System, method, and computer program product for conducting private set intersection (PSI) techniques with multiple parties using a data repository

A system, comprising:

• a data repository hosting system comprising at least one processor programmed or configured to:
• generate a data repository;
• receive, from a submission entity system associated with a submission entity, a private set intersection (PSI) data query, wherein the PSI data query comprises a match parameter for performing the PSI data query on the data repository;
• transmit, to the submission entity system, a data classification encryption key, wherein the data classification encryption key is associated with a data field that corresponds to a match parameter data field of the match parameter;
• determine whether to authorize the PSI data query on the data repository;
• transmit, to the submission entity system, a data authorization encryption key based on determining to authorize the PSI data query on the data repository;
• and
• perform the PSI data query on the data repository.

A computer program product comprising at least one non-transitory computer-readable medium including one or more instructions that, when executed by at least one processor, cause the at least one processor to:

• generate a data repository;
• receive a private set intersection (PSI) data query, wherein the PSI data query comprises a match parameter for performing the PSI data query on the data repository;
• transmit a data classification encryption key, wherein the data classification encryption key is associated with a data field that corresponds to a match parameter data field of the match parameter;
• determine whether to authorize the PSI data query on the data repository;
• transmit a data authorization encryption key based on determining to authorize the PSI data query on the data repository;
• and
• perform the PSI data query on the data repository.