Transaction privacy protection method, device and system based on block chain system

Abstract

The invention provides a transaction privacy protection method based on a block chain system, a sender, a viewer, a system, computer equipment and a computer readable storage medium, and relates to the technical field of data processing. The method comprises the steps that a sender obtains a plaintext message corresponding to privacy information and a visible party list of the plaintext message, builds a block chain transaction corresponding to the privacy information according to the visible party list, and sends the block chain transaction to a block chain network for consensus; and the visible party acquires the block containing the private information, analyzes the block, acquires the ciphertext message of the private information and the ciphertext list of the visible party, and acquires the plaintext message of the private information according to the ciphertext list of the visible party and the ciphertext message. According to the method, the purpose that the privacy field is only readable to the designated participant is achieved by encrypting the key data needing privacy protection in the transaction, and efficient privacy encryption is achieved through a method of matchingsymmetric encryption and asymmetric encryption.

Description

technical field [0001] The present invention relates to the technical field of data processing, in particular to the processing technology of information in the blockchain system, specifically a transaction privacy protection method based on the blockchain system, the sender, the visible party, and the transaction privacy protection method based on the blockchain system. Transaction privacy protection systems, computer devices, and computer-readable storage media. Background technique [0002] This section is intended to provide a background or context for implementations of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] In the development of blockchain technology, there are various solutions to privacy issues. In public chain blockchain protocols such as Bitcoin and Ethereum, key privacy information is not encrypted in transactions. The main way to achieve privacy is to shield t...

AI Technical Summary

Problems solved by technology

Although the application of this method can ensure privacy and security under the condition of ensuring that the information is transmitted correctly, the message transmission network independent of the bottom layer of the blockchain needs to be set up separately, and the requirements for the development, deployment, and maintenance of the entire system are higher. Cannot be promoted as a general solution

Images