May 13, 2018

Hello Libbitcoin Team! Quick question regarding setting certificate for zmq curve. I can't find any official documentation on the following comment in the protocol::socket object source:

// Use on client for both set_public_key and set_private_key from a cert.
// If CURVE is not required by server, call set_certificate({ null_hash })
// to generate an arbitrary client certificate for a secure socket.

Is the null_hash passed to zmq with ZMQ_CURVE_SECRETKEY/ZMQ_CURVE_PUBLICKEY set to null, and zmq automatically generates a temp pair? If "curve is not required by server", doesn't the client have to also set ZMQ_CURVE_SERVER to true, since the (libbitcoin)server is not the curve server? Couldn't find answers to this case in the zmq docs. Any pointers much appreciated!