High-security quantum multi-party privacy summation method

A multi-party privacy and high security technology, applied in the field of quantum communication security, can solve the problems of insufficient security, high resource consumption, low practicability, etc. Effect

Active Publication Date: 2021-06-01
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems of low practicability, insufficient security and high resource consumption faced by the curren...

Method used

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  • High-security quantum multi-party privacy summation method
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  • High-security quantum multi-party privacy summation method

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Embodiment Construction

[0043] 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 only some, not all, embodiments of the present invention. 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.

[0044] figure 1 It is a schematic flowchart of a high-security quantum multi-party privacy summation method provided by this embodiment, and the complete process of the method proposed by this patent is recorded in the figure. Among them, ①-⑥ correspond to Step1-Step6 in the patent scheme respectively. In the figure above, the solid line represents the ideal quantum channel, the dotted line represents the collaborative calculation between participants, the do...

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Abstract

The invention relates to the technical field of quantum communication security, in particular to a high-security quantum multi-party privacy summation method, which comprises the following steps that: a third party TP constructs a transmission sequence S' according to a coefficient matrix and a single quantum state, and sends the S' to a participant Bob1 through a quantum channel; the Bob1 executes unitary transformation and particle reordering operation on the received transmission sequence S' to obtain a new transmission sequence S1', sending the S1' to the next participant Bob2; after the Bob2 receives the transmission sequence S1', executing the same operation as the Bob1 and transmitting the operation to the next participant, and sequentially transmitting the transmission sequence in the participants until the last participant Bobn executes unitary transformation and particle reordering on the received transmission sequence to obtain a new transmission sequence S'n and transmitting the new transmission sequence S'n back to the TP; and the TP executing eavesdropping detection on the S'n, if the quantum channel has an eavesdropper, restarting the method, otherwise, requesting the participant to calculate the sum of all random numbers, and the TP calculating the summation value of the privacy of the participant. The method has higher security while effectively reducing resource consumption and communication consumption.

Description

technical field [0001] The invention relates to the technical field of quantum communication security, in particular to a high-security quantum multi-party privacy summation method. Background technique [0002] With the continuous expansion of the practical application field of quantum information, quantum cryptography has developed rapidly. As a research branch of quantum cryptography, quantum secure multi-party computing is an emerging research field resulting from the fusion of classical secure multi-party computing and quantum informatics. Quantum-safe multi-party privacy summation is a subfield of quantum-safe multi-party computing, which can be regarded as an extension of classical multi-party privacy summation in the field of quantum mechanics. The main purpose of quantum-safe multi-party privacy summation is to obtain Computes the sum of n participants' secret values. [0003] The existing quantum-secure multi-party privacy summation can be divided into two types ...

Claims

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Application Information

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IPC IPC(8): H04B10/70H04B10/85H04L9/08
CPCH04B10/70H04L9/0852H04B10/85
Inventor 宋秀丽杨帅
Owner CHONGQING UNIV OF POSTS & TELECOMM
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