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Privacy-protecting intelligent contract model and implementation method thereof

A smart contract, privacy protection technology, applied in the field of privacy protection smart contract model, can solve problems such as the inability to guarantee data privacy

Active Publication Date: 2021-09-14
FUJIAN NORMAL UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

On the other hand, if the output of the transaction is directly stored in the blockchain in the form of plain text, although the forgery and tampering of the data can be prevented, the privacy of the data cannot be guaranteed.

Method used

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  • Privacy-protecting intelligent contract model and implementation method thereof
  • Privacy-protecting intelligent contract model and implementation method thereof
  • Privacy-protecting intelligent contract model and implementation method thereof

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Embodiment Construction

[0021] For purposes of this application, technical solutions, and advantages of the embodiments more clearly, the application of the present embodiment in conjunction with the following technical solutions in the embodiments in the accompanying drawings be clearly embodiments of the present application, fully described.

[0022] like figure 1 Or 2, an intelligent model contract privacy, security and multi-party computation block chain binding, was added secure multiparty computation layer hierarchical model the original block chain; and according to the broadcast and point to point communication block chain features and communications characteristics of each participant's secure multi-party computation, the consensus layer and the network layer designed to merge the new communication layer, to implement a multi-party computation based security intelligence to protect the privacy of the contract model, bottom-level model is: communication layer, data layer, secure multi-layer, inte...

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Abstract

According to a privacy-protecting intelligent contract model and the implementation method thereof, the advantages of input privacy, calculation correctness and the like of secure multi-party calculation are utilized, a secure multi-party calculation layer is added on the basis of an original hierarchical model of a block chain, and intelligent contract input is divided into multiple parts of multi-party calculation, so that each node only masters part of input, global data cannot be obtained, and any input and output information of other participants cannot be known, so that the input privacy of the smart contract is ensured. And meanwhile, an asymmetric cryptographic algorithm is utilized to encrypt and sign the output of the smart contract, so that the privacy protection of the output of the smart contract is realized. According to the technical scheme, the traceability of the transaction can be realized according to the signature.

Description

Technical field [0001] The present invention relates to a smart contract privacy protection technology, and particularly relates to a method of protecting the privacy of smart contract model and its implementation method. Background technique [0002] Block chain as a new technology, can not be altered because, to the center, and other characteristics can be traced back in crowdfunding, bidding, auction and other fields are widely used. With the rapid development of technology to block chain Bitcoin represented, block chain technology has begun to gradually enter the era of intelligent programmable contract beyond the era. Intelligent contract as a block chain 2.0 application, is a event-driven code and algorithms contract has the contract status, with the further development block chain technology and widespread concern and research. Its deterministic, real-time, autonomy, observable, verifiable, to the center and other characteristics of digital payment, the disposal of financi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q20/38G06Q40/04G06F21/64
CPCG06Q20/3825G06Q40/04G06F21/64
Inventor 叶阿勇刁一晴
Owner FUJIAN NORMAL UNIV
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