diff --git a/program/src/cert_session.cpp b/program/src/cert_session.cpp
index d25ad45..cfd7645 100644
--- a/program/src/cert_session.cpp
+++ b/program/src/cert_session.cpp
@@ -1101,9 +1101,7 @@ finish:
 static struct pxy_obj_keyring* get_obj_for_id(int keyring_id)
 {
 	struct pxy_obj_keyring *pxy_obj=NULL;
-	char cfg_id_str[16] = {0};
-	snprintf(cfg_id_str, sizeof(cfg_id_str), "%d", keyring_id);
-	pxy_obj = (struct pxy_obj_keyring*)maat_plugin_table_get_ex_data(g_cert_store->instance, g_cert_store->table_id, cfg_id_str);
+	pxy_obj = (struct pxy_obj_keyring*)maat_plugin_table_get_ex_data(g_cert_store->instance, g_cert_store->table_id, (const char *)&keyring_id, sizeof(int));
 	return pxy_obj;
 }
 
diff --git a/resource/conf/table_info.conf b/resource/conf/table_info.conf
index 2958a56..337260b 100644
--- a/resource/conf/table_info.conf
+++ b/resource/conf/table_info.conf
@@ -6,8 +6,9 @@
         "valid_column":12,
         "custom": {
             "key":1,
-			"key_type":"pointer",
-            "foreign": [4,5]
+			"key_type":"integer",
+			"key_len":4,
+            "foreign":[4,5]
         }
     }
 ]
\ No newline at end of file