Module message 

Functions

build_message

Build plaintext message, including pubkeys (for replies). TODO: only sources need to attach their pubkeys (for replies), but for toy purposes, everyone builds a Plaintext message the same way

decrypt

decrypt_with_sender

Decrypt like decrypt, additionally returning the sender’s long-term SD-APKE public key pk_S^APKE recovered from ct^PKE.

encrypt

Encrypt a message from a sender to a recipient (step 6).