CN109523362B - Second-hand house transaction system and method based on 5G architecture and block chain - Google Patents
Second-hand house transaction system and method based on 5G architecture and block chain Download PDFInfo
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Abstract
A second-hand room transaction system and a method based on a 5G architecture and a blockchain are provided, wherein the transaction system comprises: a service platform for comprising: generating a secret key, registering the identity of a user, identifying communication equipment and user operation and publishing information online; the 5G platform is used for acquiring dynamic information of a user and running a block chain and an intelligent contract, wherein the 5G platform and the service platform are communicated with each other; and the distributed data interface is used for the 5G platform to communicate with an external system of a related business department in the second-hand house transaction process, wherein the distributed data interface is arranged at one end of the external system. The method comprises the following steps: draft house buying and selling contract, qualification verification, designated deposit or collection account, confirmation of transacted user and user procedure verification. The invention has the advantages that the problems of authenticity of house source information and trust between buyers and sellers in the prior second-hand house transaction process are solved through the combination of the prior 5G technology and the block chain technology.
Description
Technical Field
The invention relates to the technical field of 5G communication and/or block chain, in particular to a second-hand house transaction system and method based on a 5G architecture and a block chain.
Background
With the increasing of the regulation and control force of a government to newly built commodity houses, the expansion of stock house markets and the requirement of building a green society, second-hand house transaction becomes a main form of house markets developed in the future, but many problems also occur. In order to reduce the transaction risk, the transaction parties often conduct transactions in an intermediary corporate mode. Two parties of the second-hand house purchase and sale are connected together through the intermediary company, the intermediary provides services such as inter-house connection, communication and user procedure handling, and the two parties of the house purchase and sale pay fees according to agreement. The intermediary company mode plays an important role in ensuring the security of second-hand house transaction and reducing the technical difficulty of transaction. However, in the intermediary mode, the transaction party pays a very high fee, most of information acquisition, information of the buyer and the seller, house information and the like in the transaction link are carried out by human participation in evaluation and judgment, the influence of personnel is large, and the mobility of personnel of the intermediary company is large, so that great risk is brought to the transaction party and the seller.
In order to reduce the problems brought by the intermediary company mode and reduce the high intermediary fee, various second-hand house online trading systems are popular with two trading parties, but the systems have the following problems:
1) the information release is lack of authenticity, and a lot of false information floods the websites, so that great interference is brought to normal transactions.
2) Such website releases provide only relevant house information, do not have technical support in the middle of a transaction, and lack authoritative verification and evaluation.
3) The integrity evaluation of the parties involved in the transaction is lacked, and the transaction risk is increased.
4) There is no way to supervise the authenticity of the parties involved in the transaction.
Disclosure of Invention
The invention solves the problems of authenticity of house source information and trust between buyers and sellers in the prior second-hand house transaction process by combining the prior 5G technology and the block chain technology; by introducing the intelligent contract and the block chain technology, the transaction process of the invention has non-repudiation and greatly saves the labor cost; through the 5G technology, the operability of the invention is stronger, the application scene is wider, meanwhile, the identifiability of the data uploading equipment or the data receiving equipment is ensured by utilizing the mobile edge computing function in the 5G technology, and then the identification of the equipment and the identity of an operator can be realized through a specific verification method, thereby ensuring the authenticity of information. The idea of the invention will be illustrated below by a brief description of the 5G technique and the blockchain technique:
the blockchain technique is a decentralized recording technique. Nodes participating in accounting do not belong to the same organization, and trust is not needed among the nodes. The data on the blockchain is commonly maintained by the nodes, and each node participating in the blockchain network can copy a complete transaction record, so that the change of the existing record is almost impossible. The blockchain has the characteristics of non-tamper-ability, traceability, anonymity, openness, collective maintainability, decentralization and the like.
The intelligent contract is an important function of a block chain, the traditional contract means that two or more parties restrict respective authority and behaviors through a protocol, the two or more parties must trust, and the intelligent contract does not need to trust each other, because the intelligent contract is defined by codes and can be enforced by the codes, the intelligent contract is completely automatic and cannot intervene.
The block chain and the intelligent contract thereof are applied to an academic record query system, academic degree information is recorded through the block chain, and the intelligent contract comprises the following steps: the process of credit calculation, academic review and academic information query avoids hidden troubles caused by human participation as much as possible. However, the block chain technology has disadvantages that the identity of data uploading personnel cannot be well verified in the data chaining process, and the security of the uploaded data cannot be well guaranteed, so that the problem of excessive human participation is solved by using the block chain technology, and besides, the problem of accuracy of information sources needs to be solved, namely, the legality and non-repudiation of the data input terminal are guaranteed.
The novel architecture of the fifth generation mobile communication (5G) system provides a reliable identity authentication mode for the blockchain. Mobile Edge Computing (MEC) provides IT service environment, computation and storage functions within a Radio Access Network (RAN). Because the MEC is closer to the user side, the capability opening subsystem can provide dynamic information of the user in real time, and further the function that the traditional network architecture is inconvenient to complete is realized.
According to the above thought and aiming at the problems in the prior second-hand house transaction process, according to one aspect of the invention, a second-hand house transaction system based on a 5G architecture and a blockchain is disclosed, which comprises: a service platform for comprising: generating a secret key, registering the identity of a user, identifying communication equipment and user operation and publishing information online; the 5G platform comprises a mobile edge computing host and is used for acquiring dynamic information of a user and running a block chain and an intelligent contract, wherein the 5G platform and the service platform are communicated with each other; and the distributed data interface is used for the 5G platform to communicate with an external system of a related business department in the second-hand house transaction process, wherein the distributed data interface is arranged at one end of the external system.
Preferably, the service platform includes: the online information release module is used for releasing house trading information and inquiring the house trading process; the security management module is used for identity registration and management of the user and identity identification in the subsequent request process; and the key random generation module is used for generating a symmetric key, encrypting the symmetric key by the public key of the corresponding encryption terminal and then sending the encrypted key to the corresponding encryption terminal by the 5G platform.
Preferably, the mobile edge calculation host includes: the communication module is used for acquiring dynamic information of a user and communication between the 5G platform and the service platform; the capability opening module is used for providing an IT development environment, running a block chain and a corresponding intelligent contract program and matching the mobile edge computing host to carry out mobile edge computing on the user mobile equipment; and the storage module is used for storing the related data.
More preferably, the intelligent contract in the capability opening module is used for comprising: and (4) checking the house sale qualification, checking the house transaction contract, checking the issuance of the public accumulation fund, checking the loan and checking the qualification of the past household.
Preferably, the distributed data interface includes: and the house management service interface, the banking service interface and the public deposit service interface are respectively used for communication between the 5G platform and a house management system, a banking system and a public deposit management system which are not the second-hand house transaction system, wherein each distributed data interface is provided with a corresponding encryption terminal and is used for decrypting received encrypted data or encrypting and sending data of the external system.
According to another aspect of the invention, a second-hand room transaction method is disclosed, which comprises the following steps: the buyer and the seller log in the service platform to draft a house buying and selling contract, and then the service platform sends the drafted house buying and selling contract to the 5G platform, so that the drafted house buying and selling contract is recorded in the block chain by the 5G platform; after receiving the drafted house buying and selling contract, the 5G platform triggers a corresponding intelligent contract, so that the platform automatically communicates with an external system through a distributed data interface to perform qualification verification on a buyer and a seller; after the qualification audit of the buyer and the seller passes, the buyer and the seller sign a contract, the buyer stores the initial payment into an appointed deposit account, the seller appoints a collection account, and the processes are recorded in a block chain; after the buyer and the seller transact to the housing management department and complete the specific post-house procedure, any party of the buyer and the seller logs in the service platform to initiate the post-house procedure to complete the confirmation; the intelligent contract is communicated with an external system through a distributed data interface, so that the user procedure and the completion condition of the user procedure are checked, and the obtained user procedure is recorded in a block chain by the 5G platform after the checking is passed; the intelligent contract automatically extracts the first payment from the specified account of the buyer and inputs the first payment into the specified account of the seller, and then the process is uploaded to the block chain to complete the transaction process of the second-hand house.
Further, before step S1, the method further includes: operating an authentication process, the operating the authentication process comprising: when the buyer and the seller send out a draft house buying and selling contract request, the service platform sends operation verification to the user through the 5G platform, and the operation verification comprises the following steps: voice recognition, fingerprint recognition, face recognition and/or eye recognition to verify the identity of the operator.
Further, the second-hand room transaction method further comprises the following steps: a registration process for a user, the registration process for the user comprising: the user logs in the service platform to register the account and uploads the account, and the method comprises the following steps: identity information, operation verification information, a communication address and a designated bank account, wherein the identity information comprises: name, gender and identification number; the operation verification information includes: voice, fingerprint, face and face feature identification information and/or eyeball feature identification information; the communication address includes: a fixed broadband IP address and/or a mobile phone number; the service platform sends the identity information, the operation verification information, the communication address and the designated bank account to the 5G platform, and then uploads the identity information, the operation verification information, the communication address and the designated bank account to the block chain; the identity information, the communication address and the designated bank account are communicated with a corresponding external system through a corresponding distributed data interface by an intelligent contract in a 5G platform, so that the identity information, the communication address and the designated bank account are respectively audited; after the verification is passed, the 5G platform initiates operation verification to the communication address in the corresponding account and requests to bind the mobile phone; and when the 5G platform finishes auditing by comparing the operation verification information and obtains the information of the confirmation binding mobile phone replied by the user, the mobile edge computing host acquires the mobile equipment identification code of the mobile phone of the user, associates the mobile equipment identification code with the information of the user and uploads the mobile equipment identification code to the block chain, so that the registration process of the user is finished.
Further, the process of communicating with the external system by the distributed data interface includes: after receiving an external system communication request from the intelligent contract, the 5G platform sends the request to the service platform; after receiving the external system communication request, the service platform generates a symmetric secret key by a secret key random generation module in the service platform and sends the symmetric secret key to the 5G platform; the 5G platform encrypts the symmetric secret key by using a public key of an encryption terminal corresponding to a distributed data interface connected with the external system and then sends the encrypted secret key to the encryption terminal; the encryption terminal obtains the symmetric secret key after being decrypted by a private key of the encryption terminal, and sends the symmetric secret key to a corresponding external system through the distributed data interface; and then, the external system and the 5G platform communicate with each other through a corresponding data distributed interface and the symmetric key, wherein the encryption terminal is matched with the distributed data interface for use.
Further, after receiving the house buying and selling contract, the 5G platform triggers a corresponding intelligent contract, so as to automatically communicate with an external system through a corresponding distributed data interface, and thus perform qualification audit on the buyer and the seller, wherein the qualification audit comprises: and (4) checking the house sale qualification, checking the house transaction contract, checking the issuance of the public accumulation fund, checking the loan and checking the qualification of the past household.
The invention has the advantages that: the invention solves the problems of authenticity of house source information and trust between buyers and sellers in the prior second-hand house transaction process by combining the prior 5G technology and the block chain technology; by introducing the intelligent contract and the block chain technology, the transaction process of the invention has non-repudiation and greatly saves the labor cost; through the 5G technology, the operability of the invention is stronger, the application scene is wider, meanwhile, the identifiability of the data uploading equipment or the data receiving equipment is ensured by utilizing the mobile edge computing function in the 5G technology, and then the identification of the equipment and the identity of an operator can be realized through a specific verification method, thereby ensuring the authenticity of information.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic diagram showing the composition of the second-hand house transaction system of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Fig. 1 is a schematic diagram of the second-hand room transaction system according to the present invention. Wherein the second-hand room transaction system comprises: the system comprises a service platform located at the cloud end, a Mobile Edge Computing (MEC) host located at the 5G operator side, and an encryption terminal and a distributed data interface located at each external system side. And the external system is accessed to the 5G platform through the distributed data interface, and then the 5G platform and the service platform are communicated with each other. The composition of each part of the system will be explained below:
specifically, the service platform comprises a plurality of servers located at the cloud end and a service system thereof, wherein the service system comprises: the online information issuing module, the security authentication module and the key random generation module. The online information publishing module is used for publishing house trading information and inquiring house trading progress. Wherein, the house trading information includes: house source selling information and house purchasing demand information; the inquiry of house transaction progress is limited to the buyer and the seller. The safety management module is used for identity registration and management of the user and identity identification in the subsequent request process. And the secret key random generation module is used for generating a symmetric secret key, sending the symmetric secret key to the corresponding encryption terminal by the 5G platform after the symmetric secret key is encrypted by the public key of the corresponding encryption terminal, and further being used for encrypted communication between the service platform and a specific system.
More specifically, in the security management module, the identification of the user includes: the unique communication addresses of the house management department, the bank and the accumulation fund management department in the service platform respectively comprise: network IP address and its physical access address; when the systems corresponding to the house management department, the bank and the public deposit management department request conversation, the 5G platform obtains the communication address of the conversation request through the communication module in the MEC host, and the service platform compares the communication address with the communication address registered in advance, so that the communication identities of the house management department user, the bank user and the public deposit management department user are identified. The management of the identity of the user comprises: when a user registers an account of a service platform, the user requests to bind the International Mobile Equipment Identity (IMEI) and the Mobile phone number of the Mobile phone of the user, so as to manage the identity of the user. For example, in the second-hand house transaction process, after the service bottle body respectively identifies the buyer and the seller to confirm the transaction, the service platform associates the IMEI code and the mobile phone number of the buyer and the seller, and then the communication records of the IMEI code and the mobile phone number are recorded in the block chain together.
The 5G platform, i.e. 5G communication architecture, includes a plurality of mobile edge computing hosts, wherein the mobile edge computing hosts have a plurality of functional modules therein, including: the communication module is used for acquiring dynamic information of a user and communication between the 5G platform and the service platform; and the capability opening module is used for providing an IT development environment, running a block chain and a corresponding intelligent contract program and matching the mobile edge computing host to carry out mobile edge computing on the user mobile equipment. And the storage module is used for storing the related data.
The distributed data interface includes: the house management service interface, the banking service interface and the public deposit service interface are respectively used for communication between the 5G platform and a house management system, a banking system and a public deposit management system which are outside the second-hand house transaction system, wherein each distributed data interface is provided with a corresponding encryption terminal and is used for decrypting received encrypted data or encrypting and sending data of the external system; each encryption terminal is internally provided with a unique mark identification code and respectively recorded in a block chain and a service platform of the 5G platform, before each session, the encryption terminal automatically sends the identification code to the 5G platform so as to carry out communication verification, and normal communication can be carried out after the verification is passed; before formal communication, the encryption terminal receives a symmetric key which is randomly generated by the service platform and transmitted by the 5G platform, so that the received encrypted data is decrypted or the transmission data of the external system is encrypted and transmitted.
According to the system, the invention also discloses a second-hand room transaction method using the system, which comprises the following steps: user transaction process and user registration process, the specific transaction process will be recorded in the blockchain. Wherein, the user transaction process specifically comprises: s1, the buyer and the seller log in the service platform to draft a house buying and selling contract, and then the service platform sends the drafted house buying and selling contract to the 5G platform, so that the drafted house buying and selling contract is recorded in the block chain by the 5G platform; the S2 and 5G platforms trigger the corresponding intelligent contract after receiving the drafted house buying and selling contract, thereby automatically communicating with an external system through a distributed data interface and carrying out qualification audit on buyers and sellers; s3, after the qualification audit of the buyer and the seller passes, the buyer and the seller sign a contract, the buyer stores the initial payment into an appointed deposit account, the seller appoints a collection account, and the processes are recorded in a block chain; s4, after the buyer and the seller transact to the house management department and complete the specific post-customization procedure, any party of the buyer and the seller logs in the service platform to initiate the post-customization procedure to complete confirmation, thereby triggering the corresponding intelligent contract; s5, the intelligent contract is communicated with an external system through a distributed data interface, so that the user procedure and the completion condition of the user procedure are checked, the user procedure obtained by the user procedure is recorded in a block chain by the 5G platform after the user procedure is checked, and the intelligent contract is triggered; and S6, the intelligent contract automatically extracts the initial payment from the specified account of the buyer and inputs the initial payment into the specified account of the seller, and then the process is uploaded to the block chain to complete the transaction process of the second-hand house. Specifically, before step S1, the method further includes: operating an authentication process, the operating the authentication process comprising: when the buyer and the seller send out the draft house trading combination, the service platform sends operation verification to the user through the 5G platform, and the operation verification comprises the following steps: voice recognition, fingerprint recognition, face recognition and/or eye recognition to verify the identity of the operator.
The user registration process specifically includes: the user logs in the service platform to register the account and uploads the account, and the method comprises the following steps: identity information, operation verification information, a communication address and a designated bank account, wherein the identity information comprises: name, gender and identification number; the operation verification information includes: voice, fingerprint, face and face feature identification information and/or eyeball feature identification information; the communication address includes: a fixed broadband IP address and/or a mobile phone number; the service platform sends the identity information, the operation verification information, the communication address and the designated bank account to the 5G platform, and then uploads the identity information, the operation verification information, the communication address and the designated bank account to the block chain; the identity information, the communication address and the designated bank account are communicated with a corresponding external system through a corresponding distributed data interface by an intelligent contract in a 5G platform, so that the identity information, the communication address and the designated bank account are respectively audited; after the verification is passed, the 5G platform initiates operation verification to the communication address in the corresponding account and requests to bind the mobile phone; and when the 5G platform finishes auditing by comparing the operation verification information and obtains the information of the confirmation binding mobile phone replied by the user, the mobile edge computing host acquires the mobile equipment identification code of the mobile phone of the user, associates the mobile equipment identification code with the information of the user and uploads the mobile equipment identification code to the block chain, so that the registration process of the user is finished.
Specifically, in the user transaction process and the user registration process, the process of communicating the distributed data interface with the external system includes: after receiving an external system communication request from the intelligent contract, the 5G platform sends the request to the service platform; after receiving the external system communication request, the service platform generates a symmetric secret key by a secret key random generation module in the service platform and sends the symmetric secret key to the 5G platform; the 5G platform encrypts the symmetric secret key by using a public key of an encryption terminal corresponding to a distributed data interface connected with the external system and then sends the encrypted secret key to the encryption terminal; the encryption terminal obtains the symmetric secret key after being decrypted by a private key of the encryption terminal, and sends the symmetric secret key to a corresponding external system through the distributed data interface; and then, the external system and the 5G platform communicate with each other through a corresponding data distributed interface and the symmetric key, wherein the encryption terminal is matched with the distributed data interface for use. Wherein the qualification audit comprises: and (4) checking the house sale qualification, checking the house transaction contract, checking the issuance of the public accumulation fund, checking the loan and checking the qualification of the past household.
More specifically, the house sale qualification auditing process includes: when the buyer and the seller determine the transaction, the corresponding intelligent contract in the% G platform automatically acquires the information of all names, identity card numbers, house positions, house properties, whether the transaction on the market is allowed or not, whether the mortgage or the sealing is available or not and the like of all persons of the house through a house management service interface; then, automatically finishing house sale qualification audit; and after the audit is finished, storing the house sale qualification audit result in the block chain and sending the house sale qualification audit result to the service platform.
The house transaction contract auditing process comprises the following steps: after the buyer and the seller sign a house transaction contract, according to contract terms, the buyer stores the initial payment into a designated deposit account (or a designated withdrawal account), the seller designates a collection account, and when the account amount of the buyer and the seller changes, the sum is uploaded to the 5G platform through a banking service interface by an external banking system; then the 5G platform examines whether the amount of money in the deposit account appointed by the buyer accords with contract regulation or not according to the house transaction contract and takes over the deposit account; when the condition is fulfilled (if the user finishes the procedure), the deposit account transfers the appointed amount to the collection account, and the account management right is removed. And finishing the transaction process of the house. Wherein the above process is to be recorded in the blockchain.
The public accumulation fund issuing and auditing process comprises the following steps: if the house buyer needs to handle the accumulation fund loan, the service platform communicates with an external accumulation fund management system through an accumulation fund service interface via the 5G platform; sending a public deposit loan auditing request to the public deposit management system according to the account information of the user; then, the public accumulation fund management system finishes checking the public accumulation fund loan of the buyer, and sends the public accumulation fund loan to the 5G platform and further to the service platform; the service platform provides the public deposit loan information of the seller inquiring the buyer in real time. Wherein the above process is to be recorded in the blockchain.
The house loan auditing process comprises the following steps: the service platform is communicated with an external bank system through a banking interface via the 5G platform; sending a request for checking the equity loan to the bank system according to the account information of the user; the bank system finishes loan audit, and sends the audit result to the 5G platform and further to the service platform; the service platform provides the bank loan auditing result of the seller inquiring the buyer in real time. Wherein the above process is to be recorded in the blockchain.
The house passing-house qualification auditing process comprises the following steps: and checking the house sale qualification audit, the house transaction contract audit, the public accumulation fund issuing audit and the house loan audit result by the house user passing qualification audit intelligent contract, and prompting the buyer and the seller to carry out the next transaction when all the audit results pass, namely formally finishing the house user passing procedure by the house management department.
Detailed description of the preferred embodiments (communication between service platform and external System)
To explain the overall process of the invention, the following takes the seller a and the buyer B of a certain house as an example, and the specific contents are as follows:
step 1, the service platform entry comprises: unique network addresses of external systems corresponding to house management departments, banks and public accumulation fund management departments; providing corresponding encryption terminals for each system, and registering the identity of each encryption terminal in a service platform;
step 2, the seller A registers an account on a service platform, and the service platform obtains the user information of the seller and the mobile phone IMEI code and the mobile phone number of the seller; then, the seller can issue second-hand house selling information through a login account;
step 3, the service platform obtains the sale qualification information of the second-hand house through the house management service interface, and stores the house qualification auditing result into the block chain;
step 4, drawing a second-hand house transaction contract together by the seller A and the buyer B, wherein the second-hand house transaction contract comprises the total amount of the house, the initial payment amount and the like, and then storing the transaction contract into a block chain;
step 5, if the buyer B needs to handle the procedure of the public accumulation fund loan, the buyer B requests to audit the public accumulation fund loan by logging in a service platform, and then an external public accumulation fund management system audits, wherein the audit result is stored in a block chain;
step 6, if the buyer B needs to transact loan procedures in the bank, the buyer B requests to carry out bank loan audit through the login service platform, and then the external bank system carries out audit, wherein the audit result is stored in the block chain;
step 7, after the audit on the buyer and the seller is passed, the buyer and the seller can carry out the next transaction;
and 8, after the service platform obtains information of finishing the user-passing procedure through the house management system, triggering a corresponding intelligent contract, and automatically transferring the account of the buyer to a collection account of the seller by the intelligent contract, so that the transaction process of the second-hand house is finished, and the transaction process is recorded in the block chain.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A second-hand room transaction system based on a 5G architecture and a blockchain is characterized by comprising:
a service platform for comprising: the method comprises the following steps of generating a secret key, registering the identity of a user, identifying communication equipment and user operation and publishing information online, wherein the service platform comprises: the online information release module is used for releasing house trading information and inquiring the house trading process; the safety management module is used for identity registration and management of the user and identity identification in the subsequent request process; the key random generation module is used for generating a symmetric key, encrypting the symmetric key by a public key of a corresponding encryption terminal and sending the encrypted key to the corresponding encryption terminal by the 5G platform;
the 5G platform comprises a mobile edge computing host and is used for acquiring dynamic information of a user and running a block chain and an intelligent contract, wherein the 5G platform and the service platform are communicated with each other; the mobile edge computing host comprises:
the communication module is used for acquiring dynamic information of a user and communication between the 5G platform and the service platform;
the capability opening module is used for providing an IT development environment, running a block chain and a corresponding intelligent contract program and matching the mobile edge computing host to carry out mobile edge computing on the user mobile equipment;
the storage module is used for storing related data;
wherein the intelligent contract in the capability opening module is used for comprising: checking the house sale qualification, checking the house transaction contract, checking the issuance of the public accumulation fund, checking the loan and checking the qualification of the past household;
the distributed data interface is used for the 5G platform to communicate with an external system of a related business department in the second-hand house transaction process, wherein the distributed data interface is arranged at one end of the external system; the distributed data interface includes: the house management service interface, the banking service interface and the public deposit service interface are respectively used for communication between the 5G platform and a house management system, a banking system and a public deposit management system which are outside the second-hand house transaction system, and each distributed data interface is provided with a corresponding encryption terminal and is used for decrypting received encrypted data or encrypting and sending data of the external system;
the second-hand room transaction method realized by the second-hand room transaction system comprises the following steps:
when the buyer and the seller send out a draft house buying and selling contract request, the service platform sends operation verification to the user through the 5G platform, and the operation verification comprises the following steps: voice recognition, fingerprint recognition, face recognition and/or eye recognition to verify the identity of the operator;
the buyer and the seller log in the service platform to draft a house buying and selling contract, and then the service platform sends the drafted house buying and selling contract to the 5G platform, so that the drafted house buying and selling contract is recorded in the block chain by the 5G platform;
after receiving the drafted house buying and selling contract, the 5G platform triggers a corresponding intelligent contract, so that the platform automatically communicates with an external system through a distributed data interface to perform qualification verification on a buyer and a seller; wherein the qualification audit comprises: checking the house sale qualification, checking the house transaction contract, checking the issuance of the public accumulation fund, checking the loan and checking the qualification of the past household;
after the qualification audit of the buyer and the seller passes, the buyer and the seller sign a contract, the buyer stores the initial payment into an appointed deposit account, the seller appoints a collection account, and the processes are recorded in a block chain;
after the buyer and the seller transact to the housing management department and complete the specific post-house procedure, any party of the buyer and the seller logs in the service platform to initiate the post-house procedure to complete the confirmation;
the intelligent contract is communicated with an external system through a distributed data interface, so that the user procedure and the completion condition of the user procedure are checked, and the obtained user procedure is recorded in a block chain by the 5G platform after the checking is passed; the process of the distributed data interface communicating with an external system comprises: after receiving an external system communication request from the intelligent contract, the 5G platform sends the request to the service platform; after receiving the external system communication request, the service platform generates a symmetric secret key by a secret key random generation module in the service platform and sends the symmetric secret key to the 5G platform; the 5G platform encrypts the symmetric secret key by using a public key of an encryption terminal corresponding to a distributed data interface connected with the external system and then sends the encrypted secret key to the encryption terminal; the encryption terminal obtains the symmetric secret key after being decrypted by a private key of the encryption terminal, and sends the symmetric secret key to a corresponding external system through the distributed data interface; then, an external system communicates with the 5G platform through a corresponding data distributed interface and the symmetric secret key, wherein the encryption terminal is matched with the distributed data interface for use;
the intelligent contract automatically extracts the first payment from the specified account of the buyer and inputs the first payment into the specified account of the seller, and then the process is uploaded to the block chain to complete the transaction process of the second-hand house;
the second-hand room transaction method further comprises the following steps: a registration process for a user, the registration process for the user comprising:
the user logs in the service platform to register the account and uploads the account, and the method comprises the following steps: identity information, operation verification information, a communication address and a designated bank account, wherein the identity information comprises: name, gender and identification number; the operation verification information includes: voice, fingerprint, face and face feature identification information and/or eyeball feature identification information; the communication address includes: a fixed broadband IP address and/or a mobile phone number;
the service platform sends the identity information, the operation verification information, the communication address and the designated bank account to the 5G platform, and then uploads the identity information, the operation verification information, the communication address and the designated bank account to the block chain; the identity information, the communication address and the designated bank account are communicated with a corresponding external system through a corresponding distributed data interface by an intelligent contract in a 5G platform, so that the identity information, the communication address and the designated bank account are respectively audited;
after the verification is passed, the 5G platform initiates operation verification to the communication address in the corresponding account and requests to bind the mobile phone;
and when the 5G platform finishes auditing by comparing the operation verification information and obtains the information of the confirmation binding mobile phone replied by the user, the mobile edge computing host acquires the mobile equipment identification code of the mobile phone of the user, associates the mobile equipment identification code with the information of the user and uploads the mobile equipment identification code to the block chain, so that the registration process of the user is finished.
2. The system of claim 1, wherein registering in the security management module communication addresses unique to the house authority, the bank, and the accumulation authority in the service platform, respectively, comprises: network IP address and its physical access address; when the systems corresponding to the house management department, the bank and the public deposit management department request conversation, the 5G platform obtains the communication address of the conversation request through the communication module in the MEC host, and the service platform compares the communication address with the communication address registered in advance, so that the communication identities of the house management department user, the bank user and the public deposit management department user are identified.
3. The system of claim 1, wherein the house transaction contract auditing process comprises: after the buyer and the seller sign a house transaction contract, according to contract terms, the buyer stores the first payment into an appointed deposit account or an appointed withdrawal account, the seller appoints a collection account, and when the account amount of the buyer and the seller changes, the sum is uploaded to a 5G platform through a banking service interface by an external banking system; then the 5G platform examines whether the amount of money in the deposit account appointed by the buyer accords with contract regulation or not according to the house transaction contract and takes over the deposit account; and when the condition is met, automatically transferring the appointed amount from the deposit account to the collection account, removing the account management right, and completing the house transaction process, wherein the process is recorded in the block chain.
4. The system of claim 1, wherein the backlog issuance audit process comprises: if the house buyer needs to handle the accumulation fund loan, the service platform communicates with an external accumulation fund management system through an accumulation fund service interface via the 5G platform; sending a public deposit loan auditing request to the public deposit management system according to the account information of the user; then, the public accumulation fund management system finishes checking the public accumulation fund loan of the buyer, and sends the public accumulation fund loan to the 5G platform and further to the service platform; the service platform will provide the seller with the information of the buyer's public fund loan in real time, wherein the above process will be recorded in the blockchain.
5. The system of claim 1, wherein the loan audit process comprises: the service platform is communicated with an external bank system through a banking interface via the 5G platform; sending a request for checking the equity loan to the bank system according to the account information of the user; the bank system finishes loan audit, and sends the audit result to the 5G platform and further to the service platform; the service platform will provide the bank loan audit result of the seller inquiring the buyer in real time, wherein the above process will be recorded in the blockchain.
6. The system of claim 1, wherein the underwriting audit process comprises: and the intelligent contract for checking the qualification of house sale, the contract of house transaction, the issuing of the public accumulation fund and the checking result of house loan are checked by the intelligent contract for checking the house-passing qualification, and when all the checking results pass, the buyer and the seller are prompted to carry out the next transaction.
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