internal void LockObscuredPrefsToDevice(ObscuredPrefs.DeviceLockLevel level)
{
// you can lock saves to the device (so they can't be read on another device)
// there are few different levels of strictness, please see API docs for
// lockToDevice property for additional details
// set to None be default (does not lock to device)
ObscuredPrefs.lockToDevice = level;
}
private void DrawObscuredPrefsPage()
{
GUILayout.Label("ACTk has secure layer for the PlayerPrefs: <color=\"#75C4EB\">ObscuredPrefs</color>. " +
"It protects data from view, detects any cheating attempts, " +
"optionally locks data to the current device and supports additional data types.");
GUILayout.Space(5);
using (new GUILayout.HorizontalScope())
{
GUILayout.Label("<b>Supported types:</b>\n" + GetAllObscuredPrefsDataTypes(), GUILayout.MinWidth(130));
using (new GUILayout.VerticalScope(GUI.skin.box))
{
GUILayout.Label("Below you can try to cheat both regular PlayerPrefs and secure ObscuredPrefs:");
using (new GUILayout.VerticalScope())
{
GUILayout.Label("<color=\"" + RedColor + "\"><b>PlayerPrefs:</b></color>\neasy to cheat, only 3 supported types", centeredStyle);
GUILayout.Space(5);
if (string.IsNullOrEmpty(obscuredPrefsExamples.regularPrefs))
{
obscuredPrefsExamples.LoadRegularPrefs();
}
using (new GUILayout.HorizontalScope())
{
GUILayout.Label(obscuredPrefsExamples.regularPrefs, GUILayout.Width(270));
using (new GUILayout.VerticalScope())
{
using (new GUILayout.HorizontalScope())
{
if (GUILayout.Button("Save"))
{
obscuredPrefsExamples.SaveRegularPrefs();
}
if (GUILayout.Button("Load"))
{
obscuredPrefsExamples.LoadRegularPrefs();
}
}
if (GUILayout.Button("Delete"))
{
obscuredPrefsExamples.DeleteRegularPrefs();
}
}
}
}
GUILayout.Space(5);
using (new GUILayout.VerticalScope())
{
GUILayout.Label("<color=\"" + GreenColor + "\"><b>ObscuredPrefs:</b></color>\nsecure, lot of additional types and extra options", centeredStyle);
GUILayout.Space(5);
if (string.IsNullOrEmpty(obscuredPrefsExamples.obscuredPrefs))
{
obscuredPrefsExamples.LoadObscuredPrefs();
}
using (new GUILayout.HorizontalScope())
{
GUILayout.Label(obscuredPrefsExamples.obscuredPrefs, GUILayout.Width(270));
using (new GUILayout.VerticalScope())
{
using (new GUILayout.HorizontalScope())
{
if (GUILayout.Button("Save"))
{
obscuredPrefsExamples.SaveObscuredPrefs();
}
if (GUILayout.Button("Load"))
{
obscuredPrefsExamples.LoadObscuredPrefs();
}
}
if (GUILayout.Button("Delete"))
{
obscuredPrefsExamples.DeleteObscuredPrefs();
}
using (new GUILayout.HorizontalScope())
{
GUILayout.Label("LockToDevice level");
}
savesLock = (ObscuredPrefs.DeviceLockLevel)GUILayout.SelectionGrid((int)savesLock, Enum.GetNames(typeof(ObscuredPrefs.DeviceLockLevel)), 3);
obscuredPrefsExamples.LockObscuredPrefsToDevice(savesLock);
GUILayout.Space(5);
using (new GUILayout.HorizontalScope())
{
obscuredPrefsExamples.PreservePlayerPrefs = GUILayout.Toggle(obscuredPrefsExamples.PreservePlayerPrefs, "preservePlayerPrefs");
}
using (new GUILayout.HorizontalScope())
{
obscuredPrefsExamples.EmergencyMode = GUILayout.Toggle(obscuredPrefsExamples.EmergencyMode, "emergencyMode");
}
using (new GUILayout.HorizontalScope())
{
obscuredPrefsExamples.ReadForeignSaves = GUILayout.Toggle(obscuredPrefsExamples.ReadForeignSaves, "readForeignSaves");
}
GUILayout.Space(5);
GUILayout.Label("<color=\"" + (obscuredPrefsExamples.savesAlterationDetected ? RedColor : GreenColor) + "\">Saves modification detected: " + obscuredPrefsExamples.savesAlterationDetected + "</color>");
GUILayout.Label("<color=\"" + (obscuredPrefsExamples.foreignSavesDetected ? RedColor : GreenColor) + "\">Foreign saves detected: " + obscuredPrefsExamples.foreignSavesDetected + "</color>");
}
}
}
GUILayout.Space(5);
}
}
}
internal static byte[] DecryptData(string key, string encryptedInput)
{
byte[] array;
try
{
array = Convert.FromBase64String(encryptedInput);
}
catch (Exception)
{
ObscuredPrefs.SavesTampered();
byte[] result = null;
return(result);
}
if (array.Length <= 0)
{
ObscuredPrefs.SavesTampered();
return(null);
}
int num = array.Length;
byte b = array[num - 6];
if (b != 2)
{
ObscuredPrefs.SavesTampered();
return(null);
}
ObscuredPrefs.DeviceLockLevel deviceLockLevel = (ObscuredPrefs.DeviceLockLevel)array[num - 5];
byte[] array2 = new byte[4];
Buffer.BlockCopy(array, num - 4, array2, 0, 4);
uint num2 = (uint)((int)array2[0] | (int)array2[1] << 8 | (int)array2[2] << 16 | (int)array2[3] << 24);
uint num3 = 0u;
int num4;
if (deviceLockLevel != ObscuredPrefs.DeviceLockLevel.None)
{
num4 = num - 11;
if (ObscuredPrefs.lockToDevice != ObscuredPrefs.DeviceLockLevel.None)
{
byte[] array3 = new byte[4];
Buffer.BlockCopy(array, num4, array3, 0, 4);
num3 = (uint)((int)array3[0] | (int)array3[1] << 8 | (int)array3[2] << 16 | (int)array3[3] << 24);
}
}
else
{
num4 = num - 7;
}
byte[] array4 = new byte[num4];
Buffer.BlockCopy(array, 0, array4, 0, num4);
byte[] array5 = ObscuredPrefs.EncryptDecryptBytes(array4, num4, key + ObscuredPrefs.cryptoKey);
uint num5 = xxHash.CalculateHash(array5, num4, 0u);
if (num5 != num2)
{
ObscuredPrefs.SavesTampered();
return(null);
}
if (ObscuredPrefs.lockToDevice == ObscuredPrefs.DeviceLockLevel.Strict && num3 == 0u && !ObscuredPrefs.emergencyMode && !ObscuredPrefs.readForeignSaves)
{
return(null);
}
if (num3 != 0u && !ObscuredPrefs.emergencyMode)
{
uint num6 = ObscuredPrefs.DeviceIdHash;
if (num3 != num6)
{
ObscuredPrefs.PossibleForeignSavesDetected();
if (!ObscuredPrefs.readForeignSaves)
{
return(null);
}
}
}
return(array5);
}
private static byte[] DecryptData(string key, string encryptedInput)
{
byte[] numArray1;
try
{
numArray1 = Convert.FromBase64String(encryptedInput);
}
catch (Exception ex)
{
ObscuredPrefs.SavesTampered();
return((byte[])null);
}
if (numArray1.Length <= 0)
{
ObscuredPrefs.SavesTampered();
return((byte[])null);
}
int length1 = numArray1.Length;
if ((int)numArray1[length1 - 6] != 2)
{
ObscuredPrefs.SavesTampered();
return((byte[])null);
}
ObscuredPrefs.DeviceLockLevel deviceLockLevel = (ObscuredPrefs.DeviceLockLevel)numArray1[length1 - 5];
byte[] numArray2 = new byte[4];
Buffer.BlockCopy((Array)numArray1, length1 - 4, (Array)numArray2, 0, 4);
uint num1 = (uint)((int)numArray2[0] | (int)numArray2[1] << 8 | (int)numArray2[2] << 16 | (int)numArray2[3] << 24);
uint num2 = 0;
int length2;
if (deviceLockLevel != ObscuredPrefs.DeviceLockLevel.None)
{
length2 = length1 - 11;
if (ObscuredPrefs.lockToDevice != ObscuredPrefs.DeviceLockLevel.None)
{
byte[] numArray3 = new byte[4];
Buffer.BlockCopy((Array)numArray1, length2, (Array)numArray3, 0, 4);
num2 = (uint)((int)numArray3[0] | (int)numArray3[1] << 8 | (int)numArray3[2] << 16 | (int)numArray3[3] << 24);
}
}
else
{
length2 = length1 - 7;
}
byte[] bytes = new byte[length2];
Buffer.BlockCopy((Array)numArray1, 0, (Array)bytes, 0, length2);
byte[] buf = ObscuredPrefs.EncryptDecryptBytes(bytes, length2, key + ObscuredPrefs.encryptionKey);
if ((int)xxHash.CalculateHash(buf, length2, 0U) != (int)num1)
{
ObscuredPrefs.SavesTampered();
return((byte[])null);
}
if (ObscuredPrefs.lockToDevice == ObscuredPrefs.DeviceLockLevel.Strict && (int)num2 == 0 && (!ObscuredPrefs.emergencyMode && !ObscuredPrefs.readForeignSaves))
{
return((byte[])null);
}
if ((int)num2 != 0 && !ObscuredPrefs.emergencyMode)
{
uint deviceIdHash = ObscuredPrefs.DeviceIdHash;
if ((int)num2 != (int)deviceIdHash)
{
ObscuredPrefs.PossibleForeignSavesDetected();
if (!ObscuredPrefs.readForeignSaves)
{
return((byte[])null);
}
}
}
return(buf);
}
