14. A machine-implemented system, comprising: a machine having memory configured with executable instructions for a request search service that processes on the machine; and the machine or a different machine having memory configured with executable instructions for a process search service that processes on the machine or the different machine; wherein the request search service encrypts a search of a principal using a search service public key and encrypts search return instructions for delivering search results associated with the search service processing the search with a search return process public key, and wherein the encrypted search and search return instructions are delivered to the process search service, and wherein the process search service delivers the encrypted search to the search service along with a first public key for the principal and delivers the encrypted search return instructions to the search return process along with a second public key of the principal, and wherein the search is processed and the search results are encrypted by the search service using the first public key and delivered to the search return process, and the search return process encrypts the search results again with the second public key and then delivers the encrypted search results to the principal, and wherein a true identity of the principal is masked for the search processing.
14. A machine-implemented system, comprising: a machine having memory configured with executable instructions for a request search service that processes on the machine; and the machine or a different machine having memory configured with executable instructions for a process search service that processes on the machine or the different machine; wherein the request search service encrypts a search of a principal using a search service public key and encrypts search return instructions for delivering search results associated with the search service processing the search with a search return process public key, and wherein the encrypted search and search return instructions are delivered to the process search service, and wherein the process search service delivers the encrypted search to the search service along with a first public key for the principal and delivers the encrypted search return instructions to the search return process along with a second public key of the principal, and wherein the search is processed and the search results are encrypted by the search service using the first public key and delivered to the search return process, and the search return process encrypts the search results again with the second public key and then delivers the encrypted search results to the principal, and wherein a true identity of the principal is masked for the search processing. 17. The machine-implemented system of claim 14 further comprising, the machine or the different machine having additional executable instructions for a receive result's service that processes on the machine or the different machine, and wherein the receive result's service receives the encrypted search results from the search return process on behalf of the principal and decrypts using multiple private keys associated with the principal to deliver the search results in accordance with the search return instructions.