/**
* Checks if key has a passphrase
*
* @param secretKeyId
* @return true if it has a passphrase
*/
private static boolean hasPassphrase(Context context, long secretKeyId) {
// check if the key has no passphrase
try {
PGPSecretKey secretKey =
PGPHelper.getMasterKey(ProviderHelper.getPGPSecretKeyRingByKeyId(context, secretKeyId));
// PGPSecretKey secretKey =
// PGPHelper.getMasterKey(PGPMain.getSecretKeyRing(secretKeyId));
Log.d(Constants.TAG, "Check if key has no passphrase...");
PBESecretKeyDecryptor keyDecryptor =
new JcePBESecretKeyDecryptorBuilder().setProvider("SC").build("".toCharArray());
PGPPrivateKey testKey = secretKey.extractPrivateKey(keyDecryptor);
if (testKey != null) {
Log.d(Constants.TAG, "Key has no passphrase! Caches empty passphrase!");
// cache empty passphrase
PassphraseCacheService.addCachedPassphrase(context, secretKey.getKeyID(), "");
return false;
}
} catch (PGPException e) {
// silently catch
}
return true;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.edit_key);
mActionBar = getSupportActionBar();
mActionBar.setDisplayShowTitleEnabled(true);
// set actionbar without home button if called from another app
if (getCallingPackage() != null && getCallingPackage().equals(Constants.PACKAGE_NAME)) {
mActionBar.setDisplayHomeAsUpEnabled(true);
mActionBar.setHomeButtonEnabled(true);
} else {
mActionBar.setDisplayHomeAsUpEnabled(false);
mActionBar.setHomeButtonEnabled(false);
}
// find views
mChangePassPhrase = (Button) findViewById(R.id.edit_key_btn_change_pass_phrase);
mNoPassphrase = (CheckBox) findViewById(R.id.edit_key_no_passphrase);
mUserIds = new Vector<String>();
mKeys = new Vector<PGPSecretKey>();
mKeysUsages = new Vector<Integer>();
// Catch Intents opened from other apps
mIntent = getIntent();
// Handle intents
Bundle extras = mIntent.getExtras();
if (ACTION_CREATE_KEY.equals(mIntent.getAction())) {
mActionBar.setTitle(R.string.title_createKey);
mCurrentPassPhrase = "";
if (extras != null) {
// if userId is given, prefill the fields
if (extras.containsKey(EXTRA_USER_IDS)) {
Log.d(Constants.TAG, "UserIds are given!");
mUserIds.add(extras.getString(EXTRA_USER_IDS));
}
// if no passphrase is given
if (extras.containsKey(EXTRA_NO_PASSPHRASE)) {
boolean noPassphrase = extras.getBoolean(EXTRA_NO_PASSPHRASE);
if (noPassphrase) {
// check "no passphrase" checkbox and remove button
mNoPassphrase.setChecked(true);
mChangePassPhrase.setVisibility(View.GONE);
}
}
// generate key
if (extras.containsKey(EXTRA_GENERATE_DEFAULT_KEYS)) {
boolean generateDefaultKeys = extras.getBoolean(EXTRA_GENERATE_DEFAULT_KEYS);
if (generateDefaultKeys) {
// build layout in handler after generating keys not directly in onCreate
mBuildLayout = false;
// Send all information needed to service generate keys in other thread
Intent intent = new Intent(this, ApgService.class);
intent.putExtra(ApgService.EXTRA_ACTION, ApgService.ACTION_GENERATE_DEFAULT_RSA_KEYS);
// fill values for this action
Bundle data = new Bundle();
data.putString(ApgService.SYMMETRIC_PASSPHRASE, mCurrentPassPhrase);
intent.putExtra(ApgService.EXTRA_DATA, data);
// show progress dialog
mGeneratingDialog =
ProgressDialogFragment.newInstance(
R.string.progress_generating, ProgressDialog.STYLE_SPINNER);
// Message is received after generating is done in ApgService
ApgHandler saveHandler =
new ApgHandler(this, mGeneratingDialog) {
public void handleMessage(Message message) {
// handle messages by standard ApgHandler first
super.handleMessage(message);
if (message.arg1 == ApgHandler.MESSAGE_OKAY) {
// get new key from data bundle returned from service
Bundle data = message.getData();
PGPSecretKeyRing masterKeyRing =
PGPConversionHelper.BytesToPGPSecretKeyRing(
data.getByteArray(ApgService.RESULT_NEW_KEY));
PGPSecretKeyRing subKeyRing =
PGPConversionHelper.BytesToPGPSecretKeyRing(
data.getByteArray(ApgService.RESULT_NEW_KEY2));
// add master key
Iterator<PGPSecretKey> masterIt = masterKeyRing.getSecretKeys();
mKeys.add(masterIt.next());
mKeysUsages.add(Id.choice.usage.sign_only);
// add sub key
Iterator<PGPSecretKey> subIt = subKeyRing.getSecretKeys();
subIt.next(); // masterkey
mKeys.add(subIt.next());
mKeysUsages.add(Id.choice.usage.encrypt_only);
buildLayout();
}
};
};
// Create a new Messenger for the communication back
Messenger messenger = new Messenger(saveHandler);
intent.putExtra(ApgService.EXTRA_MESSENGER, messenger);
mGeneratingDialog.show(getSupportFragmentManager(), "dialog");
// start service with intent
startService(intent);
}
}
}
} else if (ACTION_EDIT_KEY.equals(mIntent.getAction())) {
mActionBar.setTitle(R.string.title_editKey);
mCurrentPassPhrase = PGPMain.getEditPassPhrase();
if (mCurrentPassPhrase == null) {
mCurrentPassPhrase = "";
}
if (mCurrentPassPhrase.equals("")) {
// check "no passphrase" checkbox and remove button
mNoPassphrase.setChecked(true);
mChangePassPhrase.setVisibility(View.GONE);
}
if (extras != null) {
if (extras.containsKey(EXTRA_KEY_ID)) {
long keyId = mIntent.getExtras().getLong(EXTRA_KEY_ID);
if (keyId != 0) {
PGPSecretKey masterKey = null;
mKeyRing = PGPMain.getSecretKeyRing(keyId);
if (mKeyRing != null) {
masterKey = PGPHelper.getMasterKey(mKeyRing);
for (PGPSecretKey key :
new IterableIterator<PGPSecretKey>(mKeyRing.getSecretKeys())) {
mKeys.add(key);
mKeysUsages.add(-1); // get usage when view is created
}
}
if (masterKey != null) {
for (String userId : new IterableIterator<String>(masterKey.getUserIDs())) {
mUserIds.add(userId);
}
}
}
}
}
}
mChangePassPhrase.setOnClickListener(
new OnClickListener() {
public void onClick(View v) {
showDialog(Id.dialog.new_pass_phrase);
}
});
// disable passphrase when no passphrase checkobox is checked!
mNoPassphrase.setOnCheckedChangeListener(
new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
// remove passphrase
mNewPassPhrase = null;
mChangePassPhrase.setVisibility(View.GONE);
} else {
mChangePassPhrase.setVisibility(View.VISIBLE);
}
}
});
if (mBuildLayout) {
buildLayout();
}
}
/** Creates dialog */
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final Activity activity = getActivity();
long secretKeyId = getArguments().getLong(ARG_SECRET_KEY_ID);
mMessenger = getArguments().getParcelable(ARG_MESSENGER);
AlertDialog.Builder alert = new AlertDialog.Builder(activity);
alert.setTitle(R.string.title_authentication);
final PGPSecretKey secretKey;
if (secretKeyId == Id.key.symmetric || secretKeyId == Id.key.none) {
secretKey = null;
alert.setMessage(R.string.passPhraseForSymmetricEncryption);
} else {
// TODO: by master key id???
secretKey =
PGPHelper.getMasterKey(
ProviderHelper.getPGPSecretKeyRingByMasterKeyId(activity, secretKeyId));
// secretKey = PGPHelper.getMasterKey(PGPMain.getSecretKeyRing(secretKeyId));
if (secretKey == null) {
alert.setTitle(R.string.title_keyNotFound);
alert.setMessage(getString(R.string.keyNotFound, secretKeyId));
alert.setPositiveButton(
android.R.string.ok,
new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dismiss();
}
});
alert.setCancelable(false);
return alert.create();
}
String userId = PGPHelper.getMainUserIdSafe(activity, secretKey);
Log.d(Constants.TAG, "User id: '" + userId + "'");
alert.setMessage(getString(R.string.passPhraseFor, userId));
}
LayoutInflater inflater = activity.getLayoutInflater();
View view = inflater.inflate(R.layout.passphrase, null);
alert.setView(view);
mPassphraseEditText = (EditText) view.findViewById(R.id.passphrase_passphrase);
alert.setPositiveButton(
android.R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dismiss();
String passPhrase = mPassphraseEditText.getText().toString();
long keyId;
if (secretKey != null) {
try {
PBESecretKeyDecryptor keyDecryptor =
new JcePBESecretKeyDecryptorBuilder()
.setProvider(PGPMain.BOUNCY_CASTLE_PROVIDER_NAME)
.build(passPhrase.toCharArray());
PGPPrivateKey testKey = secretKey.extractPrivateKey(keyDecryptor);
if (testKey == null) {
Toast.makeText(
activity, R.string.error_couldNotExtractPrivateKey, Toast.LENGTH_SHORT)
.show();
return;
}
} catch (PGPException e) {
Toast.makeText(activity, R.string.wrongPassPhrase, Toast.LENGTH_SHORT).show();
return;
}
keyId = secretKey.getKeyID();
} else {
keyId = Id.key.symmetric;
}
// cache the new passphrase
Log.d(Constants.TAG, "Everything okay! Caching entered passphrase");
PassphraseCacheService.addCachedPassphrase(activity, keyId, passPhrase);
sendMessageToHandler(MESSAGE_OKAY);
}
});
alert.setNegativeButton(
android.R.string.cancel,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dismiss();
}
});
return alert.create();
}