CN111339116A - Block chain-based method for sharing open bank data - Google Patents
Block chain-based method for sharing open bank data Download PDFInfo
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- CN111339116A CN111339116A CN202010132334.XA CN202010132334A CN111339116A CN 111339116 A CN111339116 A CN 111339116A CN 202010132334 A CN202010132334 A CN 202010132334A CN 111339116 A CN111339116 A CN 111339116A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/23—Updating
- G06F16/2365—Ensuring data consistency and integrity
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q40/00—Finance; Insurance; Tax strategies; Processing of corporate or income taxes
- G06Q40/02—Banking, e.g. interest calculation or account maintenance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q40/00—Finance; Insurance; Tax strategies; Processing of corporate or income taxes
- G06Q40/04—Trading; Exchange, e.g. stocks, commodities, derivatives or currency exchange
Abstract
The invention discloses a method for sharing open bank data based on a block chain, which comprises the steps of obtaining bank open API block data; determining a bank private key, and digitally signing the open API block data through the bank private key; acquiring a bank public key, and checking the open API data through the bank public key; triggering an open API to write in an intelligent contract after the signature verification is passed; after the API information abstracts are checked to be consistent, the main node of the block chain broadcasts an API write-in request; the block chain consensus node performs consensus authentication on the write request; after the authentication is passed, opening the API data to finish the uplink; open API data stored on the blockchain is publicly accessible and non-tamperable. The method and the device can solve the problems of potential data safety hazards and user privacy disclosure caused by directly exposing open API data by using BaaP in an open bank in the prior art.
Description
Technical Field
The invention belongs to the field of data sharing in an open bank business mode, and particularly relates to a block chain-based mode for data sharing in an open bank.
Background
In recent years, with the intervention of internet companies into the financial industry, banks face unprecedented competitive pressure, personalized and intelligent financial services become basic requirements of customers for financial services, and the establishment of an open BaaP (Bank-as-a-Platform) Platform becomes the next turn-over point of financial industry revolution. At present, besides the challenges in the aspects of supervision and other services, the biggest problem is the security and privacy protection of data. Under the BaaP platform, a bank provides basic financial services, an API (application program interface) is opened, interface services are provided for indirect service customers of a third-party financial science and technology company, and a plurality of data sharing potential safety hazards exist in the process. If a hacker attacks and forges an illegal open API, data leakage can be caused, even the whole financial platform is paralyzed, and secondly, the privacy protection of the user is one of the problems to be solved. For banks, banks and financial technology companies in the same industry have a dual relationship of cooperation and competition, and the banks need to not only perfect service data through data sharing, but also ensure that the data is not leaked and tampered. How to realize the data sharing between the bank and the third party based on the open API technology and ensure the privacy and the safety of the data is the problem which is mainly solved by the open bank. Currently, most open banks share data in a BaaP (Bank-as-a-Platform) mode, but due to confidentiality and high value of Bank data, data leakage and tampering may be caused in a data sharing process, data leakage events caused by security holes existing in open data such as API (application programming interface) and SDK (software development kit) are rare, and meanwhile, the problem of user privacy leakage is often caused.
Therefore, how to provide a block chain-based approach for open bank data sharing is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides a block chain-based method for sharing data in an open bank, which can solve the problems of hidden data security and privacy disclosure of a user caused by directly exposing open API data by using BaaP in an open bank in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a blockchain based method for open bank data sharing, comprising: the client sends a transaction request to upload bank open API block data to an open bank alliance chain;
determining a bank private key, and digitally signing the open API block data through the bank private key;
acquiring a bank public key, and checking the open API data through the bank public key;
triggering an open API write-in request after the signature passes the verification and the abstract is checked to be consistent;
the block chain main node broadcasts an API write-in request;
the block chain consensus node performs consensus authentication on the write request;
after the intelligent contract passes the authentication, opening the API data to complete the chain linking;
open API data stored on the blockchain is publicly accessible and non-tamperable.
Preferably, the bank open API block data includes:
the open API publisher information comprises a publisher unit name and publisher public key information;
opening API call information, including call address, call parameter information, call mode;
and the open API version information comprises historical version information and updating content information.
Preferably, the determining the bank private key includes:
the asymmetric password pair is generated by adopting an RSA algorithm, and the key pair takes effect after signature authentication through a key authentication center in an open bank alliance chain;
the digital signature only signs the summary information of the API chunk information.
Preferably, the obtaining the bank public key, and the verifying the open API data by the bank public key includes:
signature verification is carried out on the public key information, and the digital signature of the API block information is verified by adopting the public key after the signature verification is passed;
after the verification is passed, carrying out abstract calculation on the received API block information, comparing the obtained abstract information with the received abstract information, and entering a consensus stage of API requests after the obtained abstract information is checked to be consistent;
if the verification fails, an error is reported for exiting.
Preferably, after the verification passes, triggering the open API write request includes:
packaging the API block information into a Request-Write message, wherein the Request-Write message comprises the API block information and a transaction timestamp;
a timer is started and if the request times out, the replacement master node reprocesses the request.
Preferably, the broadcasting of the API write request by the blockchain master node includes:
the verified Request-Write message comprises a set of all transaction requests within a set time;
and the host point broadcasts a Request-Write message to other replica nodes through the 5G network.
Preferably, the performing consensus on the write request by the blockchain consensus node includes:
after receiving the Request-Write message of the main node, other replica nodes carry out signature verification and abstract check, and after the check is passed, the other replica nodes broadcast the Request-Recv message to other replica nodes in the alliance chain through the 5G network;
when the replica node receives more than two thirds of Request-Recv messages, the Request-Ack messages are sent to the main node through the 5G network;
and when the main node receives more than two thirds of the Request-Ack messages, the API block information is accessed into the existing block chain, and the uplink operation of the batch API information is completed.
Preferably, after the intelligent contract authentication is passed, the open API data completes the uplink, and the details include:
receiving an uplink request, triggering message abstract verification, wherein the abstract verification passes the next verification, and otherwise, returning to fail;
triggering overtime verification, performing next verification if the overtime verification is not performed, otherwise rejecting the request, judging whether the main node fails, and if the main node fails, starting a main node switching protocol;
and after all the checks are passed, intelligent contract consensus is started, and after the consensus is completed, the API block data is added to the tail of the current block link to complete the uplink.
Preferably, the open API data stored on the blockchain is publicly accessible and non-tamperable including:
API block data are stored in safely encrypted open bank alliance chain nodes, each node has all API information copies and is stored in a chain structure, and tampering of API information is guaranteed;
the communication between the nodes is solved by a Byzantine fault-tolerant consensus algorithm, and an agreement is achieved.
An electronic device, comprising: a memory and one or more processors; a memory for storing one or more programs; the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the methods described above.
A computer-readable storage medium storing computer-executable instructions for implementing the above-described method when executed.
A computer program comprising computer executable instructions for implementing the above method when executed.
The invention has the beneficial effects that:
the invention can generate the identification data based on the data type of the data to be serialized and the data length of the data value, and compress the identification data, the data value and the data length of the data value to generate the serialization result, thereby at least partially overcoming the potential safety hazard of the data caused by a method for storing the data by using a separator to separate or switching to a JSON mode in the prior art, and reducing the performance influence on the distributed cache due to large data volume.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a block diagram of the present invention.
Fig. 2 is a schematic diagram of open bank data sharing according to the present invention.
Fig. 3 is a technical route diagram of an open bank data sharing scheme based on a block chain according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a method for open bank data sharing based on a block chain, including: the client sends a transaction request to upload bank open API block data to an open bank alliance chain;
determining a bank private key, and digitally signing the open API block data through the bank private key;
acquiring a bank public key, and checking the open API data through the bank public key;
triggering an open API write-in request after the signature passes the verification and the abstract is checked to be consistent;
the block chain main node broadcasts an API write-in request;
the block chain consensus node performs consensus authentication on the write request;
after the intelligent contract passes the authentication, opening the API data to complete the chain linking;
open API data stored on the blockchain is publicly accessible and non-tamperable.
Wherein the block data includes: a block head and a block body. The block head includes: hash value of last block, timestamp, block Hash, Merkle root. The block body includes: API distribution ID, API version, API request address, input output parameters, call mode, API entity, etc.
Generating the serialization result based on the identification data, the data value, and the data length of the data value comprises: and according to the identification data, the data length of the data value and the sequence of the data value, carrying out character string splicing to form a serialized character string result, and taking the serialized character string result as the serialized result.
In another embodiment, the bank open API block data includes:
the open API publisher information comprises a publisher unit name and publisher public key information;
opening API call information, including call address, call parameter information, call mode;
and the open API version information comprises historical version information and updating content information.
In another embodiment, the determining the bank private key comprises:
the asymmetric password pair is generated by adopting an RSA algorithm, and the key pair takes effect after signature authentication through a key authentication center in an open bank alliance chain;
the digital signature only signs the summary information of the API chunk information.
In another embodiment, the obtaining the bank public key, and the verifying the open API data by the bank public key includes:
signature verification is carried out on the public key information, and the digital signature of the API block information is verified by adopting the public key after the signature verification is passed;
after the verification is passed, carrying out abstract calculation on the received API block information, comparing the obtained abstract information with the received abstract information, and entering a consensus stage of API requests after the obtained abstract information is checked to be consistent;
if the verification fails, an error is reported for exiting.
In another embodiment, after the verification passes, triggering the open API write request includes:
packaging the API block information into a Request-Write message, wherein the Request-Write message comprises the API block information and a transaction timestamp;
a timer is started and if the request times out, the replacement master node reprocesses the request.
In another embodiment, the block chain master node broadcasting API write requests comprises:
the verified Request-Write message comprises a set of all transaction requests within a set time;
and the host point broadcasts a Request-Write message to other replica nodes through the 5G network.
In another embodiment, the block chain consensus node performing consensus authentication on the write request comprises:
after receiving the Request-Write message of the main node, other replica nodes carry out signature verification and abstract check, and after the check is passed, the other replica nodes broadcast the Request-Recv message to other replica nodes in the alliance chain through the 5G network;
when the replica node receives more than two thirds of Request-Recv messages, the Request-Ack messages are sent to the main node through the 5G network;
and when the main node receives more than two thirds of the Request-Ack messages, the API block information is accessed into the existing block chain, and the uplink operation of the batch API information is completed.
In another embodiment, after the intelligent contract authentication is passed, the open API data completes the uplink, and the details include:
receiving an uplink request, triggering message abstract verification, wherein the abstract verification passes the next verification, and otherwise, returning to fail;
triggering overtime verification, performing next verification if the overtime verification is not performed, otherwise rejecting the request, judging whether the main node fails, and if the main node fails, starting a main node switching protocol;
and after all the checks are passed, intelligent contract consensus is started, and after the consensus is completed, the API block data is added to the tail of the current block link to complete the uplink.
In another embodiment, the open API data stored on the blockchain is publicly accessible and non-tamperable including:
API block data are stored in safely encrypted open bank alliance chain nodes, each node has all API information copies and is stored in a chain structure, and tampering of API information is guaranteed;
the communication between the nodes is solved by a Byzantine fault-tolerant consensus algorithm, and an agreement is achieved.
An electronic device, comprising: a memory and one or more processors; a memory for storing one or more programs; the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the methods described above.
A computer-readable storage medium storing computer-executable instructions for implementing the above-described method when executed.
A computer program comprising computer executable instructions for implementing the above method when executed.
The invention can generate the identification data based on the data type of the data to be serialized and the data length of the data value, and compress the identification data, the data value and the data length of the data value to generate the serialization result, thereby at least partially overcoming the potential safety hazard of the data caused by a method for storing the data by using a separator to separate or switching to a JSON mode in the prior art, and reducing the performance influence on the distributed cache due to large data volume.
Transactions in the blockchain are submitted in a blockchain data format and permanently recorded in the blockchain. The process of the invention for opening API record in the block chain is as follows:
the main node checks the open API to be written in the cache area, writes the open API into a block and sends block information to other nodes;
other nodes in the block chain carry out validity check on the block information;
when the number of the nodes passing the check exceeds one third of the number of all the nodes, deleting the block information from the buffer waiting area until the open API is recorded and takes effect in the block chain;
the validity check of the block comprises checking block head and block body information, wherein the block head information comprises a Hash value of a previous block and timestamp information of a current block, and when the open API information needs to be written or updated, the main node writes the API information into the block and broadcasts the block information. When more than one third of the nodes agree on the block, the block information is written into the block chain. The node guarantees the orderliness of block addition through the block number and the Hash value of the last block recorded in the block header.
In the aspect of data privacy protection, zero-knowledge proof is adopted to protect data privacy. The verifier presents questions to the prover based on some randomness, which, if all give the correct answer, indicates that the prover has a large probability of having his claimed "knowledge". The method can verify the validity of part of information in the original information under the condition of not exposing the original information, can protect the privacy of data, and simultaneously ensures the safety and reliability of information certification. The method solves the privacy protection problem of the user information in the model through zero-knowledge proof, reduces trust cost and avoids privacy disclosure. The privacy certification is generated for the data information, so that the validity of part of content in the digital information is verified on the premise that the data does not expose complete data information. Therefore, the data privacy is protected, and the safe and effective verification of the data information is ensured. The privacy preserving working mechanism is explained as follows:
(1) the proving party provides data information and selects a verification mode;
(2) the trusted third party endorses the data information through a zero-knowledge proof tool and generates a verification key and a proof key corresponding to the proof party verification mode;
(3) the proving party generates a certification file by using the certification key;
(4) the verifier generates a verification contract by using the verification key, deploys the uplink and verifies the certification document, and can confirm whether the scheme is valid or legal under the condition of not knowing the content of the certificate.
The scheme of the invention can realize the anonymous identity authentication of the open bank user, realize the information hiding of the digital identity through zero knowledge proof, and the user can reach a financial agreement under the condition of not revealing personal information. The proving party provides endorsement information and a proving document for the verifying party to obtain a verification result without multiple interactions. By the scheme, data can be transmitted on the chain in an encrypted file mode, and meanwhile the authenticity and the validity of the data are verified. Meanwhile, the verifiable distributed account book can be realized under the condition that the identities and the transaction contents of both transaction parties are not exposed. The problem of safety verification in a multi-party data cooperation sharing process in an open bank mode is accurately solved.
The block chain has the characteristics of decentralization, no tampering, safety, reliability and the like, so that the invention provides an open bank data sharing mode based on the block chain aiming at the problems of open API consensus and user data privacy protection in the open bank data sharing application scene. Therefore, the method can ensure the safety and reliability of the bank open API sharing process, ensure that the data privacy is not leaked, and simultaneously fully play the important role of commercial banks in financial supervision based on the existing commercial bank supervision system, so that the open bank data sharing method provided by the invention has controllable anonymity, supervision, traceability and non-tamper property.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (12)
1. A method for open bank data sharing based on a blockchain is characterized by comprising the following steps: the client sends a transaction request to upload bank open API block data to an open bank alliance chain;
determining a bank private key, and digitally signing the open API block data through the bank private key;
acquiring a bank public key, and checking the open API data through the bank public key;
triggering an open API write-in request after the signature passes the verification and the abstract is checked to be consistent;
the block chain main node broadcasts an API write-in request;
the block chain consensus node performs consensus authentication on the write request;
after the intelligent contract passes the authentication, opening the API data to complete the chain linking;
open API data stored on the blockchain is publicly accessible and non-tamperable.
2. The method for open bank data sharing based on block chain according to claim 1, wherein the bank open API block data comprises:
the open API publisher information comprises a publisher unit name and publisher public key information;
opening API call information, including call address, call parameter information, call mode;
and the open API version information comprises historical version information and updating content information.
3. The method for open bank data sharing based on blockchain according to claim 1, wherein the determining the bank private key comprises:
the asymmetric password pair is generated by adopting an RSA algorithm, and the key pair takes effect after signature authentication through a key authentication center in an open bank alliance chain;
the digital signature only signs the summary information of the API chunk information.
4. The method for sharing open bank data according to claim 1, wherein the obtaining of the bank public key and the signing of the open API data by the bank public key comprises:
signature verification is carried out on the public key information, and the digital signature of the API block information is verified by adopting the public key after the signature verification is passed;
after the verification is passed, carrying out abstract calculation on the received API block information, comparing the obtained abstract information with the received abstract information, and entering a consensus stage of API requests after the obtained abstract information is checked to be consistent;
if the verification fails, an error is reported for exiting.
5. The method for open bank data sharing based on the blockchain as claimed in claim 1, wherein triggering the open API write request after the verification passes comprises:
packaging the API block information into a Request-Write message, wherein the Request-Write message comprises the API block information and a transaction timestamp;
a timer is started and if the request times out, the replacement master node reprocesses the request.
6. The method for open bank data sharing based on blockchain according to claim 1, wherein the blockchain master node broadcasting the API write request includes:
the verified Request-Write message comprises a set of all transaction requests within a set time;
and the host point broadcasts a Request-Write message to other replica nodes through the 5G network.
7. The method for open bank data sharing based on blockchain according to claim 1, wherein the block chain consensus node performing consensus authentication on the write request comprises:
after receiving the Request-Write message of the main node, other replica nodes carry out signature verification and abstract check, and after the check is passed, the other replica nodes broadcast the Request-Recv message to other replica nodes in the alliance chain through the 5G network;
when the replica node receives more than two thirds of Request-Recv messages, the Request-Ack messages are sent to the main node through the 5G network;
and when the main node receives more than two thirds of the Request-Ack messages, the API block information is accessed into the existing block chain, and the uplink operation of the batch API information is completed.
8. The method for sharing open bank data based on the blockchain according to claim 1, wherein after the smart contract is authenticated, the open API data completes the uplink, and the details include:
receiving an uplink request, triggering message abstract verification, wherein the abstract verification passes the next verification, and otherwise, returning to fail;
triggering overtime verification, performing next verification if the overtime verification is not performed, otherwise rejecting the request, judging whether the main node fails, and if the main node fails, starting a main node switching protocol;
and after all the checks are passed, intelligent contract consensus is started, and after the consensus is completed, the API block data is added to the tail of the current block link to complete the uplink.
9. The blockchain-based method for open bank data sharing according to claim 1, wherein the open API data stored on the blockchain is publicly accessible and not tampered with comprises:
API block data are stored in safely encrypted open bank alliance chain nodes, each node has all API information copies and is stored in a chain structure, and tampering of API information is guaranteed;
the communication between the nodes is solved by a Byzantine fault-tolerant consensus algorithm, and an agreement is achieved.
10. An electronic device, comprising: a memory and one or more processors; a memory for storing one or more programs; the one or more programs, when executed by one or more processors, cause the one or more processors to implement the method of any of claims 1-9.
11. A computer-readable storage medium having stored thereon computer-executable instructions for performing the method of any one of claims 1-9 when executed.
12. A computer program comprising computer executable instructions for implementing the method of any one of claims 1 to 9 when executed.
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| CN113472534A (en) * | 2021-07-23 | 2021-10-01 | 厦门潭宏信息科技有限公司 | Block chain data encryption method, equipment and storage medium |
| CN114826779A (en) * | 2022-06-22 | 2022-07-29 | 军事科学院系统工程研究院网络信息研究所 | Distributed multi-party data secure sharing method and system |
| CN114826779B (en) * | 2022-06-22 | 2022-09-02 | 军事科学院系统工程研究院网络信息研究所 | Distributed multi-party data secure sharing method and system |
| CN115840787A (en) * | 2023-02-20 | 2023-03-24 | 塔比星信息技术(深圳)有限公司 | Supply chain data sharing method, device, equipment and medium based on block chain |
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