Block chain authority management method and system

Abstract

The invention discloses a block chain authority management method and system. The method comprises the following steps of identifying an authority change transaction sent by a user, wherein the content of the authority change transaction comprises an initiator, an authority change user, authorities which need to be changed and corresponding change authority values; judging whether the initiator inthe authority change transaction has an authority change authority or not; if the initiator has the authority change authority, modifying an authority value of each authority which needs to be changed of the authority change user into the corresponding authority change value, and recording the executed authority change transaction into a block; and carrying out consensus on the transaction in theblock, and when the consensus passes, making the corresponding authority change transaction in the block take effect. According to the method, the authority management is directly carried out in a block chain without an external facility, and is deeply integrated into the block chain, so that all-directional permission control can be carried out on the block chain, and the authority change needsto pass through the consensus of the whole network and is recorded in the block chain, and thus the change records cannot be tampered and are convenient for auditing.

Description

technical field [0001] The present invention relates to the technical field of block chains, in particular to a block chain rights management method and system. Background technique [0002] The blockchain establishes a corresponding digital identity for each participant through cryptography. The digital identity of each participant consists of a pair of asymmetric public-private key pairs, where the public key can be generated through the private key. Participants use the private key to sign the information and send it to the blockchain. The blockchain recovers the public key based on the signature, and identifies the participant based on the public key (or its abstract), and further authenticates the participant's operation. [0003] When the public blockchain processes the information provided by the participants, it needs to consume a certain fee, which is usually a token in the blockchain. Information can only be entered into the blockchain if the participant has a su...

AI Technical Summary

Problems solved by technology

The permission information and authentication logic in this scheme are all implemented at the smart contract level, so it is impossible to control the permissions below the smart contract level (such as sending transactions, obtaining blockchain status, etc.)

Applying this kind of scheme needs to bear risks such as transaction flood attack (recording a large number of useless transactions in the blockchain)

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