公开(公告)号：US11809588B1

公开(公告)日：2023-11-07

申请号：US18297389

申请日：2023-04-07

Applicant: Lemon Inc.

Inventor： Bo Jiang ,  Jian Du ,  Haohao Qian ,  Qiang Yan

IPC: G06F21/62 ,  G06F16/2455

CPC classification number: G06F21/6218 ,  G06F16/2456 ,  G06F16/24556

Abstract: Methods and systems for protecting membership privacy in multi-identification secure computation and communication are provided. The method includes providing a dataset having a first set of membership identifications and a second set of membership identifications, determining a number N based on a data privacy configuration, generating and shuffling a first padding dataset, and up-sampling the first set of membership identifications with a first N elements of the shuffled first padding dataset. The method also includes inserting a first N random membership-identification elements to the second set of membership identifications, generating and shuffling a second padding dataset, up-sampling the inserted second set of membership identifications with a first N elements of the shuffled second padding dataset. The method further includes performing an intersection operation based on the up-sampled dataset and a received dataset.