pub unsafe extern "C" fn symmetric_signal_protocol_parameters_create(
parameters: *mut *mut symmetric_signal_protocol_parameters,
our_identity_key: *mut ratchet_identity_key_pair,
our_base_key: *mut ec_key_pair,
our_ratchet_key: *mut ec_key_pair,
their_base_key: *mut ec_public_key,
their_ratchet_key: *mut ec_public_key,
their_identity_key: *mut ec_public_key,
) -> c_int