CN111967061B - Block chain-based trusted account transfer transaction method and device - Google Patents
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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
- 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
- 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
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/08—Payment architectures
- G06Q20/10—Payment architectures specially adapted for electronic funds transfer [EFT] systems; specially adapted for home banking systems
Abstract
The invention discloses a block chain-based trusted account transfer transaction method and a block chain-based trusted account transfer transaction device, wherein the method comprises the following steps: receiving a transfer request; resolving the transfer request to obtain account information of a payment account and a collection account; inquiring a trusted account group to which the payment account belongs from the blockchain network according to account information of the payment account, wherein the trusted account group comprises: a plurality of pre-configured trusted accounts; judging whether the collection account belongs to a trusted account group according to the account information of the collection account; and determining whether to execute the transfer transaction service of the transfer request according to the judging result. The invention can ensure that each account of the transfer transaction is a trusted account by utilizing the non-falsifiability of the trusted account information on the blockchain network, and improves the security of the transfer transaction service.
Description
Technical Field
The invention relates to the technical field of blockchains, in particular to a trusted account transfer transaction method and device based on blockchains.
Background
This section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
The online transfer transaction brings convenience for people, and meanwhile, also brings security risks such as transaction information tampering, transaction link hijacking and the like, so that the technical problem that how to avoid various security risks in the online transfer transaction process of users and ensure accurate and smooth funds to be paid is currently urgently solved.
At present, the prior art mainly depends on various encryption technologies to ensure that the cash card number is not tampered, common encryption modes include HTTPs communication encryption, end-to-end encryption and the like, but the encryption modes have possibility of being cracked, and unexpected security risks are brought to transfer transactions.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the invention provides a block chain-based trusted account transfer transaction method, which is used for solving the technical problem that the conventional transfer transaction service based on encryption technology has security risk, and comprises the following steps: receiving a transfer request; resolving the transfer request to obtain account information of a payment account and a collection account; inquiring a trusted account group to which the payment account belongs from the blockchain network according to account information of the payment account, wherein the trusted account group comprises: a plurality of pre-configured trusted accounts; the blockchain network is formed by taking a plurality of trusted users as storage nodes and is used for storing account information of account numbers of transfer transactions used by the plurality of trusted users in a distributed manner; judging whether the collection account belongs to a trusted account group according to the account information of the collection account; the trusted account group is an account group where a payment account is located; according to the judgment result, determining whether to execute the transfer transaction service of the transfer request comprises the following steps: if the collection account does not belong to the trusted account group, returning the judging result to the payment terminal which initiates the transfer request, so that the payment user can determine whether to continue to execute the transfer transaction; if the user chooses to continue to execute the transfer transaction, when more than 51% of nodes in the blockchain network verify the account information of the collection account, the account information of the collection account is added into a trusted account group of the payment account and is stored on each node of the blockchain network.
The embodiment of the invention also provides a trusted account transfer transaction device based on blockchain, which is used for solving the technical problem that the conventional transfer transaction service based on encryption technology has safety risk, and comprises the following steps: the transfer request receiving module is used for receiving the transfer request; the transfer request analysis module is used for analyzing the transfer request to obtain account information of a payment account and a collection account; the block chain inquiry module is used for inquiring a trusted account group to which the payment account belongs from the block chain network according to the account information of the payment account, wherein the trusted account group comprises: a plurality of pre-configured trusted accounts; the blockchain network is formed by taking a plurality of trusted users as storage nodes and is used for storing account information of account numbers of transfer transactions used by the plurality of trusted users in a distributed manner; the collection account verification module is used for judging whether the collection account belongs to a trusted account group according to account information of the collection account; the trusted account group is an account group where a payment account is located; the transfer transaction service execution module is used for determining whether to execute the transfer transaction service of the transfer request according to the judgment result; a transfer transaction service execution module comprising: the second execution module is specifically configured to return a judgment result to the payment terminal that initiates the transfer request if the collection account does not belong to the trusted account group, so that the payment user determines whether to continue to execute the transfer transaction; if the user chooses to continue to execute the transfer transaction, when more than 51% of nodes in the blockchain network verify the account information of the collection account, the account information of the collection account is added into a trusted account group of the payment account and is stored on each node of the blockchain network.
The embodiment of the invention also provides a computer device which is used for solving the technical problem that the conventional transfer transaction service based on the encryption technology has safety risk.
The embodiment of the invention also provides a computer readable storage medium which is used for solving the technical problem that the conventional transfer transaction service based on encryption technology has safety risk.
In the embodiment of the invention, a blockchain network for storing transaction account data in a distributed manner is constructed according to a plurality of pre-configured trusted accounts, so that whether a collection account belongs to a trusted account group of a payment account is judged based on a trusted account group list stored on the blockchain network, and whether transfer transaction business is executed is further determined according to a judgment result. Compared with the technical scheme of realizing the transfer transaction service by adopting the encryption technology in the prior art, the embodiment of the invention can ensure that each account of the transfer transaction is a trusted account by utilizing the non-falsifiability of the trusted account information on the blockchain network, improve the security of the transfer transaction service, avoid the possibility of cracking or falsifying the transaction information in the transmission process, discover the attack in time and achieve the purpose of accurately checking the transfer funds.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a flow chart of a method for blockchain-based trusted account transfer transaction in accordance with embodiments of the present invention;
FIG. 2 is a flowchart of an alternative blockchain-based trusted account transfer transaction method provided in an embodiment of the present invention;
FIG. 3 is a block chain based trusted account transfer transaction flow diagram provided in an embodiment of the present invention;
FIG. 4 is a schematic diagram of a blockchain-based trusted account transfer transaction device in accordance with embodiments of the present invention;
FIG. 5 is a schematic diagram of an alternative blockchain-based trusted account transfer transaction device in accordance with embodiments of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings. The exemplary embodiments of the present invention and their descriptions herein are for the purpose of explaining the present invention, but are not to be construed as limiting the invention.
In the embodiment of the invention, a trusted account transfer transaction method based on blockchain is provided, and fig. 1 is a flowchart of a trusted account transfer transaction method based on blockchain, as shown in fig. 1, and the method may include the following steps:
s101, receiving a transfer request.
It should be noted that, the above transfer request is a transfer request sent by a payment user through a payment terminal, where the transfer request includes account information of a payment account and a collection account; when the transfer transaction server receives the transfer request, the transfer transaction service is not directly executed, but the collection account is verified, and when the collection account passes the verification, the transfer transaction service is executed, so that the situation that the collection account is tampered is avoided.
S102, analyzing the transfer request to obtain account information of a payment account and a collection account.
It should be noted that, the account information includes, but is not limited to: a user name and a card number.
S103, inquiring a trusted account group to which the payment account belongs from the blockchain network according to account information of the payment account, wherein the trusted account group comprises: a plurality of trusted accounts pre-configured.
It should be noted that, the blockchain network in the embodiment of the present invention is a blockchain network formed by a plurality of trusted users as storage nodes, and is used for storing account information of a plurality of trusted accounts (that is, account numbers of transfer transactions that can be used by the trusted users) in a distributed manner. In implementation, multiple trusted accounts may be preconfigured, for example, accounts of multiple users in the same enterprise are one trusted account group, accounts of multiple users in the same family are one trusted account group, and accounts of multiple users in the same school are one trusted account group.
S104, judging whether the collection account belongs to the trusted account group according to the account information of the collection account.
It should be noted that, the trusted account group in S104 is an account group where the payment account is located, where the account group includes a plurality of trusted accounts, if the collection account does not belong to the trusted account group, the collection account may be tampered, and the execution of the transfer transaction may be automatically refused, or the determination result may be returned to the payment terminal that initiates the transfer request, so that the payment user determines whether to continue to execute the transfer transaction. If the user chooses to continue to execute the transfer transaction, the collection account may be a newly added trusted account of the payment user, so that the collection account can be verified by the blockchain network and added into the trusted account group to which the payment account belongs if the collection account passes the verification.
S105, determining whether to execute the transfer transaction service of the transfer request according to the judging result.
It should be noted that, after verifying the collection account, the system may automatically determine whether to execute the transfer transaction service of the transfer request, or may manually select to determine whether to execute the transfer transaction service of the transfer request.
In one embodiment, the step S105 may be implemented by: if the collection account belongs to the trusted account group, executing a transfer transaction service of the transfer request; if the collection account does not belong to the trusted account group, the transfer transaction service of executing the transfer request is refused. By this embodiment, the purpose of automatically blocking risk transactions can be achieved.
In another embodiment, the step S105 may be implemented by: returning the judgment result to the initiating terminal of the transfer request; receiving a transfer execution instruction sent by a payment user through an initiating terminal; and determining whether to execute the transfer transaction service of the transfer request according to the transfer execution instruction. According to the embodiment, the judgment result is returned to the user, and the user determines whether to execute the transfer transaction service, so that the effect of early warning the risk account can be achieved, the possibility of false alarm can be avoided, and the user experience is improved.
Optionally, in a case where the collection account does not belong to the trusted account group, as shown in fig. 2, the blockchain-based trusted account transfer transaction method provided in the embodiment of the present invention may further include the following steps:
s106, the account information of the collection account is sent to a blockchain network, wherein the blockchain network verifies the account information of the collection account based on a consensus mechanism;
s107, when the account information of the collection account is verified through the blockchain network, the account information of the collection account is added to the trusted account group to which the payment account belongs.
In a specific implementation, when more than 51% of nodes in the blockchain network verify account information of a collection account, the account information of the collection account is added into a trusted account group of a payment account and stored on each node of the blockchain network.
Fig. 3 is a block chain-based trusted account transfer transaction flow chart provided in an embodiment of the present invention, as shown in fig. 3, in the embodiment of the present invention, by maintaining multiple user groups that are in the same enterprise or where transactions frequently occur, a block chain network composed of accounts of trusted users is constructed, and transaction account data is stored in a distributed manner. When transfer transaction is carried out among all accounts in the trusted account group, after the receiving bank receives the transaction information, the transaction information is sent to the blockchain network, and whether the receiving account belongs to the trusted account group of the account of the transfer source or not is searched, so that the attack that the transfer transaction information is tampered in the transmission process can be timely found. In order to avoid the possibility that the receiving user becomes a new trusted user, false alarm is reduced, the receiving user of the transfer transaction is broadcasted to the blockchain network, all nodes in the blockchain network verify the receiving account, if more than 51% of the nodes verify, the receiving account is put into the trusted account group of the payment account, and the user is added in the trusted account group of each user node.
Taking fig. 3 as an example, two application scenarios are described below:
first, the case where the collection account is tampered with by an attack:
(1) user A of bank J wants to transfer money to user B of bank K, so initiates transfer transaction request;
(2) in the transfer transaction data packet transmission process, an attacker breaks the data packet and changes a collection account number into an E account number of an own L bank;
(3) after receiving the transfer transaction request, the L bank firstly does not finish the transfer operation urgently, but sends the transfer transaction request to the attack monitoring module;
(4) after receiving the transfer transaction request, the attack monitoring module analyzes a transfer source account A and a receiving account E from the transfer transaction request, and queries a trusted user group to which the user A belongs from the blockchain network according to the analyzed transfer source account A;
(5) the node 1 sends the trusted user group of the user A maintained by the node to an attack monitoring module, and the attack monitoring module searches and judges whether the collection account E is in the trusted user group according to the trusted users in the received trusted user group list, and discovers that the E is not in the trusted user group of the user A;
(6) and the attack monitoring module sends the result to the user A, and if the user A finds that E is not the user B wanting to transfer the money, the transfer operation is stopped.
Second, the case where the paying user transfers to a collection account other than the trusted account group:
if the user wants to transfer to the new user F, the authentication judging process is the same as the first case, and after the attack monitoring module sends the result to the user a, the new user can be added into the trusted user group through the following steps.
(7) The user A sends the willingness of the user A to transfer to F to the attack monitoring module;
(8) the attack monitoring module sends a new request of the user F to the node 1;
(9) and broadcasting in the blockchain by the node 1, after receiving the broadcasting by the user A, B, C, D …, judging the validity of the user F, and if more than 51% of users agree to join F into the trusted user group, respectively adding the user F on the account book of the respective node, and completing the transfer transaction.
In the embodiment of the invention, the trusted system among different banks and different clients is built by simulating the block chain data storage mode, the decentralization of the client group is realized, the authenticity of the client group is ensured, and the safety, the reliability and the legality of the data storage are improved.
Based on the same inventive concept, the embodiment of the invention also provides a trusted account transfer transaction device based on a blockchain, as described in the following embodiment. Because the principle of the device for solving the problem is similar to that of the trusted account transfer transaction method based on the blockchain, the implementation of the device can be referred to the implementation of the trusted account transfer transaction method based on the blockchain, and the repetition is omitted.
FIG. 4 is a schematic diagram of a trusted account transfer transaction device based on blockchain, according to an embodiment of the present invention, as shown in FIG. 4, the device includes: the transfer request receiving module 41, the transfer request parsing module 42, the blockchain inquiring module 43, the receipt account verifying module 44, and the transfer transaction service executing module 45.
Wherein, the transfer request receiving module 41 is configured to receive a transfer request; the transfer request analysis module 42 is configured to analyze the transfer request to obtain account information of a payment account and a collection account; the blockchain inquiry module 43 is configured to inquire, from the blockchain network, a trusted account group to which the payment account belongs according to account information of the payment account, where the trusted account group includes: a plurality of pre-configured trusted accounts; the collection account verification module 44 is configured to determine whether the collection account belongs to a trusted account group according to account information of the collection account; the transfer transaction service execution module 45 is configured to determine whether to execute the transfer transaction service of the transfer request according to the determination result.
In one embodiment, as shown in fig. 5, the above-mentioned transfer transaction service execution module 45 may include: a first execution module 451 for executing a transfer transaction service of the transfer request if the collection account belongs to the trusted account group; the second execution module 452 is configured to reject the transfer transaction service of the transfer request if the collection account does not belong to the trusted account group.
In one embodiment, as shown in fig. 5, the blockchain-based trusted account transfer transaction device provided in the embodiment of the present invention may further include: the trusted account updating module 46 is configured to send account information of the collection account to the blockchain network when the collection account does not belong to the trusted account group, and to add the account information of the collection account to the trusted account group to which the payment account belongs when the account information of the collection account is verified by the blockchain network, wherein the blockchain network verifies the account information of the collection account based on a consensus mechanism.
In one embodiment, as shown in fig. 5, the above-mentioned transfer transaction service execution module 45 may include: the collection account verification result returning module 453 is configured to return the determination result to the initiating terminal of the transfer request; the user instruction acquisition module 454 is used for receiving a transfer execution instruction sent by a payment user through the initiating terminal; the third execution module 455 is configured to determine whether to execute the transfer transaction service of the transfer request according to the transfer execution instruction.
Based on the same inventive concept, the embodiment of the invention also provides a computer device, which is used for solving the technical problem that the conventional transfer transaction service based on encryption technology has safety risk.
Based on the same inventive concept, the embodiment of the invention also provides a computer readable storage medium for solving the technical problem that the conventional encryption technology-based account transfer transaction service has a security risk, wherein the computer readable storage medium stores a computer program for executing the blockchain-based trusted account transfer transaction method.
In summary, the embodiment of the invention provides a method, a device, a computer device and a computer readable storage medium for transferring and trading a trusted account based on a blockchain, which constructs a blockchain network for storing transaction account data in a distributed manner according to a plurality of pre-configured trusted accounts, so as to determine whether a collection account belongs to a trusted account group of a payment account based on a trusted account group list stored on the blockchain network, and further determine whether to execute a transfer transaction service according to a determination result. Compared with the technical scheme of realizing the transfer transaction service by adopting the encryption technology in the prior art, the embodiment of the invention can ensure that each account of the transfer transaction is a trusted account by utilizing the non-falsifiability of the trusted account information on the blockchain network, improve the security of the transfer transaction service, avoid the possibility of cracking or falsifying the transaction information in the transmission process, discover the attack in time and achieve the purpose of accurately checking the transfer funds.
In the embodiment of the invention, the collection account is verified by utilizing the trusted account group stored on the blockchain network, so that complicated and repeated verification among different banks and different clients in the prior art is simplified, verification times and links are reduced, possible verification logic defects are synchronously reduced, and verification problems are avoided.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A blockchain-based trusted account transfer transaction method, comprising:
receiving a transfer request;
analyzing the transfer request to obtain account information of a payment account and a collection account;
inquiring a trusted account group to which a payment account belongs from a blockchain network according to account information of the payment account, wherein the trusted account group comprises: a plurality of pre-configured trusted accounts; the blockchain network is formed by taking a plurality of trusted users as storage nodes and is used for storing account information of account numbers of transfer transactions used by the plurality of trusted users in a distributed manner; judging whether the collection account belongs to the trusted account group according to the account information of the collection account; the trusted account group is an account group where a payment account is located;
determining whether to execute the transfer transaction service of the transfer request according to the judgment result, including:
if the collection account does not belong to the trusted account group, returning the judging result to the payment terminal which initiates the transfer request, so that the payment user can determine whether to continue to execute the transfer transaction; if the user chooses to continue to execute the transfer transaction, when more than 51% of nodes in the blockchain network verify the account information of the collection account, the account information of the collection account is added into a trusted account group of the payment account and is stored on each node of the blockchain network.
2. The method of claim 1, wherein determining whether to perform the transfer transaction service of the transfer request according to the determination result comprises:
and if the collection account belongs to the trusted account group, executing the transfer transaction service of the transfer request.
3. The method of claim 2, wherein in the event that the collection account does not belong to the trusted account group, the method further comprises:
transmitting account information of the collection account to a blockchain network, wherein the blockchain network verifies the account information of the collection account based on a consensus mechanism;
if the account information of the collection account is verified by the blockchain network, the account information of the collection account is added to a trusted account group to which the payment account belongs.
4. The method of claim 1, wherein determining whether to perform the transfer transaction service of the transfer request according to the determination result comprises:
returning the judgment result to the initiating terminal of the transfer request;
receiving a transfer execution instruction sent by a payment user through the initiating terminal;
and determining whether to execute the transfer transaction service of the transfer request according to the transfer execution instruction.
5. A blockchain-based trusted account transfer transaction device, comprising:
the transfer request receiving module is used for receiving the transfer request;
the transfer request analysis module is used for analyzing the transfer request to obtain account information of a payment account and a collection account;
the block chain inquiry module is used for inquiring a trusted account group to which the payment account belongs from the block chain network according to the account information of the payment account, wherein the trusted account group comprises: a plurality of pre-configured trusted accounts; the blockchain network is formed by taking a plurality of trusted users as storage nodes and is used for storing account information of account numbers of transfer transactions used by the plurality of trusted users in a distributed manner;
the collection account verification module is used for judging whether the collection account belongs to the trusted account group according to the account information of the collection account; the trusted account group is an account group where a payment account is located;
the transfer transaction service execution module is used for determining whether to execute the transfer transaction service of the transfer request according to the judgment result;
a transfer transaction service execution module comprising:
the second execution module is specifically configured to return a judgment result to the payment terminal that initiates the transfer request if the collection account does not belong to the trusted account group, so that the payment user determines whether to continue to execute the transfer transaction; if the user chooses to continue to execute the transfer transaction, when more than 51% of nodes in the blockchain network verify the account information of the collection account, the account information of the collection account is added into a trusted account group of the payment account and is stored on each node of the blockchain network.
6. The apparatus of claim 5, wherein the transfer transaction service execution module comprises:
and the first execution module is used for executing the transfer transaction service of the transfer request if the collection account belongs to the trusted account group.
7. The apparatus of claim 6, wherein the apparatus further comprises:
and the trusted account updating module is used for sending the account information of the collection account to a blockchain network when the collection account does not belong to the trusted account group, and adding the account information of the collection account to the trusted account group to which the payment account belongs when the account information of the collection account is verified through the blockchain network, wherein the blockchain network verifies the account information of the collection account based on a consensus mechanism.
8. The apparatus of claim 5, wherein the transfer transaction service execution module comprises:
the collection account verification result returning module is used for returning the judgment result to the initiating terminal of the transfer request;
the user instruction acquisition module is used for receiving a transfer execution instruction sent by a payment user through the initiating terminal;
and the third execution module is used for determining whether to execute the transfer transaction service of the transfer request according to the transfer execution instruction.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the blockchain-based trusted account transfer transaction method of any of claims 1 to 4 when the computer program is executed.
10. A computer readable storage medium, characterized in that it stores a computer program which, when executed by a processor, implements the blockchain-based trusted account transfer transaction method of any of claims 1 to 4.
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| WO2017063543A1 (en) * | 2015-10-13 | 2017-04-20 | 中国银联股份有限公司 | Electronic cash loading method, apparatus, system and computer readable storage medium |
| CN109787771A (en) * | 2019-01-02 | 2019-05-21 | 浙江师范大学 | A kind of identification authorization method and system based on block chain |
| CN110060054A (en) * | 2019-02-19 | 2019-07-26 | 阿里巴巴集团控股有限公司 | Method, node, system and the storage medium of secret protection are realized in block chain |
| CN110633970A (en) * | 2019-09-19 | 2019-12-31 | 深圳前海环融联易信息科技服务有限公司 | Digital asset sorting method and device, computer equipment and storage medium |
| CN111461733A (en) * | 2020-04-03 | 2020-07-28 | 银清科技有限公司 | Account information query method, device and system based on block chain |
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