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Union block chain consensus method

A blockchain and alliance technology, applied in the information field, can solve problems such as lack of credibility and reliability, failure to conform to real scenarios, wrong nodes that cannot be found and eliminated by other nodes, and achieve the effect of improving efficiency and continuous reliability

Active Publication Date: 2018-09-04
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0006] Considering that the current PBFT algorithm is applied to the blockchain, there are generally the following problems: in the consensus process, all nodes are completely equal, there is no distinction between credibility and reliability, and there is no difference in the right to speak of all nodes, which does not conform to the real scene ;Wrong nodes do evil in the consensus stage and cannot be discovered and eliminated by other nodes

Method used

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Embodiment 1

[0046] In the existing blockchain technology, the data in the blockchain is jointly maintained by all blockchain nodes (hereinafter referred to as nodes) in the blockchain network. When a node receives a business request, it generally needs to go through three links of caching, consensus and storage before it can store the business data corresponding to the business request into the block, and upload the block to the corresponding block chain of the node . When most nodes in the blockchain network store the business data in the blockchain data of their respective nodes, the business data can be regarded as being stored in the block data jointly maintained by each node.

[0047] Consensus is an indispensable link. Currently, the consensus mechanisms used include Proof of Work (POW) mechanism, Byzantine Fault Tolerance (PBFT) mechanism, and proof of equity mechanism. Here we take the proof-of-work mechanism as an example to illustrate.

[0048] Specifically, firstly, the node ...

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Abstract

The invention discloses a union block chain consensus method, which is applied to a union block chain of a block chain. The method comprises the steps of building a node reputation model according tobehaviors of nodes in a consensus process based on a classical PBFT algorithm; calculating trust values of the nodes; fusing the trust values as speaking rights of the nodes in the consensus process to a consensus method; and finally forming a consensus method fusing the reputation model. The speaking rights of the nodes are distinguished in the consensus process of the nodes, so that real scene demands are met; and malicious nodes are identified and deleted, so that system continuous reliability is improved and consensus delay is shortened.

Description

technical field [0001] The invention relates to the field of information technology, in particular to a consensus method of a block chain alliance block chain. Background technique [0002] With the development of information technology, blockchain technology has become a technology that people focus on due to its advantages of openness, non-tamperability and decentralization. Blockchain technology uses block chain data structure to verify and store data, uses distributed consensus algorithm to generate and update data, uses cryptography to ensure the security of data transmission and access, and uses smart contracts composed of automated script codes A new distributed infrastructure and distributed computing paradigm for programming and manipulating data. Blockchain can be divided into "public chain", "private chain" and "alliance chain" according to access and management rights. On the public chain, everyone can access and obtain data. The private chain is operated by a...

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Application Information

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IPC IPC(8): G06Q20/38
CPCG06Q20/3829
Inventor 雷凯齐竹云徐丽妹
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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