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Multi-party security computing method and device

A computing method and security technology, applied in the field of electronic information, can solve problems such as low computing efficiency

Active Publication Date: 2021-06-08
ALIPAY (HANGZHOU) INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In related technologies, regardless of the number of data owners who provide raw data, the data owners will act as calculation participants to perform multi-party security calculations. This method has low calculation efficiency

Method used

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  • Multi-party security computing method and device

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Embodiment Construction

[0040] The solutions provided in this specification will be described below in conjunction with the accompanying drawings.

[0041] In related technologies, when the number of data owners for multi-party secure computing is different, the basic algorithms for multi-party secure computing will be different, and the corresponding computing efficiency will also be different when using different basic algorithms for multi-party secure computing. After the number N of data owners who need to perform multi-party security calculations is determined, the basic algorithm for N-party security calculations that needs to be used can be determined according to the number N of data owners, and the basic algorithm for N-party security calculations can be used for N N-party security calculations are performed on the original data of each data owner. Since the number N of data owners is fixed, the corresponding basic algorithm is also determined. If the basic algorithm corresponding to the nu...

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Abstract

The embodiment of the invention provides a multi-party security computing method and device. According to the method of the embodiment, firstly, adding a TEE node cluster comprising K TEE nodes according to the number N of data owners; then, creating a trusted execution environment in the TEE node, and loading a basic algorithm for performing K-party security calculation into the trusted execution environment; then, obtaining at least one data fragment in the trusted execution environment; and finally, performing K-party security calculation by using a basic algorithm of K-party security calculation and the obtained data fragments.

Description

technical field [0001] One or more embodiments of this specification relate to electronic information technology, and in particular to a multi-party secure computing method and device. Background technique [0002] Multi-party secure computing can provide their own original data without revealing the original data of each data owner, perform calculations according to the agreed basic algorithm, and send the final result of the calculation to the data demander. [0003] In related technologies, regardless of the number of data owners who provide raw data, the data owners act as calculation participants to perform multi-party security calculations, and this method has low calculation efficiency. Therefore, it is desirable to provide a multi-party secure computing solution with higher computing efficiency. Contents of the invention [0004] One or more embodiments of this specification describe a multi-party secure computing method and device, so as to improve the computing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/53G06F21/62G06F21/60
CPCG06F21/53G06F21/6218G06F21/602H04L9/3263H04L2209/46
Inventor 韦韬张煜龙段然张振飞
Owner ALIPAY (HANGZHOU) INFORMATION TECH CO LTD