diff --git a/application/core/DB_Model.php b/application/core/DB_Model.php
index 97e94c4c2..79040dc66 100644
--- a/application/core/DB_Model.php
+++ b/application/core/DB_Model.php
@@ -909,6 +909,9 @@ class DB_Model extends CI_Model
 	 */
 	private function _addEncrypt($encryptedColumns, &$data)
 	{
+		// If encryptedColumns is not defined then exit
+		if (isEmptyArray($encryptedColumns)) return;
+
 		$tmpData = array(); // Temporary array used to copy not encrypted columns
 
 		// For each column that is going to be inserted/updated
diff --git a/application/core/IEncryption.php b/application/core/IEncryption.php
new file mode 100644
index 000000000..6b9132c23
--- /dev/null
+++ b/application/core/IEncryption.php
@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * Copyright (C) 2023 fhcomplete.org
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+interface IEncryption
+{
+	public function getEncryptedColumns(): array;
+}
+