No, sorry, I haven’t uploaded anything yet, I’ve only coded the protocols and some benchmark code. The idea is for each client to send and receive data continuously. Since text messages are pretty small and YPIR+SP doesn’t have a lot of overhead, that could be a reasonable way to conceal all metadata, as long as there are not enough people connected to overwhelm the server.

Sorry! I meant Private Information Retrieval, that could allow metadata-hiding messaging.

I guess we could make one using newer FHE-RAM techniques and some edge case handling.

Relevant context