adding missing file

src/Model/Validation/GenericValidation.php

@@ -0,0 +1,35 @@
+<?php
+
+/* 
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+namespace App\Model\Validation;
+
+class GenericValidation 
+{ 
+  public static function hexKey64($value, array $context) {
+    if(strlen($value) != 64) return false;
+    if(preg_match('/^[[:xdigit:]]*$/', $value)) {
+      return true;
+    }
+    return false;
+  }
+  
+  public static function alphaNumeric($value, array $context) {
+    //if(preg_match('/^[a-zA-Z0-9äöüÄÖÜß _;:()-]\n\r*$/', $value)) {
+    if(preg_match('/([<>]|&gt;|&lt;|javascript:){1,}/', $value)) {
+      return false;
+    }
+    return true;
+  }
+  
+  public static function email($value, array $context) {
+    if(preg_match('/^[a-zA-Z0-9.!#$%&’*+\/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$/', $value)) {
+      return true;
+    }
+    return false;
+  }
+}