CN111181968A - Cross-block chain communication method and device, cross-chain service system and cross-chain transaction system - Google Patents
Cross-block chain communication method and device, cross-chain service system and cross-chain transaction system Download PDFInfo
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- CN111181968A CN111181968A CN201911403803.0A CN201911403803A CN111181968A CN 111181968 A CN111181968 A CN 111181968A CN 201911403803 A CN201911403803 A CN 201911403803A CN 111181968 A CN111181968 A CN 111181968A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0227—Filtering policies
- H04L63/0236—Filtering by address, protocol, port number or service, e.g. IP-address or URL
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees
Abstract
The application provides a cross-block chain communication method, a device, a cross-chain service system and a cross-chain transaction system, relates to the technical field of block chains, and solves the technical problem that different block chain networks are difficult to communicate with each other. The method comprises the following steps: acquiring first transaction information of monitored cross-chain transactions from a source blockchain network, wherein the cross-chain transactions are transactions between the source blockchain network and a target blockchain network, and the first transaction information comprises: the cross-chain transaction data; sending second transaction information to the target blockchain network based on the cross-chain transaction data, the second transaction information comprising: the cross-chain transaction data; acquiring an execution result of the monitored execution end of the second transaction information from the target blockchain network; and sending indication information to the source blockchain network based on the execution result, wherein the indication information is used for indicating that the cross-chain transaction is ended.
Description
Technical Field
The present application relates to the field of blockchain technologies, and in particular, to a method and an apparatus for cross-blockchain communication, a cross-chain service system, and a cross-chain transaction system.
Background
The blockchain is a distributed account book shared on the whole service network, is the bottom technology of bitcoin, is similar to a database account book, records all transaction records, and is essentially a decentralized database. Blockchain technology provides a way to record transactions and digital interactions.
The blockchain network is formed by interconnecting node machines which are distributed at different places and have a plurality of terminals. Any node in the blockchain network is connected with at least two links, so that different nodes in the blockchain network can communicate with each other.
However, it is difficult to communicate with each other between different blockchain networks, for example, communication between alliance chains of different alliances cannot be performed, which causes inconvenience to an application process of the blockchain, and thus affects the use efficiency of the blockchain.
Disclosure of Invention
The invention aims to provide a cross-block chain communication method, a device, a cross-chain service system and a cross-chain transaction system, so as to solve the technical problem that different block chain networks are difficult to communicate with each other.
In a first aspect, an embodiment of the present application provides a method for inter-block chain communication, where the method includes: acquiring first transaction information of monitored cross-chain transactions from a source blockchain network, wherein the cross-chain transactions are transactions between the source blockchain network and a target blockchain network, and the first transaction information comprises: data of the cross-chain transaction; sending second transaction information to the target blockchain network based on the cross-chain transaction data, the second transaction information comprising: the cross-chain transaction data; acquiring an execution result of the monitored execution end of the second transaction information from the target blockchain network; and sending indication information to the source blockchain network based on the execution result, wherein the indication information is used for indicating that the cross-chain transaction is ended.
In one possible implementation, the first transaction information is used to indicate the cross-chain transaction in the source blockchain network, the second transaction information is used to indicate the cross-chain transaction in the target blockchain network, and the first transaction information and the second transaction information are the same or different.
In one possible implementation, after the step of obtaining the monitored first transaction information of the cross-chain transaction from the source blockchain network, the method further includes: judging whether the transaction is allowed between the source block chain network and the target block chain network or not based on the source block chain network, the target block chain network and a preset cross-chain communication white list; and if so, determining that the cross-link transaction is legal data.
In one possible implementation, after the step of obtaining the monitored first transaction information of the cross-chain transaction from the source blockchain network, the method further includes: judging whether the content of the cross-link transaction data accords with a preset cross-link communication protocol rule or not; and if so, determining that the cross-chain transaction data is valid data.
In one possible implementation, after the step of obtaining the monitored first transaction information of the cross-chain transaction from the source blockchain network, the method further includes: checking whether a consensus mechanism corresponding to the source block chain network and a consensus mechanism corresponding to the target block chain network accord with a preset cross-chain consensus rule or not; and if so, forming a chain-crossing service consensus between the source block chain network and the target block chain network.
In one possible implementation, before the step of sending the second transaction information to the target blockchain network based on the cross-chain transaction data, the method further includes: and determining that the cross-chain service consensus is formed, and the cross-chain transaction data are legal data and valid data.
In one possible implementation, after the step of obtaining the monitored execution result of the execution end of the second transaction information from the target blockchain network, the method includes: checking whether the execution result conforms to the cross-chain service consensus; and if so, determining that the execution result of the second transaction information is successful.
In one possible implementation, the method further includes: and forming a tree structure for recording the cross-chain transaction data by using data structures corresponding to the source block chain network and the target block chain network.
In a second aspect, there is provided a cross-blockchain communication apparatus, the apparatus comprising: a first obtaining module, configured to obtain, from a source blockchain network, monitored first transaction information of a cross-chain transaction, where the cross-chain transaction is a transaction between the source blockchain network and a target blockchain network, and the first transaction information includes: data of the cross-chain transaction; a sending module, configured to send second transaction information to the target blockchain network based on the cross-chain transaction data, where the second transaction information includes: the cross-chain transaction data; a second obtaining module, configured to obtain, from the target blockchain network, an execution result of execution completion of the monitored second transaction information; the sending module is further configured to send, to the source blockchain network, indication information based on the execution result, where the indication information is used to indicate that the cross-chain transaction is ended.
In a third aspect, a cross-chain service device is provided, which includes a memory and a processor, where the memory stores a computer program that is executable on the processor, and the processor implements the steps of the method according to the first aspect when executing the computer program.
In a fourth aspect, a cross-chain service system is provided, the system comprising: comprising a plurality of executive service nodes, the executive service nodes configured to: acquiring first transaction information of monitored cross-chain transactions from a source blockchain network, wherein the cross-chain transactions are transactions between the source blockchain network and a target blockchain network, and the first transaction information comprises: data of the cross-chain transaction; sending second transaction information to the target blockchain network based on the cross-chain transaction data, the second transaction information comprising: the cross-chain transaction data; acquiring an execution result of the monitored execution end of the second transaction information from the target blockchain network; and sending indication information to the source blockchain network based on the execution result, wherein the indication information is used for indicating that the cross-chain transaction is ended.
In one possible implementation, the system further comprises a central service node, a routing service node and a gateway service node;
the central service node is used for verifying whether a consensus mechanism corresponding to the source block chain network and a consensus mechanism corresponding to the target block chain network accord with a preset cross-chain consensus rule or not, and if so, forming a cross-chain service consensus between the source block chain network and the target block chain network;
the gateway service node is used for judging whether the content of the cross-link transaction data accords with a preset cross-link communication protocol rule, and if so, determining the cross-link transaction data as valid data;
the routing service node is used for judging whether the transaction is allowed between the source block chain network and the target block chain network based on the source block chain network, the target block chain network and a preset cross-chain communication white list; and if so, determining that the cross-link transaction is legal data.
In a fifth aspect, an embodiment of the present application further provides a cross-chain transaction system, which includes a target blockchain network, a source blockchain network, and the cross-chain service system described in the fourth aspect.
In a sixth aspect, this embodiment of the present application further provides a computer-readable storage medium storing machine executable instructions, which, when invoked and executed by a processor, cause the processor to perform the method of the first aspect.
The embodiment of the application brings the following beneficial effects: according to the cross-block chain communication method, the cross-chain communication device, the cross-chain service system and the cross-chain transaction system, monitored cross-chain transaction data can be obtained from a source block chain network, the cross-chain transaction data are transactions between the source block chain network and a target block chain network, then second transaction information including the cross-chain transaction data is sent to the target block chain network based on the cross-chain transaction data, then an execution result of the monitored cross-chain transaction data is obtained from the target block chain network, and then the execution result is sent to the source block chain network. In the scheme, data interaction between the block chain network and the block chain network is achieved by monitoring the block chain network, so that cross-block chain communication between different final block chain networks is achieved, and the technical problem that communication between different block chain networks is difficult to achieve is solved. Moreover, by monitoring the transaction states of the source block chain network and the target block chain network, the source block chain network and the target block chain network do not need to be modified, cross-chain transaction data between the source block chain network and the target block chain network can be directly acquired and transmitted, and a cross-chain transaction process with higher efficiency is realized.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic flowchart of a cross-blockchain communication method according to an embodiment of the present application;
fig. 2 is an exemplary diagram of a service transaction service in a cross-block chain communication method according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a cross-block-chain communication device according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram illustrating an electronic device provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram illustrating a cross-chain service system provided in an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "comprising" and "having," and any variations thereof, as referred to in the embodiments of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Currently, a similar relay system may be used to receive data from the source blockchain, through which it is pushed to the destination blockchain. However, this requires the source blockchain to actively transmit the transaction content, which requires appropriate modification of the source blockchain, resulting in some intrusion into the source blockchain network. Moreover, there is no standard cross-link communication protocol at present, which is inconvenient for data standardization among cross-link systems.
Based on this, the embodiment of the application provides a cross-block chain communication method, a device, a cross-chain service system and a cross-chain transaction system, and the technical problem that different block chain networks are difficult to communicate with each other can be solved through the method.
Embodiments of the present invention are further described below with reference to the accompanying drawings.
Fig. 1 is a flowchart illustrating a method for inter-block chain communication according to an embodiment of the present disclosure. The method can be applied to cross-chain service nodes. As shown in fig. 1, the method includes:
s110, first transaction information of monitored cross-chain transactions is obtained from the source blockchain network, the cross-chain transactions are transactions between the source blockchain network and the target blockchain network, and the first transaction information comprises cross-chain transaction data.
The inter-chain transaction is a transaction between a first client corresponding to a source blockchain and a second client corresponding to a target blockchain, the first transaction information corresponds to a source blockchain, the first transaction information comprises inter-chain transaction data, the source blockchain is recorded in a blockchain link point of a source blockchain network, and the target blockchain is recorded in a blockchain node of the target blockchain network.
Illustratively, the cross-chain service node may actively monitor a transaction data change state in the source blockchain network, capture first transaction information from the source blockchain network if the first transaction information of the cross-chain transaction is monitored and found, package the cross-chain transaction data according to a target blockchain network specified by the cross-chain transaction data to generate a cross-chain transaction data packet, and push the data packet inside the cross-chain service node.
And S120, sending second transaction information to the target blockchain network based on the cross-chain transaction data, wherein the second transaction information comprises the cross-chain transaction data.
For example, a first request may be sent to a third client of the target blockchain network based on the cross-chain transaction data. The first request is used for requesting the second client to generate second transaction information of cross-chain transaction so that the third client sends the second transaction information to the block link point of the target block chain network, the second transaction information corresponds to the target block chain, and the second transaction information comprises cross-chain transaction data.
Wherein the second transaction information is transaction data generated by the third client according to the cross-chain transaction data. It should be noted that the third client may transmit the second transaction information to the target blockchain network, and the target blockchain network can execute the transaction process based on the second transaction information.
For example, after the data packet is pushed for a period of time in the inter-link service node, the data packet may be unpacked and analyzed, and the inter-link transaction data is submitted to the target client of the target block link network according to the content of the packet, so as to initiate a transaction to the target client, and the target block link network executes the transaction.
And S130, acquiring the execution result of the execution end of the monitored second transaction information from the target block chain network.
Wherein the second transaction information is generated based on the cross-chain transaction data in step S120.
It should be noted that, in the process that the second transaction information is executed in the target blockchain network, the cross-chain service node can actively monitor the executed process at any time to monitor the execution result of the second transaction information.
And S140, sending indication information to the source blockchain network based on the execution result, wherein the indication information is used for indicating that the cross-chain transaction is ended.
For example, a second request is sent to a fourth client of the source blockchain network based on the execution result. The second request is used for requesting the fourth client to send the execution result to the block chain node of the source block chain network, so that the block chain node of the source block chain network records the first transaction information in the source block chain based on the execution result.
For example, as shown in fig. 2, a cross-link service node (relay service) may monitor a cross-link transaction between a source blockchain network and a target blockchain network, where the cross-link transaction is initiated by the source blockchain network corresponding to an account of user a, and provide a function of transmitting the cross-link transaction across the blockchain network by the cross-link service node, so as to transfer data of the cross-link transaction to an account of user B, that is, an account corresponding to a third user end of the target blockchain network. In practical applications, the block chain crossing communication method provided in the embodiment of the present application may also be a method for cross-chain intercommunication between federation chains.
In some embodiments, the first client and the fourth client may be the same, and the second client and the third client may be the same. In addition, the first client and the fourth client may also be referred to as source clients, and the second client and the third client may also be referred to as target clients.
In the embodiment of the application, the cross-chain service node can perform data interaction between the cross-chain service node and the block chain network in a manner of monitoring the block chain network and in a manner of sending data to the third client, so as to implement cross-block chain communication between different block chain networks.
Furthermore, by monitoring the transaction states of the source blockchain network and the target blockchain network, the source blockchain network and the target blockchain network do not need to be modified, and cross-chain transaction data between the source blockchain network and the target blockchain network can be directly acquired and transmitted, so that a cross-chain transaction process with higher efficiency is realized.
The above steps are described in detail below.
In some embodiments, the first transaction information is used to indicate a cross-chain transaction in the source blockchain and the second transaction information is used to indicate a cross-chain transaction in the target blockchain, the first transaction information and the second transaction information being the same or different.
For example, as shown in fig. 2, a cross-link service node (relay service) can constantly monitor a transaction state of a source blockchain network and push a cross-link transaction according to the transaction state. Specifically, a source blockchain network initiates a cross-chain transaction through a cross-chain service node, and locks an asset to be transferred, after the cross-chain transaction achieves consensus confirmation inside the source blockchain network, the cross-chain service node acquires and pushes data of the cross-chain transaction, and the data of the cross-chain transaction is pushed to a target blockchain network, so that the cross-chain transaction submission of the target blockchain network is initiated according to the data content of the cross-chain transaction.
Similarly, the cross-link service node (relay service) can monitor the execution state of the cross-link transaction of the target blockchain network at any moment and push the execution result back to the source blockchain network. Specifically, the target blockchain network confirms to receive the data of the cross-chain transaction, and performs the common uplink process inside the target blockchain network. When the cross-chain transaction confirmation stage is completed, the target blockchain network receives cross-chain transaction resources, namely the target blockchain network achieves the cross-chain transaction consensus confirmation, and the cross-chain service node pushes the cross-chain confirmation transaction to the source blockchain network.
Through the process of consensus confirmation, the transaction data acquired by the cross-chain service node from each blockchain network is the transaction data which achieves consensus in the blockchain network, so that the accuracy of the transaction data acquired by the cross-chain service node from the blockchain network is improved.
In some embodiments, it may be determined whether a transaction is allowed between the source blockchain and the target blockchain to ensure the legitimacy of the cross-chain transaction. As an example, after step S110, the method may further include the steps of:
step a, judging whether the transaction is allowed between the source block chain network and the target block chain network or not based on the source block chain network, the target block chain network and a preset cross-chain communication white list. If yes, executing step b.
And b, determining the cross-chain transaction as legal data.
For example, after acquiring the cross-chain transaction data, the cross-chain service node may determine the cross-chain transaction data by using a preconfigured access-allowed white list, and determine that the cross-chain transaction data is legal data after determining that the transaction is allowed between the source block chain and the target block chain.
In practical application, the cross-chain service node can also perform the routing forwarding operation of the cross-chain transaction message on the cross-chain transaction data by using the forwarding routing table, so as to realize the providing process of the routing service. For example, the service state of the next sub-node inside the cross-chain service node can be monitored so as to perform route forwarding operation on cross-chain transaction data.
By judging the transaction permission condition between the source block chain and the target block chain, the validity of cross-link transaction data for cross-link communication between the source block chain and the target block chain can be ensured.
In some embodiments, a cross-chain communication protocol rule may be preset and data filtering may be performed according to the rule, so as to improve data transmission efficiency of cross-blockchain communication. As an example, after step S110, the method may further include the steps of:
and c, judging whether the content of the cross-link transaction data meets the preset cross-link communication protocol rule or not. If yes, executing step d.
And d, determining the cross-chain transaction data as valid data.
In practical applications, a cross-blockchain communication protocol may be predefined. The cross-chain service node can check whether the cross-chain transaction data meets the filtering rule of the protocol or not, and if yes, the cross-chain transaction data is pushed to the corresponding next child node in the cross-chain service node. Thereby detecting the validity of the cross-chain transaction data. Of course, invalid data requests may also be masked, i.e., the validity of the cross-chain transaction is checked:
the communication protocol of the cross block chain can be a KBTP protocol, further the effectiveness of cross chain transaction is checked, and if the rule of the KBTP protocol is met, cross chain transaction data is pushed to the corresponding next child node.
By presetting a cross-chain communication protocol rule, a block chain cross-chain communication protocol is defined, and a subsequent system can directly perform heterogeneous system cross-chain communication through the protocol so as to improve the data transmission efficiency of cross-block chain communication.
In some embodiments, a cross-chain service consensus mechanism between the source blockchain network and the target blockchain network may be set to more effectively check whether a cross-chain transaction achieves consensus between different blockchains. As an example, after step S110, the method may further include the steps of:
and e, checking whether the consensus mechanism corresponding to the source block chain network and the consensus mechanism corresponding to the target block chain network accord with a preset cross-chain consensus rule or not. If yes, executing step d.
And f, forming a cross-chain service consensus mechanism between the source block chain network and the target block chain network.
Through presetting the cross-chain consensus rule, a certain consensus standard can be provided for the judgment process of whether the consensus between the source block chain network and the target block chain network is achieved, whether the cross-chain transaction achieves the consensus between different block chains can be judged more effectively, and the consensus result of the cross-chain transaction is verified more effectively.
In some embodiments, after it is ensured that the cross-chain transaction data is legal, valid and can reach a consensus, the cross-chain transaction data can be sent to the target client to ensure the accuracy of the cross-chain transaction process. As an example, before step S120, the method may further include the steps of:
and g, determining that a cross-chain service consensus mechanism is formed, and the cross-chain transaction data are legal data and valid data at the same time.
After a common cross-chain service consensus mechanism is formed between the source blockchain network and the target blockchain network, legal and effective cross-chain transaction data are pushed to a specified target client so as to initiate cross-chain transaction to the target client.
After a series of verification and judgment processes, the next transaction uplink operation is carried out, so that the chain-crossing transaction between the source block chain network and the target block chain network is legal and effective, and a consensus transaction can be achieved, so that the accuracy of the chain-crossing transaction process is ensured.
In some embodiments, a cross-chain service consensus mechanism may be utilized to verify whether the transaction result really reaches a consensus among different blockchain networks, so as to guarantee the authenticity of the transaction result. As an example, after step S130, the method may further include the steps of:
and h, checking whether the execution result conforms to a cross-chain service consensus mechanism. If yes, executing step i.
And step i, if so, determining that the execution result of the second transaction information is successful.
And f, the cross-chain service node can detect whether the cross-chain transaction consensus between the source block chain network and the target block chain network is really achieved or not by using the cross-chain service consensus mechanism in the step f. After confirming that the cross-chain transaction is indeed completed to achieve the consensus, the execution result of the cross-chain transaction can be sent to the source client, so that the source blockchain network confirms that the cross-chain transaction is completed.
By using a cross-chain service consensus mechanism between the source blockchain network and the target blockchain network, the consensus result of cross-chain transaction between different blockchain networks is detected, and the final successful transaction is ensured to be the real result really achieving the consensus between different blockchain networks.
In some embodiments, data for cross-chain transactions may be stored in a tree structure to facilitate query retrieval for cross-chain transactions. As an example, the method may further comprise the steps of: and forming a tree structure for recording the cross-chain transaction data by using data structures corresponding to the source block chain network and the target block chain network.
For example, as shown in fig. 2, a cross-chain service node (relay service) may record the whole data of the cross-chain transaction, that is, store the data in a database, and may form a tree-structure transaction record result according to the structures of the source blockchain network and the target blockchain network, so as to facilitate efficient query and retrieval of the cross-chain transaction.
Fig. 3 provides a schematic structural diagram of a cross-blockchain communication device. As shown in fig. 3, the inter-block chain communication apparatus 300 includes:
a first obtaining module 301, configured to obtain, from a source blockchain network, monitored first transaction information of a cross-chain transaction, where the cross-chain transaction is a transaction between the source blockchain network and a target blockchain network, and the first transaction information includes: cross-chain transaction data;
a sending module 302, configured to send second transaction information to the target blockchain network based on the cross-chain transaction data, where the second transaction information includes: cross-chain transaction data;
a second obtaining module 303, configured to obtain, from the target blockchain network, an execution result of the execution completion of the monitored second transaction information;
the sending module 302 is further configured to send, to the source blockchain network, indication information based on the execution result, where the indication information is used to indicate that the cross-chain transaction is ended.
In some embodiments, the first transaction information is used to indicate a cross-chain transaction in the source blockchain network and the second transaction information is used to indicate a cross-chain transaction in the target blockchain network, the first transaction information and the second transaction information being the same or different.
In some embodiments, the apparatus further comprises:
the first judgment module is used for judging whether the transaction is allowed between the source block chain network and the target block chain network or not based on the source block chain network, the target block chain network and a preset cross-chain communication white list;
and the first determining module is used for determining the cross-chain transaction as legal data if the cross-chain transaction is legal data.
In some embodiments, the apparatus further comprises:
the second judgment module is used for judging whether the content of the cross-link transaction data conforms to the preset cross-link communication protocol rule or not;
and the second determining module is used for determining the cross-chain transaction data as valid data if the cross-chain transaction data is valid data.
In some embodiments, the apparatus further comprises:
the verification module is used for verifying whether the consensus mechanism corresponding to the source block chain network and the consensus mechanism corresponding to the target block chain network accord with a preset cross-chain consensus rule or not;
and the forming module is used for forming the cross-chain service consensus between the source block chain network and the target block chain network if the cross-chain service consensus exists.
In some embodiments, the apparatus further comprises:
and the third determining module is used for determining that the cross-chain service consensus is formed and the cross-chain transaction data are legal data and valid data.
In some embodiments, the apparatus further comprises:
the checking module is used for checking whether the execution result conforms to the cross-chain service consensus;
and the fourth determining module is used for determining that the execution result of the second transaction information is successful if the second transaction information is true.
In some embodiments, the apparatus further comprises:
and the recording module is used for forming a tree structure for recording the cross-chain transaction data by using the structures corresponding to the source block chain and the target block chain.
The block chain crossing communication device provided by the embodiment of the application has the same technical characteristics as the block chain crossing communication method provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
As shown in fig. 4, an electronic device 400 includes a memory 401 and a processor 402, where the memory stores a computer program that can run on the processor, and the processor executes the computer program to implement the steps of the method provided in the foregoing embodiment.
Referring to fig. 4, the electronic device further includes: a bus 403 and a communication interface 404, the processor 402, the communication interface 404 and the memory 401 being connected by the bus 403; the processor 402 is used to execute executable modules, such as computer programs, stored in the memory 401.
The Memory 401 may include a high-speed Random Access Memory (RAM), and may also include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 4040 (which may be wired or wireless), and the internet, a wide area network, a local network, a metropolitan area network, and the like may be used.
Bus 403 may be an ISA bus, PCI bus, EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 4, but that does not indicate only one bus or one type of bus.
The memory 401 is used for storing a program, and the processor 402 executes the program after receiving an execution instruction, and the method performed by the apparatus defined by the process disclosed in any of the foregoing embodiments of the present application may be applied to the processor 402, or implemented by the processor 402.
The processor 402 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 402. The Processor 402 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 401, and the processor 402 reads the information in the memory 401 and completes the steps of the method in combination with the hardware.
FIG. 5 provides a schematic diagram of a cross-chain service system. As shown in fig. 5, the cross-chain service system 500 includes: the system comprises a plurality of execution service nodes, a plurality of network nodes and a plurality of service nodes, wherein the execution service nodes are mainly used for monitoring the network transaction state and pushing cross-link transaction according to the transaction state; and receiving the cross-chain transaction of the central service, and pushing the cross-chain transaction to a specified client to initiate the transaction. The executive service node needs to configure a designated listening network node and a designated transaction initiating client. As an example, the executive service node is specifically configured to: acquiring first transaction information of monitored cross-chain transactions from a source blockchain network, wherein the cross-chain transactions are transactions between the source blockchain network and a target blockchain network, and the first transaction information comprises: the cross-chain transaction data; sending second transaction information to the target blockchain network based on the cross-chain transaction data, the second transaction information comprising: the cross-chain transaction data; acquiring an execution result of the monitored execution end of the second transaction information from the target blockchain network; and sending indication information to the source blockchain network based on the execution result, wherein the indication information is used for indicating that the cross-chain transaction is ended.
Multiple execution service nodes may be deployed in a distributed manner, for example, as shown in fig. 5, a first execution service node 501 may be deployed at a location close to a source blockchain network 601 and a source client 603 corresponding to the source blockchain network, for listening to transactions in the source blockchain network 601 and sending transactions in the source blockchain network through the source client 603. A second executive service node 505 can be deployed proximate to the target blockchain network 602 and a target client 604 corresponding to the target blockchain network for listening to transactions in the target blockchain network 602 and sending transactions in the target blockchain network through the target client 604.
In some embodiments, the cross-chain service system 500 further includes at least one central service node 503, which is responsible for receiving cross-chain transactions submitted by the execution service node, checking the validity of the transactions, and pushing the transactions to the execution service node; the central service node needs to configure transaction verification rules and a gateway service node list. As an example, the central service node 503 is specifically configured to: and checking whether the consensus mechanism corresponding to the source block chain network and the consensus mechanism corresponding to the target block chain network accord with a preset cross-chain consensus rule or not, and if so, forming a cross-chain service consensus between the source block chain network and the target block chain network.
In some embodiments, the cross-chain service system 500 further includes at least one routing service node 502 responsible for receiving cross-chain transaction data pushed by the executive service node and pushing the data to the central service node. The routing service node 502 needs to configure the white list and forwarding routing table that are allowed to be accessed. As an example, the routing service node may be configured to: judging whether the transaction is allowed between the source block chain network and the target block chain network or not based on the source block chain network, the target block chain network and a preset cross-chain communication white list; and if so, determining that the cross-link transaction is legal data.
In some embodiments, the cross-chain service system 500 further includes at least one gateway service node 504 for receiving and verifying whether the received data conforms to the transmission specification, and pushing the data to a corresponding executive service node if the received data conforms to the transmission specification. The gateway service needs to configure data filtering rules. As an example, the gateway service node is to: and judging whether the content of the cross-link transaction data accords with a preset cross-link communication protocol rule, if so, determining the cross-link transaction data as valid data.
For example, the cross-chain transaction submission is triggered by the execution service node, and mainly includes two types, namely, listening transaction submission and receiving data transaction submission: the execution service node monitors the appointed network transaction state, and when the source block chain network initiates the cross-chain transaction and the consensus is confirmed in the network, the execution service node initiates the cross-chain transaction submission of the target network according to the transaction data content; and after receiving the cross-link transaction verified by the central service node, the execution service node pushes the designated transaction data to a preset network client to initiate the transaction.
The executive service node comprises a node transaction state monitoring function and a transaction pushing and submitting function: monitoring the data change state of the designated network node, if cross-link transaction data is monitored and found, generating a cross-link transaction data message by packaging according to a target network designated by the transaction data, and pushing the data message to a central service node; and receiving a cross-link transaction data message of the central service node, unpacking and analyzing the data message, submitting a data item to a client of a specified network according to the message content, and initiating a transaction.
The central service node checks the validity of the cross-chain transaction and records the related cross-chain transaction content. Wherein, the central service node checks the validity of the cross-chain transaction: deploying distributed services, receiving a cross-chain transaction message, and performing cross-chain validity check according to a cross-chain service consensus requirement and a consensus mechanism of a source block chain network and a target network to form a cross-chain service consensus; after passing the verification, forwarding the cross-chain transaction message to a corresponding execution service node, and carrying out next-step chain transmission operation by the execution service node; and storing the received cross-chain transaction into a database, and forming a tree-structure transaction record according to the structures of the source block chain network and the target network, thereby facilitating query and retrieval.
And the gateway service node detects the received data request and carries out validity check on the received cross-link transaction data. Wherein, the invalid data is shielded, and the validity of the cross-chain transaction is checked: detecting the received data request, and shielding invalid data requests; and checking the validity of the cross-chain transaction according to the protocol specification of the KBTP, and if the requirement is met, transferring the cross-chain transaction data message flow to an execution service node.
And the routing service node provides a routing skip service for the cross-chain transaction message received from the execution service node.
Performing routing forwarding operation of the cross-chain transaction message: monitoring the state of a central service node; and performing routing forwarding operation on the cross-chain transaction data message received from the execution service node.
In practical applications, each service node inside the cross-chain service system may be a distributed deployed node. Illustratively, as shown in FIG. 5, a plurality of routing service nodes 502 and a plurality of gateway service nodes 504 may be deployed in a distributed manner within a cross-chain service system.
Of course, other nodes, such as the database 506, may also be provided in the embodiments of the present application. The database 506 may be disposed in the cross-chain service system or may be separately disposed, and the database 506 may be configured to store the cross-chain transaction data and the execution result of the cross-chain transaction data in a form of a tree structure between blockchains.
The embodiment of the present application further provides a cross-chain transaction system 600, which includes a target block chain network, a source block chain network, a client corresponding to the target block chain network, a client corresponding to the source block chain network, and a cross-chain service system. As shown in fig. 5, the system includes a target blockchain network 602, a source blockchain network 601, a target client 604 of the target blockchain network, a source client 603 of the source blockchain network, and the cross-chain service system 500 provided by the above embodiments.
The cross-chain service system and the cross-chain transaction system provided by the embodiment of the application have the same technical characteristics as the cross-block-chain communication method and the device provided by the embodiment, so that the same technical problems can be solved, and the same technical effect can be achieved.
Corresponding to the above cross-block-chain communication method, an embodiment of the present application further provides a computer-readable storage medium storing machine executable instructions, which, when invoked and executed by a processor, cause the processor to execute the steps of the above cross-block-chain communication method.
The cross-block chain communication device provided by the embodiment of the application can be specific hardware on a device or software or firmware installed on the device. The device provided by the embodiment of the present application has the same implementation principle and technical effect as the foregoing method embodiments, and for the sake of brief description, reference may be made to the corresponding contents in the foregoing method embodiments where no part of the device embodiments is mentioned. It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the foregoing systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the cross-block chain communication method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures, and moreover, the terms "first", "second", "third", etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the scope of the embodiments of the present application. Are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (14)
1. A method of inter-blockchain communication, the method comprising:
acquiring first transaction information of monitored cross-chain transactions from a source blockchain network, wherein the cross-chain transactions are transactions between the source blockchain network and a target blockchain network, and the first transaction information comprises: data of the cross-chain transaction;
sending second transaction information to the target blockchain network based on the cross-chain transaction data, the second transaction information comprising: the cross-chain transaction data;
acquiring an execution result of the monitored execution end of the second transaction information from the target blockchain network;
and sending indication information to the source blockchain network based on the execution result, wherein the indication information is used for indicating that the cross-chain transaction is ended.
2. The method of claim 1, wherein the first transaction information is used to indicate the cross-chain transaction in the source blockchain network, wherein the second transaction information is used to indicate the cross-chain transaction in the target blockchain network, and wherein the first transaction information and the second transaction information are the same or different.
3. The method of claim 1, further comprising, after the step of obtaining the first transaction information of the monitored cross-chain transaction from the source blockchain network:
judging whether the transaction is allowed between the source block chain network and the target block chain network or not based on the source block chain network, the target block chain network and a preset cross-chain communication white list;
and if so, determining that the cross-link transaction is legal data.
4. The method of claim 3, further comprising, after the step of obtaining the monitored first transaction information for the cross-chain transaction from the source blockchain network:
judging whether the content of the cross-link transaction data accords with a preset cross-link communication protocol rule or not;
and if so, determining that the cross-chain transaction data is valid data.
5. The method of claim 4, further comprising, after the step of obtaining the first transaction information of the monitored cross-chain transaction from the source blockchain network:
checking whether a consensus mechanism corresponding to the source block chain network and a consensus mechanism corresponding to the target block chain network accord with a preset cross-chain consensus rule or not;
and if so, forming a chain-crossing service consensus between the source block chain network and the target block chain network.
6. The method of claim 5, further comprising, prior to the step of sending second transaction information to the target blockchain network based on the cross-chain transaction data:
and determining that the cross-chain service consensus is formed, and the cross-chain transaction data are legal data and valid data.
7. The method according to claim 6, wherein after the step of obtaining the monitored execution result of the execution end of the second transaction information from the target blockchain network, the method comprises:
checking whether the execution result conforms to the cross-chain service consensus;
and if so, determining that the execution result of the second transaction information is successful.
8. The method of any one of claims 1-7, further comprising:
and forming a tree structure for recording the cross-chain transaction data according to the data structures corresponding to the source block chain network and the target block chain network.
9. An apparatus for inter-blockchain communication, the apparatus comprising:
a first obtaining module, configured to obtain, from a source blockchain network, monitored first transaction information of a cross-chain transaction, where the cross-chain transaction is a transaction between the source blockchain network and a target blockchain network, and the first transaction information includes: data of the cross-chain transaction;
a sending module, configured to send second transaction information to the target blockchain network based on the cross-chain transaction data, where the second transaction information includes: the cross-chain transaction data;
a second obtaining module, configured to obtain, from the target blockchain network, an execution result of execution completion of the monitored second transaction information;
the sending module is further configured to send, to the source blockchain network, indication information based on the execution result, where the indication information is used to indicate that the cross-chain transaction is ended.
10. A cross-chain service device comprising a memory, a processor, and a computer program stored in the memory and operable on the processor, wherein the processor implements the steps of the method of any of claims 1 to 8 when executing the computer program.
11. A cross-chain service system, the system comprising a plurality of executive service nodes configured to:
acquiring first transaction information of monitored cross-chain transactions from a source blockchain network, wherein the cross-chain transactions are transactions between the source blockchain network and a target blockchain network, and the first transaction information comprises: data of the cross-chain transaction;
sending second transaction information to the target blockchain network based on the cross-chain transaction data, the second transaction information comprising: the cross-chain transaction data;
acquiring an execution result of the monitored execution end of the second transaction information from the target blockchain network;
and sending indication information to the source blockchain network based on the execution result, wherein the indication information is used for indicating that the cross-chain transaction is ended.
12. The system of claim 11, further comprising a central service node, a routing service node, and a gateway service node;
the central service node is used for verifying whether a consensus mechanism corresponding to the source block chain network and a consensus mechanism corresponding to the target block chain network accord with a preset cross-chain consensus rule or not, and if so, forming a cross-chain service consensus between the source block chain network and the target block chain network;
the gateway service node is used for judging whether the content of the cross-link transaction data accords with a preset cross-link communication protocol rule, and if so, determining the cross-link transaction data as valid data;
the routing service node is used for judging whether the transaction is allowed between the source block chain network and the target block chain network based on the source block chain network, the target block chain network and a preset cross-chain communication white list; and if so, determining that the cross-link transaction is legal data.
13. A cross-chain transaction system comprising a target blockchain network, a source blockchain network and the cross-chain service system of any one of claims 11 to 12.
14. A computer readable storage medium having stored thereon machine executable instructions which, when invoked and executed by a processor, cause the processor to execute the method of any of claims 1 to 8.
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