Patent ID: 11968297
Assignee: GOOGLE LLC
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. The system of claim 12, the operations further comprising:
delineating, by the client device, interest groups that include the particular user into a first set of interest groups and a second set of interest groups that differs from the first set of interest groups;
transmitting, by the client device, the first encrypted request to the second MPC server, the first encrypted request including a first set of interest groups that include the particular user;
transmitting, by the client device, a second encrypted request to the first MPC server, the second encrypted request including a second set of interest groups that include the particular user;
receiving, by the client device, a second signed response transmitted by the first MPC server;
verifying, by the client device, that the second signed response is signed by the second MPC server;
recovering, by the client device, a specified interest group from the signed response;
verifying, by the client device, that the specified interest group includes the particular user;
verifying, by the client device, that the value of the given key/value pair is signed by the second MPC server; and
decrypting, by the client device, the value of the given key/value pair to recover a third selection criterion, wherein selecting the controlling selection criterion comprises selecting the controlling selection criterion from among the first selection criterion, the given selection criterion, the candidate selection criterion, and the third selection criterion.