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Data sharing and privacy protection method based on block chain

A data sharing and privacy protection technology, applied in the field of information security, can solve problems such as storage capacity limitations, achieve the effect of lowering the threshold of use, enriching data types and application types, and optimizing consensus algorithms

Active Publication Date: 2021-04-06
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many technical bottlenecks in the current blockchain technology. It is necessary to rationally design the blockchain nodes, realize a multi-level user structure, and allow users of different levels to use the tasks that their hardware devices can undertake. The throughput of the chain reaches the level we want
In addition, considering that the storage capacity of hardware devices used by users in the blockchain network has certain limitations, while traditional blockchains often need to synchronize all data on the chain

Method used

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  • Data sharing and privacy protection method based on block chain
  • Data sharing and privacy protection method based on block chain

Examples

Experimental program
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Embodiment Construction

[0020] Such as figure 1 As shown, this embodiment relates to a blockchain node organization structure, wherein: node organization as a participant basic unit includes: 1 communication node and 4 consensus nodes, of which there is only 1 at the same time Consensus nodes are elected to generate the master node.

[0021] The election specifically refers to: in each node organization, after each master node stops serving or participates in n times of consensus service expiration, the node organization will re-elect the master node. Wherein, n can be preset depending on the number of nodes in the node organization. If the master node service expires, the master node will actively initiate a vote; if the master node service stops unexpectedly, the ordering node will initiate a vote to other nodes in the node organization. At the same time, each node has its own address (private key), and members in the node organization will jointly maintain an ordered list of all node addresses i...

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PUM

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Abstract

The invention discloses a data sharing and privacy protection method based on a blockchain, and the method comprises the steps: building a plurality of blockchains in the same blockchain system, setting the same node, and maintaining at least one blockchain at the same time, thereby enabling different upper-layer applications with the bottom layer of the same blockchain to share the data on the chain; and recording all on-chain data calling records in the block chain, so that real privacy information is protected while data sharing is realized. A block chain system with a multi-node organization, various nodes, a multi-chain structure and a composite consensus mechanism is constructed and used for supporting upper-layer application development. Data reading and writing permission of users and applications is controlled through a double-layer consensus mechanism, and user data security is guaranteed while data sharing is achieved.

Description

technical field [0001] The present invention relates to a technology in the field of information security, in particular to a blockchain-based data sharing and privacy protection method. Background technique [0002] Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. However, there are still many technical bottlenecks in the current blockchain technology. It is necessary to rationally design the blockchain nodes, realize a multi-level user structure, and allow users of different levels to use the tasks that their hardware devices can undertake. The throughput of the chain reaches the level we want. In addition, considering that the storage capacity of hardware devices used by users in the blockchain network has certain limitations, traditional blockchains often need to synchronize all data on the chain. As time goes by, the size of the blockchain will b...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/08H04L9/32
CPCH04L63/0428H04L63/083H04L67/10H04L63/0442H04L9/3236H04L9/3297H04L9/3247H04L9/50
Inventor 沈耀尹猛
Owner SHANGHAI JIAO TONG UNIV
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