Example usage for javax.crypto CipherOutputStream close

Introduction

In this page you can find the example usage for javax.crypto CipherOutputStream close.

Prototype

public void close() throws IOException 

Source Link

Document

Closes this output stream and releases any system resources associated with this stream.

Usage

From source file:cd.education.data.collector.android.utilities.EncryptionUtils.java

private static void encryptFile(File file, EncryptedFormInformation formInfo)
        throws IOException, EncryptionException {
    File encryptedFile = new File(file.getParentFile(), file.getName() + ".enc");

    if (encryptedFile.exists() && !encryptedFile.delete()) {
        throw new IOException(
                "Cannot overwrite " + encryptedFile.getAbsolutePath() + ". Perhaps the file is locked?");
    }//w  w  w .j  a v  a 2s .co m

    // add elementSignatureSource for this file...
    formInfo.appendFileSignatureSource(file);

    RandomAccessFile randomAccessFile = null;
    CipherOutputStream cipherOutputStream = null;
    try {
        Cipher c = formInfo.getCipher();

        randomAccessFile = new RandomAccessFile(encryptedFile, "rws");
        ByteArrayOutputStream encryptedData = new ByteArrayOutputStream();
        cipherOutputStream = new CipherOutputStream(encryptedData, c);
        InputStream fin = new FileInputStream(file);
        byte[] buffer = new byte[2048];
        int len = fin.read(buffer);
        while (len != -1) {
            cipherOutputStream.write(buffer, 0, len);
            len = fin.read(buffer);
        }
        fin.close();
        cipherOutputStream.flush();
        cipherOutputStream.close();

        randomAccessFile.write(encryptedData.toByteArray());

        Log.i(t, "Encrpyted:" + file.getName() + " -> " + encryptedFile.getName());
    } catch (Exception e) {
        String msg = "Error encrypting: " + file.getName() + " -> " + encryptedFile.getName();
        Log.e(t, msg, e);
        e.printStackTrace();
        throw new EncryptionException(msg, e);
    } finally {
        IOUtils.closeQuietly(cipherOutputStream);

        if (randomAccessFile != null) {
            randomAccessFile.close();
        }
    }
}

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From source file:sec_algo.commonenc.java

/**
 * Encrypts the AES key to a file using an RSA public key
 *///from  w  w w.  ja  v  a2 s  .  c  o  m
public void saveKey(File out, File publicKeyFile) {
    try {
        // read public key to be used to encrypt the AES key
        byte[] encodedKey = new byte[(int) publicKeyFile.length()];
        new FileInputStream(publicKeyFile).read(encodedKey);

        // create public key
        X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(encodedKey);
        KeyFactory kf = KeyFactory.getInstance("RSA");
        PublicKey pk = kf.generatePublic(publicKeySpec);

        // write AES key
        pkCipher.init(Cipher.ENCRYPT_MODE, pk);
        CipherOutputStream os = new CipherOutputStream(new FileOutputStream(out), pkCipher);
        os.write(key);
        os.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:egovframework.com.ext.jfile.security.service.CipherServiceImpl.java

public void encrypt(InputStream in, OutputStream out)
        throws NoSuchAlgorithmException, InvalidKeyException, NoSuchPaddingException, IOException,
        BadPaddingException, InvalidKeySpecException, InvalidAlgorithmParameterException {
    Cipher cipher = Cipher.getInstance(jcrypto.getAlgorithm());
    if (JCryptoHelper.isNecessaryIvBytes(this.jcrypto.getAlgorithm())) {
        IvParameterSpec ivParameterSpec = new IvParameterSpec(JCryptoHelper.DEFAULT_IV_BYTES);
        cipher.init(Cipher.ENCRYPT_MODE, generateKey(JCryptoHelper.getKeyAlgorithm(this.jcrypto.getAlgorithm()),
                this.jcrypto.getAlgorithm(), this.jcrypto.getKeyBytes()), ivParameterSpec);
    } else {//from   ww  w  .ja v  a2  s. c o  m
        cipher.init(Cipher.ENCRYPT_MODE, generateKey(JCryptoHelper.getKeyAlgorithm(this.jcrypto.getAlgorithm()),
                this.jcrypto.getAlgorithm(), this.jcrypto.getKeyBytes()));
    }

    CipherOutputStream cos = new CipherOutputStream(out, cipher);

    byte[] buffer = new byte[2048];
    int bytesRead;
    while ((bytesRead = in.read(buffer)) != -1) {
        cos.write(buffer, 0, bytesRead);
        cos.flush();
    }
    cos.close();

    java.util.Arrays.fill(buffer, (byte) 0);
}

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From source file:edu.ncsu.asbransc.mouflon.recorder.UploadFile.java

private void encryptAndWriteAESKey(SecretKey aeskey, File dest)
        throws IOException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeySpecException,
        InvalidKeyException, IllegalBlockSizeException, BadPaddingException, NoSuchProviderException {
    Cipher keyc;//w ww.  j  av a  2 s.  c om
    AssetManager am = getAssets();
    InputStream in = am.open("mouflon_key.pub");
    byte[] readFromFile = new byte[in.available()];
    //TODO check that this is 294 bytes and replace with a constant. in.available is not guaranteed to return a useful value
    in.read(readFromFile);
    keyc = Cipher.getInstance("RSA/ECB/PKCS1Padding", "BC");
    //ECB and CBC etc don't make sense for RSA, but the way this API is designed you have to specify something.
    KeyFactory kf = KeyFactory.getInstance("RSA");
    KeySpec ks = new X509EncodedKeySpec(readFromFile);
    RSAPublicKey key = (RSAPublicKey) kf.generatePublic(ks);
    keyc.init(Cipher.ENCRYPT_MODE, key);
    //byte[] encrpytedKey = keyc.doFinal(aeskey.getEncoded());
    FileOutputStream out = new FileOutputStream(dest);
    CipherOutputStream outcipher = new CipherOutputStream(out, keyc);
    outcipher.write(aeskey.getEncoded());
    outcipher.close();
    out.close();
}

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From source file:org.linagora.linshare.core.utils.SymmetricEnciphermentPBEwithAES.java

public void encryptStream() throws IOException {

    if (cipherMode != Cipher.ENCRYPT_MODE)
        throw new IllegalStateException("can not call encrypt, check cipher mode");

    out.write(salt, 0, SALT_NUMBER_BITES);

    byte v[] = new byte[4];
    //*** writeInt
    v[0] = (byte) (0xff & (iterations >> 24));
    v[1] = (byte) (0xff & (iterations >> 16));
    v[2] = (byte) (0xff & (iterations >> 8));
    v[3] = (byte) (0xff & iterations);
    out.write(v);/*from  www  . j  a  v a2 s  .  co m*/
    out.flush();

    CipherOutputStream cos = new CipherOutputStream(out, cipher);

    // Read from the input and write to the encrypting output stream
    byte[] buffer = new byte[2048];
    int bytesRead;

    while ((bytesRead = in.read(buffer)) != -1) {
        cos.write(buffer, 0, bytesRead);
    }

    cos.flush();
    cos.close();
    out.close();
    in.close();
}

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From source file:org.apache.synapse.commons.security.wrappers.CipherWrapper.java

/**
 * Returns the output of the cipher operation.
 * This expose the 'getSecret' abstraction and hide operation of the underlying cipher
 *
 * @param inputStream Input as a stream. This can be either cipher or plain text
 * @return Secret as String.This can be either cipher or plain text
 *///  ww w.j a v  a 2  s. c o  m
public String getSecret(InputStream inputStream) {

    InputStream sourceStream = null;
    if (cipherInformation.getInType() != null) {
        try {
            sourceStream = EncodingHelper.decode(inputStream, cipherInformation.getInType());
        } catch (IOException e) {
            handleException("IOError when decoding the input stream for cipher ", e);
        }
    } else {
        sourceStream = inputStream;
    }

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    CipherOutputStream out = new CipherOutputStream(baos, cipher);

    byte[] buffer = new byte[64];
    int length;
    try {
        while ((length = sourceStream.read(buffer)) != -1) {
            out.write(buffer, 0, length);
        }
    } catch (IOException e) {
        handleException("IOError when reading the input stream for cipher ", e);
    } finally {
        try {
            sourceStream.close();
            out.flush();
            out.close();
        } catch (IOException ignored) {
            // ignore exception
        }
    }

    String secret;
    if (cipherInformation.getOutType() != null) {
        secret = EncodingHelper.encode(baos, cipherInformation.getOutType());
    } else {
        secret = baos.toString();
    }
    return secret;
}

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From source file:org.grycap.gpf4med.security.FileEncryptionProvider.java

/**
 * Encrypts the message read from the specified input stream and writes the cipher text to the 
 * specified output stream.//from   www .  ja va 2  s. c  o  m
 * @param fis input stream from where to read the plain text message.
 * @param fos output stream to where the cipher text is written.
 * @throws Exception if an error occurs in the execution of the operation.
 */
public void encrypt(final InputStream fis, final OutputStream fos) throws Exception {
    CipherOutputStream cos = null;
    try {
        cos = new CipherOutputStream(fos, encryptCipher);
        final byte[] buffer = new byte[1024];
        int bytesRead = 0;
        while ((bytesRead = fis.read(buffer)) >= 0) {
            cos.write(buffer, 0, bytesRead);
        }
        cos.flush();
    } finally {
        try {
            fis.close();
        } catch (Exception ignore) {
        }
        try {
            cos.close();
        } catch (Exception ignore) {
        }
    }
}

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From source file:org.grycap.gpf4med.security.FileEncryptionProvider.java

/**
 * Decrypts the cipher text read from the specified input stream and writes the decrypted message to 
 * the specified output stream./*  ww  w .j  a  v  a2 s.c  o m*/
 * @param inputStream input stream from where to read the cipher text.
 * @param outputStream output stream to where the decrypted message is written.
 * @throws Exception if an error occurs in the execution of the operation.
 */
public void decrypt(final InputStream fis, final OutputStream fos) throws Exception {
    CipherOutputStream cos = null;
    try {
        cos = new CipherOutputStream(fos, decryptCipher);
        final byte[] buffer = new byte[1024];
        int bytesRead = 0;
        while ((bytesRead = fis.read(buffer)) >= 0) {
            cos.write(buffer, 0, bytesRead);
        }
        cos.flush();
    } finally {
        try {
            fis.close();
        } catch (Exception ignore) {
        }
        try {
            cos.close();
        } catch (Exception ignore) {
        }
    }
}

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From source file:net.tawacentral.roger.secrets.FileUtils.java

/**
 * Returns an encrypted json stream representing the user's secrets.
 *
 * @param cipher/*from w  ww .  j av a 2s  . c om*/
 *          The encryption cipher to use with the file.
 * @param secrets
 *          The list of secrets.
 * @return byte array of secrets
 * @throws IOException
 *           if any error occurs
 */
public static byte[] toEncryptedJSONSecretsStream(Cipher cipher, ArrayList<Secret> secrets) throws IOException {
    CipherOutputStream output = null;
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    try {
        output = new CipherOutputStream(baos, cipher);
        output.write(FileUtils.toJSONSecrets(secrets).toString().getBytes("UTF-8"));
    } catch (Exception e) {
        Log.e(LOG_TAG, "toEncryptedJSONSecretsStream", e);
        throw new IOException("toEncryptedJSONSecretsStream failed: " + e.getMessage());
    } finally {
        try {
            if (null != output)
                output.close();
        } catch (IOException ex) {
        }
    }

    return baos.toByteArray();
}

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From source file:de.schildbach.wallet.util.FingerprintHelper.java

@RequiresApi(api = Build.VERSION_CODES.M)
public boolean encryptPassword(Cipher cipher, String password) {
    try {//from   w  ww . j a va  2  s  . c  om
        // Encrypt the text
        if (password.isEmpty()) {
            log.info("Password is empty");
            return false;
        }

        if (cipher == null) {
            log.info("Could not create cipher");
            return false;
        }

        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        CipherOutputStream cipherOutputStream = new CipherOutputStream(outputStream, cipher);
        byte[] bytes = password.getBytes(Charset.defaultCharset());
        cipherOutputStream.write(bytes);
        cipherOutputStream.flush();
        cipherOutputStream.close();
        saveEncryptedPassword(encodeBytes(outputStream.toByteArray()));
    } catch (Throwable t) {
        log.info("Encryption failed " + t.getMessage());
        return false;
    }

    return true;
}

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