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Data processing method and device in multi-party privacy intersection and electronic equipment

A data processing device and multi-party privacy technology, applied in the field of privacy computing, can solve the problem of low efficiency of multi-party privacy seeking

Active Publication Date: 2021-10-08
HUAKONG TSINGJIAO INFORMATION SCI BEIJING LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The embodiment of the present application provides a data processing method, device, and electronic device in multi-party privacy interrogation to solve the problem of low efficiency of multi-party privacy interrogation existing in the prior art

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  • Data processing method and device in multi-party privacy intersection and electronic equipment
  • Data processing method and device in multi-party privacy intersection and electronic equipment
  • Data processing method and device in multi-party privacy intersection and electronic equipment

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Embodiment Construction

[0055] In order to provide an implementation plan for improving the efficiency of multi-party privacy interrogation, the embodiment of this application provides a data processing method, device and electronic equipment in multi-party privacy interrogation. The preferred embodiments of this application will be described below in conjunction with the accompanying drawings It should be understood that the preferred embodiments described here are only used to illustrate and explain the present application, and are not used to limit the present application. And in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0056] The embodiment of the present application provides a data processing method in multi-party privacy interrogation, which is applied to the receiver device. The receiver device has multiple keywords, the number of the multiple keywords is m, and the m keywords are used as cuckoo T...

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Abstract

The invention discloses a data processing method in multi-party privacy intersection, which is applied to a receiver device. M keywords of the receiver device are mapped to a hash table with the size of L by adopting cuckoo hash. The method comprises the following steps: receiving L groups of calculation data sent by a sender device for the m keywords; using m groups of calculation data in the L groups of calculation data to respectively correspond to each keyword in the hash table, and calculating an OPPRF result corresponding to the keyword; for each OPPRF result in the m OPPRF results, taking the serial number of the keyword corresponding to the OPPRF result as a packet header, and combining the packet header with the OPPRF result to form a processed result; sorting the obtained m processed results according to packet headers, and storing the m processed results in a result file according to a sequence; and sequentially obtaining each processed result from the result file according to a sequence, and carrying out data fusion on the OPPRF result contained in the processed result and the corresponding local pseudo-random number. By adopting the scheme, the multi-party privacy intersection efficiency is improved.

Description

technical field [0001] The present application relates to the technical field of privacy computing, and in particular to a data processing method, device and electronic equipment in multi-party privacy seeking. Background technique [0002] Multi-Party Private Set Intersection (M-PSI) means that multiple parties each have a data set, and the intersection of all data sets is obtained through interaction between multiple parties, and one of the participants obtains , and each participant cannot know the data in the data collection of other participants. [0003] For example, a client and multiple servers each have a data set. Between the client and the multiple servers, it is desired to find the intersection of multiple data sets at all ends, and the final intersection result is obtained by the client. During the execution of the protocol, each server cannot derive the set data information of any other participant, and the client can only obtain the intersection result of mul...

Claims

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Application Information

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IPC IPC(8): H04L9/06
CPCH04L9/0662H04L2209/46
Inventor 徐葳贾晓丰李浥东黄熹之李艺
Owner HUAKONG TSINGJIAO INFORMATION SCI BEIJING LTD
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