// Create and save hashed pin.
private void onNext() {
char[] inputPin1 = new char[firstPin.getText().length()];
for (int i = 0; i < firstPin.getText().length(); i++)
inputPin1[i] = firstPin.getText().charAt(i);
char[] inputPin2 = new char[confirmPin.getText().length()];
for (int i = 0; i < confirmPin.getText().length(); i++)
inputPin2[i] = confirmPin.getText().charAt(i);
String FILENAME1 = (mAccount.getEmail().toString() + ".pin2").toLowerCase();
if (!Arrays.equals(inputPin1, inputPin2)) {
Toast.makeText(EncryptionPin.this, "PINs to not match!", Toast.LENGTH_SHORT).show();
return;
} else if (inputPin1.length < 4) {
Toast.makeText(EncryptionPin.this, "PIN must be at least 4 characters", Toast.LENGTH_SHORT)
.show();
return;
} else if (pinStatus
.getText()
.equals("PIN is currently disabled and not linked to this account")) {
try {
// save .pin2
String hash = Hash.setHash(mAccount.getEmail().toString(), inputPin1, EncryptionPin.this);
FileOutputStream fos1 = openFileOutput(FILENAME1, Context.MODE_PRIVATE);
fos1.write(hash.getBytes());
fos1.close();
// Alert user that process is completed, then return to settings page.
Toast.makeText(EncryptionPin.this, "Hash saved successfully", Toast.LENGTH_SHORT).show();
// Hide keyboard
((InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE))
.hideSoftInputFromWindow(confirmPin.getWindowToken(), 0);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
Log.v("Fie not found", e.getLocalizedMessage());
} catch (IOException e) {
// TODO Auto-generated catch block
Log.v("IO Exception", e.getLocalizedMessage());
}
redraw();
MessageList.actionHandleFolder(this, mAccount, mAccount.getAutoExpandFolderName());
finish();
} else if (firstPin.getText().toString().equals(confirmPin.getText().toString())
&& pinStatus.getText().equals("PIN is enabled and linked to this account"))
Toast.makeText(
EncryptionPin.this,
"PIN already configured. Remove current pin and create a new one to change.",
Toast.LENGTH_LONG)
.show();
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String accountUuid = getIntent().getStringExtra("account");
mAccount = Preferences.getPreferences(this).getAccount(accountUuid);
setContentView(R.layout.encryption_pin);
this.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
if (savedInstanceState != null && savedInstanceState.containsKey(EXTRA_ACCOUNT)) {
accountUuid = savedInstanceState.getString(EXTRA_ACCOUNT);
mAccount = Preferences.getPreferences(this).getAccount(accountUuid);
}
pinStatus = (TextView) findViewById(R.id.pin_status);
firstPin = (EditText) findViewById(R.id.pin);
firstPin.setInputType(InputType.TYPE_CLASS_PHONE);
firstPin.setTransformationMethod(
android.text.method.PasswordTransformationMethod.getInstance());
confirmPin = (EditText) findViewById(R.id.confirm_pin);
confirmPin.setInputType(InputType.TYPE_CLASS_PHONE);
confirmPin.setTransformationMethod(
android.text.method.PasswordTransformationMethod.getInstance());
nextButton = (Button) findViewById(R.id.next);
nextButton.setOnClickListener(this);
nextButton.setEnabled(true);
deleteButton = (Button) findViewById(R.id.delete_pin);
deleteButton.setOnClickListener(this);
deleteButton.setEnabled(false);
// If pin exists, enable delete button and disable next button
if (Hash.pinExists(this, mAccount.getEmail())) {
nextButton.setEnabled(false);
deleteButton.setEnabled(true);
}
redraw();
}
// Redraw screen once pin delete or create has been performed
private void redraw() {
// Check for pin file
if (Hash.pinExists(this, mAccount.getEmail().toLowerCase())) {
pinStatus.setText("PIN is enabled and linked to this account");
pinStatus.setTextColor(Color.GREEN);
firstPin.setEnabled(false);
firstPin.setFocusable(false);
confirmPin.setEnabled(false);
confirmPin.setFocusable(false);
} else {
pinStatus.setText("PIN is currently disabled and not linked to this account");
pinStatus.setTextColor(Color.RED);
firstPin.setEnabled(true);
firstPin.setFocusable(true);
firstPin.setText("");
firstPin.setFocusableInTouchMode(true);
confirmPin.setEnabled(true);
confirmPin.setFocusable(true);
confirmPin.setFocusableInTouchMode(true);
confirmPin.setText("");
}
}
// Delete account pin file
private void deletePin() {
if (Hash.pinExists(this, mAccount.getEmail().toLowerCase())) {
AlertDialog.Builder alert = new AlertDialog.Builder(this);
alert.setTitle("Confirm PIN");
alert.setMessage("Enter your PIN to unlink it from this account");
// Set an EditText view to get user input
final EditText input = new EditText(this);
input.setInputType(InputType.TYPE_CLASS_PHONE);
input.setTransformationMethod(android.text.method.PasswordTransformationMethod.getInstance());
alert.setView(input);
alert.setPositiveButton(
"Ok",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
if (input.getText().length() < 4) {
Toast.makeText(
EncryptionPin.this, "Pin must be at least 4 characters", Toast.LENGTH_LONG)
.show();
return;
}
// Check .pin2
FileInputStream fis1;
try {
fis1 = openFileInput((mAccount.getEmail().toLowerCase()) + ".pin2");
BufferedReader in1 = new BufferedReader(new InputStreamReader(fis1));
String test = in1.readLine();
String storedHash = "";
while (test != null) {
storedHash = storedHash + test;
test = in1.readLine();
}
char[] inputPin = new char[input.getText().length()];
for (int i = 0; i < input.getText().length(); i++)
inputPin[i] = input.getText().charAt(i);
String storedStatic =
Hash.getStatic(storedHash, input.getText().length(), EncryptionPin.this);
String storedRand =
Hash.getRandom(storedHash, input.getText().length(), EncryptionPin.this);
String userHash =
Hash.verify(mAccount.getEmail().toString(), inputPin, storedRand, storedStatic);
if (storedHash != null && userHash != null)
if (Hash.compareHashes(storedHash, userHash)) {
Toast.makeText(
EncryptionPin.this, "Hashes match. Pin deleted.", Toast.LENGTH_SHORT)
.show();
EncryptionPin.this.deleteFile((mAccount.getEmail() + ".pin").toLowerCase());
EncryptionPin.this.deleteFile((mAccount.getEmail() + ".pin2").toLowerCase());
mAccount.setAskForPin("Never");
redraw();
MessageList.actionHandleFolder(
EncryptionPin.this, mAccount, mAccount.getAutoExpandFolderName());
finish();
} else
Toast.makeText(EncryptionPin.this, "Hash mismatch", Toast.LENGTH_SHORT).show();
} catch (FileNotFoundException e) {
Toast.makeText(EncryptionPin.this, "Hashed PIN not found", Toast.LENGTH_LONG)
.show();
} catch (IOException e) {
Toast.makeText(EncryptionPin.this, "Error retreiving PIN", Toast.LENGTH_SHORT)
.show();
}
char[] pinFromFile = new char[input.getText().length()];
for (int i = 0; i < input.getText().length(); i++)
pinFromFile[i] = input.getText().charAt(i);
// Check .pin
FileInputStream fis;
try {
fis = openFileInput((mAccount.getEmail().toLowerCase()) + ".pin");
BufferedReader in = new BufferedReader(new InputStreamReader(fis));
char[] pin = in.readLine().toCharArray();
if (Arrays.equals(pin, pinFromFile)) {
mAccount.setAskForPin("0");
EncryptionPin.this.deleteFile(
mAccount.getEmail().toString().toLowerCase() + ".pin");
Toast.makeText(EncryptionPin.this, "PIN removed", Toast.LENGTH_SHORT).show();
redraw();
((InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE))
.hideSoftInputFromWindow(input.getWindowToken(), 0);
mAccount.setAskForPin("Never");
// Return to settings
EncryptionSettings.encryptionSettings(EncryptionPin.this, mAccount);
} else
Toast.makeText(EncryptionPin.this, "Incorrect PIN", Toast.LENGTH_SHORT).show();
if (pin != null) Arrays.fill(pin, '0');
if (pinFromFile != null) Arrays.fill(pinFromFile, '0');
} catch (FileNotFoundException e) {
} catch (IOException e) {
}
}
});
alert.setNegativeButton(
"Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
// Canceled.
}
});
alert.setIcon(R.drawable.pin);
alert.show();
} else
Toast.makeText(
EncryptionPin.this, "PIN not yet created for this account.", Toast.LENGTH_SHORT)
.show();
}
