Block chain system, information processing method, system and device, and computer medium

Abstract

The invention discloses a block chain system, an information processing method, system and device, and a computer medium, and is applied to a target block chain node to obtain a first commitment value; obtaining a second commitment value; dividing the first numerical value by the second numerical value to obtain a third numerical value, and calculating the third numerical value to obtain a third commitment value; dividing relation proof information is generated through a zero-knowledge proof method, the first discrete password group information, the second discrete password group information, the first commitment value, the second commitment value and the third commitment value; issuing division relationship proof information to a block chain verification node, so that the block chain verification node verifies whether the third numerical value is a quotient of the first numerical value and the second numerical value based on the division relationship proof information; the discrete password group information comprises discrete password group generation parts and encryption group parts obtained after the discrete password group generation parts and random numbers are operated, and the random numbers are trap doors stored by the corresponding supervision nodes; and the practicability, the safety and the supervision of the privacy protection block chain are improved.

Description

technical field [0001] The present application relates to the technical field of blockchain, and more specifically, to a blockchain system and an information processing method, system, device, and computer medium. Background technique [0002] With the development of communication technology, users have higher requirements for information security and transmission. In this environment, the blockchain has won the trust of users by virtue of its advantages of decentralization, non-tampering and traceability. Pay attention to. Blockchain (Blockchain) is a new application mode of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. It is an important concept of Bitcoin. Blockchain is essentially a decentralized The database, as the underlying technology of Bitcoin, is a series of data blocks associated with cryptographic methods. Each data block contains a batch of Bitcoin network transaction informati...

AI Technical Summary

Problems solved by technology

However, in the application process of the blockchain, in order to better hide the user's private information, such as hiding the user's transaction information in the blockchain, Monero came into being. With the help of Monero, other users can only It is known that a certain user has carried out a transaction, but the specific user information cannot be obtained. For this reason, it is necessary to supervise the user identity and the numerical information transmitted by the user. For example, a supervisory node is preset in the blockchain system, and the supervisory node is used to manage users.

[0003] However, in the application process of the privacy protection blockchain, when the user hides different related information separately, since the privacy protection blockchain cannot know the specific value of the hidden information, thus making the privacy protection blockchain There is no guarantee that the correlation between the hidden information will change. For example, when users conduct cross-border transactions, they may hide information such as quotations, quantities, and total prices, and the quantity is the quotient value of the total price and the quotation, or the salary budget is known. The two privacy data of the total amount and the number of employees are stored on the chain in the form of a privacy commitment. To calculate the average salary, it is necessary to give the calculation and proof method of dividing the private data to find a business. In addition, the blockchain cannot track and supervise users, which reduces the security, supervision and functionality of the privacy protection blockchain

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