I can't be bothered to do a real solution

Assets/Scripts/SensitiveInfo.cs

@@ -2,6 +2,7 @@ using System;
 using System.IO;
 using System.Security.Cryptography;
 using System.Text;
+using UnityEngine;
 
 public class SensitiveInfo
 {
@@ -30,6 +31,8 @@ public class SensitiveInfo
     }
 
     public static string Decrypt(string dataB64, string key)
+    {
+        try
         {
             var data = Convert.FromBase64String(dataB64);
             using Aes aes = Aes.Create();
@@ -47,4 +50,10 @@ public class SensitiveInfo
 
             return reader.ReadToEnd();
         }
+        catch
+        {
+            Application.Quit();
+            return null;
+        }
+    }
 }