Patent ID: 11874950
Assignee: LEMON INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 6:
7. A membership privacy protection system for secure computation and communication, the system comprising:
a memory to store a first dataset;
a processor to:
provide the first dataset and a second dataset;
determine a number N based on a data privacy configuration;
generate a padding dataset having 2N elements, wherein an intersection of the padding dataset and the first dataset is empty, and an intersection of the padding dataset and the second dataset is empty;
shuffle the padding dataset for the first dataset;
independently shuffle the padding dataset for the second dataset;
up-sample the first dataset with a first N elements of the shuffled padding dataset for the first dataset;
up-sample the second dataset with a first N elements of the shuffled padding dataset for the second dataset;
generate a third dataset based on the up-sampled second dataset;
perform a private set intersection operation based on the up-sampled first dataset and the third dataset,
wherein the number N is determined such that the private set intersection operation is differentially private.