CN111612591A - Network-switching user credit rating method and device, control equipment and storage medium - Google Patents
Network-switching user credit rating method and device, control equipment and storage medium Download PDFInfo
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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
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
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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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- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2107—File encryption
Abstract
The invention provides a method, a device, a control device and a storage medium for rating the credit of a network switching user, wherein a first user credit rating request initiated by an operator node through a alliance chain is received, and the first user is a network switching user; responding to the first user credit rating request, controlling the nodes in the alliance chain, which store the historical information of the first user, to perform multi-party safety calculation according to a preset model, and obtaining a first user credit rating result; sending a first user credit rating result to the operator node; the embodiment of the invention adopts multi-party safety calculation, so that the credit level of the user can be calculated by using the historical information of the user on the premise of ensuring the privacy of the historical information of the user, the accuracy of the credit level evaluation of the user is improved, and the problem of mutual trust of all parties is effectively solved.
Description
Technical Field
The invention relates to the technical field of internet, in particular to a method and a device for ranking credit of a network-switching user, control equipment and a storage medium.
Background
Currently, the credit rating systems of telecommunication operators for users are different, so that after a user carries a number and changes the network, a new operator needs to reevaluate the credit rating of the user. However, since the usage record of the user at the original operator is used as the privacy data of the original operator, the usage record cannot be provided for the new operator, so that the credit assessment of the user by the new operator is inaccurate, and the user experience is poor.
In the prior art, a mode of building a central node is usually adopted to realize unified storage of data of each party, and a corresponding encryption algorithm is adopted.
However, the above method has problems of private data leakage and mutual trust between the parties.
Disclosure of Invention
Aiming at the problems, the invention provides a method and a device for grading the credit of a network-switching user, control equipment and a storage medium.
In a first aspect, the invention provides a method for rating credit of a network-switched user, comprising the following steps: receiving a first user credit rating request initiated by an operator node through a alliance chain, wherein the first user is a network switching user; responding to the first user credit rating request, controlling the nodes in the alliance chain, which store the historical information of the first user, to perform multi-party safety calculation according to a preset model, and obtaining a first user credit rating result; sending a first user credit rating result to the operator node.
In other optional embodiments, after receiving the first user credit rating request initiated by the operator node through the federation chain, the method further includes: verifying the first user credit rating request; and if the verification is passed, executing the step of performing multi-party safety calculation on the node which holds the history information of the first user in the control alliance chain according to a preset model.
In other optional embodiments, the verifying the first user credit rating request comprises: verifying whether the first user belongs to the operator node.
In another optional implementation manner, after sending the first user credit level result to the operator node, the method further includes: receiving first user credit level information uploaded by an operator node, and writing the first user credit level information into a alliance chain in a block form; the first user credit rating information is obtained by processing the first user credit rating result by the operator node by adopting an asymmetric encryption algorithm.
In other optional embodiments, the operator node processes the first user credit rating result by using an asymmetric encryption algorithm, including: encrypting the first user credit grade result by adopting a public key of an operator node, and digitally signing the first user credit grade result by adopting a private key of the operator node to acquire first user credit grade information; the method further comprises the following steps: receiving public key information broadcast by an operator node; after receiving the first user credit rating information uploaded by the operator node, the method further includes: and performing signature verification on the first user credit level information according to the public key information, and if the first user credit level information passes the signature verification, executing the step of writing the first user credit level information into a alliance chain in a block form.
In other alternative embodiments, the predetermined model is formulated by all nodes in a federation chain together.
In other optional embodiments, the method further comprises: receiving second user credit level information uploaded by an operator node, and writing the second user credit level information into a alliance chain in a block form; the second user is a non-network-switching user, and the credit level information of the second user is obtained by processing a credit level result of the second user by an operator node by adopting an asymmetric encryption algorithm; and the second user credit grade result is obtained by the operator node according to second user historical information and a preset model which are locally stored by the operator node.
In other optional embodiments, the method further comprises: and receiving the preprocessed second user history information uploaded by the operator node, and writing the preprocessed second user history information into the alliance chain in a block form.
In a second aspect, the present invention provides a network user credit rating device, including: the system comprises a receiving module, a sending module and a receiving module, wherein the receiving module is used for receiving a first user credit rating request initiated by an operator node through a alliance chain, and the first user is a network switching user; the computing module is used for responding to the first user credit rating request, controlling nodes in the alliance chain, which store the first user historical information, to perform multi-party safety computation according to a preset model, and obtaining a first user credit rating result; a sending module, configured to send the first user credit level result to the operator node.
In a third aspect, the present invention provides a control apparatus comprising: at least one processor and memory; the memory stores computer-executable instructions; the at least one processor executing the memory-stored computer-executable instructions causes the at least one processor to perform a re-networking user credit rating method as in any of the preceding.
In a fourth aspect, the present invention provides a readable storage medium having stored therein computer-executable instructions that, when executed by a processor, implement a method for re-networking user credit rating as described in any of the preceding items.
The invention provides a method, a device, a control device and a storage medium for rating the credit of a network switching user, wherein a first user credit rating request initiated by an operator node through a alliance chain is received, and the first user is a network switching user; responding to the first user credit rating request, controlling the nodes in the alliance chain, which store the historical information of the first user, to perform multi-party safety calculation according to a preset model, and obtaining a first user credit rating result; sending a first user credit rating result to the operator node; the embodiment of the invention adopts multi-party safety calculation, so that the credit level of the user can be calculated by using the historical information of the user on the premise of ensuring the privacy of the historical information of the user, the accuracy of the credit level evaluation of the user is improved, and the problem of mutual trust of all parties is effectively solved.
Drawings
FIG. 1 is a schematic diagram of a system architecture on which the present invention is based;
FIG. 2 is a flow chart illustrating a method for ranking credit of a network-switched user according to the present invention;
FIG. 3 is a diagram illustrating the architecture of a federation chain upon which the present invention is based;
FIG. 4 is a flow chart illustrating another method for ranking credit of a user who is switched to a network according to the present invention;
FIG. 5 is a schematic structural diagram of a network user credit rating device according to the present invention;
fig. 6 is a schematic diagram of a hardware structure of a control device according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the examples of the present invention will be clearly and completely described below with reference to the accompanying drawings in the examples of the present invention.
The terms to which the present invention relates will be explained first:
number portability: the mobile phone can also be called as number portability and mobile phone number change-free, and particularly, a mobile phone user holding the number of one operator can be switched to the network of other operators to enjoy the telecommunication operation service of other operators. The number portability network can reduce the cost of the user network portability and bring convenience to consumers on one hand, and on the other hand, the number portability network can optimize the market structure, realize effective competition through the control measures of the market and improve the welfare of the consumers.
Federation chain: it refers to a blockchain with several organizations or enterprises participating in management together, each party running one or more nodes, where the data only allows the parties in the system to read, write and send transactions, and records the transaction data together.
Secure multi-party computing: the Multi-Party computing (MPC for short) can realize the cooperative Computation of a function and finally obtain a correct result fairly on the premise of ensuring the privacy of data input by each Party participating in the Computation (any malicious adversary cannot utilize a method of maliciously stopping or retaining process data to deduce the data of the other Party).
The credit rating of the current telecommunication industry is that each operator formulates respective credit rating system according to own business rules, that is, different telecommunication operators have different credit rating systems; in addition, considering that the credit rating of the telecommunication industry is private data of each operator, and integrating many factors such as data security, confidentiality, technology and the like, each operator can not provide user credit rating inquiry service to the outside at present; in summary, the credit rating of the current telecommunication industry has the problems of data islanding and lack of sharing mechanism, so that the credit rating between operators cannot play a greater value. For example, after a user signs on the network, a new operator needs to re-evaluate the credit rating of the network-switching user, and during credit evaluation, the credit evaluation is usually performed through the historical behavior, habits and the like of the user, although the original operator stores a large number of historical records of the network-switching user, the historical records are used as private data of the original operator and cannot be provided for the new operator, and the new operator lacks sufficient data, so that the credit rating evaluation of the network-switching user is inaccurate, and the user experience is poor.
In the prior art, if a credit rating sharing mode is adopted, a mode of building a central node is usually adopted, that is, data is paid to an opposite party, or both parties pay data to a common intermediate platform, so that unified data storage is realized.
Aiming at the problems, the technical idea of the invention is that the data security is ensured by fusing the block chain technology, and the credit rating calculation is ensured to be completed by each operator under the condition of not revealing the data of the operator by adopting a secure multiparty calculation algorithm, so that a safer, more intelligent, more reliable and more open credit rating system is provided for the number portability of the user.
Fig. 1 is a schematic diagram of a system architecture on which the present invention is based, and as shown in fig. 1, a federation chain is formed by a plurality of federation chain nodes, where the federation chain nodes include an operator node, a third party node, and the like, and the third party node may be a government agency, a regulatory agency, a credit investigation institution, and the like. Specifically, terminal devices such as a server belonging to an operator can be used as an operator node to access the federation chain, and terminal devices such as a server belonging to a third party can be used as a third party node to access the federation chain. Wherein nodes in the federation chain are configured to perform the method of the embodiments described below to achieve credit rating for the users of the Web-to-Do.
In a first aspect, an example of the present invention provides a method for rating a credit of a network-switched user, and fig. 2 is a flowchart illustrating the method for rating a credit of a network-switched user according to the present invention. As shown in fig. 2, the method for rating credit of network users comprises the following steps:
In this example, a federation chain is first constructed consisting of a plurality of operator nodes and third party nodes collectively, where the third party nodes include government agencies, regulatory agencies, credit investigation agencies, and the like. Fig. 3 is a schematic diagram of an architecture of a federation chain based on the present invention, and as shown in fig. 3, the federation chain is composed of an operator a node, an operator B node, an operator C node, a government agency node, a regulatory agency node, and a credit investigation agency node. For example, after a user a carries a number to the operator B from the operator a, the carrier operator B initiates a credit rating request about the user a to all nodes in the federation chain through the federation chain.
And 102, responding to the first user credit rating request, and controlling the nodes in the alliance chain, which store the first user historical information, to perform multi-party safety calculation according to a preset model to obtain a first user credit rating result.
In this example, in response to the first user credit rating request, all nodes in the federation chain, where the history information of the first user (i.e., the network switching user) is stored, participate in the multi-party security computation, so that the first user credit rating can be obtained on the premise of ensuring respective data privacy. Still taking fig. 3 as an example, when operator B initiates a credit rating request for the network-switching user a, operator a in the federation chain may participate in the multiparty security computation process in response to the request.
In addition, in the multi-party security computation, multiple parties cooperatively compute a function, that is, the preset model in this example, which is formulated by all nodes in the federation chain as an optional example. Preferably, all parties of a third-party organization (such as a government or a regulatory agency) in the federation chain participate together in making the preset model, and the made preset model is deployed in the federation chain.
Preferably, the preset model may be as shown in formula (1):
where, x ∈ { x1,x2,x3… represents input variables, i.e. historical information of the user, such as duration on the network, amount of consumption, historical credit, etc., n1、n2、n3…, weights corresponding to different history information, wherein the input variables and weights are determined by common negotiation of all nodes in the federation chain.
In this embodiment, all nodes holding history information of the network-switching users in the federation chain participate in the calculation of the preset model, so as to obtain a calculation result, and determine the credit rating of the user according to the calculation result, for example, table 1 is a credit rating based on the present invention, and as shown in table 1, the credit rating of the user is divided into V1、V2、V3、V4、V5Five levels (or possibly divided into more detailed levels) correspond to different credit rates, which increase as the credit rate increases.
TABLE 1
Specifically, after obtaining the credit rating of the network transfer user, the federation chain feeds back the result of the credit rating of the network transfer user to the operator node initiating the request for credit rating of the network transfer user.
In addition, in order to prevent the operator from maliciously obtaining the credit rating of the user who does not belong to the operator, after step 101, the method further includes: verifying the first user credit rating request; and if the verification is passed, executing the step of performing multi-party safety calculation on the node which holds the history information of the first user in the control alliance chain according to a preset model. That is to say, after receiving a first user credit rating request sent by an operator node, a federation link first verifies the request, including verifying whether the first user belongs to the operator node, whether the network switching user belongs to data on the federation link, and the like, if so, performing multi-party security calculation of credit rating, and if not, rejecting the first user credit rating request.
Preferably, after the network forwarding user successfully forwards the network, an advertisement is issued to the federation chain to inform the node user in the federation chain of network forwarding, for example, after the user a carries the number of the operator a to forward the network to the operator B, the advertisement is issued in the federation chain to inform other nodes in the federation chain that the user a is currently affiliated to the operator B for network forwarding. So that when operator B initiates a request for credit rating of user a, other nodes in the federation chain can verify whether user a belongs to operator B based on previously recorded information.
The method for rating the credit of the network-switching user provided by the example of the invention receives a first user credit rating request initiated by an operator node through a alliance chain, wherein the first user is a network-switching user; responding to the first user credit rating request, controlling the nodes in the alliance chain, which store the historical information of the first user, to perform multi-party safety calculation according to a preset model, and obtaining a first user credit rating result; sending a first user credit rating result to the operator node; the embodiment of the invention adopts multi-party safety calculation, so that the credit level of the user can be calculated by using the historical information of the user on the premise of ensuring the privacy of the historical information of the user, the accuracy of the credit level evaluation of the user is improved, and the problem of mutual trust of all parties is effectively solved.
With reference to the foregoing implementation manner, fig. 4 is a flowchart illustrating another network user credit rating method provided by the present invention, and as shown in fig. 4, the network user credit rating method includes:
Step 202, responding to the first user credit rating request, controlling the nodes in the alliance chain, which store the first user historical information, to perform multi-party safety calculation according to a preset model, and obtaining a first user credit rating result.
And 204, receiving the first user credit level information uploaded by the operator node, and writing the first user credit level information into the alliance chain in a block form.
The first user credit rating information is obtained by processing the first user credit rating result by the operator node by adopting an asymmetric encryption algorithm.
The steps 201-203 in this embodiment are similar to the steps 101-103 in the foregoing embodiment, and are not described herein again.
Different from the foregoing embodiment, in this embodiment, the uplink storage of the network-switched user credit level result is further defined, in this embodiment, the first user credit level information uploaded by the operator node is received, and the first user credit level information is written into the alliance chain in the form of a block; the first user credit rating information is obtained by processing the first user credit rating result by the operator node by adopting an asymmetric encryption algorithm.
Continuing with the example of fig. 3, after the operator B obtains the credit rating result of the network-switching user a, the credit rating result of the network-switching user a is asymmetrically encrypted and uplink-stored, so that other nodes in the federation chain record the information of the recalculated credit rating of the network-switching user a.
As an alternative example, the operator node processes the first user credit rating result by using an asymmetric encryption algorithm, including: encrypting the first user credit grade result by adopting a public key of an operator node, and digitally signing the first user credit grade result by adopting a private key of the operator node to acquire first user credit grade information; the method further comprises the following steps: receiving public key information broadcast by an operator node; then after step 201, further comprising: and performing signature verification on the first user credit level information according to the public key information, and if the first user credit level information passes the signature verification, executing the step of writing the first user credit level information into a alliance chain in a block form.
Specifically, the carrying-in party operator node B generates a pair of a public key and a private key, after obtaining the network transfer user a credit level result, the operator node B encrypts the level result by using the public key, digitally signs the level result by using the private key, and broadcasts the encrypted level result and the public key to the alliance chain, so that other nodes in the alliance chain verify the signature information according to the public key to ensure that the network transfer user a is correctly affiliated to the carrying-in party operator node B, and after the verification is passed, the encrypted level result is packaged in a block mode according to a common identification mechanism and written into the alliance chain.
As an alternative example, the method further comprises: and receiving second user credit level information uploaded by the operator node, and writing the second user credit level information into the alliance chain in a block form. The second user is a non-network-switching user, and the credit level information of the second user is obtained by processing a credit level result of the second user by an operator node by adopting an asymmetric encryption algorithm; and the second user credit grade result is obtained by the operator node according to second user historical information and a preset model which are locally stored by the operator node.
Specifically, for the non-network-switching user, the operator may want to uplink the credit rating of the non-network-switching user, at this time, the operator obtains user data from the operator, and screens out input items, such as network duration, consumption amount, historical credit, etc., and inputs these into a preset model to obtain the credit rating result of the non-network-switching user, then uses an asymmetric encryption algorithm to encrypt the credit rating result of the non-network-switching user by using the public key of the operator, and uses the private key of the operator to digitally sign, to obtain an encrypted ciphertext, and then broadcasts the encrypted ciphertext, the public key, and the signature to the federation chain at the same time, so that other nodes in the federation chain use the public key to verify the signature, after confirming that there is no problem, the encrypted ciphertext is blocked and packaged and written into the federation chain according to a consensus mechanism, to sum up the example, the credit rating of the non-network-switching user is uplink stored, the method and the device realize the credit level sharing of the user, further improve the data security and reduce the risk of data tampering.
As an alternative example, the method further comprises: and receiving the preprocessed second user history information uploaded by the operator node, and writing the preprocessed second user history information into the alliance chain in a block form. Specifically, the operator node may perform preprocessing, such as encryption, on the locally stored second user history information (non-network-switching user history information), and then write the preprocessed second user history information into the federation chain; namely, data leakage prevention while data sharing is realized.
The method for grading the credit of the network-switching user comprises the steps of receiving first user credit grade information uploaded by an operator node, and writing the first user credit grade information into a alliance chain in a block form; the first user credit rating information is obtained by processing a first user credit rating result by an operator node by adopting an asymmetric encryption algorithm; that is, the present invention further increases data security and reduces the risk of data tampering by linking the user credit rating results.
In a second aspect, the present invention provides a network user credit rating apparatus, fig. 5 is a schematic structural diagram of a network user credit rating apparatus provided in the present invention, as shown in fig. 5, the network user credit rating apparatus includes:
a receiving module 10, configured to receive a first user credit rating request initiated by an operator node through a federation chain, where the first user is a network transfer user; the calculation module 20 is configured to respond to the first user credit rating request, control a node in the alliance chain, where the first user history information is stored, to perform multi-party security calculation according to a preset model, and obtain a first user credit rating result; a sending module 30, configured to send the first user credit rating result to the operator node.
In other alternative embodiments, the apparatus further comprises a verification module 40; the verification module 40 is configured to verify the first user credit rating request; and if the verification is passed, executing the step of performing multi-party safety calculation on the node which holds the history information of the first user in the control alliance chain according to a preset model.
In other optional embodiments, the verifying the first user credit rating request comprises: verifying whether the first user belongs to the operator node.
In other optional embodiments, the receiving module 10 is further configured to: receiving first user credit level information uploaded by an operator node, and writing the first user credit level information into a alliance chain in a block form; the first user credit rating information is obtained by processing the first user credit rating result by the operator node by adopting an asymmetric encryption algorithm.
In other optional embodiments, the operator node processes the first user credit rating result by using an asymmetric encryption algorithm, including: encrypting the first user credit grade result by adopting a public key of an operator node, and digitally signing the first user credit grade result by adopting a private key of the operator node to acquire first user credit grade information; the receiving module 10 is further configured to receive public key information broadcast by an operator node; the verification module 40 is further configured to: and performing signature verification on the first user credit level information according to the public key information, and if the first user credit level information passes the signature verification, executing the step of writing the first user credit level information into a alliance chain in a block form.
In other alternative embodiments, the predetermined model is formulated by all nodes in a federation chain together.
In other optional embodiments, the receiving module 10 is further configured to: receiving second user credit level information uploaded by an operator node, and writing the second user credit level information into a alliance chain in a block form; the second user is a non-network-switching user, and the credit level information of the second user is obtained by processing a credit level result of the second user by an operator node by adopting an asymmetric encryption algorithm; and the second user credit grade result is obtained by the operator node according to second user historical information and a preset model which are locally stored by the operator node.
In other optional embodiments, the receiving module 10 is further configured to: and receiving the preprocessed second user history information uploaded by the operator node, and writing the preprocessed second user history information into the alliance chain in a block form.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process and corresponding beneficial effects of the foregoing network user credit rating apparatus may refer to the corresponding process in the foregoing method example, and are not described herein again.
The network-switching user credit rating device provided by the invention receives a first user credit rating request initiated by an operator node through a alliance chain through a receiving module, wherein the first user is a network-switching user; the calculation module responds to the first user credit rating request, and controls the nodes in the alliance chain, which store the first user historical information, to perform multi-party safety calculation according to a preset model to obtain a first user credit rating result; a sending module sends a first user credit level result to the operator node; the embodiment of the invention adopts multi-party safety calculation, so that the credit level of the user can be calculated by using the historical information of the user on the premise of ensuring the privacy of the historical information of the user, the accuracy of the credit level evaluation of the user is improved, and the problem of mutual trust of all parties is effectively solved.
In a third aspect, an example of the present invention provides a control device, and fig. 6 is a schematic diagram of a hardware structure of the control device provided in the present invention, as shown in fig. 6, including:
at least one processor 601 and memory 602.
In a specific implementation process, the at least one processor 601 executes the computer-executable instructions stored in the memory 602, so that the at least one processor 601 executes the network user credit rating method as described above, wherein the processor 601 and the memory 602 are connected through the bus 603.
For a specific implementation process of the processor 601, reference may be made to the above method embodiments, which implement the principle and the technical effect similarly, and details of this embodiment are not described herein again.
In the embodiment shown in fig. 6, it should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise high speed RAM memory and may also include non-volatile storage NVM, such as at least one disk memory.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
In a fourth aspect, the present invention provides a readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the method for ranking credit of a network user is implemented.
The readable storage medium described above may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk. Readable storage media can be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary readable storage medium is coupled to the processor such the processor can read information from, and write information to, the readable storage medium. Of course, the readable storage medium may also be an integral part of the processor. The processor and the readable storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the readable storage medium may also reside as discrete components in the apparatus.
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.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (11)
1. A method for rating credit of a network-switched user is characterized by comprising the following steps:
receiving a first user credit rating request initiated by an operator node through a alliance chain, wherein the first user is a network switching user;
responding to the first user credit rating request, controlling the nodes in the alliance chain, which store the historical information of the first user, to perform multi-party safety calculation according to a preset model, and obtaining a first user credit rating result;
sending a first user credit rating result to the operator node.
2. The method of claim 1, wherein after receiving a first user credit rating request initiated by an operator node through a federation chain, further comprising:
verifying the first user credit rating request;
and if the verification is passed, executing the step of performing multi-party safety calculation on the node which holds the history information of the first user in the control alliance chain according to a preset model.
3. The method of claim 2, wherein validating the first user credit rating request comprises:
verifying whether the first user belongs to the operator node.
4. The method according to any of claims 1-3, wherein after sending the first user credit rating result to the operator node, further comprising:
receiving first user credit level information uploaded by an operator node, and writing the first user credit level information into a alliance chain in a block form;
the first user credit rating information is obtained by processing the first user credit rating result by the operator node by adopting an asymmetric encryption algorithm.
5. The method of claim 4, wherein the operator node processes the first user credit rating result using an asymmetric encryption algorithm, comprising:
encrypting the first user credit grade result by adopting a public key of an operator node, and digitally signing the first user credit grade result by adopting a private key of the operator node to acquire first user credit grade information;
the method further comprises the following steps:
receiving public key information broadcast by an operator node;
after receiving the first user credit rating information uploaded by the operator node, the method further includes:
and performing signature verification on the first user credit level information according to the public key information, and if the first user credit level information passes the signature verification, executing the step of writing the first user credit level information into a alliance chain in a block form.
6. A method according to any one of claims 1 to 3, wherein the predetermined model is formulated jointly by all nodes in a federation chain.
7. The method according to any one of claims 1-3, further comprising:
receiving second user credit level information uploaded by an operator node, and writing the second user credit level information into a alliance chain in a block form;
the second user is a non-network-switching user, and the credit level information of the second user is obtained by processing a credit level result of the second user by an operator node by adopting an asymmetric encryption algorithm; and the second user credit grade result is obtained by the operator node according to second user historical information and a preset model which are locally stored by the operator node.
8. The method of claim 7, further comprising: and receiving the preprocessed second user history information uploaded by the operator node, and writing the preprocessed second user history information into the alliance chain in a block form.
9. A network-switched user credit rating apparatus, comprising:
the system comprises a receiving module, a sending module and a receiving module, wherein the receiving module is used for receiving a first user credit rating request initiated by an operator node through a alliance chain, and the first user is a network switching user;
the computing module is used for responding to the first user credit rating request, controlling nodes in the alliance chain, which store the first user historical information, to perform multi-party safety computation according to a preset model, and obtaining a first user credit rating result;
a sending module, configured to send the first user credit level result to the operator node.
10. A control apparatus, characterized by comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of re-networking user credit rating of any of claims 1 to 8.
11. A readable storage medium having computer executable instructions stored thereon which, when executed by a processor, implement a method of relaying user credit rating as claimed in any one of claims 1 to 8.
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