Verifiable service provider performance regarding query response provision

An apparatus, comprising:

• at least one processor;
• and
• a computer readable storage medium having computer readable program code embodied therewith and executable by the at least one processor;
• wherein the computer readable program code comprises code that receives, at a service provider from each of a plurality of data owners each having data accessible to the service provider, a privacy budget, wherein the privacy budget identifies a set of privacy requirements to be employed by the service provider on data of the data owner;
• wherein the computer readable program code comprises code that receives, at the service provider, a query from a client;
• wherein the computer readable program code comprises code that receives, at the service provider from each of at least a subset of the data owners, a response to the query;
• wherein the computer readable program code comprises code that adds, by the service provider, noise to each of the responses, wherein an amount of noise added to each response is based upon the privacy budget of the data owner corresponding to a given response;
• and
• wherein the computer readable program code comprises code that returns, by the service provider to the client, an aggregated response comprising the responses having added noise.

A computer program product, comprising:

• a computer readable storage medium having computer readable program code embodied therewith, the computer readable program code executable by a processor;
• wherein the computer readable program code comprises code that receives, at a service provider from each of a plurality of data owners each having data accessible to the service provider, a privacy budget, wherein the privacy budget identifies a set of privacy requirements to be employed by the service provider on data of the data owner;
• wherein the computer readable program code comprises code that receives, at the service provider, a query from a client;
• wherein the computer readable program code comprises code that receives, at the service provider from each of at least a subset of the data owners, a response to the query;
• wherein the computer readable program code comprises code that adds, by the service provider, noise to each of the responses, wherein an amount of noise added to each response is based upon the privacy budget of the data owner corresponding to a given response;
• and
• wherein the computer readable program code comprises code that returns, by the service provider to the client, an aggregated response comprising the responses having added noise.