CN112822180B - Intranet and extranet cross-link communication method and device, computer equipment and storage medium - Google Patents
Intranet and extranet cross-link communication method and device, computer equipment and storage medium Download PDFInfo
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Abstract
The application relates to an intranet and extranet interlinkage communication method, an intranet and extranet interlinkage communication device, computer equipment and a storage medium, wherein an interlinkage request on a source block chain is monitored, when the interlinkage request on the source block chain is monitored, the connection with a target block chain is disconnected, the authenticity of the interlinkage request is verified, interlinkage data carried in the interlinkage request is cached and disconnected, the connection with the source block chain is established, and the interlinkage data is transmitted to the target block chain. In the whole process, inter-network and inter-network inter-link communication is processed, and data are received/transmitted by being respectively connected with a source area block chain and a destination area block chain in the inter-network and the inter-network in an asynchronous mode, so that the inter-network and the inter-network are effectively isolated, and effective and safe inter-network and inter-network inter-link communication is realized.
Description
Technical Field
The present application relates to the field of data security technologies, and in particular, to an intranet and extranet inter-link communication method, an intranet and extranet inter-link communication device, a computer device, and a storage medium.
Background
With the arrival of the big data era, the boundaries of public chains, private chains and alliance chains become more and more fuzzy, and alliance chains of various industries share information and transfer information therebetween are imperative.
The coexistence of multiple strands and even the cooperation of multiple strands are the inevitable trend after the single strand lands. However, since the data on the chains are not communicated with each other due to the heterogeneous underlying systems of the block chains, for the block chains, the cross-chain technology is an important ring for providing services for communication between the block chains, is a key for realizing a value network, and is a bridge for outward expansion and mutual connection of the block chains.
However, due to the shortcomings of the current security technologies, part of the blockchains are deployed in the intranet for the purpose of data security protection, and the network layer oriented cross-chain communication scheme is not suitable for the interaction between the inner and outer network blockchains based on the physical isolation of the network.
Disclosure of Invention
In view of the above, there is a need to provide a secure and effective intranet and extranet cross-link communication method, apparatus, computer device and storage medium.
An internal and external network cross-link communication method comprises the following steps:
monitoring a cross-link request on a source block link;
when a cross-link request on a source block chain is monitored, the connection with a target block chain is disconnected, and the authenticity of the cross-link request is verified;
caching the cross-chain data carried in the cross-chain request when the authenticity of the cross-chain request passes verification;
Disconnecting the source block chain, establishing connection with a target block chain, and transmitting the cross-chain data to the target block chain;
the source block chain and the destination block chain are block chains in different isolation networks respectively, and the different isolation networks comprise an intranet network and an extranet network.
In one embodiment, disconnecting the source blockchain, establishing a connection with the destination blockchain, and transmitting the cross-chain data to the destination blockchain comprises:
disconnecting the source block chain and establishing the connection with the destination block chain;
performing format conversion corresponding to the target block chain on the cross-chain data to obtain the cross-chain data after the format conversion;
and transmitting the cross-link data after format conversion to a destination block chain.
In one embodiment, listening for a cross-chain request on a source block chain comprises:
monitoring a transmission request on a source block chain in real time;
extracting a receiving address carried in the transmission request;
and if the received address represents the heterogeneous chain address, judging that the transmission request is a cross-chain request.
In one embodiment, verifying authenticity of a cross-chain request comprises:
extracting execution sequence data carried by the cross-chain request;
synchronously updating the block head information corresponding to the source block chain and the target block chain according to the execution sequence data;
SPV (simple Payment) Verification is performed on the cross-chain request according to the updated block header information.
In one embodiment, before listening for a cross-chain request on a source block chain, the method further includes:
performing mutual cognitive operation on the source block chain and the destination block chain so as to store verifier information of the destination block chain on the source block chain and enable the verifier information of the source block chain to be stored on the destination block chain;
the internal and external network cross-link communication method further comprises the following steps:
extracting verifier information carried in the cross-chain request and existence certification of the cross-chain request on a source chain;
checking the cross-chain data carried by the cross-chain request through verifier information and presence certification;
if the checking operation passes, adding a preset signature to the cross-chain data;
analyzing a payload field in the cross-link data to obtain a target block link address;
and transmitting the cross-chain data added with the preset signature to the target block chain according to the target block chain address.
In one embodiment, the transmitting the cross-chain data added with the preset signature to the destination blockchain according to the destination blockchain address comprises:
arranging the cross-chain data added with the preset signature into a transmission queue;
And forwarding the data in the transmission queue to a destination block chain by utilizing a Meckel tree structure.
In one embodiment, after performing a checking operation on the cross-chain data carried in the cross-chain request through the verifier information and the presence certificate, the method further includes:
storing the existence certificate to a preset distributed storage system;
after the chain crossing data added with the preset signature is transmitted to the destination blockchain according to the destination blockchain address, the method further comprises the following steps:
receiving a verification passing signal fed back by a target block chain;
forwarding the verification passing signal to the source block chain;
acquiring a cross-chain certification generated on a Merkel tree at the source block chain side, wherein the cross-chain certification is synchronously generated by a source block chain response verification passing signal;
and storing the cross-chain certification to a preset distributed storage system.
An intranet-extranet inter-chain communication apparatus, the apparatus comprising:
the monitoring module is used for monitoring a cross-link request on a source block link;
the verification module is used for disconnecting the connection with the target block chain and verifying the authenticity of the cross-chain request when the cross-chain request on the source block chain is monitored;
the cache module is used for caching the cross-chain data carried in the cross-chain request when the authenticity of the cross-chain request passes verification;
The transmission module is used for disconnecting the connection with the source block chain, establishing the connection with the destination block chain and transmitting the cross-chain data to the destination block chain;
the source block chain and the destination block chain are block chains in different isolation networks respectively, and the different isolation networks comprise an intranet network and an extranet network.
A computer device comprising a memory and a processor, the memory storing a computer program, the processor when executing the computer program implementing the steps of:
monitoring a cross-link request on a source block link;
when a cross-link request on a source block chain is monitored, the connection with a target block chain is disconnected, and the authenticity of the cross-link request is verified;
caching the cross-chain data carried in the cross-chain request when the authenticity of the cross-chain request passes verification;
disconnecting the source block chain, establishing connection with a target block chain, and transmitting the cross-chain data to the target block chain;
the source block chain and the destination block chain are block chains in different isolation networks respectively, and the different isolation networks comprise an intranet network and an extranet network.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
Monitoring a cross-link request on a source block link;
when a cross-link request on a source block chain is monitored, the connection with a target block chain is disconnected, and the authenticity of the cross-link request is verified;
caching the cross-chain data carried in the cross-chain request when the authenticity verification of the cross-chain request passes;
disconnecting the source block chain, establishing connection with a target block chain, and transmitting the cross-chain data to the target block chain;
the source block chain and the destination block chain are block chains in different isolation networks respectively, and the different isolation networks comprise an intranet network and an extranet network.
The inter-network and extranet interlink communication method, the inter-network and extranet interlink communication device, the computer equipment and the storage medium monitor interlink requests on source block chains, when the interlink requests on source block chains are monitored, the connection with target block chains is disconnected, the authenticity of the interlink requests is verified, when the interlink requests pass through, interlink data carried in the interlink requests are cached, the connection with the source block chains is disconnected, the connection with the target block chains is established, and the interlink data are transmitted to the target block chains. In the whole process, inter-network and inter-network inter-link communication is processed, and data are received/transmitted by being respectively connected with a source area block chain and a destination area block chain in the inter-network and the inter-network in an asynchronous mode, so that the inter-network and the inter-network are effectively isolated, and effective and safe inter-network and inter-network inter-link communication is realized.
Drawings
FIG. 1 is a diagram of an application environment of a method for inter-intranet cross-link communication in one embodiment;
FIG. 2 is a flow diagram that illustrates a method for inter-and extranet inter-link communication in one embodiment;
FIG. 3 is a flow diagram of a method for inter-and extranet inter-link communication in another embodiment;
FIG. 4 is a flow chart of an intranet and extranet cross-link communication method in an application example;
FIG. 5 is a flow chart of an intranet and extranet cross-link communication method in another application example;
FIG. 6 is a schematic diagram of an embodiment of an intranet and extranet inter-chain communication device;
FIG. 7 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The intranet and extranet cross-link communication method provided by the application can be applied to the application environment shown in fig. 1. The cross-network relay is respectively connected with an intranet network and an extranet network, the intranet network and the extranet network are two physically isolated networks, block chains exist in the intranet network and the extranet network, taking the case that the block chains in the intranet network need to send data to the block chains in the extranet network as an example, the block chains in the intranet network are source block chains, the block chains in the extranet network are target block chains, the cross-network relay monitors cross-link requests on the source block chains, when the cross-link requests on the source block chains are monitored, the connection with the target block chains is disconnected, the authenticity of the cross-link requests is verified, when the cross-link requests pass through, cross-link data carried in the cross-link requests are cached, the connection with the source block chains is disconnected, the connection with the target block chains is established, and the cross-link data are transmitted to the target block chains. And if not necessary, the target block chain can also feed back the receipt to a cross-network relay, the cross-network relay caches the feedback receipt, the connection between the target block chain and the outer network is disconnected, the connection between the target block chain and the inner network is established again, and the feedback receipt is sent to the inner network to complete one round of inner and outer network cross-network communication.
As shown in fig. 2, the present application provides an intranet-extranet cross-link communication method, which is described by taking the application of the method to the cross-network relay in fig. 1 as an example, and includes the following steps:
s200: and monitoring a cross-chain request on the source block chain.
A source blockchain refers to a blockchain that initiates a cross-chain request. Whether the blockchain in the intranet or the blockchain in the extranet is the source blockchain as long as the blockchain monitors that the cross-chain request is initiated. The monitoring of the block chain in the internal and external networks can be completed by creating a monitoring thread, a transmission request initiated by the block chain in the internal and external networks is monitored, and if the transmission request is the target of the block chain in the network on the other side, the transmission request is judged to be a cross-chain request.
S400: and when a cross-chain request on the source block chain is monitored, disconnecting the cross-chain request from the target block chain, and verifying the authenticity of the cross-chain request.
When monitoring a cross-link request on a source block chain, the cross-link relay disconnects the target block chain and starts to receive the cross-link request from the source block chain, so that data on the source block chain can be effectively prevented from entering the target block chain, direct network isolation between the source block chain and the target block chain is realized, and data safety is ensured. Taking an example that a source block chain is an internal network block chain (referred to as an a block chain) of company a, and a destination block chain is a balance block chain, when a cross-network relay monitors a cross-chain request sent by the a block chain, the cross-network relay directly disconnects the connection with the balance block chain, and receives the cross-chain request sent by the a block chain. After receiving the cross-link request, the cross-network relay verifies the authenticity of the cross-link request, which may specifically adopt authenticity verification based on SPV (Security Protocol Verifier), and ensure the authenticity and validity of the cross-link request.
S600: and when the authenticity of the cross-chain request passes verification, caching the cross-chain data carried in the cross-chain request.
When the authenticity of the cross-chain request passes verification, the cross-chain request is a real cross-chain request task, and cross-chain relay caches cross-chain data carried in the cross-chain request. Specifically, the inter-link data may be stored in a temporary buffer space of the inter-link relay, and the inter-link data may carry a content such as an address of the destination block chain and data that needs to be sent to the destination block chain.
S800: and disconnecting the source block chain, establishing the connection with the destination block chain, and transmitting the cross-chain data to the destination block chain.
The cross-link relay prepares to transmit cross-link data to the destination block chain, at the moment, the connection between the cross-link relay and the source block chain is disconnected, the direct network isolation of the source block chain and the destination block chain is ensured, the connection between the cross-link relay and the destination block chain is established, and the cross-link data is transmitted to the destination block chain. In short, an "inlet" connected with an active blockchain and an "outlet" connected with a destination blockchain can be arranged in the cross-chain relay, a "network gate interface" is arranged between the "inlet" and the "outlet", and the "network gate interface" ensures that only one communication exists between the "outlet" and the "inlet" at the same time, namely that the communication between the "outlet" and the "inlet" is asynchronous.
The intra-extranet inter-network inter-chain communication method includes the steps of monitoring a chain crossing request on a source block chain, disconnecting the chain crossing request from a target block chain when the chain crossing request on the source block chain is monitored, verifying authenticity of the chain crossing request, caching chain crossing data carried in the chain crossing request, disconnecting the connection with the source block chain, establishing the connection with the target block chain, and transmitting the chain crossing data to the target block chain. In the whole process, inter-network and inter-network inter-link communication is processed, and data are received/transmitted by being respectively connected with a source area block chain and a destination area block chain in the inter-network and the inter-network in an asynchronous mode, so that the inter-network and the inter-network are effectively isolated, and effective and safe inter-network and inter-network inter-link communication is realized.
As shown in fig. 3, in one embodiment, S800 includes:
s820: disconnecting the source block chain and establishing the connection with the destination block chain;
s840: performing format conversion corresponding to the target block chain on the cross-chain data to obtain the cross-chain data after the format conversion;
s860: and transmitting the cross-link data after format conversion to a destination block chain.
The source block chain and the destination block chain may have different formats for data, for example, the above-mentioned a block chain and the skyhook block chain have different internal data formats, and in order to prepare for the data to be received, identified and processed by the destination block chain, the inter-chain relay performs format conversion on the inter-chain data corresponding to the destination block chain, and transmits the inter-chain data after format conversion to the destination block chain. Further, data format protocols corresponding to the source block chain and the destination block chain may be stored in the inter-chain relay, and format conversion of inter-chain data is completed based on the two data format protocols.
In one embodiment, listening for a cross-chain request on a source block chain comprises:
monitoring a transmission request on a source block chain in real time; extracting a receiving address carried in the transmission request; and if the received address represents the heterogeneous chain address, judging that the transmission request is a cross-chain request.
In an idle state, a cross-link relay monitors a transmission request on a block chain in real time, the block chain sending the transmission request is a source block chain, the transmission requests may be non-cross-link requests, and the cross-link relay does not need to process the requests without cross-link requests and continues to maintain a monitoring state. Specifically, the inter-link relay may extract a receiving address carried in the transmission request, and if the receiving address is characterized as a heterogeneous link, it indicates that the transmission request is an inter-link request.
In one embodiment, verifying authenticity of a cross-chain request comprises:
extracting execution sequence data carried by the cross-chain request; synchronously updating the block head information corresponding to the source block chain and the target block chain according to the execution sequence data; and performing SPV verification on the cross-chain request according to the updated block header information.
And continuously and synchronously updating block header information in the source block chain and the destination block chain according to execution sequence data carried in the cross-chain request, and performing SPV verification on the cross-chain request according to the continuously updated block header information to ensure the effectiveness of the current cross-chain request.
In practical application, as shown in fig. 4, taking a cross-link transaction as an example, the intranet and intranet cross-link communication method of the present application may include the following stages:
1. listening phase
And monitoring a cross-chain request from a source block chain, reading the cross-chain request and transmitting the cross-chain request to the verification module. If the transaction output is detected to contain the specified receiving address and the heterogeneous chain address is decoded in the additional information, the transaction can be determined to be a cross-chain request transaction.
2. Verification phase
And verifying the authenticity and the execution sequence of the cross-chain request, and further transmitting the real cross-chain request according to the execution sequence. The cross-link relay is required to continuously and synchronously update the block header information, and SPV verification is also required to be carried out on the cross-link transaction, so that the effectiveness of the cross-link transaction is ensured.
3. Execution phase
And performing corresponding format conversion on the cross-link data according to the data structure of the destination link, switching the network connection of the internal network and the external network, and forwarding to the balance link. After passing the check of the check module, the sequence number needs to be checked to prevent replay attacks before the cross-chain contract is invoked. After the transaction is submitted, the execution module needs to wait for the result executed on the chain and return the result to the cross-chain relay in a cross-chain receipt manner, and the transfer flow of the cross-chain receipt is similar to the cross-chain transaction.
In one embodiment, before listening for a cross-chain request on a source block chain, the method further includes:
performing mutual cognitive operation on the source block chain and the destination block chain so as to store verifier information of the destination block chain on the source block chain and enable the verifier information of the source block chain to be stored on the destination block chain;
the internal and external network cross-link communication method further comprises the following steps: extracting verifier information carried in the cross-chain request and existence certification of the cross-chain request on a source chain; checking the cross-chain data carried by the cross-chain request through verifier information and presence certification; if the checking operation passes, adding a preset signature to the cross-chain data; analyzing a payload field in the cross-link data to obtain a target block link address; and transmitting the cross-chain data added with the preset signature to the target block chain according to the target block chain address.
At the beginning, a mutual awareness operation needs to be performed between the source block chain and the destination block chain, and this mutual awareness operation can be understood as that the two block chains complete registration on each other block chain, that is, the verifier information of the destination block chain is stored on the source block chain, and the verifier information of the source block chain is stored on the destination block chain. It is emphasized that the source blockchain and the destination blockchain are only used to distinguish two different blockchains, and there are two blockchains communicating across the chains, which does not specifically refer to which blockchain. Specifically, the two chains send respective creature blocks and chainids (indicating different chains) to each other, completing registration on each other's chain. Since the creation block contains verifier information, after registration, the source block chain and the destination block chain will have verifier information of another chain, and further may carry block header information of another chain. In the process of cross-link interaction, when a cross-link relay receives a cross-link request, verifier information carried in the cross-link request is extracted, the verifier information is used for finishing checking operation of a cross-link request transaction, a preset signature of the cross-link relay can be obtained through checked cross-link transaction, the cross-link relay is proved to verify that the cross-link request transaction is a legal transaction, a payload field (payload) in cross-link data is analyzed to obtain a target block link address, and the cross-link data added with the preset signature is transmitted to the target block link according to the target block link address
In one embodiment, the transmitting the cross-chain data added with the preset signature to the destination blockchain according to the destination blockchain address comprises: arranging the cross-chain data added with the preset signature into a transmission queue; and forwarding the data in the transmission queue to a target block chain by utilizing a Meckel tree structure.
The Merkle trees (Merkle trees) are an essential component of block chains. Just because of the Merkel tree, Etheng nodes can be built and operated on all computers, notebooks and smart phones. In this embodiment, the cross-chain data added with the preset signature is transmitted to the destination block chain in a transmission queue manner, and in addition, in order to enable the data to be transmitted to the destination block chain safely and efficiently, the data is forwarded by using a meikel tree structure.
In one embodiment, after performing a checking operation on the cross-chain data carried in the cross-chain request through the verifier information and the presence certificate, the method further includes:
storing the existence certification to a preset distributed storage system; after the chain crossing data added with the preset signature is transmitted to the destination blockchain according to the destination blockchain address, the method further comprises the following steps:
receiving a verification passing signal fed back by a target block chain; forwarding the verification passing signal to the source block chain; acquiring a cross-chain certification generated on a Merkel tree at the source block chain side, wherein the cross-chain certification is synchronously generated by a source block chain response verification passing signal; and storing the cross-chain certification to a preset distributed storage system.
In this embodiment, both the existence certification of the source blockchain when the cross-chain request is issued and the cross-chain certification after the destination blockchain receipt is received are stored in the preset distributed storage system as the evidence of cross-chain communication. In practical application, after the cross-link data added with the preset signature is transmitted to a target block chain, the target block chain acquires the PMmessage corresponding to the cross-link data based on the Merkel tree, firstly, a verifier in the self chain checks whether a block head in the PMmessage is a part of a source block chain, and then verifies whether Merkle proof of a cross-link transaction is equal to head hash of the block. When all verification passes, the target block chain starts to execute relevant operation, meanwhile, the cross-chain relay returns a signal to the source block chain, the source block chain synchronously generates a cross-chain certificate and stores the cross-chain certificate on an outlet Merkel tree of the source block chain, and the cross-chain certificate can also be backed up and stored in a preset distributed storage system.
In order to describe the technical scheme and effect of inter-network inter-link communication in the above embodiment in detail, the whole process will be described in detail below by taking a cross-link transaction request between a block chain of an a-network (referred to as an a-network chain for short) and a balance chain as an example.
The whole communication process can be seen in fig. 5, which mainly includes the following two stages:
first, registration stage
First, the a-net chain and the balance chain need to be aware of each other. The two chains send respective creature blocks and chainids (indicating different chains) to each other, completing the registration on each other chain. Since the created block contains verifier information, after registration, the a-net and balance chains will have verifier information of the other chain as well as block header information.
Second, cross-chain interaction stage
Assuming that a user on the A network chain needs to send data to a user of a balance chain, firstly, the user can throw out a cross-chain transaction request event by calling a contract on the chain, a cross-chain relay monitors \ collects the cross-chain request, then the cross-chain event and verifier information are packaged together, a proof of existence of the cross-chain transaction request on a source chain is given out based on a Merkel tree at the A network chain side, the verifier information is utilized to complete checking operation of the cross-chain request transaction, and a signature of the cross-chain relay is obtained through the checked cross-chain transaction and enters a cross-chain transaction request inlet of the cross-chain relay. After receiving the submitted cross-link transaction, the cross-link relay caches the data in a data exchange area and disconnects the data from the intranet, obtains a target address by analyzing a payload field of cross-link transaction information, connects the target address with a target network by using an external network interface and forwards the transaction from the A network link to a destination link, namely a balance link. The realization of the cross-chain transaction is to arrange the received cross-chain request into a transaction queue through a cross-chain relay and forward the cross-chain request to a balance chain by utilizing a Merkel tree structure. The skyline acquires the PMmessage through a Merkel tree of a self inlet, firstly, a verifier in the self chain checks whether a block header in the PMmessage is a part of an A network chain, and then verifies whether a Merkle proof of a cross-chain transaction is equal to a header hash of the block. When all verification passes, the balance chain starts to execute relevant operations, meanwhile, the cross-chain relay returns a signal to the A network chain, and the A network chain synchronously generates a cross-chain certificate and stores the cross-chain certificate on an outlet Meckel tree of the A network chain.
In the application example, the intra-network and inter-network inter-chain communication method provides a feasible way for updating data inter-chain of the heterogeneous block chain, an adaptive source block chain platform, a balance chain electronic evidence platform and a cross-chain relay supporting heterogeneous chain communication interaction in a network isolation environment are designed, and the heterogeneous chain can be adaptive to the cross-chain relay and realize information transfer by the cross-chain relay. Because each block on the block chain has a block header containing the hash and the merkel tree of the previous block and a block containing the current block information, the block information of the other block can be obtained only through the mutual registration between the chains. When the cross-link relay receives a cross-link request, a cross-link destination link is confirmed through a call destination field in request data, a corresponding cross-link adapter is selected to complete request forwarding with a cross-link participant, and finally cross-link interaction is achieved. The heterogeneous chain cross-chain data circulation technology facing the internal and external network isolation environment breaks a data island phenomenon between block chain platforms, a convenient mode is provided in the aspect of data sharing on a chain, especially in the aspect of evidence storage data sharing, the requirement that a private chain synchronously stores evidence data to a judicial chain can be met by using a data cross-chain updating technology, and then legal effectiveness is enhanced for the data.
It should be understood that, although the steps in the flowcharts are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in each of the flowcharts described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a part of the steps or stages in other steps.
As shown in fig. 6, the present application also provides an intranet and extranet inter-link communication apparatus, including:
a monitoring module 200, configured to monitor a cross-link request on a source block link;
the verification module 400 is configured to disconnect the destination block chain and verify the authenticity of the inter-chain request when the inter-chain request on the source block chain is monitored;
the caching module 600 is configured to cache the cross-chain data carried in the cross-chain request when the authenticity of the cross-chain request passes verification;
A transmission module 800, configured to disconnect a connection with a source block chain, establish a connection with a destination block chain, and transmit chain-crossing data to the destination block chain;
the source block chain and the destination block chain are block chains in different isolation networks respectively, and the different isolation networks comprise an intranet network and an extranet network.
The intra-extranet inter-network inter-. In the whole process, inter-network and inter-network inter-link communication is processed, and data are received/transmitted by being respectively connected with a source area block chain and a destination area block chain in the inter-network and the inter-network in an asynchronous mode, so that the inter-network and the inter-network are effectively isolated, and effective and safe inter-network and inter-network inter-link communication is realized.
In one embodiment, the transmission module 800 is further configured to disconnect from the source blockchain and establish a connection with the destination blockchain; performing format conversion corresponding to the target block chain on the cross-chain data to obtain the cross-chain data after the format conversion; and transmitting the cross-link data after format conversion to a destination block chain.
In one embodiment, the listening module 200 is further configured to listen to a transmission request on the source block chain in real time; extracting a receiving address carried in the transmission request; and if the received address represents the heterogeneous chain address, judging that the transmission request is a cross-chain request.
In one embodiment, the verification module 400 is further configured to extract execution sequence data carried by the cross-chain request; synchronously updating the block head information corresponding to the source block chain and the target block chain according to the execution sequence data; and performing SPV verification on the cross-chain request according to the updated block header information.
In one embodiment, the intranet and extranet inter-link communication apparatus further includes a registration module, configured to perform mutual cognitive operation on the source block chain and the destination block chain, so as to store verifier information of the destination block chain on the source block chain and store verifier information of the source block chain on the destination block chain;
the verification module 400 is further configured to extract verifier information carried in the cross-chain request and a presence certificate of the cross-chain request on the source chain; checking the cross-chain data carried by the cross-chain request through verifier information and presence certification; if the checking operation passes, adding a preset signature to the cross-chain data; analyzing a payload field in the cross-link data to obtain a target block link address;
The transmission module 800 is further configured to transmit the cross-link data added with the preset signature to the destination blockchain according to the destination blockchain address.
In one embodiment, the transmission module 800 is further configured to queue the cross-chain data added with the preset signature into a transmission queue; and forwarding the data in the transmission queue to a target block chain by utilizing a Meckel tree structure.
In one embodiment, the intranet and extranet inter-link communication apparatus further includes a certificate storage module, configured to store the presence certificate in a preset distributed storage system; receiving a verification passing signal fed back by a target block chain; forwarding the verification passing signal to the source block chain; acquiring a cross-chain certification generated on a Merkel tree at the source block chain side, wherein the cross-chain certification is synchronously generated by a source block chain response verification passing signal; and storing the cross-chain certification to a preset distributed storage system.
For specific limitations of the intranet and extranet cross-link communication device, reference may be made to the above limitations of the intranet and extranet cross-link communication method, which is not described herein again. The modules in the intranet and extranet inter-link communication device can be wholly or partially implemented by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 7. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing data such as communication protocols, formats and the like of the preset source block chain and the target block chain. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement an intranet and extranet cross-link communication method.
Those skilled in the art will appreciate that the architecture shown in fig. 7 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
monitoring a cross-link request on a source block link;
when a cross-link request on a source block chain is monitored, the connection with a target block chain is disconnected, and the authenticity of the cross-link request is verified;
caching the cross-chain data carried in the cross-chain request when the authenticity of the cross-chain request passes verification;
disconnecting the source block chain, establishing connection with a target block chain, and transmitting the cross-chain data to the target block chain;
the source block chain and the destination block chain are block chains in different isolation networks respectively, and the different isolation networks comprise an intranet network and an extranet network.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
disconnecting the source block chain and establishing the connection with the destination block chain; performing format conversion corresponding to the target block chain on the cross-chain data to obtain the cross-chain data after the format conversion; and transmitting the cross-link data after format conversion to a destination block chain.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
Monitoring a transmission request on a source block chain in real time; extracting a receiving address carried in the transmission request; and if the received address represents the heterogeneous chain address, judging that the transmission request is a cross-chain request.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
extracting execution sequence data carried by the cross-chain request; synchronously updating the block head information corresponding to the source block chain and the target block chain according to the execution sequence data; and performing SPV verification on the cross-chain request according to the updated block header information.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
performing mutual cognitive operation on the source block chain and the destination block chain so as to store verifier information of the destination block chain on the source block chain and enable the verifier information of the source block chain to be stored on the destination block chain; extracting verifier information carried in the cross-chain request and existence certification of the cross-chain request on a source chain; checking the cross-chain data carried by the cross-chain request through verifier information and presence certification; if the checking operation passes, adding a preset signature to the cross-chain data; analyzing a payload field in the cross-link data to obtain a target block link address; and transmitting the cross-chain data added with the preset signature to the target block chain according to the target block chain address.
In one embodiment, the processor when executing the computer program further performs the steps of:
arranging the cross-chain data added with the preset signature into a transmission queue; and forwarding the data in the transmission queue to a target block chain by utilizing a Meckel tree structure.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
storing the existence certification to a preset distributed storage system; receiving a verification passing signal fed back by a target block chain; forwarding the verification passing signal to the source block chain; acquiring a cross-chain certification generated on a Merkel tree at the source block chain side, wherein the cross-chain certification is synchronously generated by a source block chain response verification passing signal; and storing the cross-chain certification to a preset distributed storage system.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
monitoring a cross-link request on a source block link;
when a cross-link request on a source block chain is monitored, the connection with a target block chain is disconnected, and the authenticity of the cross-link request is verified;
caching the cross-chain data carried in the cross-chain request when the authenticity of the cross-chain request passes verification;
Disconnecting the source block chain, establishing connection with a target block chain, and transmitting the cross-chain data to the target block chain;
the source block chain and the destination block chain are block chains in different isolation networks respectively, and the different isolation networks comprise an intranet network and an extranet network.
In one embodiment, the computer program when executed by the processor further performs the steps of:
disconnecting the source block chain and establishing the connection with the destination block chain; performing format conversion corresponding to the target block chain on the cross-chain data to obtain the cross-chain data after the format conversion; and transmitting the cross-link data after format conversion to a destination block chain.
In one embodiment, the computer program when executed by the processor further performs the steps of:
monitoring a transmission request on a source block chain in real time; extracting a receiving address carried in the transmission request; and if the received address represents the heterogeneous chain address, judging that the transmission request is a cross-chain request.
In one embodiment, the computer program when executed by the processor further performs the steps of:
extracting execution sequence data carried by the cross-chain request; synchronously updating the block head information corresponding to the source block chain and the target block chain according to the execution sequence data; and performing SPV verification on the cross-chain request according to the updated block header information.
In one embodiment, the computer program when executed by the processor further performs the steps of:
performing mutual cognitive operation on the source block chain and the destination block chain so as to store verifier information of the destination block chain on the source block chain and enable the verifier information of the source block chain to be stored on the destination block chain; extracting verifier information carried in the cross-chain request and existence certification of the cross-chain request on a source chain; checking the cross-chain data carried by the cross-chain request through verifier information and the existence certification; if the checking operation passes, adding a preset signature to the cross-chain data; analyzing a payload field in the cross-link data to obtain a target block link address; and transmitting the cross-chain data added with the preset signature to the target block chain according to the target block chain address.
In one embodiment, the computer program when executed by the processor further performs the steps of:
arranging the cross-chain data added with the preset signature into a transmission queue; and forwarding the data in the transmission queue to a target block chain by utilizing a Meckel tree structure.
In one embodiment, the computer program when executed by the processor further performs the steps of:
storing the existence certification to a preset distributed storage system; receiving a verification passing signal fed back by a target block chain; forwarding the verification passing signal to the source block chain; acquiring a cross-chain certification generated on a Merkel tree at the source block chain side, wherein the cross-chain certification is synchronously generated by a source block chain response verification passing signal; and storing the cross-chain certification to a preset distributed storage system.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware related to instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An intranet-extranet cross-link communication method, the method comprising:
monitoring a cross-link request on a source block link;
when a cross-link request on a source block chain is monitored, disconnecting the cross-link request with a target block chain, and verifying the authenticity of the cross-link request;
when the authenticity of the cross-chain request passes verification, caching cross-chain data carried in the cross-chain request;
disconnecting the source block chain, establishing the connection with the target block chain, and transmitting the cross-chain data to the target block chain;
the source block chain and the destination block chain are block chains in different isolation networks respectively, and the different isolation networks comprise an internal network and an external network;
The verifying the authenticity of the cross-chain request comprises: extracting execution sequence data carried by the cross-chain request; synchronously updating the block head information corresponding to the source block chain and the target block chain according to the execution sequence data; performing SPV verification on the cross-chain request according to the updated block header information;
before the listening for the cross-link request on the source block chain, the method further includes:
performing mutual cognitive operation on the source block chain and the destination block chain to store verifier information of the destination block chain on the source block chain and enable the verifier information of the source block chain to be stored on the destination block chain;
the intranet and extranet cross-link communication method further comprises the following steps: extracting verifier information carried in the cross-chain request and existence certification of the cross-chain request on the source block chain; checking the cross-chain data carried by the cross-chain request through the verifier information and the existence certification; if the checking operation passes, adding a preset signature to the cross-chain data; analyzing the effective load field in the cross-chain data to obtain a target block chain address; and transmitting the cross-chain data added with a preset signature to the target block chain according to the target block chain address.
2. The method of claim 1, wherein disconnecting the source blockchain, establishing the connection with the destination blockchain, and transmitting the inter-chain data to the destination blockchain comprises:
disconnecting the source block chain and establishing the connection with the target block chain;
performing format conversion corresponding to the target block chain on the cross-chain data to obtain cross-chain data after format conversion;
and transmitting the format-converted cross-link data to the destination block chain.
3. The method of claim 1, wherein listening for a cross-chain request on a source block chain comprises:
monitoring a transmission request on a source block chain in real time;
extracting a receiving address carried in the transmission request;
and if the receiving address represents a heterogeneous chain address, judging that the transmission request is a cross-chain request.
4. The method according to claim 1, wherein the transmitting the cross-chain data added with a preset signature to the destination blockchain according to the destination blockchain address comprises:
the cross-chain data added with the preset signature is queued into a transmission queue;
and forwarding the data in the transmission queue to the target block chain by utilizing a Meckel tree structure.
5. The method of claim 1, wherein after performing the checking operation on the cross-chain data carried by the cross-chain request through the verifier information and the presence attestation, the method further comprises:
storing the presence certificate to a preset distributed storage system;
after the transmitting the cross-chain data added with the preset signature to the destination block chain according to the destination block chain address, the method further includes:
receiving a verification passing signal fed back by the target block chain;
forwarding the verification pass signal to the source block chain;
obtaining a cross-chain proof generated on a Merkel tree at the source block chain side, wherein the cross-chain proof is synchronously generated by the source block chain responding to the verification passing signal;
and storing the cross-chain certification to a preset distributed storage system.
6. An intranet-extranet inter-chain communication apparatus, the apparatus comprising:
the monitoring module is used for monitoring a cross-link request on a source block link;
the verification module is used for disconnecting the connection with the target block chain and verifying the authenticity of the cross-chain request when the cross-chain request on the source block chain is monitored;
the cache module is used for caching the cross-chain data carried in the cross-chain request when the authenticity of the cross-chain request passes verification;
The transmission module is used for disconnecting the connection with the source block chain, establishing the connection with the destination block chain and transmitting the cross-chain data to the destination block chain;
the registration module is used for performing mutual cognitive operation on the source block chain and the destination block chain so as to store verifier information of the destination block chain on the source block chain and enable the verifier information of the source block chain to be stored on the destination block chain; the source block chain and the destination block chain are block chains in different isolation networks respectively, and the different isolation networks comprise an internal network and an external network;
the verification module is also used for extracting execution sequence data carried by the cross-chain request; synchronously updating the block head information corresponding to the source block chain and the target block chain according to the execution sequence data; performing SPV verification on the cross-chain request according to the updated block header information;
the verification module is also used for extracting verifier information carried in the cross-chain request and existence certification of the cross-chain request on the source chain; checking the cross-chain data carried by the cross-chain request through verifier information and presence certification; if the checking operation passes, adding a preset signature to the cross-chain data; analyzing a payload field in the cross-link data to obtain a target block link address;
The transmission module is further configured to transmit the cross-link data to which the preset signature is added to the destination block chain according to the destination block chain address.
7. The apparatus of claim 6, wherein the transmission module is further configured to disconnect from a source blockchain and establish a connection with a destination blockchain; performing format conversion corresponding to the target block chain on the cross-chain data to obtain the cross-chain data after format conversion; and transmitting the cross-link data after format conversion to a destination block chain.
8. The apparatus of claim 6, wherein the listening module is further configured to listen for a transmission request on a source block chain in real time; extracting a receiving address carried in the transmission request; and if the received address represents the heterogeneous chain address, judging that the transmission request is a cross-chain request.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 5.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 5.
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| PCT/CN2021/114417 WO2022142405A1 (en) | 2020-12-30 | 2021-08-25 | Cross-chain communication method and apparatus for internal network and external network, computer device, and storage medium |
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| CN115334172B (en) * | 2022-07-20 | 2024-04-19 | 新疆丝路智汇信息科技有限公司 | Block chain protocol processing system and processing method thereof |
| CN115905414B (en) * | 2023-03-03 | 2023-05-16 | 北京和升达信息安全技术有限公司 | Method, system, electronic equipment and medium for synchronizing internal and external network data |
| CN115941693B (en) * | 2023-03-10 | 2023-05-05 | 中国信息通信研究院 | Method, device, equipment and medium for accessing chain group into blockchain |
| CN116886444B (en) * | 2023-09-05 | 2023-12-05 | 腾讯科技（深圳）有限公司 | Cross-chain data processing method, device, computer, storage medium and program product |
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