-void silc_client_config_register_ciphers(SilcClientConfig config);
-void silc_client_config_register_pkcs(SilcClientConfig config);
-void silc_client_config_register_hashfuncs(SilcClientConfig config);
-void silc_client_config_register_hmacs(SilcClientConfig config);
+bool silc_client_config_register_ciphers(SilcClientConfig config);
+bool silc_client_config_register_pkcs(SilcClientConfig config);
+bool silc_client_config_register_hashfuncs(SilcClientConfig config);
+bool silc_client_config_register_hmacs(SilcClientConfig config);