Transaction deletion method and system under user balance privacy protection and authorization supervision

Abstract

The invention provides a transaction deletion method and a system under user balance privacy protection and authorization supervision, which are suitable for an alliance chain. The method comprises the following steps: an initialization step of participating in each party: defining role classification and functions of member nodes, generating public and private keys of the member nodes, and generating supervision parameters of an authorization supervisor; and an account transfer initiating step: enabling a common user to initiate an account transfer transaction, and sending account transfer transaction information to the accounting node, the authorization supervisor and the account transfer receiver. According to the invention, an authorization supervisor can revise malicious information on a block chain without influencing link information of an existing block chain; according to the scheme of the invention, the chameleon hash function and the traditional password hash function are used at the same time, and the collision algorithm of the chameleon hash function is used, so that an authorized supervisor can revise the block carrying malicious information and keep the original hashvalue of the revised block unchanged, and the correctness of the effective block is not influenced.

Description

technical field [0001] The present invention relates to the technical field of blockchain, in particular, to a method and system for user balance privacy protection and transaction deletion under authorized supervision. In particular, it involves a user balance privacy protection and transaction deletion scheme under authorized supervision suitable for alliance chains. Background technique [0002] 1.1 Blockchain and Consortium Chain [0003] 1) Blockchain, essentially a decentralized or multi-centralized, public distributed ledger, is a data block arranged in chronological order. In the blockchain, several transaction records are stored in each block, and the block is generated by using cryptography to ensure that the data in it cannot be tampered with, cannot be forged, and can be verified; the consensus algorithm is used to enable all nodes in the entire network to complete the block block approval. According to the degree of openness of participating bookkeeping nodes...

AI Technical Summary

Problems solved by technology

[0014] as attached figure 1 As shown, the v and r provided by the commitment party must be exactly the same as the v and r generated by cm, that is, the commitment party cannot modify the content v of the commitment during the commitment opening phase

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