Multi-party security computing method and system and device for multi-party security computing

A computing system and computing method technology, applied in the computer field, can solve the problems affecting the calculation efficiency of multi-party security computing, excessive communication volume, etc., and achieve the effect of reducing communication volume and reducing time consumption

Active Publication Date: 2022-05-06
HUAKONG TSINGJIAO INFORMATION SCI BEIJING LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present technology allows multiple parties (Alice) to share data without having them send their own messages or wait until they have all worked together before sending new ones. This helps save network resources while still being able to collaborate quickly.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the security and speed at calculating multiple parties' shares over shared secrets without compromising their privacy or performance.

Method used

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  • Multi-party security computing method and system and device for multi-party security computing
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  • Multi-party security computing method and system and device for multi-party security computing

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Embodiment Construction

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0047] method embodiment

[0048] The multi-party secure computing method provided by the embodiment of the present invention can be applied to a multi-party secure computing system, which is a computing system that protects data privacy and security. Under the premise of not disclosing their own data, multiple participants can use multi-party secure computing technology to perform collaborative calculations to obtain calculation results. The data part...

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Abstract

The embodiment of the invention provides a multi-party security computing method, a multi-party security computing system and a device for multi-party security computing. According to the multi-party security computing method provided by the embodiment of the invention, when the product of a first secret X and a second secret Y is computed based on a 2-4 secret sharing protocol, all computing nodes only need to be communicated for four times, namely, first-round communication, interaction between a computing node S1 and a computing node Sb, and total two times of communication; and in the second round of communication, the computing node S1 sends the third result fragments to the computing node Sa, the computing node S2 sends the third result fragments to the computing node Sb, and communication is carried out for two times. Compared with the processing process of calculating the product of the first secret X and the second secret Y based on a 2-4 secret sharing protocol in the prior art, the embodiment of the invention has the advantages that the communication traffic among the computing nodes is reduced, so that the time consumption of multi-party security computing can be reduced.

Description

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Claims

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Application Information

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OwnerHUAKONG TSINGJIAO INFORMATION SCI BEIJING LTD