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Automatic bargaining method based on smart contract and multi-party security calculation and related device

A smart contract and price negotiation technology, applied in the field of information security, can solve the problem of lack of protection of the data privacy of both parties in the negotiation, and achieve the effect of preventing leakage, avoiding losses, and solving data privacy.

Active Publication Date: 2020-06-30
GUANGDONG UNIV OF TECH
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Problems solved by technology

[0005] This application provides an automatic bargaining method and related devices based on smart contracts and multi-party secure calculations, which are used to solve the technical problem of lack of protection of data privacy of both bargaining parties in existing bargaining methods

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  • Automatic bargaining method based on smart contract and multi-party security calculation and related device
  • Automatic bargaining method based on smart contract and multi-party security calculation and related device
  • Automatic bargaining method based on smart contract and multi-party security calculation and related device

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Embodiment Construction

[0048] In order to enable those skilled in the art to better understand the solutions of the application, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only It is a part of the embodiments of this application, but not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

[0049] For ease of understanding, please refer to figure 1 , An embodiment of an automatic bargaining method based on smart contracts and multi-party secure calculations provided in this application includes:

[0050] Step 101: Generate a first public key and a first private key based on the homomorphic encryption algorithm in the smart contract.

[0051] It should be noted that a smart...

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Abstract

The invention discloses an automatic bargaining method for intelligent contracts and multi-party security calculation and a related device. The method comprises the steps: generating a first public key and a first private key based on a homomorphic encryption algorithm in a smart contract, and sending the first public key to a demander and a supplier, so the demander and the supplier encrypt the purchase price and the sale price through the first public key respectively; receiving a second public key and an encrypted purchase price sent by the demand side and a third public key and an encrypted sale price sent by the supply side; decrypting the encrypted selling price and the encrypted purchasing price which meet the preset transaction conditions; determining price based on a preset pricing strategy of the smart contract; encrypting the price through the second public key and the third public key to obtain the first encrypted pricing and the second encrypted price, and then sending thefirst encrypted price and the second encrypted price to the demander and the supplier respectively, so that the demander and the supplier decrypt correspondingly to obtain the price, and the technical problem that an existing bargaining method lacks protection of data privacy of two bargaining parties is solved.

Description

Technical field [0001] This application relates to the field of information security technology, in particular to an automatic bargaining method and related devices based on smart contracts and multi-party secure calculations. Background technique [0002] The relationship between the demand side and the supplier in the supply chain is usually divided into two categories. One is the demand side dominated, that is, when the supplier is in a low value-added industry, multiple suppliers provide services to one demand side. The threshold is low and the competition is fierce; the second is supplier-led, that is, the supplier has core technology to provide services to the demander, and the demander relies on its technology and cannot find suitable substitutes, such as the chip industry. [0003] Take the traditional low value-added industries as an example. Under normal circumstances, the demand side is in a dominant position and the supplier is in a passive position. Therefore, in the p...

Claims

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Application Information

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IPC IPC(8): G06Q30/06G06F21/60
CPCG06Q30/0611G06F21/602H04L9/008H04L9/3239H04L2209/56H04L2209/46G06Q30/08G06Q20/02G06Q2220/00G06Q20/3829G06Q20/38215H04L63/0407H04L63/0442H04L9/50G06Q20/382H04L9/0825H04L9/14H04L2209/466
Inventor 冷杰武张虎景建波叶仕德阮国磊
Owner GUANGDONG UNIV OF TECH
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