public FingerprintEncryption(FingerprintModule fingerprint, string keyId) :
base(fingerprint, keyId)
{
_keyGen = fingerprint.KeyGenerator;
Kp2aLog.Log("FP: CreateKey ");
CreateKey();
}
public override void OnRequestPermissionsResult(int requestCode, string[] permissions, Permission[] grantResults)
{
if (requestCode == FINGERPRINT_PERMISSION_REQUEST_CODE && grantResults[0] == Android.Content.PM.Permission.Granted)
{
Button encButton = FindViewById <Button>(Resource.Id.MyButton);
Button decButton = FindViewById <Button>(Resource.Id.Decrypt);
encButton.Visibility = ViewStates.Visible;
encButton.Enabled = true;
var fingerprint = new keepass2android.FingerprintModule(this);
encButton.Click += (sender, args) =>
{
var fingerprintEnc = new FingerprintEncryption(fingerprint, _keyId);
if (fingerprintEnc.InitCipher())
{
fingerprintEnc.StartListening(new EncryptionCallback(this, fingerprintEnc, prefKey));
}
else
{
Toast.MakeText(this, "Error initiating cipher", ToastLength.Long).Show();
}
};
decButton.Click += (sender, args) =>
{
var fingerprintDec = new FingerprintDecryption(fingerprint, _keyId, this, prefKey);
if (fingerprintDec.InitCipher())
{
fingerprintDec.StartListening(new DecryptionCallback(this, fingerprintDec, prefKey));
}
else
{
Toast.MakeText(this, "Error initiating cipher", ToastLength.Long).Show();
}
};
if (!fingerprint.KeyguardManager.IsKeyguardSecure)
{
encButton.Enabled = false;
// Show a message that the user hasn't set up a fingerprint or lock screen.
Toast.MakeText(this, "Secure lock screen hasn't set up.\n"
+ "Go to 'Settings -> Security -> Fingerprint' to set up a fingerprint", ToastLength.Long).Show();
return;
}
if (!fingerprint.FingerprintManager.HasEnrolledFingerprints)
{
encButton.Enabled = false;
// This happens when no fingerprints are registered.
Toast.MakeText(this, "Go to 'Settings -> Security -> Fingerprint' " +
"and register at least one fingerprint", ToastLength.Long).Show();
return;
}
}
}
public FingerprintCrypt(FingerprintModule fingerprint, string keyId)
{
_keyId = keyId;
_cipher = fingerprint.Cipher;
_keystore = fingerprint.Keystore;
_fingerprintManager = fingerprint.FingerprintManager;
}
public FingerprintCrypt(FingerprintModule fingerprint, string keyId)
{
Kp2aLog.Log("FP: Create " + this.GetType().Name);
_keyId = keyId;
_cipher = fingerprint.Cipher;
_keystore = fingerprint.Keystore;
_fingerprintManager = fingerprint.FingerprintManager;
}
public override void OnRequestPermissionsResult(int requestCode, string[] permissions, Permission[] grantResults)
{
if (requestCode == FingerprintPermissionRequestCode && grantResults[0] == Permission.Granted)
{
FingerprintModule fpModule = new FingerprintModule(this);
if (!fpModule.FingerprintManager.IsHardwareDetected)
{
//seems like not all Samsung Devices (e.g. Note 4) don't support the Android 6 fingerprint API
if (!TrySetupSamsung())
{
SetError(Resource.String.fingerprint_hardware_error);
}
UpdateKeyboardCheckboxVisibility();
return;
}
if (!fpModule.FingerprintManager.HasEnrolledFingerprints)
{
SetError(Resource.String.fingerprint_no_enrolled);
return;
}
ShowRadioButtons();
UpdateKeyboardCheckboxVisibility();
}
}
public FingerprintDecryption(FingerprintModule fingerprint, string keyId, Context context, string prefKey)
: base(fingerprint, keyId)
{
_context = context;
_iv = Base64.Decode(PreferenceManager.GetDefaultSharedPreferences(context).GetString(GetIvPrefKey(prefKey), null), 0);
}
public FingerprintDecryption(FingerprintModule fingerprint, string keyId, byte[] iv) : base(fingerprint, keyId)
{
_iv = iv;
}
private bool InitFingerprintUnlock()
{
Kp2aLog.Log("InitFingerprintUnlock");
if (_fingerprintIdentifier != null)
{
Kp2aLog.Log("Already listening for fingerprint!");
return(true);
}
var btn = FindViewById <ImageButton>(Resource.Id.fingerprintbtn);
try
{
FingerprintUnlockMode um;
Enum.TryParse(PreferenceManager.GetDefaultSharedPreferences(this).GetString(App.Kp2a.GetDbForQuickUnlock().CurrentFingerprintModePrefKey, ""), out um);
btn.Visibility = (um != FingerprintUnlockMode.Disabled) ? ViewStates.Visible : ViewStates.Gone;
if (um == FingerprintUnlockMode.Disabled)
{
_fingerprintIdentifier = null;
return(false);
}
if (_fingerprintPermissionGranted)
{
FingerprintModule fpModule = new FingerprintModule(this);
Kp2aLog.Log("fpModule.FingerprintManager.IsHardwareDetected=" + fpModule.FingerprintManager.IsHardwareDetected);
if (fpModule.FingerprintManager.IsHardwareDetected) //see FingerprintSetupActivity
{
_fingerprintIdentifier = new FingerprintDecryption(fpModule, App.Kp2a.GetDbForQuickUnlock().CurrentFingerprintPrefKey, this,
App.Kp2a.GetDbForQuickUnlock().CurrentFingerprintPrefKey);
}
}
if ((_fingerprintIdentifier == null) && (!FingerprintDecryption.IsSetUp(this, App.Kp2a.GetDbForQuickUnlock().CurrentFingerprintPrefKey)))
{
try
{
Kp2aLog.Log("trying Samsung Fingerprint API...");
_fingerprintIdentifier = new FingerprintSamsungIdentifier(this);
btn.Click += (sender, args) =>
{
if (_fingerprintIdentifier.Init())
{
_fingerprintIdentifier.StartListening(this, this);
}
};
Kp2aLog.Log("trying Samsung Fingerprint API...Seems to work!");
}
catch (Exception)
{
Kp2aLog.Log("trying Samsung Fingerprint API...failed.");
_fingerprintIdentifier = null;
}
}
if (_fingerprintIdentifier == null)
{
FindViewById <ImageButton>(Resource.Id.fingerprintbtn).Visibility = ViewStates.Gone;
return(false);
}
btn.Tag = GetString(Resource.String.fingerprint_unlock_hint);
if (_fingerprintIdentifier.Init())
{
Kp2aLog.Log("successfully initialized fingerprint.");
btn.SetImageResource(Resource.Drawable.ic_fp_40px);
_fingerprintIdentifier.StartListening(this, this);
return(true);
}
else
{
Kp2aLog.Log("failed to initialize fingerprint.");
HandleFingerprintKeyInvalidated();
}
}
catch (Exception e)
{
Kp2aLog.Log("Error initializing Fingerprint Unlock: " + e);
btn.SetImageResource(Resource.Drawable.ic_fingerprint_error);
btn.Tag = "Error initializing Fingerprint Unlock: " + e;
_fingerprintIdentifier = null;
}
return(false);
}
