dbglog( "Using our private key '%s' in engine", pkey_identifier );
pkey = ENGINE_load_private_key(pkey_engine, pkey_identifier, transfer_pin, &cb_data);
dbglog( "Using our private key '%s' in engine", pkey_identifier );
pkey = ENGINE_load_private_key(pkey_engine, pkey_identifier, transfer_pin, &cb_data);