[TomcatEsq]

Does this maintain query privacy?

[geekbeast]

Yes, but there are some limitations when doing server side sharing of documents without a central trusted authority.

It's dangerous to accept shares from untrusted sources as it exposes you to attacks by malicious servers colluding or impersonating a user.

Without using Oblivious RAM you risk losing query privacy, when indexing documents that consist of one word repeated many times.