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On-chain and off-chain data sharing method based on distributed oracles and homomorphic encryption

A technology of homomorphic encryption and data sharing, applied in the field of blockchain, it can solve the problems of poor data timeliness and inability to obtain data, and achieve the effects of good versatility, improved timeliness, and improved processing performance.

Active Publication Date: 2022-04-08
东北大学秦皇岛分校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to occupy a large amount of data space and network bandwidth to pre-uplink the data. At the same time, the timeliness of the data is poor, and data users cannot obtain the data that has not been uploaded in time.

Method used

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  • On-chain and off-chain data sharing method based on distributed oracles and homomorphic encryption
  • On-chain and off-chain data sharing method based on distributed oracles and homomorphic encryption
  • On-chain and off-chain data sharing method based on distributed oracles and homomorphic encryption

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Embodiment

[0059] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described implementation Examples are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0060] The on-chain and off-chain data sharing method based on distributed oracle and homomorphic encryption provided by the present invention includes four types of entities: data user, blockchain, oracle node, and data provider. Among them, the blockchain deployment system management contract , oracle contract, data stora...

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Abstract

The invention belongs to the technical field of block chain, and specifically relates to an on-chain and off-chain data sharing method based on distributed oracle and homomorphic encryption. The method includes four types of entities: data user, block chain, oracle node, and data provider , where the blockchain deployment system management contract, oracle contract, data storage contract, data request contract and user-defined contract; the oracle node includes: request adaptation node, response adaptation node, request execution node; this method uses The distributed oracle realizes the collaborative sharing of on-chain and off-chain data, reduces network bandwidth and on-chain storage space requirements, and can verify data integrity through on-chain storage; this method uses homomorphic encryption to protect the oracle processing process. The data privacy and basic off-chain computing capabilities have better versatility and verifiable security. At the same time, the data aggregation operation is set off the chain, which improves the processing performance compared to the on-chain aggregation.

Description

technical field [0001] The invention relates to the technical field of block chains, in particular to an on-chain and off-chain data sharing method based on distributed oracle machines and homomorphic encryption. Background technique [0002] With the help of distributed technology and cryptography technology, blockchain technology realizes the trusted storage of data in an incompletely trusted environment. It has the characteristics of decentralized architecture, full traceability of data, non-tampering and non-repudiation, and is regarded as the information Internet. Key technologies for the transition to the Internet of Value. The first generation of blockchain technology started with Bitcoin, mainly as a distributed ledger. The representative of the second-generation blockchain technology is Ethereum, which focuses on expanding data storage and computing forms through smart contract technology, forming a new distributed computing paradigm. The third-generation blockcha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/60G06F21/62G06F21/64H04L9/00H04L9/40H04L67/025H04L67/1097
CPCG06F21/602G06F21/6245G06F21/64H04L9/008H04L63/123H04L63/0442H04L63/105H04L67/025H04L67/1097G06F2221/2141G06F2221/2117
Inventor 史闻博徐欣张永欣鲁宁
Owner 东北大学秦皇岛分校
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