CN114884672A - Data flow network system, data flow message transmission method and device - Google Patents
Data flow network system, data flow message transmission method and device Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3236—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions
- H04L9/3239—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
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- G06F21/6245—Protecting personal data, e.g. for financial or medical purposes
Abstract
The application discloses a data flow network system, a data flow message transmission method and a device, comprising the following steps: the system comprises a plurality of network platforms of a privacy protection type data trading market and a certificate storage block chain, wherein when a network platform needs to send data circulation messages to other network platforms, the hash value of the data circulation messages to be sent is calculated and used as a certificate storage hash value, the certificate storage hash value is written into the certificate storage block chain, and after the writing is successful, the data circulation messages are sent to other network platforms in a data circulation network system; and after receiving the data circulation message, the other network platforms calculate the hash value of the data circulation message as the hash value to be compared, compare the hash value to be compared with the certificate storage hash value of the data circulation message stored in the certificate storage block chain, and store the received data circulation message when the comparison result is the same. By adopting the scheme, the effective transmission of the data circulation message of the cross-privacy protection type data trading market is realized.
Description
Technical Field
The present application relates to the technical field of multiparty security computing, and in particular, to a data flow network system, a data flow message transmission method and an apparatus.
Background
In the traditional data trading market, the original plaintext data of data commodities are directly traded, the defects that the original data is divulged once sold, the sold data cannot be controlled and abused and the like exist, and a lot of data with high privacy cannot be used for circulation and trading.
At present, in some related technologies, privacy protection type data transaction market products can be provided, based on privacy protection calculation technologies such as multi-party safety calculation and federal learning, original plaintext data is protected from disclosure, only the calculation value of data commodities is traded, the data transaction range is expanded, and data circulation is promoted.
In the existing privacy protection type data trading market, only data commodity trading in the market can be realized, however, the specificity of the data commodity often needs to use data in a plurality of data trading markets simultaneously. For example, the user behavior data of the data holder a in the area a data trading market and the user behavior data of the data holder B in the area B data trading market are combined together to perform horizontal federal learning.
Aiming at the data circulation requirement of the cross-data trading market, the existing privacy protection type data circulation technology cannot provide corresponding functions and services, namely the effective transmission of data circulation messages of the cross-privacy protection type data trading market cannot be realized.
Disclosure of Invention
The embodiment of the application provides a data circulation network system, a data circulation message transmission method and a data circulation message transmission device, which are used for solving the problem that effective transmission of data circulation messages of a cross-privacy protection type data trading market cannot be realized in the prior art.
An embodiment of the present application provides a data flow network system, including: a plurality of privacy protection type data transaction market's network platform to and deposit certificate block chain, wherein:
when the network platform needs to send data circulation messages to other network platforms in the data circulation network system, calculating hash values of the data circulation messages to be sent, and taking the hash values as certificate-storing hash values; writing the certificate-storing hash value into the certificate-storing block chain; after the writing is successful, the data circulation message is sent to other network platforms in the data circulation network system;
after receiving the data flow message, other network platforms calculate the hash value of the data flow message as the hash value to be compared; and comparing the hash value to be compared with the certificate storage hash value of the data circulation message stored in the certificate storage block chain, and storing the received data circulation message when the comparison result is the same.
Further, when the data circulation message is a data commodity shelf loading message, a data commodity shelf unloading message or a data commodity change message, the network platform broadcasts and sends the data circulation message to other network platforms in the data circulation network system after successfully writing the certificate-storing hash value into the certificate-storing block chain;
when the data circulation message is a data commodity order message of a data commodity order, after the certificate-storing hash value is successfully written into the certificate-storing block chain, the network platform sends the data commodity order message to a specified network platform corresponding to the data commodity order in the data circulation network system.
Further, when the data circulation message is a data commodity shelving message, the other network platforms acquire carried data content information from the received data commodity shelving message, and after the data commodity shelving is determined, commodity shelving operation is executed on the platforms of the other network platforms based on the data content information;
when the data circulation message is a data commodity shelf unloading message, other network platforms acquire carried data content information from the received data commodity shelf loading message, and if the data commodity represented by the data content information is in a shelf loading state, commodity shelf unloading operation is executed from the platform based on the data content information;
and when the data circulation message is a data commodity change message, other network platforms acquire the carried data content information from the received data commodity change message, and after the data commodity change is determined, the commodity change operation is executed on the platform of the other network platforms based on the data content information.
Further, the data circulation message carries a unique identification code and a digital signature of the network platform;
and after receiving the data circulation message, the other network platforms verify the carried digital signature by using the public key corresponding to the carried unique identification code.
Further, the network platform is added to the data flow network system in the following manner:
the network platform acquires a platform list of other network platforms currently included in the data flow network system from the seed node equipment of the data flow network system;
and establishing communication connection with other network platforms in the platform list.
Further, the network platform stores the received data circulation messages which are from other network platforms and need to be stored into a local historical message recording table;
and generating a data commodity detail table, an order information table and a settlement information table based on the data circulation information in the history information record table.
The embodiment of the present application further provides a data circulation message transmission method, which is applied to a network platform of a privacy protection type data trading market in a data circulation network system, where the data circulation network system includes network platforms of a plurality of privacy protection type data trading markets, and the method includes:
when data flow information needs to be sent to other network platforms in the data flow network system, calculating a hash value of the data flow information to be sent as a certificate-storing hash value;
writing the certificate-storing hash value into the certificate-storing block chain;
after the writing is successful, the data circulation message is sent to other network platforms in the data circulation network system, so that other network platforms calculate the hash value of the data circulation message after receiving the data circulation message, the hash value is used as a hash value to be compared, the hash value to be compared is compared with the certificate storage hash value of the data circulation message stored in the certificate storage block chain, and when the comparison result is the same, the received data circulation message is stored.
Further, the sending the data flow message to other network platforms in the data flow network system includes:
when the data circulation message is a data commodity shelf loading message, a data commodity shelf unloading message or a data commodity change message, broadcasting and sending the data circulation message to other network platforms in the data circulation network system;
and when the data circulation message is a data commodity order message of a data commodity order, sending the data commodity order message to a specified network platform corresponding to the data commodity order in the data circulation network system.
Further, the method also comprises the following steps:
the data flow network system is added in the following mode:
the network platform acquires a platform list of other network platforms currently included in the data flow network system from the seed node equipment of the data flow network system;
and establishing communication connection with other network platforms in the platform list.
Further, the method also comprises the following steps:
receiving data circulation messages sent by other network platforms;
calculating the hash value of the data flow message as the hash value to be compared;
comparing the hash value to be compared with the certificate storing hash value of the data circulation message stored in the certificate storing block chain,
and when the comparison result is the same, storing the received data circulation message.
Further, the method also comprises the following steps:
when the data circulation message is a data commodity shelving message, acquiring carried data content information from the received data commodity shelving message, and after the data commodity shelving is determined, executing commodity shelving operation on a platform of the data commodity based on the data content information;
when the data circulation message is a data commodity shelf unloading message, acquiring carried data content information from the received data commodity shelf loading message, and if the data commodity represented by the data content information is in a shelf loading state, executing commodity shelf unloading operation from a platform of the data circulation message based on the data content information;
and when the data circulation message is a data commodity change message, acquiring carried data content information from the received data commodity change message, and after the data commodity change is determined, executing commodity change operation on a platform of the data commodity change message based on the data content information.
Further, the received data circulation message carries the unique identification code and the digital signature of other network platforms;
after receiving the data circulation message sent by the other network platform, the method further includes:
and verifying the carried digital signature by using a public key corresponding to the carried unique identification code.
Further, the method also comprises the following steps:
storing received data circulation messages which come from other network platforms and need to be stored into a local historical message recording table;
and generating a data commodity detail table, an order information table and a settlement information table based on the data circulation information in the history information record table.
An embodiment of the present application further provides a data circulation message transmission apparatus, which is applied to a network platform of a privacy protection type data trading market in a data circulation network system, where the data circulation network system includes network platforms of a plurality of privacy protection type data trading markets, the apparatus includes:
the hash value calculation module is used for calculating the hash value of the data circulation message to be sent as a certificate-storing hash value when the data circulation message needs to be sent to other network platforms in the data circulation network system;
a hash value writing module, configured to write the certificate-storing hash value into the certificate-storing block chain;
and the message transmission module is used for sending the data circulation message to other network platforms in the data circulation network system after the writing is successful, so that other network platforms calculate the hash value of the data circulation message after receiving the data circulation message, the hash value is used as a hash value to be compared, the hash value to be compared is compared with the certificate storage hash value of the data circulation message stored in the certificate storage block chain, and when the comparison results are the same, the received data circulation message is stored.
Further, the message transmission module is specifically configured to, when the data circulation message is a data commodity shelf loading message, a data commodity shelf unloading message, or a data commodity change message, broadcast and send the data circulation message to other network platforms in the data circulation network system;
and when the data circulation message is a data commodity order message of a data commodity order, sending the data commodity order message to a specified network platform corresponding to the data commodity order in the data circulation network system.
Further, the method also comprises the following steps:
a system adding module, configured to add to the data flow network system in the following manner:
acquiring a platform list of other network platforms currently included in the data flow network system from seed node equipment of the data flow network system;
and establishing communication connection with other network platforms in the platform list.
Further, the message transmission module is further configured to receive data flow messages sent by other network platforms;
the hash value calculation module is also used for calculating the hash value of the data flow message as the hash value to be compared;
the device, still include:
a hash value comparison module for comparing the hash value to be compared with the certificate storing hash value of the data circulation message stored in the certificate storing block chain,
and the message storage module is used for storing the received data circulation message when the comparison result is the same.
Further, the method also comprises the following steps:
the business processing module is used for acquiring carried data content information from the received data commodity shelving information when the data circulation information is the data commodity shelving information, and executing commodity shelving operation on a platform of the business processing module based on the data content information after the data commodity shelving is determined;
when the data circulation message is a data commodity shelf unloading message, acquiring carried data content information from the received data commodity shelf loading message, and if the data commodity represented by the data content information is in a shelf loading state, executing commodity shelf unloading operation from a platform of the data circulation message based on the data content information;
and when the data circulation message is a data commodity change message, acquiring carried data content information from the received data commodity change message, and after the data commodity change is determined, executing commodity change operation on a platform of the data commodity change message based on the data content information.
Further, the received data circulation message carries the unique identification code and the digital signature of other network platforms;
the device, still include:
and the signature verification module is used for verifying the carried digital signature by using the public key corresponding to the carried unique identification code.
Further, the message storage module is specifically configured to store the received data circulation messages that need to be stored and are from other network platforms into a local historical message record table; and generating a data commodity detail table, an order information table and a settlement information table based on the data circulation information in the history information record table.
Embodiments of the present application further provide an electronic device, including a processor and a machine-readable storage medium storing machine-executable instructions executable by the processor, the processor being caused by the machine-executable instructions to: any of the above data flow message transmission methods is implemented.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements any one of the above data circulation message transmission methods.
Embodiments of the present application further provide a computer program product containing instructions, which when executed on a computer, cause the computer to perform any of the above data flow message transmission methods.
The beneficial effect of this application includes:
in the solution provided by the embodiment of the application, the data circulation network system includes a plurality of network platforms of privacy protection type data trading markets and a certificate storage block chain, for each network platform in the system, when the network platform needs to send data circulation messages to other network platforms, the hash value of the data circulation message to be sent is calculated and used as a certificate-storing hash value, writing the certificate-storing hash value into the certificate-storing block chain, after the writing is successful, sending the data circulation message to other network platforms, after receiving the data flow message, the other network platform calculates the hash value of the data flow message as the hash value to be compared, compares the hash value to be compared with the certificate-storing hash value of the data flow message stored in the certificate-storing block chain, and when the comparison result is the same, storing the data circulation message as a credible message. By adopting the scheme, the network platform can compare the computed hash value to be compared with the certificate-storing hash value stored in the certificate-storing block chain for the received data circulation message to determine whether the received data circulation message is falsified, namely, the effective transmission of the data circulation message of the cross-privacy protection type data trading market is realized, so that the data circulation of the cross-privacy protection type data trading market can be further realized based on the credible data circulation message.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a data flow network system according to an embodiment of the present application;
fig. 2 is a flowchart of a data flow message transmission method according to an embodiment of the present application;
fig. 3 is a flowchart of a data flow message transmission method according to another embodiment of the present application;
FIG. 4 is a diagram illustrating a locally stored history message record table according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a network platform of a privacy-preserving data transaction marketplace according to an embodiment of the present application;
FIG. 6 is a schematic structural diagram of a cross-transaction marketing communication module of a network platform according to an embodiment of the present disclosure;
fig. 7-1 is a schematic structural diagram of a data flow message transmission apparatus according to an embodiment of the present application;
fig. 7-2 is a schematic structural diagram of a data flow message transmission device according to another embodiment of the present application;
fig. 7-3 is a schematic structural diagram of a data flow message transmission apparatus according to another embodiment of the present application;
fig. 7-4 are schematic structural diagrams of a data flow message transmission apparatus according to another embodiment of the present application;
fig. 7-5 are schematic structural diagrams of a data flow message transmission apparatus according to another embodiment of the present application;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to provide a scheme for realizing effective transmission of data circulation messages across privacy-protected data trading markets, the embodiments of the present application provide a data circulation network system, a data circulation message transmission method and a data circulation message transmission device, and the following description is made in conjunction with the accompanying drawings of the specification to describe preferred embodiments of the present application, it should be understood that the preferred embodiments described herein are only used for explaining and explaining the present application, and are not used for limiting the present application. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
An embodiment of the present application provides a data flow network system, as shown in fig. 1, including: a plurality of privacy protection type data transaction market's network platform to and deposit certificate block chain, wherein:
when a network platform needs to send data circulation messages to other network platforms in the data circulation network system, calculating a hash value of the data circulation message to be sent as a certificate-storing hash value, writing the certificate-storing hash value into a certificate-storing block chain, and sending the data circulation messages to other network platforms in the data circulation network system after the certificate-storing hash value is successfully written;
and after receiving the data circulation message, the other network platforms calculate the hash value of the data circulation message as the hash value to be compared, compare the hash value to be compared with the certificate storage hash value of the data circulation message stored in the certificate storage block chain, and store the received data circulation message when the comparison result is the same.
By adopting the scheme, the network platform can compare the computed hash value to be compared with the certificate-storing hash value stored in the certificate-storing block chain for the received data circulation message to determine whether the received data circulation message is falsified, namely, the effective transmission of the data circulation message of the cross-privacy protection type data trading market is realized, so that the data circulation of the cross-privacy protection type data trading market can be further realized based on the credible data circulation message.
In the embodiment of the application, one network platform in the data circulation network system corresponds to one privacy protection type data trading market, data trading in the privacy protection type data trading market and transmission of data circulation messages related to the data trading can be achieved through the corresponding network platform, and data trading among different privacy protection type data trading markets and transmission of data circulation messages related to the data trading are achieved through information interaction among different network platforms. The network platforms included in the data flow network system are all in an equal relation with the same role, so that the system can also be understood as a decentralized data flow network system.
In addition, in the embodiment of the present application, for the transmission of the data flow message between the network platforms, different transmission modes may be adopted based on different types of data flow messages.
For example, when the data circulation message to be sent is a data commodity shelving message, or a data commodity changing message, the data circulation message may be understood as a message for publishing data commodity information, and at this time, in order to enable more other network platforms in the data circulation network system to receive the data circulation message, after successfully writing the certificate hash value into the certificate block chain, the network platform may broadcast and send the data circulation message to other network platforms in the data circulation network system; further, after receiving the data flow message sent in the broadcast manner, the other network platforms determine whether the data flow message has been received, and if it is determined that the data flow message has been received, the data flow message is discarded, and the data flow message is not forwarded to the other network platforms connected to the other network platforms, otherwise, the data flow message may be forwarded to the other network platforms connected to the other network platforms.
For another example, when the data circulation message to be sent is a data commodity order message of a data commodity order, the data circulation message may be understood as a message between two parties of a data commodity transaction, and at this time, after the certificate-storing hash value is successfully written into the certificate-storing blockchain, the network platform may send the data commodity order message to a specified network platform corresponding to the data commodity order in the data circulation network system, thereby implementing point-to-point communication between two network platforms related to the data commodity order.
In this embodiment of the present application, a certain network platform in the data flow network system may stop operating due to a failure occurring within a period of time, and therefore cannot receive data flow messages broadcast-transmitted by other network platforms in the system, and for example, for a network platform newly joining the system, it cannot receive data flow messages broadcast-transmitted by other network platforms before, at this time, for a network platform that resumes operating and a network platform newly joining the system, both the network platform that resumes operating and the network platform that newly joins the system may be capable of acquiring data flow messages broadcast-transmitted by the system within a period of time before through information interaction.
Specifically, the number of data circulation messages broadcast and transmitted in the system in a period of time before may be obtained from another network platform, and if the number is inconsistent with the number of data circulation messages broadcast and transmitted and received by itself, indicating that there is a data circulation message that has not been received, the data circulation message that has not been received is obtained from the other network platform, and for the obtained data circulation message, the hash value to be compared needs to be calculated first, and compared with the corresponding certificate hash value stored in the certificate block chain, so as to implement verification of authenticity of the data circulation message.
In the embodiment of the application, in order to improve the authenticity and reliability of the network platform, the identity of the network platform can be verified by adopting a digital signature. For each network platform added into the system, a pair of secret keys of a digital signature algorithm is generated, the pair of secret keys can be generated inside the added network platform, wherein a private key is kept by the network platform and used for signing the content issued by the network platform, and the public key and the unique identification code of the network platform are sent to other network platforms by other ways (such as e-mails and the like) and used for verifying the signature of the content issued by the network platform by the other network platforms, so that the identity verification of the network platform issuing the content is realized, and the reliability and the safety of data transaction are further improved.
Based on the data flow network system, the embodiment of the present application further provides a data flow message transmission method, and after receiving data flow messages sent by other network platforms, one network platform may perform corresponding processing based on different data flow messages, and the data flow message transmission method provided by the present application is described in detail with specific embodiments in conjunction with the accompanying drawings.
An embodiment of the present application provides a data circulation message transmission method, which is applied to a network platform of a privacy protection type data transaction market in a data circulation network system, where the data circulation network system includes a plurality of network platforms of the privacy protection type data transaction market, as shown in fig. 2, the method includes:
and step 23, after the writing is successful, sending the data flow message to other network platforms in the data flow network system, so that the other network platforms calculate the hash value of the data flow message as the hash value to be compared after receiving the data flow message, compare the hash value to be compared with the certificate storage hash value of the data flow message stored in the certificate storage block chain, and store the received data flow message when the comparison result is the same.
By adopting the method, the network platform can compare the computed hash value to be compared with the certificate-storing hash value stored in the certificate-storing block chain for the received data circulation message to determine whether the received data circulation message is falsified, namely, the effective transmission of the data circulation message of the cross-privacy protection type data trading market is realized, so that the data circulation of the cross-privacy protection type data trading market can be further realized based on the credible data circulation message.
In another embodiment of the present application, there is also provided a data circulation message transmission method applied to a network platform of a privacy-protected data trading market in a data circulation network system, where the data circulation network system includes a plurality of network platforms of privacy-protected data trading markets, as shown in fig. 3, and the method includes:
Specifically, a hash value of a key field of the data flow message may be calculated as a certificate-storing hash value.
For convenience of description, the network platform sending the data circulation message is subsequently referred to as network platform a.
And step 32, the network platform A writes the calculated certificate storage hash value of the data circulation message into the certificate storage block chain.
In this embodiment, the authentication blockchain may be a blockchain specially used for the data flow network system, or may be a common blockchain.
In this step, different sending modes may be adopted based on different types of data flow messages.
When the data circulation message is a data commodity shelf loading message, a data commodity shelf unloading message or a data commodity change message, the data circulation message can be sent to other network platforms in the data circulation network system in a broadcasting mode.
When the data circulation message is a data commodity order message of a data commodity order, the data commodity order message can be sent to a specified network platform corresponding to the data commodity order in the data circulation network system.
For convenience of description, the network platform that receives the data circulation message is subsequently referred to as network platform B.
Correspondingly, if the network platform a calculates the hash value of the key field of the data flow message as the certificate-storing hash value, then, in this step, the network platform B calculates the hash value of the key field of the received data flow message as the hash value to be compared.
If the comparison results are the same, step 36 is performed, and if the comparison results are different, step 37 is performed.
And step 36, the network platform B verifies the digital signature carried in the data circulation message by using the public key corresponding to the unique identification code of the network platform a carried in the received data circulation message.
If the verification is passed, step 38 is performed, and if the verification is not passed, step 37 is performed.
Further, a specific abnormality cause may be suggested.
If the comparison result of the hash value to be compared is different from the comparison result of the verification hash value, the authenticity of the data circulation message is abnormal, and the message content may be tampered.
If the verification of the digital signature carried in the data circulation message is not passed, the identity of the network platform A which sends the data circulation message is abnormal, and the network platform A does not belong to a legal network platform in the data circulation network system.
In this embodiment of the application, the two processes of hash value comparison and digital signature verification performed in the above steps 34 to 37 do not have a strict sequence, and the digital signature verification may be performed first, and then the hash value comparison is performed.
And step 38, the network platform B stores the received data circulation message which is not tampered and comes from the legal network platform.
In the embodiment of the present application, as shown in fig. 4, a network platform B may store a received data circulation message, which is from another network platform and needs to be stored, in a local history message record table;
and generating a data commodity detail table, an order information table and a settlement information table based on the data circulation information in the historical information record table.
Moreover, the data circulation message stored in the history message record table can be compared with the corresponding certificate storage hash value on the certificate storage block chain to verify whether the stored data circulation message is tampered.
Further, if the data flow message is sent in a broadcast manner, the data flow message may also be forwarded to other connected network platforms.
the first business processing mode is to the data commodity shelf information:
when the data circulation message is a data commodity shelving message, acquiring carried data content information from the received data commodity shelving message, and executing commodity shelving operation on a platform of the data commodity based on the data content information after the data commodity shelving is determined;
whether the data commodity is put on shelf or not can be determined by manual examination of managers.
The second business processing mode is to put down the shelf information of the data commodity:
and when the data circulation message is a data commodity shelf unloading message, acquiring carried data content information from the received data commodity shelf loading message, and if the data commodity represented by the data content information is in a shelf loading state, executing commodity shelf unloading operation from a platform of the data circulation message based on the data content information.
The third business processing mode is that aiming at the data commodity change message:
when the data circulation message is a data commodity change message, acquiring carried data content information from the received data commodity change message, and after determining that the data commodity is changed, executing commodity change operation on a platform of the data commodity based on the data content information;
whether to change the data commodity can be determined by manual examination of a manager.
The fourth business processing mode is that aiming at the data commodity order message:
the data commodity order message can be exchanged between the two network platforms aiming at the data commodity issued by one of the network platforms, and the data commodity order message can be various messages related to the order, for example, the data commodity order message can be an order application message, an order confirmation message, an order payment message, an order settlement message and the like, so as to complete operations of transaction application, transaction confirmation, payment, settlement and the like.
For example, if a user of the network platform B is going to purchase a data commodity of the network platform a displayed on the network platform B, the network platform B may generate a data commodity order for the data commodity, send a corresponding data commodity order application message to the network platform a where the data commodity holder is located through the data circulation network system, and complete a purchasing behavior after receiving a data commodity order confirmation message returned by the network platform a.
When the data commodity in the data commodity order needs to be delivered, the interaction of the data commodity can be realized between the data commodity holder and the purchaser through the data transmission between the network platform A and the network platform B. Specifically, the privacy protection type data delivery can be realized by a privacy calculation module of the network platform based on a bottom layer privacy calculation process.
In this embodiment of the present application, as shown in fig. 5, the privacy protection type data transaction market network platform may include a cross-transaction market circulation module, which is configured to implement the step flows of the foregoing method provided in this embodiment of the present application, and the network platform may further include other modules, which are configured to implement various processing flows for data commodities inside the network platform, for example, including: the system comprises a user interface, a user management module, a commodity management module, a calculation management module, an order management module, a privacy protection calculation module, a storage layer and the like, and the cross-transaction market flow module can perform information interaction with other modules based on actual needs.
Further, as shown in fig. 6, the cross-transaction market circulation module of the network platform may specifically include: the system comprises a data communication module, a data encryption and verification module and a local data storage module, wherein the data communication module is used for transmitting data circulation messages with other network platforms, the data encryption and verification module is used for performing operations such as hash value comparison and digital signature verification, and the local data storage module is used for storing the received data circulation messages.
In the embodiment of the application, a new network platform of a privacy protection type data trading market can be introduced into a data circulation network system, and when one network platform wants to join the data circulation network system, a platform list of other network platforms currently included in the data circulation network system can be obtained from seed node equipment of the data circulation network system, and communication connection is respectively established between the platform list and the other network platforms in the platform list.
Because each network platform included in the data circulation network system is a network platform of a privacy protection type data transaction market, and relates to the transaction of privacy protection type data, in order to ensure the transaction security, when one network platform wants to join the data circulation network system, the administrator of each network platform can manually input the platform information of the newly joined network platform into the network platform which is in charge of management, before the administrator manually inputs the platform information, the administrator can manually check the authenticity of the network platform and whether the platform is authorized to join the system, and the like, thereby avoiding the malicious network platform from joining the system as much as possible, and improving the network security.
Based on the same inventive concept, according to the data circulation message transmission method provided in the foregoing embodiment of the present application, correspondingly, another embodiment of the present application further provides a data circulation message transmission apparatus, which is applied to a network platform of a privacy-protected data trading market in a data circulation network system, where the data circulation network system includes a plurality of network platforms of privacy-protected data trading markets, and a schematic structural diagram of the data circulation network system is shown in fig. 7-1, and specifically includes:
a hash value calculation module 71, configured to calculate, when a data flow message needs to be sent to another network platform in the data flow network system, a hash value of the data flow message to be sent, where the hash value is used as a certificate-storing hash value;
a hash value writing module 72, configured to write the certificate-storing hash value into the certificate-storing block chain;
the message transmission module 73 is configured to send the data flow message to another network platform in the data flow network system after the write-in is successful, so that the other network platform calculates a hash value of the data flow message after receiving the data flow message, and uses the hash value as a hash value to be compared, compares the hash value to be compared with the certificate storage hash value of the data flow message stored in the certificate storage block chain, and stores the received data flow message when the comparison result is the same.
Further, the message transmission module 73 is specifically configured to, when the data circulation message is a data commodity shelf loading message, a data commodity shelf unloading message, or a data commodity change message, broadcast and send the data circulation message to other network platforms in the data circulation network system;
and when the data circulation message is a data commodity order message of a data commodity order, sending the data commodity order message to a specified network platform corresponding to the data commodity order in the data circulation network system.
Further, as shown in fig. 7-2, the method further includes:
a system joining module 74, configured to join the data flow network system in the following manner:
acquiring a platform list of other network platforms currently included in the data flow network system from seed node equipment of the data flow network system;
and establishing communication connection with other network platforms in the platform list.
Further, the message transmission module 73 is further configured to receive data flow messages sent by other network platforms;
the hash value calculating module 71 is further configured to calculate a hash value of the data flow message, which is used as a hash value to be compared;
as shown in fig. 7-3, further comprising:
a hash value comparison module 75, configured to compare the hash value to be compared with the certificate storing hash value of the data flow message stored in the certificate storing block chain,
and a message storage module 76 for storing the received data circulation message when the comparison result is the same.
Further, as shown in fig. 7-4, the method further includes:
a service processing module 77, configured to, when the data circulation message is a data commodity shelving message, obtain carried data content information from the received data commodity shelving message, and after it is determined that the data commodity shelving is performed, perform commodity shelving operation on its own platform based on the data content information;
when the data circulation message is a data commodity shelf unloading message, acquiring carried data content information from the received data commodity shelf loading message, and if the data commodity represented by the data content information is in a shelf loading state, executing commodity shelf unloading operation from a platform of the data circulation message based on the data content information;
and when the data circulation message is a data commodity change message, acquiring carried data content information from the received data commodity change message, and after the data commodity change is determined, executing commodity change operation on a platform of the data commodity change message based on the data content information.
Further, the received data circulation message carries the unique identification code and the digital signature of other network platforms;
the device, as shown in fig. 7-5, further comprises:
and the signature verification module 78 is used for verifying the carried digital signature by using a public key corresponding to the carried unique identification code.
Further, the message storage module 77 is specifically configured to store the received data circulation messages that need to be stored and are from other network platforms into a local historical message record table; and generating a data commodity detail table, an order information table and a settlement information table based on the data circulation information in the history information record table.
The functions of the above modules may correspond to the corresponding processing steps in the flows shown in fig. 2 and fig. 3, and are not described herein again.
The data circulation message transmission device provided by the embodiment of the application can be realized by a computer program. It should be understood by those skilled in the art that the above-mentioned module division is only one of many module division, and if the module division is divided into other modules or not, it is within the scope of the present application as long as the data flow message transmission apparatus has the above-mentioned functions.
An electronic device is further provided in an embodiment of the present application, as shown in fig. 8, including a processor 81 and a machine-readable storage medium 82, where the machine-readable storage medium 82 stores machine-executable instructions that can be executed by the processor 81, and the processor 81 is caused by the machine-executable instructions to: the method for transmitting the data flow message is realized.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements any one of the above data circulation message transmission methods.
Embodiments of the present application further provide a computer program product containing instructions that, when executed on a computer, cause the computer to perform any of the above-described data flow message transmission methods.
The machine-readable storage medium in the electronic device may include a Random Access Memory (RAM) and a Non-Volatile Memory (NVM), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus, the electronic device, the computer-readable storage medium, and the computer program product embodiment, since they are substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (16)
1. A data flow network system, comprising: a plurality of privacy protection type data transaction market's network platform to and deposit certificate block chain, wherein:
when the network platform needs to send data circulation messages to other network platforms in the data circulation network system, calculating hash values of the data circulation messages to be sent, and taking the hash values as certificate-storing hash values; writing the certificate-storing hash value into the certificate-storing block chain; after the writing is successful, the data circulation message is sent to other network platforms in the data circulation network system;
after receiving the data flow message, other network platforms calculate the hash value of the data flow message as the hash value to be compared; and comparing the hash value to be compared with the certificate storage hash value of the data circulation message stored in the certificate storage block chain, and storing the received data circulation message when the comparison result is the same.
2. The data circulation network system of claim 1, wherein when the data circulation message is a data commodity shelf loading message, a data commodity shelf unloading message, or a data commodity change message, the network platform broadcasts and sends the data circulation message to other network platforms in the data circulation network system after successfully writing the certificate-storing hash value into the certificate-storing blockchain;
when the data circulation message is a data commodity order message of a data commodity order, after the certificate-storing hash value is successfully written into the certificate-storing block chain, the network platform sends the data commodity order message to a specified network platform corresponding to the data commodity order in the data circulation network system.
3. The data circulation network system according to claim 2, wherein when the data circulation message is a data commodity shelving message, the other network platform acquires data content information carried in the received data commodity shelving message, and after it is determined that the data commodity shelving is performed, a commodity shelving operation is performed on its own platform based on the data content information;
when the data circulation message is a data commodity shelf unloading message, other network platforms acquire carried data content information from the received data commodity shelf loading message, and if the data commodity represented by the data content information is in a shelf loading state, commodity shelf unloading operation is executed from the platform based on the data content information;
and when the data circulation message is a data commodity change message, other network platforms acquire the carried data content information from the received data commodity change message, and after the data commodity change is determined, the commodity change operation is executed on the platform of the other network platforms based on the data content information.
4. The data flow network system of claim 1, wherein the data flow message carries a unique identification code and a digital signature of the network platform;
and after receiving the data circulation message, the other network platforms verify the carried digital signature by using the public key corresponding to the carried unique identification code.
5. The data flow network system of claim 1, wherein the network platform joins the data flow network system by:
the network platform acquires a platform list of other network platforms currently included in the data flow network system from the seed node equipment of the data flow network system;
and establishing communication connection with other network platforms in the platform list.
6. The data flow network system of claim 1, wherein the network platform stores the data flow messages to be stored received from other network platforms into a local historical message record table;
and generating a data commodity detail table, an order information table and a settlement information table based on the data circulation information in the history information record table.
7. A data circulation message transmission method, applied to a network platform of a privacy-preserving data trading market in a data circulation network system, the data circulation network system including a plurality of network platforms of the privacy-preserving data trading market, the method comprising:
when data flow information needs to be sent to other network platforms in the data flow network system, calculating a hash value of the data flow information to be sent as a certificate-storing hash value;
writing the certificate-storing hash value into the certificate-storing block chain;
after the writing is successful, the data circulation message is sent to other network platforms in the data circulation network system, so that other network platforms calculate the hash value of the data circulation message after receiving the data circulation message, the hash value is used as a hash value to be compared, the hash value to be compared is compared with the certificate storage hash value of the data circulation message stored in the certificate storage block chain, and when the comparison result is the same, the received data circulation message is stored.
8. The method of claim 7, wherein the sending the data flow message to other network platforms in the data flow network system comprises:
when the data circulation message is a data commodity shelf loading message, a data commodity shelf unloading message or a data commodity change message, broadcasting and sending the data circulation message to other network platforms in the data circulation network system;
and when the data circulation message is a data commodity order message of a data commodity order, sending the data commodity order message to a specified network platform corresponding to the data commodity order in the data circulation network system.
9. The method of claim 7, further comprising:
the data flow network system is added in the following mode:
the network platform acquires a platform list of other network platforms currently included in the data flow network system from the seed node equipment of the data flow network system;
and establishing communication connection with other network platforms in the platform list.
10. The method of claim 7, further comprising:
receiving data circulation messages sent by other network platforms;
calculating the hash value of the data flow message as the hash value to be compared;
comparing the hash value to be compared with the certificate storing hash value of the data circulation message stored in the certificate storing block chain,
and when the comparison result is the same, storing the received data circulation message.
11. The method of claim 10, further comprising:
when the data circulation message is a data commodity shelving message, acquiring carried data content information from the received data commodity shelving message, and after the data commodity shelving is determined, executing commodity shelving operation on a platform of the data commodity based on the data content information;
when the data circulation message is a data commodity shelf unloading message, acquiring carried data content information from the received data commodity shelf loading message, and if the data commodity represented by the data content information is in a shelf loading state, executing commodity shelf unloading operation from a platform of the data circulation message based on the data content information;
and when the data circulation message is a data commodity change message, acquiring carried data content information from the received data commodity change message, and after the data commodity change is determined, executing commodity change operation on a platform of the data commodity change message based on the data content information.
12. The method of claim 10, wherein the received data flow message carries a unique identification code and a digital signature of the other network platform;
after receiving the data circulation message sent by the other network platform, the method further includes:
and verifying the carried digital signature by using a public key corresponding to the carried unique identification code.
13. The method of claim 10, further comprising:
storing received data circulation messages which come from other network platforms and need to be stored into a local historical message recording table;
and generating a data commodity detail table, an order information table and a settlement information table based on the data circulation information in the history information record table.
14. A data circulation message transmission apparatus applied to a network platform of a privacy-protected data exchange market in a data circulation network system including a plurality of network platforms of privacy-protected data exchanges, the apparatus comprising:
the hash value calculation module is used for calculating the hash value of the data circulation message to be sent as a certificate-storing hash value when the data circulation message needs to be sent to other network platforms in the data circulation network system;
a hash value writing module, configured to write the certificate-storing hash value into the certificate-storing block chain;
and the message transmission module is used for sending the data circulation message to other network platforms in the data circulation network system after the writing is successful, so that other network platforms calculate the hash value of the data circulation message after receiving the data circulation message, the hash value is used as a hash value to be compared, the hash value to be compared is compared with the certificate storage hash value of the data circulation message stored in the certificate storage block chain, and when the comparison results are the same, the received data circulation message is stored.
15. An electronic device comprising a processor and a machine-readable storage medium storing machine-executable instructions executable by the processor, the processor being caused by the machine-executable instructions to: carrying out the method of any one of claims 7 to 13.
16. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method of any one of claims 7 to 13.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170027442A (en) * | 2015-09-02 | 2017-03-10 | 주식회사 시큐웨어 | Portable system for extracting hash of digital file |
| KR20190079324A (en) * | 2017-12-27 | 2019-07-05 | 에이치닥테크놀로지 주식회사 한국영업소 | Method and system for enhancing integrity of batabase based on the block chain system |
| CN111062188A (en) * | 2019-12-26 | 2020-04-24 | 山东爱城市网信息技术有限公司 | Method and equipment for generating and verifying unique identification code based on block chain |
| WO2020134653A1 (en) * | 2018-12-26 | 2020-07-02 | 中国银联股份有限公司 | Method and device for uploading electronic certificate |
| CN111414650A (en) * | 2020-03-25 | 2020-07-14 | 北京创世智链信息技术研究院 | Order processing method and system based on block chain storage certificate |
| CN112330256A (en) * | 2020-11-26 | 2021-02-05 | 欧冶云商股份有限公司 | Raw material transportation logistics track data storage verification method and system based on block chain |
| US20210150521A1 (en) * | 2018-10-31 | 2021-05-20 | Advanced New Technologies Co., Ltd. | Blockchain-based privacy transaction and blockchain-based privacy transaction application methods and apparatuses |
| US20210218549A1 (en) * | 2020-01-09 | 2021-07-15 | Digital Transaction Limited | Methods of proving the immutability of digital records |
| KR20220051409A (en) * | 2019-12-20 | 2022-04-26 | 베이징 징방다 트레이드 씨오., 엘티디. | Blockchain-based signature waybill return method, device, device and readable storage medium |
-
2022
- 2022-04-29 CN CN202210467689.3A patent/CN114884672A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170027442A (en) * | 2015-09-02 | 2017-03-10 | 주식회사 시큐웨어 | Portable system for extracting hash of digital file |
| KR20190079324A (en) * | 2017-12-27 | 2019-07-05 | 에이치닥테크놀로지 주식회사 한국영업소 | Method and system for enhancing integrity of batabase based on the block chain system |
| US20210150521A1 (en) * | 2018-10-31 | 2021-05-20 | Advanced New Technologies Co., Ltd. | Blockchain-based privacy transaction and blockchain-based privacy transaction application methods and apparatuses |
| WO2020134653A1 (en) * | 2018-12-26 | 2020-07-02 | 中国银联股份有限公司 | Method and device for uploading electronic certificate |
| KR20220051409A (en) * | 2019-12-20 | 2022-04-26 | 베이징 징방다 트레이드 씨오., 엘티디. | Blockchain-based signature waybill return method, device, device and readable storage medium |
| CN111062188A (en) * | 2019-12-26 | 2020-04-24 | 山东爱城市网信息技术有限公司 | Method and equipment for generating and verifying unique identification code based on block chain |
| US20210218549A1 (en) * | 2020-01-09 | 2021-07-15 | Digital Transaction Limited | Methods of proving the immutability of digital records |
| CN111414650A (en) * | 2020-03-25 | 2020-07-14 | 北京创世智链信息技术研究院 | Order processing method and system based on block chain storage certificate |
| CN112330256A (en) * | 2020-11-26 | 2021-02-05 | 欧冶云商股份有限公司 | Raw material transportation logistics track data storage verification method and system based on block chain |
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