A blockchain-based data encryption protection method and system

Abstract

The present application provides a method and system for data encryption and protection based on blockchain, the method includes: in response to a request signal from a data upload terminal to store the data to be encrypted in the blockchain, obtaining security assessment feature data of the data upload terminal; The security assessment feature data of the data upload terminal is calculated, and the security and reliability value of the data upload terminal is calculated; the size of the security and reliability value and the preset first threshold value are compared, and if the security and reliability value is greater than the preset first threshold value, the data upload terminal to be encrypted Upload the data to the encryption node of the blockchain, and encrypt the data to be encrypted; otherwise, it is forbidden to upload the data to be encrypted in the data upload terminal to the blockchain; upload the encrypted ciphertext to the storage of the blockchain node. This application prevents data uploading terminals with low security and reliability from encrypting and storing data on the blockchain, preventing storage nodes with abnormal storage performance from storing data or data being stolen by illegal requesting terminals, and improving the security and reliability of data in blockchain storage nodes. .

Description

technical field [0001] The present application relates to the technical field of data processing, and in particular, to a method and system for data encryption and protection based on blockchain. Background technique [0002] Since the emergence of blockchain, its decentralization, immutability, synchronization, and intelligent distributed management are its biggest technical advantages, and its distributed advantages make data tampering impossible. During the authentication and communication process of the device, if the encryption command is fixed, it will cause the remote attack node to obtain the corresponding encryption command, which will reduce the authentication security. The data in it has been illegally stolen. [0003] In addition, in the blockchain, it is inevitable that some abnormal storage nodes will appear, which will lead to abnormal data storage, reduced security and easy to be illegally stolen. [0004] Therefore, how to evaluate the security performance...

AI Technical Summary

Problems solved by technology

[0002] Since the blockchain was born, its decentralization, immutability, synchronization, and intelligent distributed management are its biggest technical advantages. Its distributed advantages make data tampering impossible. During the authentication communication process of the device, if the encryption instruction is fixed, it will cause the remote attack node to obtain the corresponding encryption instruction, which will reduce the authentication security. Data in is illegally stolen

[0003] In addition, in the blockchain, it is inevitable that there will be some abnormal storage nodes, which will lead to abnormal data stored in it, reduced security and easy to be stolen illegally

Images