| 摘要 |
<p>A system and a method of querying a remote service (14) without revealing a private document to the remote service are provided. The method includes receiving a signature of a user's private document, and querying an intermediate database (28) with the signature of the private document to generate an intermediate result set (58) comprising intermediate database documents, based on a computation of similarity of the signatures of the intermediate database documents to the signature of the private document. The remote service (14) is queried, based on the intermediate result set (58) and a final result set (76) is received from the remote service based on the query, which can be output to the user or further processed.</p> |
