CN115988056A - Control method of cross-block chain service - Google Patents
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Abstract
The application provides a control method of a cross-block chain service. The method comprises the following steps: sending a building request of a cross-block chain service to a DID server, wherein the building request carries: and receiving service UUID identification, DID service information and service chain description information of the cross-link system, responding to the service chain DID of the establishment request by the DID server, and calling the relay to establish the corresponding service chain based on the service chain DID. The method solves the problem that the authority verification timeliness is insufficient in cross-link communication between different cross-link services in the prior art.
Description
Technical Field
The present application relates to a blockchain technology, and in particular, to a method for controlling a cross-blockchain service.
Background
The block chain is a technology of value internet for communicating different service systems and different application scenes. At present, a block chain technical framework and a service application chain are various, service chain application construction conditions of different service fields and application scenes are different, and how to get through a data isolated island between the block chains is a problem to be solved urgently by the block chain industry.
The cross-chain service platform can provide a data interoperation solution between block chain chains for users. Different organizations can apply for cross-chain service registration business chains provided by the service using platform on the cross-chain service platform. And then, a target service chain needing cross-chain operation can be selected for cross-chain communication, so that value transfer among different application chains is realized.
Although the cross-chain service realizes data intercommunication among the blockchains with different architectures, the application chain identity is verified only by the gateway service in the existing cross-chain service flow at the cross-chain transaction initiation stage, which results in insufficient timeliness and safety for verifying the transaction authority in the complete cross-chain service flow.
Disclosure of Invention
The application provides a control method of a cross-block chain service, which is used for solving the problem that the authority verification in cross-chain communication in the prior art is not timely.
In a first aspect, the present application provides a method for controlling a cross-block chain service, including:
sending a building request of a cross-block chain service to a DID server, wherein the building request carries: service UUID identification, DID service information and service chain description information of the cross-chain system.
And receiving the service chain DID of the DID server responding to the establishment request.
And calling the relay to create a corresponding service chain based on the service chain DID.
In a specific embodiment, before sending the request for establishing the cross-blockchain service to the DID server, the method further includes:
and receiving a service chain creating request sent by a user by using the service UUID identification from the cross-chain platform.
In a specific embodiment, after receiving the service chain DID of the DID server responding to the establishment request, the method further includes:
and sending the service chain DID to the cross-chain platform so that a user can inquire the information of the service chain according to the service chain DID.
In one embodiment, the method further comprises:
and receiving a cross-chain communication request sent by a user by using the service UUID identifier from the cross-chain platform.
And applying cross-link communication to the target chain from the source chain in the cross-link system.
In a specific embodiment, after the cross-chain system source chain applies for cross-chain communication to the target chain, the method further includes:
and calling the service UUID identifier to send a verified statement VC application generated for the cross-chain communication to the DID server.
And receiving the VCID of the VC returned by the DID server, wherein the VCID is generated by the DID server when the target link receives the cross-link communication application.
In a specific embodiment, after receiving the VCID of the verifiable declaration VC returned by the DID server, the method further includes:
and if the cross-link communication is stopped, calling the service UUID identification to send a VC logout request to the DID server.
And receiving the VC logout result of the cross-link communication returned by the DID server.
In a second aspect, a method for controlling a cross-blockchain service includes:
receiving a request for establishing a cross-block chain service sent by a cross-chain system, wherein the request for establishing carries: service UUID identification, DID service information and service chain description information of the cross-chain system.
And searching the service chain pointed by the establishment request according to the DID service information and the service chain description information, and generating a service chain DID corresponding to the service chain according to the service UUID identifier.
And sending the service chain DID to the cross-chain system.
In a specific embodiment, before the receiving a request for establishing a cross-block chain service sent by a cross-chain system, the method further includes:
and receiving the service DID application message sent by the cross-chain system.
And distributing a service UUID identifier for the cross-chain system, and sending the service UUID identifier to the cross-chain system.
In one embodiment, the method further comprises:
and receiving a verifiable statement VC application which is sent by the cross-link system and is generated for cross-link communication.
And if the target chain of the cross-chain communication receives the cross-chain communication application, generating a VC for the cross-chain communication, and sending the VC to the cross-chain system.
In a specific embodiment, after the sending the VC to the inter-chain system, the method further includes:
and receiving the VC logout request sent by the cross-chain system.
And after the VC is cancelled, sending a VC cancellation result to the cross-chain system.
The application provides a control method of a block chain crossing service, which sends a building request of the block chain crossing service to a DID server, wherein the building request carries: service UUID identification, DID service information and service chain description information of the cross-chain system; receiving a service chain DID of the DID server responding to the establishment request; and calling the relay to create a corresponding service chain based on the service chain DID. Compared with the existing control method of the cross-block chain service, the method and the system ensure the effectiveness and reliability of cross-chain communication between different cross-chain services by generating the DID distributed identities for the service chain created by the relay service and the user on the cross-chain platform and by generating the VC and verifying the VC.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic diagram of a cross-block chain communication system according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for controlling a cross-block chain service according to the present application;
fig. 3 is a flowchart of a cross-chain service DID application method according to an embodiment of the present invention;
fig. 4 is a flowchart of a method for generating a business link DID according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for controlling a cross-block chain service according to another embodiment of the present invention;
fig. 6 is a schematic structural diagram of a cross-chain system device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a DID server device according to the present application.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments that can be made by one skilled in the art based on the embodiments in the present application in light of the present disclosure are within the scope of the present application.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the above-described drawings (if any) are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or server.
Description of technical terms:
block chaining techniques: the blockchain is a novel integrated innovation technology which integrates technologies such as cryptography, peer-to-peer networks, consensus mechanisms, intelligent contracts and the like. The block chain technology can communicate different business systems and application scenes, and is an infrastructure for building the value internet.
DID: decentralized identity, decentralized identity system, DID for short. Is a new identity derived and derived from the traditional centralized identity. Mainly refers to the mediation, that is, the ownership, control and management of the own digital identity which is completely owned by the individual or organization, and the right of the part is completely attributed to the user.
The existing cross-chain platform can provide a solution for data interoperation among block chain chains for a user, and different organizations can apply for cross-chain service provided by the platform on the cross-chain service platform to register a business chain. Then, the user can select a target service chain needing cross-chain operation to carry out cross-chain communication, so that value transfer among different application chains is realized. However, in this mode, interoperability problems arise between cross-chain services provided by different organizations. Based on the technical idea, the method and the system for cross-chain communication have the advantages that DID distributed identities are generated for the relay service on the cross-chain platform and the service chain created by the tenant, and the effectiveness of cross-chain communication is ensured through the processes of VC (Verifiable declaration) generation and VC verification.
The control method for the cross-block chain service can be suitable for a block chain communication system. Fig. 1 is a schematic diagram of a cross-block chain communication system according to an embodiment of the present invention. As shown in fig. 1, the system includes: a cross-link system, a DID server device, a cross-link system, and a relay link/relay gateway device. In the system, the cross-link system is used for receiving application information sent by a user through a cross-link platform; the cross-link system device is connected with the DID server device and the relay link/relay gateway device. The DID server provides DID service for the cross-chain system, and the cross-chain system can generate a business chain DID by calling the DID service; the relay link/relay gateway device provides a service link generation service for the cross-link system, and the cross-link system device can call the relay link/relay gateway service to create the service link. The system can realize the service DID application, the service chain DID application and the authority verification in the cross-chain communication process shown in the figure 1.
It should be noted that, in the embodiments of the present disclosure, neither a device included in a blockchain communication system nor a positional relationship between devices of the blockchain communication system is defined. For example, in the block chain communication system architecture, a data storage device may be further included, and the data storage device may be an external memory with respect to the inter-chain system device or the relay chain/relay gateway device, or may be an internal memory integrated in the inter-chain system device or the relay chain/relay gateway device. The cross-link system device can be a PC (personal computer), namely a computer, or a mobile phone, a notebook computer or other terminals.
Fig. 2 is a flowchart of a method for controlling a cross-block chain service according to the present application. With reference to fig. 1 and fig. 2, the process specifically includes:
step S101: the cross-chain system sends a cross-block chain service establishing request to the DID server, wherein the establishing request carries: service UUID (Universal Unique Identifier) identification, DID service information and service chain description information of the cross-chain system.
The service UUID of the cross-chain system identifies an application generation system for identifying the service chain; the DID service information may include information of DID service type, service configuration, etc.; the service chain description information may include information such as a service chain name, an adapter, a service description, and the like.
Step S102: the DID server receives a request for establishing a cross-block chain service sent by a cross-chain system, wherein the request for establishing the cross-block chain service carries: service UUID identification, DID service information and service chain description information of the cross-chain system.
Step S103: and the DID server searches the service chain pointed by the establishment request according to the DID service information and the service chain description information, and generates a service chain DID corresponding to the service chain according to the service UUID identifier. The DID server sends the service chain DID to the cross-chain system.
And after the DID server generates a business chain DID according to the DID service information and the business chain description information, the DID server can provide a business chain information query service for the cross-chain platform through a preset interface. The user can analyze the service chain information by calling DID query service through the cross-chain platform.
Step S104: and after the cross-chain system receives the service chain DID of the DID server responding to the establishment request, the cross-chain system calls the relay to establish the corresponding service chain based on the service chain DID.
And after the cross-chain system receives the service chain DID generated by the DID server based on the establishment request, the cross-chain system calls the relay service to establish the service chain. Optionally, the relay of the cross-chain system call may be a relay chain or a relay gateway. And after the relay link or the relay gateway generates a service link, storing the service link information into a gateway service link database.
The cross-chain system can confirm the business chain identity and the communication state by verifying the business chain DID information in the cross-chain service.
In the existing cross-chain service process, a user can generate an interoperability problem between service chains registered by cross-chain services provided by different mechanisms on a cross-chain platform. And when the cross-link communication is carried out, the cross-link system cannot verify the cross-link communication state in the communication process, so that the user cannot find out the failure of the cross-link communication in time, and the resource waste is caused. Therefore, the cross-link communication state can be checked by adding an independent DID service, so that the timeliness of authority verification in cross-link communication is ensured.
In this embodiment, the DID service is registered for the relay service and the inter-link system through the distributed digital hierarchy, and the identity mutual authentication and the inter-link communication between the multiple inter-link systems are conveniently realized. Compared with the existing cross-block chain service control method, the method and the system have the advantages that the DID distributed identities can be generated for the service chain established by the relay service and the user on the cross-chain platform, and the effectiveness and the reliability of cross-chain communication among different cross-chain services are ensured by generating the VC and verifying the VC.
In the control method of the block chain crossing service, the chain crossing system needs to perform a chain crossing service DID application before the chain crossing system sends a service establishment request to the DID. The cross-chain service DID application process includes the flow shown in fig. 3. Fig. 3 is a flowchart of a cross-chain service DID application method according to an embodiment of the present invention. The method comprises the following steps:
step S201: and the cross-chain system sends a service DID application message to the DID server.
Step S202: and after receiving the service DID application message sent by the cross-link system, the DID server allocates a service UUID identifier for the cross-link system.
And the DID server receives the service DID application message and then creates DID service for the cross-chain system. And, the DID server will assign a service UUID identification to the cross-chain system. The service UUID identification is used for identifying a cross-chain system when the DID server establishes a cross-block chain service.
Step S203: and the DID server sends the generated service UUID identification to the cross-chain system.
Step S204: and the cross-chain system receives the service UUID identification and stores the service UUID identification in the database.
In the control method of the inter-block chain service, the service chain DID generation process includes the flow shown in fig. 4. Fig. 4 is a flowchart of a method for generating a business chain DID according to an embodiment of the present invention. The method comprises the following steps:
step S301: the cross-chain system receives a business chain creating request sent by a user by using the service UUID identification from the cross-chain platform.
The user can send a create or query service chain request to the cross-chain system through the cross-chain platform. For example, a user may apply for creating a Service chain through a BaaS (block chain as a Service) platform to perform cross-chain communication.
The service chain creating request accepted by the cross-chain system comprises service UUID identification, DID service information and service chain description information of the cross-chain system. Optionally, the DID service information may include incoming DID service type and service configuration, etc. The service chain description information may include incoming service chain names, adapters, service descriptions, etc.
Step S302: the cross-chain system calls the DID service to generate a business chain DID.
And the cross-chain system calls DID service and generates a business chain DID according to the information contained in the business chain creating request. And after the service chain DID is generated, the cross-chain system stores the service chain DID into a service chain database. Moreover, the cross-link system also comprises a preset interface, and other platforms can inquire the service link information through the interface.
Step S303: and the cross-link system calls the relay link/relay gateway service to create a service link corresponding to the service link DID.
Step S304: and the cross-chain system sends the service chain DID to the cross-chain platform so that the user can inquire the information of the service chain according to the service chain DID.
The user can not only check the DID of the target chain through the cross-chain platform, but also call the DID query service at the cross-chain platform to analyze the business chain information. For example, a user can obtain information such as a service chain name, a relay chain name, service details, service chain creation time, and the like according to the target chain DID resolution through the BaaS platform.
In the control method for the inter-block chain service, the inter-chain communication process in the inter-chain system further includes a flow shown in fig. 5. Fig. 5 is a flowchart of a method for controlling a cross-block chain service according to another embodiment of the present invention. The method comprises the following steps:
step S401: and the cross-chain system receives a cross-chain communication request sent by a user by using the service UUID identifier from the cross-chain platform.
The cross-link communication request comprises service UUID identification, source chain DID and target chain DID information of the cross-link system.
Step S402: and the cross-chain system applies cross-chain communication to the target chain from the source chain of the cross-chain system according to the received cross-chain communication request, and establishes the cross-chain communication after the target chain agrees.
And after receiving the cross-link communication request, the cross-link system calls the source link to send the cross-link communication request to the target link according to the DID information of the source link and the DID information of the target link. When the target chain agrees to the cross-chain communication request, the cross-chain communication is established.
Step S403: and transmitting a verifiable statement VC application generated for cross-link communication to the DID server by using the cross-link system call service UUID identification.
Step S404: and after the DID server receives a VC application which is sent by the cross-link system and generates a verifiable statement for cross-link communication, the DID server generates a VCID for the cross-link communication and sends the VCID to the cross-link system.
The VCID is generated by the DID server when the target chain receives the cross-chain communication application.
Step S405: the cross-chain system receives the VCID of the VC returned by the DID server.
And the cross-link system receives the cross-link communication VCID sent by the DID server and then stores the VCID into a VCID database.
Step S406: the cross-link system inquires whether cross-link communication is stopped according to a preset frequency; if the power is off, step S407 is executed. Otherwise, step S410 is performed.
Step S407: and the cross-link system calls the service UUID identifier to send a VC logout request to the DID server.
The VC logout request sent by the cross-link system comprises VCID information.
Step S408: the DID server receives a VC logout request sent by a cross-chain system. And after the DID server logs out the VC, sending a VC logging-out result to a cross-link system.
Step S409: and the cross-link system receives a VC logout result of cross-link communication returned by the DID server.
When the VC of the cross-link communication is cancelled, the VCID of the cross-link communication is invalid.
Step S410: the cross-link system inquires whether the cross-link communication VCID is valid; if yes, go to step S412. Otherwise, step S411 is executed.
Step S411: and the cross-link system stops cross-link communication corresponding to the VCID.
And the cross-link system stops cross-link communication corresponding to the failure VCID. And the cross-link system sends the cross-link communication disabling information to the user through the cross-link platform.
Step S412: and starting cross-link communication corresponding to the VCID in the cross-link system, and performing cross-link communication.
Fig. 6 is a schematic structural diagram of a cross-chain system apparatus according to an embodiment of the present invention, as shown in fig. 6, the apparatus includes: the device comprises a control module, a receiving module and a calling module. The control module is used for sending a request for establishing a cross-block chain service to the DID server, wherein the request for establishing carries: service UUID identification, DID service information and service chain description information of the cross-chain system; the receiving module is used for receiving a service chain DID of the DID server responding to the establishment request; and the calling module is used for calling the relay to create a corresponding service chain based on the service chain DID.
The cross-link system apparatus in this embodiment may execute the method embodiments shown in fig. 2 to fig. 5, which have similar implementation principles and technical effects, and are not described herein again.
Fig. 7 is a schematic structural diagram of a DID server device provided in the present application, and as shown in fig. 7, the DID server device 40 includes: a processor 41, a memory 42, and a communication interface 43; wherein, the memory 42 is used for storing executable instructions executable by the processor 41; processor 41 is configured to perform the solution of any of the method embodiments described above via execution of executable instructions.
Alternatively, the memory 42 may be separate or integrated with the processor 41.
Optionally, when the memory 42 is a device separate from the processor 41, the apparatus 40 may further include: and the bus is used for connecting the devices.
The server is configured to execute the technical solution in any of the foregoing method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
The embodiment of the present application further provides a readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the technical solutions provided by any of the foregoing embodiments.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A method for controlling a cross-block chain service is characterized by comprising the following steps:
sending a building request of a cross-block chain service to a DID server, wherein the building request carries: service UUID identification, DID service information and service chain description information of the cross-chain system;
receiving a service chain DID of the DID server responding to the establishment request;
and calling the relay to create a corresponding service chain based on the service chain DID.
2. The method of claim 1, wherein before sending the request for establishing the cross-blockchain service to the DID server, the method further comprises:
and receiving a service chain creating request sent by a user by using the service UUID identification from the cross-chain platform.
3. The method according to claim 1, wherein after receiving the service chain DID requested by the DID server in response to the setup request, further comprising:
and sending the service chain DID to the cross-chain platform so that a user can inquire the information of the service chain according to the service chain DID.
4. The method according to any one of claims 1-3, further comprising:
receiving a cross-chain communication request sent by a user by using the service UUID identifier from the cross-chain platform;
and applying cross-link communication to a target link from the source link of the cross-link system.
5. The method of claim 4, wherein after the cross-chain system source chain applies for cross-chain communication to the target chain, the method further comprises:
calling the service UUID identifier to send a verifiable statement VC application generated for the cross-chain communication to the DID server;
and receiving the VCID of the VC returned by the DID server, wherein the VCID is generated by the DID server when the target link receives the cross-link communication application.
6. The method as claimed in claim 5, wherein after receiving the VCID of the verifiable assertion VC returned by the DID server, the method further comprises:
if the cross-link communication is stopped, calling the service UUID identification to send a VC logout request to the DID server;
and receiving the VC logout result of the cross-link communication returned by the DID server.
7. A method for controlling a cross-block chain service is characterized by comprising the following steps:
receiving a request for establishing a cross-block chain service sent by a cross-chain system, wherein the request for establishing carries: service UUID identification, DID service information and service chain description information of the cross-chain system;
searching the service chain pointed by the establishment request according to the DID service information and the service chain description information, and generating a service chain DID corresponding to the service chain according to the service UUID identifier;
and sending the service chain DID to the cross-chain system.
8. The method of claim 7, wherein before receiving the request for establishing the cross-blockchain service sent by the cross-chain system, the method further comprises:
receiving a service DID application message sent by the cross-chain system;
and distributing a service UUID identifier for the cross-chain system, and sending the service UUID identifier to the cross-chain system.
9. The method according to claim 7 or 8, characterized in that the method further comprises:
receiving a verifiable statement VC application which is sent by the cross-link system and is generated for cross-link communication;
and if the target chain of the cross-chain communication receives the cross-chain communication application, generating a VCID for the cross-chain communication, and sending the VCID to the cross-chain system.
10. The method of claim 9, wherein after sending the VCID to the cross-chain system, further comprising:
receiving a VC logout request sent by the cross-link system;
and after the VC is cancelled, sending a VC cancellation result to the cross-chain system.
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