CN113468268A - Cross-chain processing method and device, electronic equipment and readable storage medium - Google Patents
Cross-chain processing method and device, electronic equipment and readable storage medium Download PDFInfo
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Abstract
The disclosure provides a cross-chain processing method and device, electronic equipment and a readable storage medium, and relates to the technical field of block chains, in particular to the technical field of cross-chain of block chains. The specific implementation scheme is as follows: generating first to-be-verified data by a first cross-link relay based on a cross-link processing request initiated on a first application link and aiming at target data on a second application link, and sending the first to-be-verified data to a relay link node; and performing first verification on the first data to be verified by the relay link node, generating second data to be verified by the second cross-link relay when the first verification passes, sending the second data to be verified to the second application link node, performing second verification on the second data to be verified by the second application link node, and processing the target data when the second verification passes. Based on the scheme, the method and the device can verify the credibility of the cross-chain transaction, and are beneficial to ensuring the safety and credibility of the cross-chain transaction.
Description
Technical Field
The present disclosure relates to the field of blockchain technologies, and in particular, to a method and an apparatus for processing a blockchain, an electronic device, and a readable storage medium.
Background
The block chain technology is developed to date, a plurality of different block chains are produced, and data on the chains of the block chains are isolated, so that the block chains become a data isolated island, and the different block chains cannot be interconnected and intercommunicated.
The cross-chain technology is a technology for solving data interaction between two or more blockchains, so that data can cross the barriers of the chains and the price value can be circulated among different blockchains.
In the cross-chain transaction, how to verify the credibility of the cross-chain transaction on the blockchain is an important problem to be solved in the cross-chain technology.
Disclosure of Invention
In order to solve at least one of the above drawbacks, the present disclosure provides a cross-chain processing method, an apparatus, an electronic device, and a readable storage medium.
According to a first aspect of the present disclosure, there is provided a cross-chain processing method, including:
the first cross-link relay generates first to-be-verified data based on a cross-link processing request initiated on the first application link and aiming at target data on the second application link, and sends the first to-be-verified data to the relay link node;
and the relay link node performs first verification on the first data to be verified, so that second data to be verified is generated when the first verification is passed by a second cross-link relay, the second data to be verified is sent to a second application link node, so that the second application link node performs second verification on the second data to be verified, and the target data is processed when the second verification is passed.
According to a second aspect of the present disclosure, there is provided another cross-chain processing method, the method including:
the method comprises the steps that a relay link node receives first to-be-verified data sent by a first cross-link relay and conducts first verification on the first to-be-verified data, wherein the first to-be-verified data are generated by the first cross-link relay based on a cross-link processing request initiated on a first application link and used for target data on a second application link;
when the first verification passes, the second cross-link relay generates second data to be verified, and the second data to be verified is sent to the second application link node;
and the second application chain link point performs second verification on the second data to be verified, and processes the target data when the second verification passes.
According to a third aspect of the present disclosure, there is provided a cross-chain processing apparatus, the apparatus comprising:
the data to be verified module is used for generating first data to be verified by the first cross-link relay based on a cross-link processing request initiated on the first application link and aiming at target data on the second application link, and sending the first data to be verified to the relay link node;
and the data verification module is used for performing first verification on the first to-be-verified data by the relay link node so as to generate second to-be-verified data when the first verification is passed by the second cross-link relay, sending the second to-be-verified data to the second application link node so as to perform second verification on the second to-be-verified data by the second application link node, and processing the target data when the second verification is passed.
According to a fourth aspect of the present disclosure, there is provided another cross-chain processing apparatus, the apparatus comprising:
the first data verification module is used for receiving first to-be-verified data sent by a first cross-link relay by a relay link node and performing first verification on the first to-be-verified data, wherein the first to-be-verified data is generated by the first cross-link relay based on a cross-link processing request initiated on a first application link and aiming at target data on a second application link;
the to-be-verified data module is used for generating second to-be-verified data through the second cross-link relay when the first verification passes, and sending the second to-be-verified data to the second application link node;
and the second data verification module is used for performing second verification on the second data to be verified by the second application link node and processing the target data when the second verification passes.
According to a fifth aspect of the present disclosure, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the cross-chain processing method.
According to a sixth aspect of the present disclosure, there is provided a non-transitory computer readable storage medium storing computer instructions for causing a computer to execute the above-described cross-chain processing method.
According to a seventh aspect of the present disclosure, there is provided a computer program product comprising a computer program which, when executed by a processor, implements the above-described cross-chain processing method.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.
The technical scheme provided by the disclosure has the following beneficial effects:
according to the scheme provided by the embodiment of the disclosure, a first to-be-verified data is generated by a first cross-link relay based on a cross-link processing request initiated on a first application link and used for target data on a second application link, and the first to-be-verified data is sent to a relay link node; and performing first verification on the first data to be verified by the relay link node, generating second data to be verified by the second cross-link relay when the first verification passes, sending the second data to be verified to the second application link node, performing second verification on the second data to be verified by the second application link node, and processing the target data when the second verification passes. Based on the scheme, the method and the device can verify the credibility of the cross-chain transaction, and are beneficial to ensuring the safety and credibility of the cross-chain transaction.
Drawings
The drawings are included to provide a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:
FIG. 1 is a schematic structural diagram of a cross-chain system provided by an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of a cross-chain processing method provided by an embodiment of the present disclosure;
FIG. 3 is a schematic flow chart diagram of another cross-chain processing method provided by the embodiments of the present disclosure;
FIG. 4 is a flowchart illustrating a specific implementation of a cross-chain processing method according to an embodiment of the disclosure;
FIG. 5 is a schematic structural diagram of a cross-chain processing apparatus provided in an embodiment of the present disclosure;
FIG. 6 is a schematic structural diagram of another cross-chain processing apparatus provided in the embodiments of the present disclosure;
fig. 7 is a block diagram of an electronic device for implementing the cross-chain processing method provided by the embodiment of the present disclosure.
Detailed Description
Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
Fig. 1 shows a schematic structural diagram of a cross-chain system provided by an embodiment of the present disclosure, and the method provided by the embodiment of the present disclosure is applied to the cross-chain system shown in fig. 1, where the cross-chain system includes a relay chain, a first application chain, a first cross-chain relay, a second application chain, and a second cross-chain relay.
The relay chain, namely the relay block chain, is deployed with a cross-chain management contract, and is used for application chain management, verification of application chain certification information, triggering of cross-chain events, storage query of cross-chain transactions, and the like. By abstracting the behavior of the heterogeneous chain, the relay chain standardizes the realization interface of the parallel chain, and the cross-chain management contract can be updated by realizing the block chain abstract class so as to adapt to the new heterogeneous chain type. The interfaces defined in the relay chain may be as shown in table 1.
TABLE 1
The function realized by the interface named as register Block is used for registering application chain information, the function realized by the interface named as unregisterBlock is used for canceling application chain information, and the function realized by the interface named as DataVertification is used for verifying the validity of a message sent by an application chain.
The first application chain and the second application chain are parallel chains participating in cross-chain transactions, a cross-chain contract and a service contract are deployed, the cross-chain contract and the service contract can be communicated through cross-chain contract calling, and unified validity checking, data serialization and safety authentication can be conducted on cross-chain messages of the service contract based on the cross-chain contract.
The first cross-link relay and the second cross-link relay, namely the relay, are interaction components for connecting different blockchain systems, and are used for connecting the application blockchain and the relay chain. Relays can listen to inter-link events occurring in block and relay chains. By abstracting the behavior of the heterogeneous chain, the cross-chain relay can define the interface shown in table 2, and different heterogeneous chains only need to realize the interface according to the characteristics of the heterogeneous chains.
TABLE 2
The function realized by the interface named as 'Init' is initialization application chain configuration, the function realized by the interface named as 'Stop' is Stop operation, the function realized by the interface named as 'ListeningEvents' is monitoring cross-chain events and transmitting the events to a core module for processing, and the function realized by the interface named as 'InvokeProxyContract' calls a cross-chain contract and is used for transmitting the information of a relay chain to a parallel chain.
The cross-chain system provided by the embodiment of the disclosure may further include a cross-chain client, that is, a user may initiate a request to different types of application blockchains and relay chains using an entry of the cross-chain system.
The chain-crossing system provided by the embodiment of the disclosure does not limit the number of application block chains, can be expanded according to actual needs, and supports access of heterogeneous block chains.
The initialization process of the cross-chain system provided by the embodiment of the disclosure is specifically as follows:
the application chains respectively start the network and deploy cross-link contracts (designating relay chains during initialization) and service contracts;
a relay chain deploys a cross-link management contract;
information of each application chain is registered with a cross-link management contract of the relay chain. The registered information depends on the trust model of the application chain, and can be a starting block or a certifier certificate;
the configuration and initiation of the relay is used to connect the application block chain with the relay chain.
When the inter-chain system provided by the embodiment of the present disclosure wants to support a new blockchain a of a blockchain type, the following modifications need to be made:
(1) upgrading a cross-link management contract of the relay link, and supporting registration, management and verification of the block chain A;
(2) compiling a cross-link contract of an intelligent contract language facing to a block chain A;
(3) and compiling a plug-in of the cross-link relay based on the SDK of the block chain A to realize a corresponding interface, so that the relay has the capability of communicating with the block chain A.
It becomes very simple for a running application chain to want to access a cross-chain system, and the steps are as follows:
(1) the application chain deploys a cross-chain contract oriented to the intelligent contract language of the application chain;
(2) upgrading the existing service contract, and communicating with the cross-chain contract through cross-contract calling;
(3) authorizing a cross-link right of the business contract through a cross-link contract;
(4) registering information of the application chain to the relay chain, such as registering a root of trust of the application chain, and verifying the validity of the message based on the root of trust when subsequently performing cross-chain message verification;
(5) cross-link relays are configured and initiated to connect the relay chain with the application chain.
At this time, the application chain can access the cross-chain system, and cross-chain connection is established with other application chains.
In the prior art, the interoperation of two heterogeneous or homogeneous block chains is generally realized through a relay mode, and the two chains need to establish a light client for maintaining the state of the block chain of the other side. In this way, since the two blockchains need to directly verify the messages of the other side, the codes of the blockchains need to be modified, the implementation difficulty is high, and hot plugging of the blockchains cannot be realized, i.e., the functions of accessing, exiting and updating the application chains cannot be performed under the condition that the operation of the cross-chain system is not affected. In addition, in this way, when one blockchain wants to cross chains with heterogeneous blockchains of different types, an adaptation is needed to be performed on one blockchain, which results in high adaptation complexity.
The cross-chain system provided by the embodiment of the disclosure can realize the access of the application chain in a mode of registering the application chain to the cross-chain management contract of the relay chain by deploying the cross-chain contract and the service intelligent contract, does not need complicated code modification work, reduces the realization difficulty of the cross-chain system, and supports the hot plug of the application block chain, namely, can perform the functions of access, exit and update on the application block chain under the condition of not influencing the operation of the cross-chain system. In addition, in the chain crossing system provided by the embodiment of the disclosure, when the application block chain needs to cross the chain with heterogeneous block chains of different types, two-by-two adaptation of the block chain is not needed, and only the relay chain needs to be adapted, so that the adaptation complexity is reduced.
Fig. 2 shows a schematic flowchart of a cross-chain processing method provided by an embodiment of the present disclosure, and as shown in fig. 2, the method mainly includes:
step S210: the first cross-link relay generates first to-be-verified data based on a cross-link processing request initiated on the first application link and aiming at target data on the second application link, and sends the first to-be-verified data to the relay link node;
step S220: and the relay link node performs first verification on the first data to be verified, so that second data to be verified is generated when the first verification is passed by a second cross-link relay, the second data to be verified is sent to a second application link node, so that the second application link node performs second verification on the second data to be verified, and the target data is processed when the second verification is passed.
The first application chain and the second application chain may be two block chains participating in a cross-chain transaction, the first cross-chain relay is in communication with the first application chain and the relay chain, and the second cross-chain relay is in communication with the second application chain and the relay chain. The first application chain node is a block chain node in the first application chain, the second application chain node is a block chain link node in the second application chain, and the relay chain node is a block chain node in the relay chain.
The first application chain may be an initiator of the cross-chain processing request, and the user may initiate the cross-chain processing request by invoking a business contract of the first application chain through a client of the first application chain.
The target data is a resource involved in the cross-chain processing, and as a typical example, the usage scenario of the cross-chain processing may initiate a cross-chain transaction of writing a certificate to a second application chain for a user on the first application chain.
The first to-be-verified data can be generated by the first cross-link relay and sent to the relay link node, so as to verify the credibility of the cross-link processing request on the first application link to the relay link.
When the first to-be-verified data is not verified, the cross-link processing request on the first application chain can be considered to be not trusted, and then the cross-link processing flow can be terminated.
When the first to-be-verified data passes verification, the cross-link processing request on the first application chain can be considered to be credible, and then the relay chain node can generate second to-be-verified data which is used for verifying the credibility of the cross-link processing request on the first application chain to the second application chain.
In the cross-link system provided by the embodiment of the disclosure, because the first application chain and the second application chain are both adapted to the relay chain, after the relay chain verifies that the first to-be-verified data is trusted, the second to-be-verified data can be generated, and the second application chain can complete verification of validity of the cross-link processing request by verifying the second to-be-verified data, thereby overcoming limitations of the existing cross-link system.
In the method provided by the embodiment of the disclosure, a first cross-link relay generates first to-be-verified data based on a cross-link processing request initiated on a first application link and directed to target data on a second application link, and sends the first to-be-verified data to a relay link node; and performing first verification on the first data to be verified by the relay link node, generating second data to be verified by the second cross-link relay when the first verification passes, sending the second data to be verified to the second application link node, performing second verification on the second data to be verified by the second application link node, and processing the target data when the second verification passes. Based on the scheme, the method and the device can verify the credibility of the cross-chain transaction, and are beneficial to ensuring the safety and credibility of the cross-chain transaction.
In an optional implementation manner of the present disclosure, the generating, by the first cross-link relay, the first to-be-verified data based on the cross-link processing request initiated on the first application chain for the target data on the second application chain includes:
the first application chain node responds to a cross-chain processing request initiated on the first application chain and aiming at target data on the second application chain to generate a first cross-chain event;
the first cross-link relay generates first data to be verified when monitoring a first cross-link event.
The first cross-link relay may monitor the first cross-link event through event monitoring. The event information of the first cross-chain event may include basic information of the cross-chain processing request.
The first cross-link relay can package the first to-be-verified data and the basic information of the cross-link processing request into a first transaction, and submit the first transaction to the relay link.
In an optional implementation manner of the present disclosure, the generating, by the first cross-link relay, first to-be-verified data when the first cross-link event is monitored includes:
when the first cross-link relay monitors the first cross-link event, generating a first existence certificate of the first cross-link event, and taking the first existence certificate as first data to be verified;
the relay link node performs first verification on the first to-be-verified data, and the method comprises the following steps:
the relay link node performs a first verification of the first presence credential.
Wherein the first presence attestation is a presence attestation of the first cross-chain event.
In actual use, a first presence credential for a first cross-chain event may be generated from trust information for a first application chain.
The relay link node may obtain the trust information of the first application chain in advance, so that the validity of the first presence certificate is verified based on the trust information of the first application chain.
The first application chain can initiate a registration request when joining the cross-chain system, and registers the trust information of the first application chain to the relay chain, so that a foundation is provided for the subsequent relay chain to verify the first to-be-verified data based on the trust information of the first application chain.
In particular, the trust information may comprise at least one of a root of trust, starting block information, and a certificate of the verifier node.
Fig. 3 shows a schematic flowchart of a cross-chain processing method provided by an embodiment of the present disclosure, and as shown in fig. 3, the method mainly includes:
step S310: the method comprises the steps that a relay link node receives first to-be-verified data sent by a first cross-link relay and conducts first verification on the first to-be-verified data, wherein the first to-be-verified data are generated by the first cross-link relay based on a cross-link processing request initiated on a first application link and used for target data on a second application link;
step S320: when the first verification passes, the second cross-link relay generates second data to be verified, and the second data to be verified is sent to the second application link node;
step S330: and the second application chain link point performs second verification on the second data to be verified, and processes the target data when the second verification passes.
The first application chain and the second application chain may be two block chains participating in a cross-chain transaction, the first cross-chain relay is in communication with the first application chain and the relay chain, and the second cross-chain relay is in communication with the second application chain and the relay chain. The first application chain node is a block chain node in the first application chain, the second application chain node is a block chain link node in the second application chain, and the relay chain node is a block chain node in the relay chain.
The first application chain may be an initiator of the cross-chain processing request, and the user may initiate the cross-chain processing request by invoking a business contract of the first application chain through a client of the first application chain.
The target data is a resource involved in the cross-chain processing, and as a typical example, the usage scenario of the cross-chain processing may be to write a certificate to a second application chain for a user on the first application chain.
The first to-be-verified data can be generated by the first cross-link relay and sent to the relay link node, so as to verify the credibility of the cross-link processing request on the first application link to the relay link.
When the first to-be-verified data is not verified, the cross-link processing request on the first application chain can be considered to be not trusted, and then the cross-link processing flow can be terminated.
When the first to-be-verified data passes verification, the cross-link processing request on the first application chain can be considered to be credible, and then the relay chain node can generate second to-be-verified data which is used for verifying the credibility of the cross-link processing request on the first application chain to the second application chain.
In the cross-link system provided by the embodiment of the disclosure, because the first application chain and the second application chain are both adapted to the relay chain, after the relay chain verifies that the first data to be verified is trusted, the second data to be verified can be generated, and the second application chain can complete verification of validity of the cross-link processing request by verifying the second data to be verified, thereby overcoming limitations of the existing cross-link system.
In the method provided by the embodiment of the disclosure, a first cross-link relay generates first to-be-verified data based on a cross-link processing request initiated on a first application link and directed to target data on a second application link, and sends the first to-be-verified data to a relay link node; and performing first verification on the first data to be verified by the relay link node, generating second data to be verified by the second cross-link relay when the first verification passes, sending the second data to be verified to the second application link node, performing second verification on the second data to be verified by the second application link node, and processing the target data when the second verification passes. Based on the scheme, the method and the device can verify the credibility of the cross-chain transaction, and are beneficial to ensuring the safety and credibility of the cross-chain transaction.
In an optional implementation manner of the present disclosure, the generating, by the first cross-link relay, the first to-be-verified data based on the cross-link processing request initiated on the first application chain for the target data on the second application chain includes:
the first application chain node responds to a cross-chain processing request initiated on the first application chain and aiming at target data on the second application chain to generate a first cross-chain event;
the first cross-link relay generates first data to be verified when monitoring a first cross-link event.
The first cross-link relay may monitor the first cross-link event through event monitoring. The event information of the first cross-chain event may include basic information of the cross-chain processing request.
The first cross-link relay can package the first to-be-verified data and the basic information of the cross-link processing request into a first transaction, and submit the first transaction to the relay link.
In an optional implementation manner of the present disclosure, the generating, by the first cross-link relay, first to-be-verified data when the first cross-link event is monitored includes:
when the first cross-link relay monitors the first cross-link event, generating a first existence certificate of the first cross-link event, and taking the first existence certificate as first data to be verified;
the relay link node performs first verification on the first to-be-verified data, and the method comprises the following steps:
the relay link node performs a first verification of the first presence credential.
Wherein the first presence attestation is a presence attestation of the first cross-chain event.
In actual use, a first presence credential for a first cross-chain event may be generated from trust information for a first application chain.
The relay link node may obtain the trust information of the first application chain in advance, so that the validity of the first presence certificate is verified based on the trust information of the first application chain.
The first application chain can initiate a registration request when joining the cross-chain system, and registers the trust information of the first application chain to the relay chain, so that a foundation is provided for the subsequent relay chain to verify the first to-be-verified data based on the trust information of the first application chain.
In particular, the trust information may comprise at least one of a root of trust, starting block information, and a certificate of the verifier node.
Fig. 4 is a schematic flowchart of a specific implementation of the cross-chain processing method provided in the embodiment of the present disclosure, where the specific flowchart is as follows:
1. calling a service contract 2 of the application chain A by a user Alice of the application chain A (namely a first application chain) through a cross-chain Client (namely a cross-chain Client);
2. triggering a cross-link calling condition by the service contract 2 of the application chain A, processing target data on the service contract 2 of the application chain B (namely a second application chain), and calling the cross-link contract of the application chain A through the cross-link contract;
3. the cross-link contract of the application chain A triggers a first cross-link event E1, and E1 identifies basic information of the cross-link processing request;
4. a relay (namely a first cross-link relay) connected with the application chain A obtains a first cross-link event E1 through event monitoring;
5. the first cross-chain relay resolves the first cross-chain event E1 and then generates a first existence proof P1 of the first cross-chain event E1, wherein the first existence proof P1 can be used for proving the validity of the first cross-chain event E1;
6. the first cross-link relay generates a first transaction T1 of a cross-link management contract for sending to the relay link, and basic information of a cross-link processing request and a first existence certification P1 are contained in the first transaction T1;
7. the method comprises the steps that a cross-link management contract of a relay link executes a first transaction T1, the validity of a first existence certificate P1 is verified, then basic information of a cross-link processing request at this time is recorded in an account book, if the verification of the first existence certificate P1 is passed, a second cross-link event E2 is sent out, and event information of the second cross-link event E2 contains the basic information of the cross-link processing request;
8. a second cross-link relay connected with the application chain B monitors a second cross-link event E2, and the resource location of the calling target data is obtained through analysis;
9. the relay link node analyzes the second cross-link event E2 and generates a second existence proof P2 for proving the validity of the second cross-link event E2;
10. the relay node generates a second transaction T2 of the cross-chain contract for sending to the application chain B, and the second T2 contains basic information of the cross-chain processing request and a second existence certification P2;
11. performing a second transaction T2 by the cross-link contract of the application chain B, verifying the validity of a second existence proof P2, and obtaining the resource location of the calling target data;
12. and the cross-chain contract of the application chain B calls a service contract through the cross-contract to process the target data.
Based on the same principle as the method shown in fig. 2, fig. 5 shows a schematic structural diagram of a cross-chain processing apparatus provided by the embodiment of the present disclosure, as shown in fig. 5, the cross-chain processing apparatus 50 may include:
a to-be-verified data module 510, configured to generate, by a first inter-link relay, first to-be-verified data based on a inter-link processing request initiated on a first application link and for target data on a second application link, and send the first to-be-verified data to a relay link node;
the data verification module 520 is configured to perform first verification on the first to-be-verified data by the relay link node, so that when the first verification passes, the second cross-link relay generates second to-be-verified data, send the second to-be-verified data to the second application link node, so that the second to-be-verified data is subjected to second verification by the second application link node, and process the target data when the second verification passes.
In the apparatus provided in the embodiment of the present disclosure, a first cross-link relay generates first to-be-verified data based on a cross-link processing request initiated on a first application link for target data on a second application link, and sends the first to-be-verified data to a relay link node; and performing first verification on the first data to be verified by the relay link node, generating second data to be verified by the second cross-link relay when the first verification passes, sending the second data to be verified to the second application link node, performing second verification on the second data to be verified by the second application link node, and processing the target data when the second verification passes. Based on the scheme, the method and the device can verify the credibility of the cross-chain transaction, and are beneficial to ensuring the safety and credibility of the cross-chain transaction.
Optionally, when the first cross-link relay generates the first to-be-verified data based on a cross-link processing request initiated on the first application chain for the target data on the second application chain, the to-be-verified data module is specifically configured to:
the first application chain node responds to a cross-chain processing request initiated on the first application chain and aiming at target data on the second application chain to generate a first cross-chain event;
the first cross-link relay generates first data to be verified when monitoring a first cross-link event.
Optionally, when the first cross-link relay monitors the first cross-link event and generates the first to-be-verified data, the to-be-verified data module is specifically configured to:
when the first cross-link relay monitors the first cross-link event, generating a first existence certificate of the first cross-link event, and taking the first existence certificate as first data to be verified;
the data verification module is specifically configured to, when the relay link node performs first verification on the first to-be-verified data:
the relay link node performs a first verification of the first presence credential.
It is understood that the above modules of the cross-chain processing device in the embodiment of the present disclosure have functions of implementing the corresponding steps of the cross-chain processing device method in the embodiment shown in fig. 2. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above. The modules can be software and/or hardware, and each module can be implemented independently or by integrating a plurality of modules. For the functional description of each module of the test apparatus, reference may be specifically made to the corresponding description of the cross-chain processing method in the embodiment shown in fig. 2, and details are not repeated here.
Based on the same principle as the method shown in fig. 3, fig. 6 shows a schematic structural diagram of a cross-chain processing apparatus provided by the embodiment of the present disclosure, as shown in fig. 6, the cross-chain processing apparatus 60 may include:
a first data verification module 610, configured to receive, by a relay link node, first to-be-verified data sent by a first cross-link relay, and perform first verification on the first to-be-verified data, where the first to-be-verified data is generated by the first cross-link relay based on a cross-link processing request initiated on a first application link and directed to target data on a second application link;
a to-be-verified data module 620, configured to generate, by the second inter-link relay, second to-be-verified data when the first verification passes, and send the second to-be-verified data to the second application link node;
the second data verification module 630 is configured to perform second verification on the second to-be-verified data by the second application link node, and process the target data when the second verification passes.
In the apparatus provided in the embodiment of the present disclosure, a first cross-link relay generates first to-be-verified data based on a cross-link processing request initiated on a first application link for target data on a second application link, and sends the first to-be-verified data to a relay link node; and performing first verification on the first data to be verified by the relay link node, generating second data to be verified by the second cross-link relay when the first verification passes, sending the second data to be verified to the second application link node, performing second verification on the second data to be verified by the second application link node, and processing the target data when the second verification passes. Based on the scheme, the method and the device can verify the credibility of the cross-chain transaction, and are beneficial to ensuring the safety and credibility of the cross-chain transaction.
Optionally, when the first verification passes and the second cross-link relay generates second data to be verified, the data to be verified module is specifically configured to:
when the first verification passes, the relay chain node generates a second cross-chain event;
and the second cross-link relay generates second data to be verified when monitoring a second cross-link event.
Optionally, the to-be-verified data module is specifically configured to, when the second cross-link relay monitors the second cross-link event and generates the second to-be-verified data:
when the second cross-link relay monitors a second cross-link event, generating a second existence certificate of the second cross-link event, and taking the second existence certificate as second data to be verified;
the second data verification module is specifically configured to:
the second application link point performs a second verification of the second presence credential.
It is understood that the above modules of the cross-chain processing device in the embodiment of the present disclosure have functions of implementing the corresponding steps of the cross-chain processing device method in the embodiment shown in fig. 3. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above. The modules can be software and/or hardware, and each module can be implemented independently or by integrating a plurality of modules. For the functional description of each module of the test apparatus, reference may be specifically made to the corresponding description of the cross-chain processing method in the embodiment shown in fig. 3, and details are not repeated here.
The present disclosure also provides an electronic device, a readable storage medium, and a computer program product according to embodiments of the present disclosure.
The electronic device includes: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a cross-chain processing method as provided by an embodiment of the disclosure.
Compared with the prior art, the electronic equipment generates first to-be-verified data by a first cross-link relay based on a cross-link processing request initiated on a first application link and aiming at target data on a second application link, and sends the first to-be-verified data to a relay link node; and performing first verification on the first data to be verified by the relay link node, generating second data to be verified by the second cross-link relay when the first verification passes, sending the second data to be verified to the second application link node, performing second verification on the second data to be verified by the second application link node, and processing the target data when the second verification passes. Based on the scheme, the method and the device can verify the credibility of the cross-chain transaction, and are beneficial to ensuring the safety and credibility of the cross-chain transaction.
The readable storage medium is a non-transitory computer readable storage medium storing computer instructions for causing a computer to perform a cross-chain processing method as provided by an embodiment of the present disclosure.
Compared with the prior art, the readable storage medium generates first to-be-verified data by a first cross-link relay based on a cross-link processing request initiated on a first application link and aiming at target data on a second application link, and sends the first to-be-verified data to a relay link node; and performing first verification on the first data to be verified by the relay link node, generating second data to be verified by the second cross-link relay when the first verification passes, sending the second data to be verified to the second application link node, performing second verification on the second data to be verified by the second application link node, and processing the target data when the second verification passes. Based on the scheme, the method and the device can verify the credibility of the cross-chain transaction, and are beneficial to ensuring the safety and credibility of the cross-chain transaction.
The computer program product comprises a computer program which, when executed by a processor, implements a cross-chain processing method as provided by embodiments of the present disclosure.
Compared with the prior art, the computer program product generates first to-be-verified data by a first cross-link relay based on a cross-link processing request initiated on a first application link and aiming at target data on a second application link, and sends the first to-be-verified data to a relay link node; and performing first verification on the first data to be verified by the relay link node, generating second data to be verified by the second cross-link relay when the first verification passes, sending the second data to be verified to the second application link node, performing second verification on the second data to be verified by the second application link node, and processing the target data when the second verification passes. Based on the scheme, the method and the device can verify the credibility of the cross-chain transaction, and are beneficial to ensuring the safety and credibility of the cross-chain transaction.
Fig. 7 illustrates a schematic block diagram of an example electronic device 2000, which can be used to implement embodiments of the present disclosure. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be examples only, and are not meant to limit implementations of the disclosure described and/or claimed herein.
Fig. 7 illustrates a schematic block diagram of an example electronic device 2000, which can be used to implement embodiments of the present disclosure. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be examples only, and are not meant to limit implementations of the disclosure described and/or claimed herein.
As shown in fig. 7, the device 2000 includes a computing unit 2010, which may perform various appropriate actions and processes in accordance with a computer program stored in a Read Only Memory (ROM)2020, or a computer program loaded from a storage unit 2080 into a Random Access Memory (RAM) 2030. In the RAM 2030, various programs and data required for the operation of the device 2000 can also be stored. The computing unit 2010, ROM 2020, and RAM 2030 are coupled to each other via bus 2040. An input/output (I/O) interface 2050 is also connected to bus 2040.
Various components in device 2000 are connected to I/O interface 2050, including: an input unit 2060 such as a keyboard, a mouse, or the like; an output unit 2070 such as various types of displays, speakers, and the like; a storage unit 2080 such as a magnetic disk, an optical disk, and the like; and a communication unit 2090, such as a network card, modem, wireless communication transceiver, etc. The communication unit 2090 allows the device 2000 to exchange information/data with other devices over a computer network, such as the internet, and/or various telecommunication networks.
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), system on a chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.
Program code for implementing the methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowchart and/or block diagram to be performed. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user can provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic, speech, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), Wide Area Networks (WANs), and the Internet.
The computer system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server may be a cloud server, a server of a distributed system, or a server with a combined blockchain.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present disclosure may be executed in parallel or sequentially or in different orders, and are not limited herein as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved.
The above detailed description should not be construed as limiting the scope of the disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.
Claims (11)
1. A method of cross-chain processing, comprising:
the method comprises the steps that a first cross-link relay generates first to-be-verified data based on a cross-link processing request initiated on a first application link and used for target data on a second application link, and sends the first to-be-verified data to a relay link node;
and the relay link node performs first verification on the first data to be verified, so that second data to be verified is generated when the first verification is passed by a second cross-link relay, the second data to be verified is sent to a second application link node, so that the second application link node performs second verification on the second data to be verified, and the target data is processed when the second verification is passed.
2. The method of claim 1, wherein the first cross-link relay generating the first to-be-verified data based on a cross-link processing request initiated on the first application chain for target data on the second application chain comprises:
the first application chain node responds to a cross-chain processing request initiated on the first application chain and aiming at target data on the second application chain to generate a first cross-chain event;
and the first cross-link relay generates first data to be verified when monitoring the first cross-link event.
3. The method of claim 2, wherein the first cross-link relay generating first to-be-verified data upon listening for the first cross-link event comprises:
when a first cross-link relay monitors the first cross-link event, generating a first existence certification of the first cross-link event, and using the first existence certification as first data to be verified;
the relay link node performs first verification on the first to-be-verified data, and the method includes:
the relay link node performs a first verification of the first presence credential.
4. A method of cross-chain processing, comprising:
the method comprises the steps that a relay link node receives first to-be-verified data sent by a first cross-link relay and conducts first verification on the first to-be-verified data, wherein the first to-be-verified data are generated by the first cross-link relay based on a cross-link processing request initiated on a first application link and used for target data on a second application link;
when the first verification passes, a second cross-link relay generates second data to be verified, and the second data to be verified is sent to a second application link node;
and the second application chain link point carries out second verification on the second data to be verified, and processes the target data when the second verification is passed.
5. The method of claim 4, wherein the second cross-link relay generating second data to be verified when the first verification passes comprises:
when the first verification passes, the relay chain node generates a second cross-chain event;
and the second cross-chain relay generates second data to be verified when monitoring the second cross-chain event.
6. The method of claim 5, wherein the second cross-chain relay generating second data to be verified upon listening for the second cross-chain event comprises:
when the second cross-chain relay monitors the second cross-chain event, generating a second existence certification of the second cross-chain event, and taking the second existence certification as second data to be verified;
the first verification of the first to-be-verified data is performed by the second application link node, and the method includes:
a second verification of the second presence credential is performed by a second application link point.
7. A cross-chain processing apparatus comprising:
the data to be verified module is used for generating first data to be verified by the first cross-link relay based on a cross-link processing request initiated on the first application link and aiming at target data on the second application link, and sending the first data to be verified to the relay link node;
the data verification module is used for performing first verification on the first to-be-verified data by the relay link node so that second to-be-verified data is generated by a second cross-link relay when the first verification passes, the second to-be-verified data is sent to a second application link node so that second verification is performed on the second to-be-verified data by the second application link node, and the target data is processed when the second verification passes.
8. A cross-chain processing apparatus comprising:
the first data verification module is used for receiving first to-be-verified data sent by a first cross-link relay by a relay link node and performing first verification on the first to-be-verified data, wherein the first to-be-verified data is generated by the first cross-link relay based on a cross-link processing request initiated on a first application link and used for target data on a second application link;
a to-be-verified data module, configured to generate, by a second inter-link relay, second to-be-verified data when the first verification passes, and send the second to-be-verified data to a second application link node;
and the second data verification module is used for performing second verification on the second to-be-verified data by using a second application link node and processing the target data when the second verification passes.
9. An electronic device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-6.
10. A non-transitory computer readable storage medium having stored thereon computer instructions for causing the computer to perform the method of any one of claims 1-6.
11. A computer program product comprising a computer program which, when executed by a processor, implements the method according to any one of claims 1-6.
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