Examples with CipherInputStream org.bouncycastle.crypto.io.CipherInputStream used on opensource projects

Example 1 with CipherInputStream

use of org.bouncycastle.crypto.io.CipherInputStream in project Conversations by siacs.

the class AbstractConnectionManager method upgrade.

public static InputStream upgrade(DownloadableFile file, InputStream is) {
    if (file.getKey() != null && file.getIv() != null) {
        AEADBlockCipher cipher = new GCMBlockCipher(new AESEngine());
        cipher.init(true, new AEADParameters(new KeyParameter(file.getKey()), 128, file.getIv()));
        return new CipherInputStream(is, cipher);
    } else {
        return is;
    }
}

Example 2 with CipherInputStream

use of org.bouncycastle.crypto.io.CipherInputStream in project Conversations by siacs.

the class ImportBackupService method importBackup.

private boolean importBackup(final Uri uri, final String password) {
    Log.d(Config.LOGTAG, "importing backup from " + uri);
    final Stopwatch stopwatch = Stopwatch.createStarted();
    try {
        final SQLiteDatabase db = mDatabaseBackend.getWritableDatabase();
        final InputStream inputStream;
        final String path = uri.getPath();
        final long fileSize;
        if ("file".equals(uri.getScheme()) && path != null) {
            final File file = new File(path);
            inputStream = new FileInputStream(file);
            fileSize = file.length();
        } else {
            final Cursor returnCursor = getContentResolver().query(uri, null, null, null, null);
            if (returnCursor == null) {
                fileSize = 0;
            } else {
                returnCursor.moveToFirst();
                fileSize = returnCursor.getLong(returnCursor.getColumnIndex(OpenableColumns.SIZE));
                returnCursor.close();
            }
            inputStream = getContentResolver().openInputStream(uri);
        }
        if (inputStream == null) {
            synchronized (mOnBackupProcessedListeners) {
                for (final OnBackupProcessed l : mOnBackupProcessedListeners) {
                    l.onBackupRestoreFailed();
                }
            }
            return false;
        }
        final CountingInputStream countingInputStream = new CountingInputStream(inputStream);
        final DataInputStream dataInputStream = new DataInputStream(countingInputStream);
        final BackupFileHeader backupFileHeader = BackupFileHeader.read(dataInputStream);
        Log.d(Config.LOGTAG, backupFileHeader.toString());
        if (mDatabaseBackend.getAccountJids(false).contains(backupFileHeader.getJid())) {
            synchronized (mOnBackupProcessedListeners) {
                for (OnBackupProcessed l : mOnBackupProcessedListeners) {
                    l.onAccountAlreadySetup();
                }
            }
            return false;
        }
        final byte[] key = ExportBackupService.getKey(password, backupFileHeader.getSalt());
        final AEADBlockCipher cipher = new GCMBlockCipher(new AESEngine());
        cipher.init(false, new AEADParameters(new KeyParameter(key), 128, backupFileHeader.getIv()));
        final CipherInputStream cipherInputStream = new CipherInputStream(countingInputStream, cipher);
        final GZIPInputStream gzipInputStream = new GZIPInputStream(cipherInputStream);
        final BufferedReader reader = new BufferedReader(new InputStreamReader(gzipInputStream, Charsets.UTF_8));
        db.beginTransaction();
        String line;
        StringBuilder multiLineQuery = null;
        while ((line = reader.readLine()) != null) {
            int count = count(line, '\'');
            if (multiLineQuery != null) {
                multiLineQuery.append('\n');
                multiLineQuery.append(line);
                if (count % 2 == 1) {
                    db.execSQL(multiLineQuery.toString());
                    multiLineQuery = null;
                    updateImportBackupNotification(fileSize, countingInputStream.getCount());
                }
            } else {
                if (count % 2 == 0) {
                    db.execSQL(line);
                    updateImportBackupNotification(fileSize, countingInputStream.getCount());
                } else {
                    multiLineQuery = new StringBuilder(line);
                }
            }
        }
        db.setTransactionSuccessful();
        db.endTransaction();
        final Jid jid = backupFileHeader.getJid();
        final Cursor countCursor = db.rawQuery("select count(messages.uuid) from messages join conversations on conversations.uuid=messages.conversationUuid join accounts on conversations.accountUuid=accounts.uuid where accounts.username=? and accounts.server=?", new String[] { jid.getEscapedLocal(), jid.getDomain().toEscapedString() });
        countCursor.moveToFirst();
        final int count = countCursor.getInt(0);
        Log.d(Config.LOGTAG, String.format("restored %d messages in %s", count, stopwatch.stop().toString()));
        countCursor.close();
        stopBackgroundService();
        synchronized (mOnBackupProcessedListeners) {
            for (OnBackupProcessed l : mOnBackupProcessedListeners) {
                l.onBackupRestored();
            }
        }
        return true;
    } catch (final Exception e) {
        final Throwable throwable = e.getCause();
        final boolean reasonWasCrypto = throwable instanceof BadPaddingException || e instanceof ZipException;
        synchronized (mOnBackupProcessedListeners) {
            for (OnBackupProcessed l : mOnBackupProcessedListeners) {
                if (reasonWasCrypto) {
                    l.onBackupDecryptionFailed();
                } else {
                    l.onBackupRestoreFailed();
                }
            }
        }
        Log.d(Config.LOGTAG, "error restoring backup " + uri, e);
        return false;
    }
}

Example 3 with CipherInputStream

use of org.bouncycastle.crypto.io.CipherInputStream in project Zom-Android by zom.

the class Downloader method setupInputStream.

public static InputStream setupInputStream(InputStream is, byte[] keyAndIv) {
    if (keyAndIv != null && keyAndIv.length == 48) {
        byte[] key = new byte[32];
        byte[] iv = new byte[16];
        System.arraycopy(keyAndIv, 0, iv, 0, 16);
        System.arraycopy(keyAndIv, 16, key, 0, 32);
        AEADBlockCipher cipher = new GCMBlockCipher(new AESEngine());
        cipher.init(true, new AEADParameters(new KeyParameter(key), 128, iv));
        return new CipherInputStream(is, cipher);
    } else {
        return is;
    }
}