CN114266069A - House transaction electronic data sharing system and method based on block chain technology - Google Patents
House transaction electronic data sharing system and method based on block chain technology Download PDFInfo
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Abstract
The invention relates to a house transaction electronic data sharing system, and relates to a computer data processing system. Specifically, each business system is respectively provided with a block chain node, an electronic file system, an electronic signature system, a timestamp server and an IBC cipher machine; the system comprises a room-enterprise file management system, a block chain evidence storage center, a financial service system, a third-party system and a server, wherein the room-enterprise file management system generates a safe electronic file through encryption and configures corresponding file access authority to upload the safe electronic file to the block chain evidence storage center, the block chain evidence storage center returns a business serial number to the room-enterprise file management system, the room-enterprise file management system transmits the business serial number to the financial service system, the financial service system acquires the safe electronic file through the business serial number in combination with the authority configured by a room enterprise, the safe electronic file is synchronized to the third-party system through the serial number, and the third-party system acquires all encrypted files through the business serial number and decrypts the encrypted files to acquire shared files. The electronic data is used for transaction in the whole house transaction process, and the electronic data are mutually trusted.
Description
Technical Field
The invention relates to the technical field of computer information processing, in particular to a house transaction electronic data sharing technology.
Background
In the real estate transaction process, a plurality of organizations are involved, business systems of the organizations are different, data are exchanged, and the exchanged data have a causal relationship with business flow of the business systems. In the traditional house transaction, paper documents are used for transaction in the related business part, and the subsequent part is subjected to electronic imaging transaction. The most critical evidence is still paper pieces during the demonstration, and the problems of storage and data utilization exist. The visualized electronic file is only used as the content of the internal business informationization. The method cannot meet the demand of paper removal through full-service management, and has a large influence on the overall social cost. Meanwhile, multi-party transaction is based on different service systems and is in multiple butt joint, and the cost for modifying the system is high.
Application No. 201811636111.6 is a blockchain based real estate certificate and transaction method. The system comprises the following functional modules: the real estate deposit certificate and transaction method based on the block chain removes a third party intermediary, can realize direct transaction of a seller and a buyer, reduces transaction cost, improves transaction efficiency, and realizes high efficiency of real estate development, audit and transaction. And an admission object comprises two types, and a developer generates a digital user certificate as an entrance of an access chain through an intelligent contract. And the ordinary house purchasing user issues a digital certificate to enter a chain after passing the examination of a relevant government department. And the real estate developer module is used for submitting a development application, confirming and signing the verification result after the verification of the relevant department is passed, and issuing a corresponding development permission for the developer by the intelligent contract through the verification result of the relevant department. And giving the auditing information as a parameter to the intelligent contract, and determining whether to allow the chaining by the intelligent contract. The developer releases the relevant information of the pre-sold commodity house to the chain, the house buyer can check some digital certificate information of the pre-sold commodity house, choose to buy the house according to the needs of the developer, perform off-chain transaction supported by a third-party payment mechanism, and return the information of the transaction to the block chain for storage, namely, store in the off-chain transaction chain. The patent application mainly relates to development and transaction verification, digital user certificates are generated by verification of all parties, an intelligent contract determines whether to enter a chain, a third-party organization is required to provide support for out-of-chain transactions and the like, the verification links are multiple, the transactions are complex, the out-of-chain transactions and the like, electronic data sharing and mutual trust of all transaction parties are difficult to achieve, and the requirement on the safety of a system is higher.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a system and a method for sharing house transaction electronic data based on a block chain technology, a biological feature original handwriting electronic signature and a national encryption algorithm. The problems of data sharing and data mutual trust among multiple parties (enterprises, financial institutions and governments) related to transaction in the house transaction process are solved.
The technical solution for solving the above technical problems is to provide a block chain technology-based electronic data sharing system for house transaction, comprising: the system comprises a room-enterprise file management system, a financial service system, a block chain security evidence storage center (hereinafter referred to as evidence storage center), an IBC password module and a file verification module: the system is used for realizing registration of a user, generation of transaction flow and file verification, wherein an IBC password module of a password system based on an identity identifier realizes IBC password service and digital certificate service; the file verification module: the verification of the transaction file is realized, and cross-system mutual recognition is realized.
The file management system of the house enterprise encrypts files to be shared through an IBC (identity based password) cryptographic technology, configures corresponding file access authority and uploads the files to the certificate storage center, the certificate storage center generates and returns corresponding business serial numbers to the file management system of the house enterprise, the file management system of the house enterprise transmits the business serial numbers to the financial service system in the data circulation process, the financial service system acquires encrypted files through the business serial numbers and the authority configured by the house enterprise, the files are decrypted through the IBC cryptographic module, the financial service system edits and encrypts the files and uploads the files, the files are synchronized to a third-party system through the serial numbers, and the third-party system can acquire all encrypted files through the business serial numbers and decrypt the files by using the IBC cryptographic technology. The business serial number is generated based on desensitization hash of the information of the trading user, the floor address of the trading house and the house enterprise id. The method specifically comprises the following steps:
a block chain technology-based house transaction electronic data sharing system comprises: business system and block chain deposit certificate center, the business system includes: the system comprises a room enterprise file management system, a financial service management system and a third-party system, wherein each service system is respectively provided with a block chain node, an electronic file system, an electronic signature system, a timestamp server and an IBC (identity based security) cipher machine; the block chain evidence storage center comprises: the system comprises an IBC password module and a file verification module, and is used for realizing registration of a business system, generation of transaction flow, verification of transaction files, IBC password service and digital certificate service, wherein a room-enterprise file management system generates a safe electronic file by encrypting a file to be shared and uploads the file to a block chain certificate storage center in a configuration of corresponding file access authority, the block chain certificate storage center returns a business flow number to the room-enterprise file management system, the room-enterprise file management system transmits the business flow number to a financial service system, the financial service system acquires the safe electronic file by combining the business flow number with the authority configured by a room enterprise, the business flow number is synchronized to a third-party system, and the third-party system acquires all encrypted files by the business flow number and decrypts the encrypted files to acquire shared files.
Further, a certificate storing center establishes node identity and access authority when a user business system is registered, the certificate storing center issues a private key digital certificate bound with a digital signature to the business system, the certificate storing center stores a public key digital certificate, the business system sends the digital signature to the certificate storing center to request access authentication, the certificate storing center verifies the digital signature through signature stroke characteristics, the financial service system acquires an encrypted file through business stream numbers in combination with authority configured by a room enterprise, decrypts the file through an IBC (identity based password) module, edits and encrypts the file and uploads the file, the file is synchronized to a third party system through the business stream numbers, and the third party system acquires all encrypted files through the business stream numbers and decrypts the file by using an IBC (identity based password) technology.
Further, after the business system finishes registration, the house-enterprise file management system encrypts the signed transaction contract and configures corresponding file access authority to upload the encrypted transaction contract to a block chain certificate storage center, the certificate storage center generates a business serial number according to the desensitization hash of transaction user information, house building address information and house-enterprise id number, and an encrypted electronic file of the transaction is added and deleted under the business serial number; and storing only the evidence details Hash to the block chain evidence storage center for the electronic contract documents which do not need to be shared, and storing the original text and the evidence details to the block chain evidence storage center for the electronic contract documents which need to be shared.
The method is characterized in that the transaction file verification verifies the digital signature and the biological characteristic data of the original text and the process through the evidence details, and comprises the following steps: the method comprises the following steps of (1) verifying in a complete secret mode and verifying in a storage sharing mode, wherein the complete secret mode is used for storing evidence details HASH for a block chain storage system, and the evidence details are stored for a business system; the certificate storage sharing mode is used for verifying that the original text or the original text Hash is provided for the certificate storage center, and the certificate storage center is used for verifying the authenticity of the original text and the authenticity of the process.
Furthermore, each evidence storing service node is connected with respective service application, and the service application performs consensus computing, consensus synchronization, shared data reading and outputs verified evidence storing shared data to the nodes, wherein the consensus computing is that each evidence storing service node achieves consistent consensus on the evidence storing shared data uplink through a consensus algorithm of a consensus layer; the consensus synchronization is that the evidence storage center synchronizes uplink data to all distributed service node accounts through a network layer; reading shared data, namely obtaining the shared data by a service node needing to access the deposit and evidence shared data through a distributed account book on a node of a block chain deposit and evidence center; when the certificate-storing shared data is submitted to the block chain certificate-storing system, the block chain certificate-storing system encrypts electronic data by adopting symmetric encryption, and generates a key ciphertext according to the authority list submitted by the service system, wherein the encrypted data and the authority list generated by the key ciphertext form a safe electronic file.
The invention also provides a block chain technology-based house transaction electronic data sharing method, which comprises the following steps: each business system is respectively provided with a block chain node, an electronic file system, an electronic signature system, a timestamp server and an IBC cipher machine; the system comprises a room enterprise file management system, a block chain evidence storage center, a financial service system, a third-party system and a third-party system, wherein the room enterprise file management system generates a safe electronic file by encrypting a file to be shared and configures corresponding file access authority to upload the file to the block chain evidence storage center, the block chain evidence storage center returns a business serial number to the room enterprise file management system, the room enterprise file management system transmits the business serial number to the financial service system, the financial service system acquires the safe electronic file by combining the business serial number with the authority configured by a room enterprise, the serial number is synchronized to the third-party system, and the third-party system acquires all encrypted files by the business serial number and decrypts the encrypted files to acquire a shared file.
The invention uses the block chain technology, the digital certificate and the application of the encryption algorithm of the national secret, realizes mutual trust of all parties to the electronic data in the transaction link and difficult evidence demonstration of the electronic data through the authority control of the electronic file, and further realizes the purposes of electronic data sharing and multi-party operation of the same electronic file. The method solves the problem that the whole house transaction process uses electronic data to carry out transaction, greatly improves the transaction efficiency and reduces the transaction cost.
Drawings
FIG. 1 is a schematic diagram of a system for sharing electronic data for house transaction based on block chain technology;
FIG. 2 is a schematic diagram of node authorization and access control;
FIG. 3 electronic data and evidence;
FIG. 4 full stealth mode validation;
FIG. 5 is a verification and sharing mode validation;
FIG. 6 electronic data sharing;
FIG. 7 is a schematic diagram of secure electronic file format generation;
FIG. 8 is a schematic view of a secure electronic document reading.
Detailed Description
For further understanding of the technical solutions of the present invention, the means and measures of the technical solutions of the present invention are specifically described below with reference to the accompanying drawings and specific examples. Fig. 1 shows a block chain technology-based electronic data sharing system for house transactions according to the present invention, which comprises: the block chain deposit certificate center and the service system, the service system includes: a room-enterprise file management system, a financial service system and a government affair system; the block chain security certificate storage center comprises: the IBC password module and the file authentication module are used for realizing registration of a user, generation of transaction running water, verification of transaction files, IBC password service and digital certificate service; each system is respectively provided with a block chain node, an electronic file system, an electronic signature system, a timestamp server and an IBC cipher machine.
The block chain security certificate storage center establishes node identity and access authority when a user registers, the super node issues a private key digital certificate to the application node, the certificate represents the application node identity and is used for binding a digital signature, the super node stores the application public key digital certificate, the application node sends the digital signature to request access authentication to the super node, and the application node obtains the access authority after the super node passes the signature verification. And storing only the evidence details Hash to the alliance block chain security certificate storage center for the electronic data file certificate storage which does not need to be shared, and storing the original text and the evidence details to the alliance block chain security certificate storage center for the electronic file which needs to be shared. And verifying the digital signature and the biological characteristic data of the original text and the process through the certificate storing details, providing the original text or the Hash of the original text to the alliance block chain certificate storing system under the condition of certificate storing and file sharing, comparing the Hash value of the original text calculated by the alliance block chain certificate storing system with the Hash of the certificate storing, and verifying the digital signature and the biological characteristic data of the original text and the process through the certificate storing details. When the certificate-storing shared data is submitted to the block chain certificate-storing system, the block chain certificate-storing system encrypts electronic data by adopting symmetric encryption, and generates a key ciphertext according to the authority list submitted by the service system, wherein the encrypted data and the authority list generated by the key ciphertext form a safe electronic file.
The whole link comprises five steps of node registration, initiation sharing, electronic data storage and evidence storage, file sharing transmission and electronic file verification.
If the real estate enterprise needs to share an electronic contract to a bank, firstly, an account needs to be registered in a certificate storing center through a real estate enterprise file management system, the real estate enterprise submits a file sharing request to the certificate storing center after the account is successfully registered, and an IBC encryption module of the certificate storing center encrypts the file (the electronic contract) needing to be shared; after encryption, the room enterprise file management system initiates sharing to a certificate storage center, meanwhile, access control authority is set, the certificate storage center generates a business serial number after receiving an encrypted sharing electronic contract, electronic data certificate storage is carried out, and the business serial number is fed back to the room enterprise file management system after the certificate storage is finished; the house-enterprise file management system can send the current business to a bank financial service system needing to share the electronic contract in a running mode, the financial service system requests an encrypted electronic contract file corresponding to a running serial number to the certificate storage center after receiving the running serial number, the certificate storage center returns the encrypted electronic contract to the financial service system after passing the authority verification, the financial service system calls an IBC encryption module of the certificate storage center to decrypt the file, and if the decryption is successful, an electronic file verification request can be sent to the certificate storage center if needed.
And subsequent real estate enterprises can continue to add and delete electronic files under the serial number id through the enterprise file management system.
Node registration
The card storage center establishes node identity and access authority when the user registers. As shown in fig. 2, the authorization and access of the application node includes registration and authorization through a certificate authority. After registration, the certificate storing center issues a private key digital certificate to a business system (a house enterprise file management system, a financial service system, a third-party system and the like of a house and a place manufacturer, a financial institution and the like), the private key digital certificate is bound with a digital signature to represent application identity, and the certificate storing center stores a public key digital certificate for subsequent access verification.
And (4) authentication and access, wherein the service system sends a digital signature to request access authentication to a certificate storage center, and the signature verification obtains access authority through an application node. When the business system makes an access request to the certificate storing center, the digital signature needs to be submitted, the certificate storing center extracts the digital signature of the electronic signature and seal system of the business system, the digital signature is verified through signature stroke characteristics, and after the signature is verified, the business system obtains access authority.
Initiating sharing
After the node registration is completed, the house-enterprise file management system encrypts electronic files such as the signed transaction contract and the like through an IBC (identity based security) cryptographic technology, configures corresponding file access authority, and uploads the encrypted electronic files to a block chain certificate storage center, the certificate storage center generates a business serial number according to the transaction user information desensitization hash, house building address information and house-enterprise id, and the encrypted electronic file of the transaction is added under the business serial number. (at this time, the electronic document is the encrypted document, and the center of deposit certificate is not authorized to know the content of the document)
Electronic data certificate of certificate storage center
FIG. 3 is a schematic diagram of electronic data and evidence preservation. And generating an original text HASH according to the electronic contract original text, and generating certificate details HASH according to the certificate details.
And generating an original text Hash, wherein the electronic data bearing the service data and the real will expression (signature and signature) of the entity is the original text of the final electronic data formed in the service process, and a unique Hash value (original text Hash) obtained after the operation of a cryptographic algorithm forms a unique mapping relation with the original text, so that the method is safe and irreversible.
Generating evidence detail Hash. Evidence details are recorded on the record of the whole process of the electronic data, and the data such as time, original text hash, digital signature and the like in each process are recorded in detail. The electronic data can be comparatively verified according to evidence details and the results of each step can be traced. The evidence detail data is subjected to the operation of a cryptographic algorithm to obtain a unique hash value, and the unique hash value and the evidence detail form a unique mapping relation, and are safe and irreversible.
And storing the evidence only for the evidence details Hash of the electronic data file which does not need to be shared to a security evidence storage center of the block chain of the alliance. The method is simple and confidential for storing electronic data, only stores the Hash value, and does not expose the original text and evidence details; the authenticity of the evidence details can be verified, and after the authenticity of the evidence details is ensured, the original text and the generation process can be verified through the evidence details obtained offline. And storing the original text and the evidence details of the electronic file to be shared into a security evidence storage center of the block chain of the alliance. Both the original text and evidence details are put into the proof system, which can provide electronic data sharing. For example: the developer of the house enterprise uploads the telegraph text contract to the block chain certificate storage system of the alliance for certificate storage and endorsement, and bank and legal resources can retrieve related electronic data at any time through the system.
Shared file transfer
The certificate storage center processes and returns a business serial number to the house enterprise file management system, the house enterprise file management system transmits the business serial number to the financial service system in the data circulation process, the financial service system acquires an encrypted file through the business serial number and the authority configured by a house enterprise, the file is decrypted through the IBC password module to operate, the financial service system can edit and encrypt the file and then upload the file, the file is synchronized to a third-party system through the serial number, and the third-party system can acquire all encrypted files through the business serial number and decrypt the encrypted files by using the IBC password technology.
Electronic document verification
The block chain evidence storing center verifies the authenticity of the evidence storing details, and the business system (the room enterprise file management system, the financial service system and the government affair system) provides verification of the file evidence storing details, the file original text and the process.
As shown in fig. 4, in the complete privacy mode verification, the block chain storage certification system stores evidence details HASH, the business system stores the evidence details, and the business system verifies the digital signature at each step, verifies the file HASH at each step, and verifies the biometric data. Comparing the Hash value of the certificate storing details with the Hash of the original text of the certificate storing details; and verifying the digital signature and the biological characteristic data of the original text and the process through the evidence storing details.
FIG. 5 illustrates a credential sharing mode verification. And under the condition of storing the certificate and sharing the file, providing the original text or the Hash of the original text to a certificate storing center, and verifying the authenticity of the original text and the authenticity of the process by the certificate storing center. The verification method comprises the following steps: and comparing the calculated Hash value of the original text with the stored Hash value, and verifying the digital signature and the biological characteristic data of the original text and the process according to the stored certificate details.
FIG. 6 is a schematic diagram showing electronic data sharing. Initiating uplink, connecting each evidence storage node with respective service application, and outputting verified evidence storage shared data to the nodes by the service application through consensus calculation, consensus synchronization and shared data reading; performing consensus calculation, wherein each evidence storing node achieves consensus on the evidence storing shared data uplink through a consensus algorithm of a consensus layer; the common identification is synchronous, and the evidence storage center system synchronizes the uplink data to all the distributed application node accounts through the network layer; and reading the shared data, wherein a node needing to access the evidence-storing shared data obtains the shared data through the distributed account book on the block link point.
FIG. 7 is a schematic diagram of secure electronic file format generation. And generating a safe electronic document, wherein if the house area manufacturer needs to provide the house transaction contract to the bank for the bank to carry out house mortgage loan, the bank needs to provide the mortgage contract to the house area manufacturer to complete house transaction. When the third-party service system submits the certificate-storing shared data to the certificate-storing center, the certificate-storing center encrypts the electronic data by adopting symmetric encryption and generates a key ciphertext according to the authority list submitted by each service system; the encrypted data and the authority list generated by the key ciphertext form a secure electronic file. The original text is encrypted by the electronic data symmetric encryption key to generate a ciphertext, each application node generates the electronic data symmetric encryption key by adopting a public key digital certificate, and different cipher key ciphertexts are generated aiming at different application nodes. And forming a readable authority list by using different key ciphertexts to form a secure electronic file.
FIG. 8 is a diagram illustrating reading of a secure electronic document. When an application node of the certificate storage center reads a file, the readable authority list is traversed, a private key digital certificate is tried to decrypt a key ciphertext in the authority list, if the node is in the authority list, a symmetric encryption key can be decrypted, and a data ciphertext can be directly decrypted by using the key to obtain an original text. If the node is not in the readable authority list, the symmetric encryption key cannot be decrypted, and the data ciphertext cannot be decrypted, so that the data privacy is ensured.
Claims (10)
1. A block chain technology-based electronic data sharing system for house transaction, comprising: business system and block chain deposit certificate center, the business system includes: the system comprises a room enterprise file management system, a financial service management system and a third-party system, wherein each service system is respectively provided with a block chain node, an electronic file system, an electronic signature system, a timestamp server and an IBC (identity based security) cipher machine; the block chain evidence storage center comprises: the system comprises an IBC password module and a file verification module, and is used for realizing registration of a business system, generation of transaction flow, verification of transaction files, IBC password service and digital certificate service, wherein a room-enterprise file management system generates a safe electronic file by encrypting a file to be shared and uploads the file to a block chain certificate storage center in a configuration of corresponding file access authority, the block chain certificate storage center returns a business flow number to the room-enterprise file management system, the room-enterprise file management system transmits the business flow number to a financial service system, the financial service system acquires the safe electronic file by combining the business flow number with the authority configured by a room enterprise, the business flow number is synchronized to a third-party system, and the third-party system acquires all encrypted files by the business flow number and decrypts the encrypted files to acquire shared files.
2. The system of claim 1, wherein the certificate authority establishes node identity and access authority when the user service system registers, the certificate authority issues a private key digital certificate bound with a digital signature to the service system, the certificate authority stores a public key digital certificate, the service system sends the digital signature to request access authentication to the certificate authority, the certificate authority verifies the digital signature through signature stroke characteristics, the financial service system acquires an encrypted file through a service serial number in combination with authority configured by a house enterprise, decrypts the file through an IBC (identity based password) module, edits, encrypts and uploads the file, synchronizes to a third-party system through the service serial number, and the third-party system acquires all encrypted files through the service serial number and decrypts the file by using an IBC (identity based password) technology.
3. The system according to claim 1, wherein after the business system completes registration, the house-enterprise file management system encrypts the signed transaction contract and configures corresponding file access authority to upload to a block chain certificate authority, the certificate authority generates a business serial number according to the transaction user information desensitization hash, house building address information and house-enterprise id number, and adds and deletes the encrypted electronic file of the transaction under the business serial number; and storing only the evidence details Hash to the block chain evidence storage center for the electronic contract documents which do not need to be shared, and storing the original text and the evidence details to the block chain evidence storage center for the electronic contract documents which need to be shared.
4. A system according to any one of claims 1 to 3, wherein the transaction document verification verifies the digital signature and biometric data of the original and the process with the evidence details, including: the method comprises the following steps of (1) verifying in a complete secret mode and verifying in a storage sharing mode, wherein the complete secret mode is used for storing evidence details HASH for a block chain storage system, and the evidence details are stored for a business system; the certificate storage sharing mode is used for verifying that the original text or the original text Hash is provided for the certificate storage center, and the certificate storage center is used for verifying the authenticity of the original text and the authenticity of the process.
5. The system of claim 1, wherein each certified service node interfaces with its respective service application, the service application performs consensus computation, consensus synchronization, shared data reading, and outputs verified certified shared data to the nodes, wherein the consensus computation is that each certified service node agrees to a consensus on the certified shared data uplink through a consensus algorithm of a consensus layer; the consensus synchronization is that the evidence storage center synchronizes uplink data to all distributed service node accounts through a network layer; reading shared data, namely obtaining the shared data by a service node needing to access the deposit and evidence shared data through a distributed account book on a node of a block chain deposit and evidence center; when the certificate-storing shared data is submitted to the block chain certificate-storing system, the block chain certificate-storing system encrypts electronic data by adopting symmetric encryption, and generates a key ciphertext according to the authority list submitted by the service system, wherein the encrypted data and the authority list generated by the key ciphertext form a safe electronic file.
6. A house transaction electronic data sharing method based on a block chain technology is characterized by comprising the following steps: each business system is respectively provided with a block chain node, an electronic file system, an electronic signature system, a timestamp server and an IBC cipher machine; the system comprises a room enterprise file management system, a block chain evidence storage center, a financial service system, a third-party system and a third-party system, wherein the room enterprise file management system generates a safe electronic file by encrypting a file to be shared and configures corresponding file access authority to upload the file to the block chain evidence storage center, the block chain evidence storage center returns a business serial number to the room enterprise file management system, the room enterprise file management system transmits the business serial number to the financial service system, the financial service system acquires the safe electronic file by combining the business serial number with the authority configured by a room enterprise, the serial number is synchronized to the third-party system, and the third-party system acquires all encrypted files by the business serial number and decrypts the encrypted files to acquire a shared file.
7. The method of claim 6, wherein the certificate authority establishes node identity and access right when the user service system is registered, the certificate authority issues a private key digital certificate bound with a digital signature to the service system, the certificate authority stores a public key digital certificate, the service system sends the digital signature to request access authentication to the certificate authority, and the certificate authority verifies the digital signature through signature stroke characteristics; after the business system finishes registration, the house-enterprise file management system encrypts the signed transaction contract and configures corresponding file access authority to upload the encrypted transaction contract to a block chain certificate storage center, the certificate storage center generates a business serial number according to the desensitization hash of transaction user information, house building address information and house-enterprise id number, and an encrypted electronic file of the transaction is added and deleted under the business serial number.
8. The method according to claim 6 or 7, characterized in that only the evidence details Hash are stored to the block chain evidence storage center for the electronic contract documents which do not need to be shared, and the original text and the evidence details are stored to the block chain evidence storage center for the electronic contract documents which need to be shared; the financial service system acquires the encrypted file by combining the business serial number with the authority configured by the house enterprise, decrypts the file by the IBC password module, edits and encrypts the file and uploads the file, the file is synchronized to a third-party system by the business serial number, and the third-party system acquires all encrypted files by the business serial number and decrypts the files by using the IBC password technology.
9. The method of claim 8, wherein the transaction document verification verifies the digital signature and biometric data of the original and the process through the evidence details, comprising: the method comprises the following steps of (1) verifying in a complete secret mode and verifying in a storage sharing mode, wherein the complete secret mode is used for storing evidence details HASH for a block chain storage system, and the evidence details are stored for a business system; the certificate storage sharing mode is used for verifying that the original text or the original text Hash is provided for the certificate storage center, and the certificate storage center is used for verifying the authenticity of the original text and the authenticity of the process.
10. The method of claim 8, wherein each certified service node interfaces with its respective service application, and the service application performs consensus calculation, consensus synchronization, shared data reading, and outputs verified certified shared data to the nodes, wherein the consensus calculation is that each certified service node agrees to a consensus on the certified shared data uplink through a consensus algorithm of a consensus layer; the consensus synchronization is that the evidence storage center synchronizes uplink data to all distributed service node accounts through a network layer; reading shared data, namely obtaining the shared data by a service node needing to access the deposit and evidence shared data through a distributed account book on a node of a block chain deposit and evidence center; when the certificate-storing shared data is submitted to the block chain certificate-storing system, the block chain certificate-storing system encrypts electronic data by adopting symmetric encryption, and generates a key ciphertext according to the authority list submitted by the service system, wherein the encrypted data and the authority list generated by the key ciphertext form a safe electronic file.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111580968.2A CN114266069B (en) | 2021-12-22 | 2021-12-22 | House transaction electronic data sharing system and method based on blockchain technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111580968.2A CN114266069B (en) | 2021-12-22 | 2021-12-22 | House transaction electronic data sharing system and method based on blockchain technology |
Publications (2)
| Publication Number | Publication Date |
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| CN114266069A true CN114266069A (en) | 2022-04-01 |
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| CN115310993A (en) * | 2022-10-12 | 2022-11-08 | 迅鳐成都科技有限公司 | Business handling system based on private chain |
| CN115392875A (en) * | 2022-08-31 | 2022-11-25 | 广州市城市规划设计有限公司 | Traditional residential protective data system and data processing method |
| CN116108502A (en) * | 2022-12-26 | 2023-05-12 | 重庆傲雄在线信息技术有限公司 | Method, system, equipment and medium for generating and decrypting secure electronic file |
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