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Data processing method, device and data processing device

A data processing and data technology, applied in the computer field, can solve problems such as user life hazards, achieve the effects of reducing computational complexity, saving memory overhead, and improving computational efficiency

Pending Publication Date: 2021-12-10
HUAKONG TSINGJIAO INFORMATION SCI BEIJING LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the data in Matrix A is related to sensitive information such as user identity confidentiality, account security, and personal privacy, once such information is leaked, it will bring serious harm to the user's life

Method used

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  • Data processing method, device and data processing device
  • Data processing method, device and data processing device
  • Data processing method, device and data processing device

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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] refer to figure 1 , which shows a flow chart of the steps of an embodiment of a data processing method of the present invention, the method can be used in a multi-party secure computing system, and the method can specifically include the following steps:

[0049] Step 101. Receive a ciphertext calculation task, the ciphertext calculation task includes least squares estimation, and the least squares estimation is used ...

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Abstract

The embodiment of the invention provides a data processing method, a device and a data processing device. The method comprises the steps that a ciphertext calculation task is received, the ciphertext calculation task comprises least square estimation, and the least square estimation is used for solving a vector x for a specified matrix and vector, so that minxy-Ax2 is obtained; wherein m is greater than or equal to n, and the matrix A is ciphertext data; performing QR decomposition on the matrix A based on a ciphertext to obtain a matrix decomposition result, the matrix decomposition result comprising a matrix and a matrix such that Q is an orthogonal matrix and R is an upper triangular matrix; and performing least square estimation based on the ciphertext by using the matrix decomposition result to obtain a solution of the vector x. According to the embodiment of the invention, the calculation efficiency of least square estimation can be improved on the basis of ensuring the data privacy safety.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a data processing method, device and device for data processing. Background technique [0002] Least squares estimation, refers to the given matrix where m≥n, the vector solve min x ||y-Ax|| 2 , that is, to solve Make the 2-norm of y-Ax (residual) the smallest. [0003] Least squares estimation is widely used in various computing scenarios, such as linear regression, communication signal estimation and other scenarios. However, when the data in matrix A is related to the sensitive information of user identity confidentiality, account security and personal privacy, once such information is leaked, it will bring serious harm to the user's life. Contents of the invention [0004] Embodiments of the present invention provide a data processing method, device and device for data processing, which can improve the calculation efficiency of least square estimation on ...

Claims

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Application Information

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IPC IPC(8): G06F17/16G06F17/18G06F21/60G06F21/62H04L9/08
CPCG06F17/16G06F17/18G06F21/602G06F21/6263H04L9/0861
Inventor 陈智隆王国赛何昊青
Owner HUAKONG TSINGJIAO INFORMATION SCI BEIJING LTD
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