CN109741182B - Safe data transaction method based on block chain token issuance - Google Patents
Safe data transaction method based on block chain token issuance Download PDFInfo
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- CN109741182B CN109741182B CN201811636011.3A CN201811636011A CN109741182B CN 109741182 B CN109741182 B CN 109741182B CN 201811636011 A CN201811636011 A CN 201811636011A CN 109741182 B CN109741182 B CN 109741182B
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Abstract
The invention discloses a safe data transaction method based on block chain token issuing, and relates to the field of block chain intelligent contracts and token issuing. In the method, a data provider stores data under a chain and records the data mark to a block chain intelligent contract, a data buyer purchases a token through the block chain intelligent contract, and the data acquisition is transmitted in a form of token verification under the chain. The invention solves the problems of safety and credibility of data transaction by combining the blockchain, ensures the consistency of data exchange by issuing the token through the blockchain and avoids the problem of repudiation by any party.
Description
Technical Field
The invention relates to the field of blockchain intelligent contracts and token issuing, in particular to a secure data transaction method based on blockchain token issuing.
Background
Smart contracts (english: Smart contracts) are a computer protocol that aims to propagate, verify or execute contracts in an informative way. Smart contracts allow trusted transactions to be conducted without third parties, which transactions are traceable and irreversible.
In computer terminology, a token represents an object for which the right to perform some operation is performed, by which a visitor can verify the identity of the visitor and recognize the visitor's access rights based on the token: time limit, access object and operation authority, etc. in the form of token, we can conveniently and effectively protect their own resources.
A safety data transaction method based on block chain token issuing is a safety data transaction method which is obtained by combining the characteristics of non-tamper property of a block chain intelligent contract and forced execution according to a set contract and the advantage that a token can carry out effective authority control.
The existing technology has the main defects that the data transaction records do not have authority and credibility guarantee, and if one party plays a role, the interest losing party cannot provide credible evidence for a third party authority, so that own interests cannot be well protected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a safe data transaction method based on block chain token issuing.
The purpose of the invention is realized by the following technical scheme: a secure data transaction method based on block chain token issuance includes following steps:
(1) the data buyer freezes a fund to be paid to the data provider from the blockchain;
(2) the data provider signs the token field required by the data buyer and uploads the token field to the intelligent contract, the intelligent contract verifies the signature, if the verification is passed, the intelligent contract transfers funds to the token provider according to a set logic, otherwise, the token issuance fails;
(3) the data buyer acquires the issued token from the blockchain and takes the token issued by the blockchain intelligent contract to acquire data;
(4) the data provider verifies the token carried by the data buyer when obtaining the data, only a reasonable token can transmit the data to the other side, otherwise, the data is refused to be transmitted;
further, the data provider needs to register its own rules, including needed capital, time, and usage information, into the blockchain intelligent contracts.
Further, the data purchaser freezes the funds and needs to notify the data provider to complete the token signing step.
Further, in order to improve the token issuing efficiency, after the data provider signs and acquires the fund, the data provider needs to actively inform the data buyer to acquire the token on the blockchain intelligent contract.
Further, for a data provider, it is necessary to set permissions for all data accesses, and only a reasonable token can grant access.
The invention has the following beneficial effects:
the invention solves the problems of safety and credibility of data transaction by combining the blockchain, ensures the consistency of data exchange by issuing the token through the blockchain and avoids the problem of repudiation by any party.
Drawings
FIG. 1 is a flow diagram of a secure data transaction method based on blockchain token issuance.
Detailed Description
The present invention will be described in detail below with reference to the drawings and specific embodiments, and the objects and effects of the present invention will become more apparent.
As shown in fig. 1, a secure data transaction method based on blockchain token issuance includes the following steps:
(1) the data buyer freezes a fund to be paid to the data provider from the blockchain;
(2) the data provider signs the token field required by the data buyer and uploads the token field to the intelligent contract, the intelligent contract verifies the signature, if the verification is passed, the intelligent contract transfers funds to the token provider according to a set logic, otherwise, the token issuance fails;
(3) the data buyer acquires the issued token from the blockchain and takes the token issued by the blockchain intelligent contract to acquire data;
(4) the data provider verifies the token carried by the data buyer when obtaining the data, only a reasonable token can transmit the data to the other side, otherwise, the data is refused to be transmitted;
preferably, the data provider needs to register its own rules, including the needed funds, time, and usage information, with the blockchain intelligent contracts.
Preferably, the data purchaser has frozen funds, requiring the data provider to be notified to complete the signature step of the token.
Preferably, in order to improve the token issuing efficiency, after the data provider signs and acquires the fund, the data provider needs to actively inform the data buyer to acquire the token on the blockchain intelligent contract.
Preferably, for a data provider, it is necessary to set permissions for all data accesses, and only reasonable tokens can grant access.
Claims (5)
1. A secure data transaction method based on block chain token issuance is characterized in that in the method, a data provider stores data under a chain and saves the data mark on a block chain intelligent contract, and the method specifically comprises the following steps:
(1) the data buyer freezes a fund to be paid to the data provider on the blockchain;
(2) the data provider signs the token field required by the data buyer and uploads the token field to the intelligent contract, the intelligent contract verifies the signature, if the verification is passed, the intelligent contract transfers funds to the token provider according to a set logic, otherwise, the token issuance fails;
(3) the data buyer acquires the issued token from the blockchain and takes the token issued by the blockchain intelligent contract to acquire data;
(4) and the data provider verifies the token carried by the data buyer when acquiring the data, and only a reasonable token can transmit the data to the other party, otherwise, the data is refused to be transmitted.
2. The method of claim 1, wherein the data provider is required to register its own rules, including required funds, time, and usage information, with the blockchain smart contracts.
3. The method of claim 1, wherein the data purchaser has frozen funds requiring notification to the data provider to complete the token signing step.
4. The secure data transaction method based on blockchain token issuance according to claim 1, wherein in order to improve token issuance efficiency, after signing and acquiring the fund, the data provider needs to actively notify the data buyer to acquire the token on the blockchain intelligent contract.
5. The method of claim 1, wherein for a data provider, all data access is required to set permissions, and only legitimate tokens can grant access.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811636011.3A CN109741182B (en) | 2018-12-29 | 2018-12-29 | Safe data transaction method based on block chain token issuance |
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| CN201811636011.3A CN109741182B (en) | 2018-12-29 | 2018-12-29 | Safe data transaction method based on block chain token issuance |
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| CN109741182A CN109741182A (en) | 2019-05-10 |
| CN109741182B true CN109741182B (en) | 2021-08-03 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115001715B (en) * | 2022-08-02 | 2022-10-21 | 药融云数字科技(成都)有限公司 | Intelligent encryption contract detection method based on block chain and terminal |
| CN115423471A (en) * | 2022-08-31 | 2022-12-02 | 三星电子（中国）研发中心 | Safety protection method and device for NFT digital assets |
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- 2018-12-29 CN CN201811636011.3A patent/CN109741182B/en active Active
Patent Citations (7)
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| CN107169371A (en) * | 2017-04-27 | 2017-09-15 | 北京众享比特科技有限公司 | A kind of database operation method and system based on block chain |
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| CN108399571A (en) * | 2018-01-30 | 2018-08-14 | 厦门快商通信息技术有限公司 | Unsecured method of commerce and system based on block chain intelligence contract |
| CN108681909A (en) * | 2018-05-18 | 2018-10-19 | 浙江超脑时空科技有限公司 | The intelligent anti-counterfeiting device realized based on block chain intelligence contract and method for anti-counterfeit of tracing to the source |
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