management contract;
after receiving the transaction request, the off-line channel runs an off-line channel contract, reads the data of the current off-line account book, verifies the initial asset state of the transaction node, and performs signature verification on the transaction to finish off-line transaction;
the channel contract submits the offline account book to the blockchain, the blockchain carries out consensus on account book data, and then the account book data is transferred to corresponding accounts of the blockchain according to the asset quantity of both transaction sides in the offline account book.
The invention also provides an offline payment device based on the blockchain, which comprises the following steps:
the offline payment management contract module is stored in the blockchain system and is used for managing transaction information of both transaction parties and issuing an offline account book;
the offline channel module is used for managing and verifying the intelligent contract of the transaction passing through the offline channel, is connected with the blockchain system, associates offline account book data of the offline two parties and issues the offline account book data into the blockchain network;
and the blockchain system is used for registering the two parties of the transaction, storing the transaction and checking the transaction.
The present invention also provides a computer readable storage medium storing a computer program which when executed by a processor implements the steps of the blockchain-based offline payment method.
The invention also provides a computer terminal comprising a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor realizes the steps of the block chain-based offline payment method when executing the computer program.
Compared with the related art, the invention ensures the integrity and the non-counterfeitability of the payment data by utilizing the encryption technology and the digital signature technology of the blockchain; the provided offline payment means uses encryption and digital signature technologies of a blockchain technology, so that the safety and reliability of user payment are ensured; and a bidirectional offline channel is constructed through the P2P network, so that quick, safe and private transaction is realized, the efficiency and the safety of the transaction are improved, and the privacy of a user is also protected.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a block chain based offline payment method of the present invention;
FIG. 2 is a flow chart of a node offline payment channel based on a blockchain offline payment method of the present invention;
FIG. 3 is a block chain based offline ledger structure diagram of the present invention;
FIG. 4 is a block chain offline payment method-based offline transaction request tranReq structure diagram of the present invention;
FIG. 5 is a block chain based offline transaction flowchart of the present invention;
FIG. 6 is a flow chart of closing off-line channel ending transaction based on blockchain off-line payment method of the present invention.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention designs an offline payment method and system based on a blockchain. The method can transfer the complex transaction processing flow on the blockchain off line, so that the node can transfer the transaction asset under the condition of not accessing the blockchain system, and the node can finish the final confirmation of the asset by only initiating a final update request on the blockchain after the final result is confirmed, thereby realizing the rapidness, high efficiency, safety and reliability of the blockchain transaction.
The following is a specific description of the embodiments.
Offline payment channel structure of transaction node such as Error-! Reference source not the connection between the transaction node initiator A and the transaction node partner node B is established via an offline channel, referred to as node A and node B. The transactions of both sides are managed and verified through intelligent contracts of off-line channels, the channels are connected with a blockchain system, off-line account book data of both off-line sides are associated, when the off-line channels are established by both sides, the blockchain system issues the off-line account book and verifies initial data, when the channels are closed, whether the transactions are finished or not is verified in advance through the intelligent contracts of the off-line channels, then the blockchain system verifies the off-line account book data, and finally the data are subjected to the uplink operation.
S1, an offline payment management contract is built on a blockchain, and both transaction node sides build an offline transaction channel through the offline payment management contract.
Specific procedure is as follows! Reference source not the application for offline transaction with node B is submitted by the initiator node a to the offline payment management contract of the blockchain, and the node B also initiates the application for permission, and the blockchain system performs authentication on the two nodes after receiving the application from node A, B, and invokes the offline payment management contract to create the offline channel of node A, B and perform related operations.
All nodes must register on the blockchain system before a transfer transaction is made and the nodes are available. When two nodes are to conduct offline transaction, firstly, the states of the two parties during the transaction are confirmed, and the method comprises the following specific steps.
Step 1. Two nodes A and B initiate application to the blockchain under the condition that both sides are online, an offline channel is created, the channel exists in the form of an offline channel contract, the following data is recorded in the contract, and the following data is called offline ledger, such as Error-! Reference source not found:
account address of node: for node authentication and return of the final asset.
Number of transfer assets: A. total amount of assets that two nodes B can transact in the channel.
The number of the ensured gold: the method is used for performing credit mortgage, guaranteeing the integrity of offline transaction of the nodes, and guaranteeing the higher the more assets are transferred and the higher the deposit is.
Latest state hash: the method is used for recording the current distribution condition of the resources in the account book.
The two parties generate an offline account book in an initial state and carry out signature confirmation on the offline account book. An offline ledger is a data structure used by both parties in offline transactions that records the asset allocation of both parties, as well as the details and signature of each transaction. The initial state of the offline ledger is the initial allocation of the two-party transfer asset. The offline channel contract has a signature function and is used for signature verification when both transaction sides conduct transactions, the contract signature only has an effect when the channel exists, and the contract signature is destroyed simultaneously along with the destruction of the channel.
S2, after receiving the transaction request, the off-line channel runs the off-line channel contract, reads the data of the current off-line account book, verifies the initial asset state of the transaction node, and performs signature verification on the transaction to finish off-line transaction.
And 2, when the two nodes A and B conduct transactions, the two nodes A and B are a reassignment process of the assets in the offline ledger. For example, when node A initiates a transfer to node B, node A will first initiate a transfer request tranReq to the offline channel, with a specific request structure such as Error-! Reference source not found. Upon creation of the request, node a writes the transfer amount in the request and signature validates the balance of the initiator, initial (meaning not before transfer), node B in the request. The initiator and the receiver are mainly used for defining the transfer direction of the asset.
And 3, after receiving the request of the node A, the off-line channel runs an off-line channel contract, the channel contract reads the data of the current off-line account book, verifies the initial asset state of the node A, B, signs the transfer amount and forwards tranReq to the node B.
And 4, after receiving the tranReq, the node B verifies the signature identity of the node A and the signature of the off-line channel, confirms the number of asset transactions, and returns the signature to the transfer confirmation state. If not, not signing and returning to the offline channel; if yes, the balance of the initial node A and the receiver are signed and confirmed, and the request is submitted to the channel.
Step 5, checking the request returned by the node B by the channel closing date, if the request fails, keeping the current account state unchanged, and informing the node A that the request fails; if yes, the offline ledger is updated, the transaction request is written into the tranList, and the ledger is broadcast to the node A, B for synchronization. Thus, an offline transaction is performed. When the user initiates the transaction again, the steps 2-5 are repeated.
S3, submitting the offline account book to the blockchain by the channel contract, consensus the account book data by the blockchain, and transferring the account book data to the corresponding account of the blockchain according to the asset number of the two transaction parties in the offline account book.
And 6, when the users of the two parties decide to finish the offline transaction, only one party submits a transaction termination request to the channel contract, the channel closing date firstly checks the current offline account state, detects whether the transaction is still in the process, waits for the transaction to finish if the transaction is not finished, and otherwise enters a termination stage. The channel contract sends an offline transaction request to the blockchain system, an offline account book is submitted to the blockchain, the blockchain can carry out consensus on account book data, and after completion, the account book is transferred to an account corresponding to the blockchain according to the asset quantity of both sides in the account book. Informing about destroying the offline channel, such as Error-! Reference source not found. When both parties want to transact again, then the offline channel needs to be recreated.
Compared with the related art, the invention has the following beneficial effects: the invention uses the characteristics of the blockchain system, eliminates the limitation of relying on a third party supervision mechanism in the traditional transaction mode, realizes the decentralized cooperation among transaction participants, the real-time sharing and synchronous updating of data, and effectively avoids the risk of data loss or inconsistency caused by single node failure or data tampering, thereby enhancing the safety and stability of the system.
The invention adopts the offline transaction technology, so that the two nodes of the transaction can construct a bidirectional offline channel to conduct the transaction through the P2P network under the condition of not accessing the blockchain network. The two parties of the transaction do not need to show specific transaction details to any third party, and only the final asset state is linked up when the final transaction is finished, so that the transaction efficiency is improved and the transaction privacy is protected.
The invention adopts the offline account book, and can realize that the user can safely transfer the funds on the chain to offline under the condition of not connecting with the network. In order to ensure the authenticity, accuracy and non-tamper property of the initial account book data, the invention adopts a 2of2 signature technology, namely, the common signature of two signature parties (node users) is required to be effective after each off-line transaction is initiated, thereby preventing the possibility of unilaterally modifying or forging the data by any party.
The offline transaction request structure adopted by the invention introduces a contract signature scheme on the basis of the signatures of both sides, and performs multiple verification on the transaction request. The transaction request not only needs the common signature of both transaction parties, but also needs the signature of the contract party, thereby ensuring the accuracy and the authenticity of the transaction data, preventing any party or third party from falsifying or forging the data, and ensuring the safety of the user assets of both transaction parties.
A model was operated for the system of the present invention.
The system comprises an offline payment management contract module, a transaction management module and a transaction management module, wherein the offline payment management contract module is stored in a blockchain system and is used for managing transaction information of both transaction parties and issuing an offline account book;
the offline channel module is used for managing and verifying the intelligent contract of the transaction passing through the offline channel, is connected with the blockchain system, associates offline account book data of the offline two parties and issues the offline account book data into the blockchain network;
and the blockchain system is used for registering the two parties of the transaction, storing the transaction and checking the transaction.
Compared with the related art, the offline payment method and method based on the blockchain, disclosed by the invention, ensure the integrity and the non-counterfeitability of the payment data by utilizing the encryption technology and the digital signature technology of the blockchain. By the method, the user can complete the payment service without connecting with a network, so that the payment flow is simplified, and the payment efficiency and the user experience are improved.
The offline payment means provided by the invention uses encryption and digital signature technologies of a blockchain technology, and the application of the technology ensures that payment data has extremely high security and credibility and cannot be forged or tampered, thereby ensuring the security and reliability of user payment.
The unique node transaction means adopted by the invention can realize the transaction function in the peer-to-peer state. Two parties can construct a bidirectional offline channel through a P2P network, so that quick, safe and private transaction is realized. The application of the method solves the problems such as network connection, transaction speed, privacy disclosure and the like existing in the blockchain network.
The node transaction means and the off-line payment method break through some limitations and constraints in the traditional blockchain technology, and further expand the application range of the blockchain technology. The application of the node transaction means not only improves the transaction efficiency and security, but also protects the privacy of the user, and provides more perfect blockchain technical experience for the user.
In another aspect, the present invention also provides a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the blockchain-based offline payment method described above.
An extension of another aspect of the present invention also provides a computer terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the blockchain-based offline payment method described above when the computer program is executed.
The processor, when executing the computer program, performs the functions of the modules/units in the above-described device embodiments. The computer program may be divided into one or more modules/units, which are stored in the memory and executed by the processor to accomplish the present invention, for example. The one or more modules/units may be a series of computer program instruction segments capable of performing the specified functions, which instruction segments are used for describing the execution of the computer program in the terminal device.
The computer terminal can be a desktop computer, a notebook computer, a palm computer, a cloud server and other computing devices. May include, but is not limited to, a processor, memory. More or fewer components may be included or certain components may be combined, or different components may be included, for example, in input and output devices, network access devices, buses, etc.
The processor may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may be an internal storage unit, such as a hard disk or a memory. The memory may also be an external storage device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card, etc. Further, the memory may also include both internal storage units and external storage devices. The memory is used for storing the computer program and other programs and data. The memory may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other manners. For example, the apparatus/terminal device embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical function division, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium contains content that can be appropriately scaled according to the requirements of jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is subject to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (7)
1. A blockchain-based offline payment method, comprising:
an offline payment management contract is constructed on the blockchain, and both transaction node sides construct an offline transaction channel through the offline payment management contract;
after receiving the transaction request, the off-line channel runs an off-line channel contract, reads the data of the current off-line account book, verifies the initial asset state of the transaction node, and performs signature verification on the transaction to finish off-line transaction;
the channel contract submits the offline account book to the blockchain, the blockchain carries out consensus on account book data, and then the account book data is transferred to corresponding accounts of the blockchain according to the asset quantity of both transaction sides in the offline account book.
2. The blockchain-based offline payment method of claim 1, wherein the constructing an offline payment management contract on the blockchain, the two transaction nodes constructing an offline transaction channel through the offline payment management contract, comprises:
submitting an offline transaction application to the other party of the transaction node by the offline payment management contract of the block chain of the transaction node;
the blockchain system performs identity verification on both sides of the transaction node after receiving the application, and invokes the offline payment management contract to create an offline channel of the transaction;
and generating an offline account book in an initial state by the transaction node and the transaction node through the offline channel, and carrying out signature confirmation on the offline account book.
3. The blockchain-based offline payment method of claim 2, wherein the offline channel running an offline channel contract after receiving the transaction request, reading data of a current offline ledger, verifying an initial asset state of a transaction node, and signature verification of the transaction to complete the offline transaction comprises:
the transaction node initiates a transaction request tranReq to the offline channel, and performs signature confirmation on the request;
after the request of the transaction node initiator, the off-line channel contract is operated, the channel contract reads the data of the current off-line account book, the initial asset states of the two parties of the transaction node are checked, and the transaction is signed and then the tranReq is forwarded to the transaction node butting party;
after the receiver receives the tranReq, the transaction node verifies the signature identity of the transaction node initiator and the signature of the off-line channel, confirms the number of asset transactions, and returns the signature to the transfer confirmation state;
and the channel closing date checks the request returned by the transaction node butt joint party, writes the transaction request into the TranList, and synchronously broadcasts the account book to both sides of the transaction node.
4. The blockchain-based offline payment method of claim 3, wherein the channel contract submits the offline ledger to the blockchain, the blockchain agrees with ledger data, and then transfers to the blockchain corresponding account according to the number of assets of both sides of the transaction in the offline ledger, comprising:
the offline channel contract firstly checks the current offline account state and detects whether a transaction flow exists or not;
the offline channel contract sends an offline transaction request to the blockchain, an offline account book is submitted to the blockchain, the blockchain can carry out consensus on account book data, and the account book data is transferred to an account corresponding to the blockchain according to the number of assets of both sides in the account book;
the blockchain notifies the offline payment management contract to destroy the offline channels of both parties to the transaction.
5. An apparatus for applying the blockchain-based offline payment method of any of claims 1-4, the apparatus comprising:
the offline payment management contract module is stored in the blockchain system and is used for managing transaction information of both transaction parties and issuing an offline account book;
the offline channel module is used for managing and verifying the intelligent contract of the transaction passing through the offline channel, is connected with the blockchain system, associates offline account book data of the offline two parties and issues the offline account book data into the blockchain network;
and the blockchain system is used for registering the two parties of the transaction, storing the transaction and checking the transaction.
6. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the steps of the blockchain-based offline payment method of any of claims 1 to 4.
7. A computer terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the blockchain-based offline payment method according to any of claims 1 to 4 when the computer program is executed.
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| CN117993911A (en) * | 2024-04-03 | 2024-05-07 | 湖南天河国云科技有限公司 | Block chain-based offline payment method, system and computer equipment |
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| CN117993911A (en) * | 2024-04-03 | 2024-05-07 | 湖南天河国云科技有限公司 | Block chain-based offline payment method, system and computer equipment |
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