Example usage for javax.crypto CipherOutputStream write

Introduction

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

Prototype

public void write(byte b[], int off, int len) throws IOException 

Source Link

Document

Writes len bytes from the specified byte array starting at offset off to this output stream.

Usage

From source file:org.apache.synapse.securevault.BaseCipher.java

/**
 * Do cryptographic operation//from   w  ww  .j  ava 2 s .  c om
 *
 * @param inputStream Input Stream
 * @return result
 */
private byte[] doCipherOperation(byte[] inputStream) {

    InputStream sourceStream = new ByteArrayInputStream(inputStream);
    if (cipherInformation.getInType() != null) {
        try {
            sourceStream = EncodingHelper.decode(sourceStream, cipherInformation.getInType());
        } catch (IOException e) {
            throw new SecureVaultException("IOError when decoding the input " + "stream for cipher ", e, log);
        }
    }

    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) {
        throw new SecureVaultException("IOError when reading the input" + " stream for cipher ", e, log);
    } finally {
        try {
            sourceStream.close();
            out.flush();
            out.close();
        } catch (IOException ignored) {
            // ignore exception
        }
    }

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

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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   w w  w.j  ava2  s . c  om*/
 * @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.//from  ww  w.  j a v a  2s.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: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 {//  w  w w .  ja va  2s .  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: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   ww w. j  a  va2s  .  c  o  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:craterdog.security.MessageCryptex.java

@Override
public void encryptStream(SecretKey sharedKey, InputStream input, OutputStream output) throws IOException {
    logger.entry();/*from   w w  w.  java2 s  . com*/
    CipherOutputStream cipherOutput = null;
    byte[] buffer = new byte[2048];
    try {
        logger.debug("Creating a special output stream to do the work...");
        cipherOutput = encryptionOutputStream(sharedKey, output);

        logger.debug("Reading from the input and writing to the encrypting output stream...");
        // Can't use IOUtils.copy(input, cipherOutput) here because need to purge buffer later...
        int bytesRead;
        while ((bytesRead = input.read(buffer)) != -1) {
            cipherOutput.write(buffer, 0, bytesRead);
        }
        cipherOutput.flush();
    } finally {
        logger.debug("Purging any plaintext hanging around in memory...");
        Arrays.fill(buffer, (byte) 0);

        if (cipherOutput != null)
            cipherOutput.close();
    }
    logger.exit();
}

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From source file:com.aperigeek.dropvault.web.dao.MongoFileService.java

protected File createDataFile(InputStream data, String username, char[] password) throws IOException {
    try {//from  w ww  .ja  v a2 s .com
        String fileName = UUID.randomUUID().toString();

        File folder = new File(storageFolder, username);
        folder = new File(folder, fileName.substring(0, 2));
        folder.mkdirs();

        File file = new File(folder, fileName);

        Cipher cipher = Cipher.getInstance("Blowfish");
        cipher.init(Cipher.ENCRYPT_MODE, getSecretKey(username, password));

        OutputStream fOut = new BufferedOutputStream(new FileOutputStream(file));
        CipherOutputStream out = new CipherOutputStream(fOut, cipher);

        InputStream in = new BufferedInputStream(data);
        byte[] buffer = new byte[2048];
        int readed;
        while ((readed = in.read(buffer)) != -1) {
            out.write(buffer, 0, readed);
        }
        in.close();

        out.flush();
        out.close();
        fOut.flush();
        fOut.close();

        return file;
    } catch (Exception ex) {
        // TODO: better exception handling
        Logger.getAnonymousLogger().log(Level.SEVERE, "ERROR", ex);
        throw new RuntimeException(ex);
    } finally {
        data.close();
    }
}

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From source file:com.denel.facepatrol.MainActivity.java

private void decryptfile(Context mcontext, SecretKey key)
        throws IOException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException {

    File infile = mcontext.getDatabasePath(dbname_en);
    InputStream fis = new FileInputStream(infile);
    File outfile = mcontext.getDatabasePath(dbname);
    // parent directory for his file if it doesn't exist,
    // in this case it returns a false.
    outfile.getParentFile().mkdirs();//ww w  .  java  2 s . co m
    // This stream write the decrypted text. This stream will be wrapped by another stream. 
    FileOutputStream fos = new FileOutputStream(outfile);
    // Length is 16 byte // Careful when taking user input!!! 
    // http://stackoverflow.com/a/3452620/1188357 
    SecretKeySpec sks = new SecretKeySpec(key.getEncoded(), "AES");
    // Create cipher 
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.DECRYPT_MODE, sks);
    // Wrap the output stream 
    CipherOutputStream cos = new CipherOutputStream(fos, cipher);
    // Write bytes 
    int b;
    byte[] d = new byte[8];
    while ((b = fis.read(d)) != -1) {
        cos.write(d, 0, b);
    } // Flush and close streams. 
    cos.flush();
    cos.close();
    fis.close();
    // delete the encrypted file
    if (infile.exists()) {
        infile.delete();
    }
}

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From source file:com.denel.facepatrol.MainActivity.java

private void encryptfile(Context mcontext, SecretKey key)
        throws IOException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException {

    // This will probably change when I will the database will be downloaded from the server
    boolean db_file_exists = mcontext.getDatabasePath(dbname).exists();
    InputStream fis = null;//from  ww  w. j  a  va 2s  .  co  m
    File infile = mcontext.getDatabasePath(dbname);
    // check if database file exists to prevent downloading the file each start
    if (db_file_exists) {
        fis = new FileInputStream(infile);
    } else {
        fis = mcontext.getAssets().open(dbname);
    }
    // This stream write the encrypted text. This stream will be wrapped by another stream. 
    FileOutputStream fos = new FileOutputStream(mcontext.getDatabasePath(dbname_en).getAbsolutePath());
    // Length is 16 byte // Careful when taking user input!!! http://stackoverflow.com/a/3452620/1188357 
    SecretKeySpec sks = new SecretKeySpec(key.getEncoded(), "AES");
    // Create cipher 
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.ENCRYPT_MODE, sks);
    // Wrap the output stream 
    CipherOutputStream cos = new CipherOutputStream(fos, cipher);
    // Write bytes 
    int b;
    byte[] d = new byte[8];
    while ((b = fis.read(d)) != -1) {
        cos.write(d, 0, b);
    } // Flush and close streams. 
    cos.flush();
    cos.close();
    fis.close();
    // delete the decrypted file
    if (infile.exists()) {
        infile.delete();
    }
}

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From source file:org.apache.camel.converter.crypto.CryptoDataFormat.java

public void marshal(Exchange exchange, Object graph, OutputStream outputStream) throws Exception {
    byte[] iv = getInitializationVector(exchange);
    Key key = getKey(exchange);/*w  ww .  j av  a  2s  .  c o  m*/

    CipherOutputStream cipherStream = new CipherOutputStream(outputStream,
            initializeCipher(ENCRYPT_MODE, key, iv));
    InputStream plaintextStream = ExchangeHelper.convertToMandatoryType(exchange, InputStream.class, graph);
    HMACAccumulator hmac = getMessageAuthenticationCode(key);
    if (plaintextStream != null) {
        inlineInitVector(outputStream, iv);
        byte[] buffer = new byte[bufferSize];
        int read;
        try {
            while ((read = plaintextStream.read(buffer)) > 0) {
                cipherStream.write(buffer, 0, read);
                cipherStream.flush();
                hmac.encryptUpdate(buffer, read);
            }
            // only write if there is data to write (IBM JDK throws exception if no data)
            byte[] mac = hmac.getCalculatedMac();
            if (mac != null && mac.length > 0) {
                cipherStream.write(mac);
            }
        } finally {
            IOHelper.close(cipherStream, "cipher", LOG);
        }
    }
}

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