add method to Convert Keys To Bytes in converter class

Author: selfmadecode

src/Helpers/Converters.cs

@@ -38,5 +38,10 @@ public static byte[] HexadecimalStringToByteArray(this string input)
             }
             return output;
         }
+
+        public static byte[] ConvertKeysToBytes(this string data)
+        {
+            return Encoding.UTF8.GetBytes(data);
+        }
     }
 }