Retrieve from database other then .bin files

[marab2]

Hi Guys,

I am building a Live Caller ID feature for my iOS app and want to avoid using large local binary files (Call Directory Extension).

My plan is to store the caller data (names and numbers) in my backend database in an encrypted format using Swift Homomorphic Encryption. Is it possible to run a query against these encrypted records? I need the server to be able to match the encrypted client query to the encrypted database row without ever decrypting the data or seeing the raw phone number.

[karulont]

Hi,

The Live Caller ID feature only works with Private Information Retrieval(PIR).
In the PIR schemes supported in Swift Homomorphic Encryption the server "database" is not encrypted. The client can make encrypted queries to the server to fetch data associated with the phone number, without the server learning which row was queried.

Large binary files: especially the ".bin" files that are the result of preprocessing are needed on the server side. They contain the database encoded in a way such that it is quick to compute responses to encrypted queries.