HANDING REQUESTS IN A CONSENSUS NETWORK

• US 20180260909A1
• Filed: 02/20/2018
• Published: 09/13/2018
• Est. Priority Date: 03/08/2017
• Status: Active Grant

• Current Assignee: Advanced New Technologies Company Limited (Ant Group Co., Ltd.)
• Original Assignee: Alibaba Group Holding Ltd.
• Inventors: Li, Ning
• Granted Patent: US 10,796,379 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 21/602 Providing cryptographic facilities or services
• CPC Class Codes: G06Q 10/067 Enterprise or organisation modelling
• CPC Class Codes: G06Q 20/38215 Use of certificates or encrypted proofs of transaction rights
• CPC Class Codes: G06Q 20/3827 Use of message hashing
• CPC Class Codes: G06Q 20/3829 involving key management
• CPC Class Codes: G06Q 20/389 Keeping log of transactions for guaranteeing non-repudiation of a transaction
• CPC Class Codes: G06Q 20/4016 involving fraud or risk level assessment in transaction processing
• CPC Class Codes: G06Q 2220/00 Business processing using cryptography postage metering system using cryptography G06Q2250/05
• CPC Class Codes: G06Q 40/12 Accounting
• CPC Class Codes: G06Q 50/188 Electronic negotiation
• CPC Class Codes: H04L 9/0637 Modes of operation, e.g. cipher block chaining [CBC], electronic codebook [ECB] or Galois/counter mode [GCM]
• CPC Class Codes: H04L 9/50 using hash chains, e.g. blockchains or hash trees

Abstract

The present disclosure describes techniques for using a consensus network for handling requests. In one implementation, a first block chain node sends, to a consensus network, a business request generated according to business information sent by a user. A second block chain node in the consensus network verifies the legality of a business result obtained by a third block chain node according to the business request. The first block chain node executes a first designated operation by triggering a first smart contract in the business request. The first block chain node utilizes the smart contract executed automatically. The first block chain node automatically accomplishes the first designated operation by using the first smart contract once the business result passes the verification carried out by the second block chain node. The second block chain node verifies the business result obtained by the third block chain node.

Claims

1. A method comprising:

receiving, by a first block chain node, business information sent by a user;

generating a corresponding business request according to the business information, the business request comprising a first smart contract generated according to the business information; and

sending the business request to a consensus network, wherein a third block chain node in the consensus network obtains a corresponding business result according to the business request and executes a first designated operation by triggering the first smart contract when it is determined that a second block chain node in the consensus network verifies the business result as legal.

2. The method of claim 1, wherein generating the first smart contract according to the business information comprises compiling the business information by using a preset solidity commandline (SOLC) compiler to obtain the first smart contract.

3. The method of claim 1, wherein generating the corresponding business request according to the business information comprises generating a business request comprising the first smart contract and an account address of the user according to the business information, and wherein the first designated operation is used for transferring a first set quantity of designated resources in the account address of the user to an account address of the third block chain node.

4. The method of claim 1, wherein sending the business request to the consensus network comprises sending the business request comprising a first smart contract in a check pending state to the consensus network.

5. The method of claim 3, wherein after sending the business request to a consensus network, the method further comprises freezing the first set quantity of designated resources in the account address of the user by using the first smart contract when it is determined that the second block chain node verifies the business request as legal.

6. The method of claim 1, wherein after sending the business request to a consensus network, the method further comprises:

receiving a query message, sent by the third block chain node, for processing the business request; and

granting an access permission to the third block chain node when it is determined that the business request is processed by the third block chain node, wherein the third block chain node acquires the business information from the first block chain node and obtains the business result according to the business information.

7. The method of claim 1, wherein sending the business request to a consensus network comprises sending the business request to block chain nodes in the consensus network to establish a consensus, and wherein the method further comprises writing the business request into a block chain of the first block chain node after it is determined that the block chain nodes in the consensus network establish a consensus about the business request.

8. The method of claim 1, further comprising acquiring the business result from the third block chain node or the second block chain node when it is determined that the second block chain node verifies the business result as legal.

9. The method of claim 1, further comprising:

acquiring, by the second block chain node from the consensus network, business feedback information sent by a third block chain node;

acquiring a business result from the third block chain node according to the business feedback information, the business result being generated by the third block chain node according to a business request sent by a first block chain node to the consensus network; and

when the business result is verified as legal, enabling the first block chain node to execute a first designated operation by triggering a first smart contract.

10. The method of claim 9, wherein enabling the first block chain node to execute a first designated operation by triggering a first smart contract comprises executing a signature on the business feedback information, wherein the signature is used for enabling a second smart contract included in the business feedback information to change its own state from a verification pending state to a verification successful state, the second smart contract is obtained by the third block chain node according to the business request, and the second smart contract in the verification successful state is used for enabling the second smart contract to trigger the first block chain node to execute the first designated operation by using the first smart contract.

11. The method of claim 9, further comprising instructing block chain nodes in the consensus network to establish a consensus about the business feedback information when the business result is verified as legal and writing the business feedback information into a block chain of the second block chain node when it is determined that the consensus about the business feedback information is established.

12. The method of claim 11, further comprising refusing to sign the business feedback information when the business result is verified as illegal, wherein the refusing to sign is used for enabling the third block chain node to execute a second designated operation by triggering the second smart contract.

13. The method of claim 9, wherein before acquiring, by a second block chain node from a consensus network, business feedback information sent by a third block chain node, the method further comprises:

acquiring a business request sent by the first block chain node to the consensus network, the business request comprising a first smart contract in a check pending state;

acquiring, according to the business request, business information corresponding to the business request from the first block chain node;

verifying whether the business information is legal;

upon determining that the business information is legal, signing on the business request to trigger the first smart contract to change from the check pending state to an acceptance pending state, the first smart contract in the acceptance pending state being used for enabling the first block chain node to freeze a first set quantity of designated resources in an account address of a user by using the first smart contract; and

upon determining that the business information is not legal, refusing to sign the business request, wherein the first block chain node determines that the business request is failed to be accepted.

14. The method of claim 13, further comprising instructing the block chain nodes in the consensus network to establish a consensus about the business request when the business information is verified as legal, and writing the business request into a block chain of the second block chain node after it is determined that the consensus about the business request is established.

15. The method of claim 9, further comprising:

acquiring, by the third block chain node, a business request sent by the first block chain node by using the consensus network, the business request comprising a first smart contract generated by the first block chain node according to business information sent by a user;

obtaining a business result and business feedback information according to the business request; and

sending the business feedback information to the consensus network, wherein a second block chain node in the consensus network acquires the business result from the third block chain node according to the business feedback information, and when the business result is verified as legal, the first block chain node is enabled to execute a first designated operation by triggering the first smart contract.

16. The method of claim 15, wherein acquiring, by a third block chain node, the business request sent by a first block chain node by using a consensus network comprises gaining a business request comprising a first smart contract in an acceptance pending state.

17. The method of claim 15, wherein the first designated operation is used for enabling the first block chain node to transfer a first set quantity of designated resources in an account address of the user included in the business request to an account address of the third block chain node, and wherein obtaining a business result according to the business request comprises:

obtaining a second smart contract and the business result according to the business request; and

obtaining business feedback information according to the business request including generating, according to the business result, the business feedback information comprising the second smart contract, abstract information of the business result, and the account address of the third block chain node.

18. The method of claim 17, wherein obtaining the second smart contract according to the business request comprises:

determining a business level and a business type of the business request; and

determining the second smart contract according to the business level, the business type, and the first smart contract.

19. A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:

receiving, by a first block chain node, business information sent by a user;

generating a corresponding business request according to the business information, the business request comprising a first smart contract generated according to the business information; and

sending the business request to a consensus network, wherein a third block chain node in the consensus network obtains a corresponding business result according to the business request and executes a first designated operation by triggering the first smart contract when it is determined that a second block chain node in the consensus network verifies the business result as legal.

20. A computer-implemented system, comprising:

one or more computers; and

one or more computer memory devices interoperably coupled with the one or more computers and having tangible, non-transitory, machine-readable media storing one or more instructions that, when executed by the one or more computers, perform one or more operations comprising;

receiving, by a first block chain node, business information sent by a user;

generating a corresponding business request according to the business information, the business request comprising a first smart contract generated according to the business information; and

sending the business request to a consensus network, wherein a third block chain node in the consensus network obtains a corresponding business result according to the business request and executes a first designated operation by triggering the first smart contract when it is determined that a second block chain node in the consensus network verifies the business result as legal.