in src/lib.rs [70:75]
fn generate_keys() -> Result<(Box<dyn LocalKeyPair>, Box<dyn LocalKeyPair>)> {
let cryptographer = crypto::holder::get_cryptographer();
let local_key = cryptographer.generate_ephemeral_keypair()?;
let remote_key = cryptographer.generate_ephemeral_keypair()?;
Ok((local_key, remote_key))
}