Data authorization method for smart contracts

Data authorization method for smart contracts

Background and purpose:

Background technology: Blockchain technology, as a decentralized, open, transparent, and tamper-proof distributed database technology, is suitable for scenarios with high requirements for data reliability.

Purpose: To provide a data authorization method and device based on smart contracts to achieve secure data authorization between data owners and users.

Technical solution overview:

Method: The blockchain node receives the data acquisition transaction submitted by the data user, executes the data authorization smart contract called by the transaction, obtains the target data when confirming that the data user has been authorized, and enables the data user to obtain the data or perform the result after the preset operation.

Device: It includes a receiving unit, an execution unit, etc. to realize the functions of the above method.

Specific implementation steps:

Receive data acquisition transaction: The blockchain node receives the transaction submitted by the data user requesting to obtain the target data.

Execute the data authorization smart contract: The node executes the smart contract called by the transaction and obtains the data after confirming the authorization.

Data processing and encryption: Encrypt and decrypt the target data in a trusted execution environment to ensure data security.

Operation and result provision: Perform preset operations on the data and provide the results to the data user.

Data privacy and authorization management:

Privacy level processing: Determine whether to provide data directly or provide calculation results based on the privacy level of the data.

Authorization management: The data authorization smart contract contains a list of authorized parties to confirm whether the data user has been authorized.

Temporary authorization request: The data user can temporarily request authorization, and the data owner authorizes through the authorization confirmation transaction.

Application of blockchain and smart contracts:

Blockchain type: Supports multiple types such as public chain, private chain and alliance chain, and provides a decentralized or partially decentralized data authorization environment.

Smart contract function: A contract created and executed on the blockchain, which defines logic through code to realize an automated data authorization process.

System architecture and interaction process:

Example environment: Describes an example environment including computing devices, blockchain networks and client devices.

Interaction process: Detailed description of the interaction process between data users, blockchain nodes and data owners, including steps such as authorization request, authorization confirmation, data acquisition and result provision.

Device and equipment implementation:

Device structure: The data authorization device includes a receiving unit, an execution unit, a data encryption unit, etc., to realize the specific function of data authorization.

Device implementation: At the hardware level, the functions of the device are realized through components such as processors and internal memory; at the software level, the method flow is realized by executing executable instructions.

Summary of short answer questions:

What is the background technology?

Background technology: Blockchain technology, as a decentralized, open, transparent, and tamper-proof distributed database technology, is suitable for scenarios with high demand for data reliability.

What is the purpose?

Purpose: To provide a data authorization method and device based on a smart contract to achieve secure data authorization between data owners and users.

What is the main technical solution?

Technical solution: The blockchain node receives the data acquisition transaction submitted by the data user, executes the data authorization smart contract called by the transaction, obtains the target data after confirming the authorization, and enables it to obtain the data or perform the results after the preset operation.

How to handle the privacy of the data during the data authorization process?

Privacy processing: Determine whether to provide the data directly or provide the operation results based on the privacy level of the data. Data with low privacy level is provided directly, and data with high privacy level performs preset operations and provides results.

How does the data authorization smart contract manage authorization?

Authorization management: The data authorization smart contract contains a list of authorized parties, and manages authorization by confirming whether the data user is on the list. The data user can temporarily request authorization, and the data owner authorizes through the authorization confirmation transaction.

What role do blockchain and smart contracts play in the invention?

Blockchain role: Provide a decentralized or partially decentralized data authorization environment, supporting multiple types such as public chains, private chains, and consortium chains.

Smart contract role: A contract created and executed on the blockchain, which defines logic through code to realize an automated data authorization process.

What are the implementation methods of devices and equipment?

Device implementation: Including receiving units, execution units, data encryption units, etc., to realize the specific functions of data authorization.

Equipment implementation: At the hardware level, the functions of the device are realized through components such as processors and internal memory; at the software level, the method flow is realized by executing executable instructions.

What does the patent scope include?