Private data intersection acquisition method and device, electronic equipment and storage medium

Abstract

The invention relates to a private data intersection acquisition method and device, electronic equipment and a storage medium, and the method comprises the steps: an initiator and a plurality of participants determine a safety length and a mapping function, and the participants determine a mask; an initiator performs privacy intersection calculation with each participant according to the security length and the mapping function, each participant randomly generates a respective participant random vector, and the initiator obtains a plurality of pieces of first verification information; the plurality of participants obtains a plurality of pieces of second verification information according to the participant random vectors and the masks; and the initiator determines a private data intersection according to the first verification information and the second verification information. The problems of privacy leakage of participants and relatively low data security caused by formation of a multi-party intersection based on pairwise comparison in related technologies are solved, the efficiency and security of a privacy data intersection calculation process are improved, and the data privacy of a user is ensured.

Description

Technical field[0001]The present application relates to the field of federal learning, and in particular, a method, apparatus, electronic device, and storage medium involving privacy data intersection.Background technique[0002]Private Set InterSecion, referred to as PSI) is the most widely used technique in federal learning computing. The privacy intersection of the two parties refers to the two participants each have their own data collection. After the federal calculation, the intersection of both parties can be obtained, but both sides do not know the data outside the other party. Further, multi-privacy intersections refer to multiple participants to obtain common intersections of all participants, but do not expose additional information other than any common intersection.[0003]The application scenario of privacy intersection is very broad, such as blacklist, advertising recommendation, electronic watermark, anonymous fingerprint, anonymous data mining, etc. In the related art, ...

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Problems solved by technology

[0005] The embodiment of the present application provides a privacy data intersection acquisition method, device, electronic device, and storage medium to at least solve the problem of forming a multi-party intersection based on pairwise comparison in related technologies, which will lead to privacy disclosure of participants and low data security. The problem

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