Block chain-based information monitoring method, system and device, and storage medium

Abstract

The invention discloses an information monitoring method, system and device based on a block chain, and a storage medium. When a supervision node restores a transaction information fragment according to a tracking key, the supervision node needs to be based on the trap door information of the supervision node and the trap door information provided by other supervision nodes after verification of a local identity at the same time; any single supervision node cannot recover any effective transaction information by using own trap door information, so that a restrictive relationship exists between the supervision nodes, and each supervision node needs to be supported by other supervision nodes to normally recover transaction information fragments, so overall stability and availability of the block chain system are ensured, and meanwhile, the transaction information of the user node is prevented from being stolen by the malicious supervision node, and security of the transaction information of the user is ensured. In addition, the invention further provides a block chain system, equipment and a storage medium, and the beneficial effects are as described above.

Description

technical field [0001] The present invention relates to the field of block chains, in particular to an information monitoring method, system, equipment and storage medium based on block chains. Background technique [0002] At present, blockchains that can achieve privacy protection are mainly represented by Monero and Zerocoin, which often do not have the function of supervising the substance of transaction data. [0003] In the transaction process based on the block chain, the proof of the legality of the transaction amount often needs to be realized by the method of interval proof, that is, the corresponding commitment information and interval proof are generated according to the transaction amount, and the commitment information can only reflect the specified transaction amount. range, but the specific transaction amount cannot be disclosed. The currently widely used interval proof scheme in many privacy-protected blockchain projects is the Bulletproofs interval proof s...

AI Technical Summary

Problems solved by technology

[0004] In actual scenarios, the blockchain with privacy protection may be frequently used by malicious users for illegal transactions such as small transactions and asset transfers, or the amount of user accounts may suddenly change due to system loopholes. However, due to the inability to know the transaction amount , resulting in the inability to determine the existence of an abnormal state, and it is difficult to ensure the overall stability of the blockchain system. In addition, it is also difficult to realize the supervision of transaction content, and it is impossible to ensure the overall availability of the blockchain system. The user transaction amount in the block chain is supervised, and there may also be cases where malicious regulatory nodes leak the user's transaction amount, so it is difficult to ensure the security of user transaction information

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