Example usage for javax.crypto CipherOutputStream CipherOutputStream

Introduction

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

Prototype

public CipherOutputStream(OutputStream os, Cipher c) 

Source Link

Document

Constructs a CipherOutputStream from an OutputStream and a Cipher.

Usage

From source file:org.zuinnote.hadoop.office.format.common.writer.msexcel.internal.EncryptedZipEntrySource.java

public void setInputStream(InputStream is) throws IOException {
    this.tmpFile = TempFile.createTempFile("hadoopoffice-protected", ".zip");

    ZipArchiveInputStream zis = new ZipArchiveInputStream(is);
    FileOutputStream fos = new FileOutputStream(tmpFile);
    ZipArchiveOutputStream zos = new ZipArchiveOutputStream(fos);
    ZipArchiveEntry ze;// w  ww  .  j  av a2 s  .co m
    while ((ze = (ZipArchiveEntry) zis.getNextEntry()) != null) {
        // rewrite zip entries to match the size of the encrypted data (with padding)
        ZipArchiveEntry zeNew = new ZipArchiveEntry(ze.getName());
        zeNew.setComment(ze.getComment());
        zeNew.setExtra(ze.getExtra());
        zeNew.setTime(ze.getTime());
        zos.putArchiveEntry(zeNew);
        FilterOutputStream fos2 = new FilterOutputStream(zos) {
            // do not close underlyzing ZipOutputStream
            @Override
            public void close() {
            }
        };
        OutputStream nos;
        if (this.ciEncoder != null) { // encrypt if needed
            nos = new CipherOutputStream(fos2, this.ciEncoder);
        } else { // do not encrypt
            nos = fos2;
        }
        IOUtils.copy(zis, nos);
        nos.close();
        if (fos2 != null) {
            fos2.close();
        }
        zos.closeArchiveEntry();

    }
    zos.close();
    fos.close();
    zis.close();
    IOUtils.closeQuietly(is);
    this.zipFile = new ZipFile(this.tmpFile);

}

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From source file:uploadProcess.java

public static boolean decrypt(File inputFolder, String fileName, String patientID, String viewKey) {
    try {/*from ww  w  .j a v a2s .  c o  m*/

        String ukey = GetKey.getPatientKey(patientID);
        if (viewKey.equals(ukey)) {
            //Download File from Cloud..
            DropboxUpload download = new DropboxUpload();
            download.downloadFile(fileName, StoragePath.getDropboxDir() + patientID, inputFolder);

            File inputFile = new File(inputFolder.getAbsolutePath() + File.separator + fileName);
            FileInputStream fis = new FileInputStream(inputFile);
            File outputFolder = new File(inputFolder.getAbsolutePath() + File.separator + "temp");
            if (!outputFolder.exists()) {
                outputFolder.mkdir();
            }
            FileOutputStream fos = new FileOutputStream(
                    outputFolder.getAbsolutePath() + File.separator + fileName);
            byte[] k = ukey.getBytes();
            SecretKeySpec key = new SecretKeySpec(k, "AES");
            Cipher enc = Cipher.getInstance("AES");
            enc.init(Cipher.DECRYPT_MODE, key);
            CipherOutputStream cos = new CipherOutputStream(fos, enc);
            byte[] buf = new byte[1024];
            int read;
            while ((read = fis.read(buf)) != -1) {
                cos.write(buf, 0, read);
            }
            fis.close();
            fos.flush();
            cos.close();
            return true;
        } else {
            return false;
        }
    } catch (Exception e) {
        System.out.println("Error: " + e);
    }
    return false;
}

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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  a  2  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:enc_mods.aes.java

/**
 * Encrypts the AES key to a file using an RSA public key
 *///from www.  ja  v  a 2s. c om
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
        cipher.init(Cipher.ENCRYPT_MODE, pk);
        CipherOutputStream os = new CipherOutputStream(new FileOutputStream(out), cipher);
        os.write(key);
        os.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:org.wso2.carbon.apimgt.core.impl.FileEncryptionUtility.java

/**
 * Encrypts the contents of a file and stores it in a new file
 *
 * @param inputFilePath    absolute path of the file to encrypt
 * @param outputFilePath   expected absolute path of the new encrypted file
 * @throws APIManagementException  if an error occurs encrypting the file
 *//*  w w w .j  a  v  a  2s .  c o m*/
public void encryptFile(String inputFilePath, String outputFilePath) throws APIManagementException {
    InputStream inputStream = null;
    CipherOutputStream cipherOutStream = null;
    try {
        Cipher aesCipher = Cipher.getInstance(EncryptionConstants.AES);
        SecretKeySpec aesKeySpec = new SecretKeySpec(getAESKey(), EncryptionConstants.AES);
        aesCipher.init(Cipher.ENCRYPT_MODE, aesKeySpec);

        Files.deleteIfExists(Paths.get(outputFilePath));
        inputStream = APIFileUtils.readFileContentAsStream(inputFilePath);
        cipherOutStream = new CipherOutputStream(new FileOutputStream(outputFilePath), aesCipher);
        IOUtils.copy(inputStream, cipherOutStream);
        APIFileUtils.deleteFile(inputFilePath);
        log.debug("Successfully encrypted file using stored AES key");
    } catch (NoSuchPaddingException | NoSuchAlgorithmException | IOException | InvalidKeyException e) {
        String msg = "Error while encrypting the file at " + inputFilePath;
        throw new APIManagementException(msg, e);
    } finally {
        IOUtils.closeQuietly(inputStream);
        IOUtils.closeQuietly(cipherOutStream);
    }
}

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From source file:models.logic.CipherDecipher.java

public static void encryptOrDecrypt(SecretKey key, int mode, InputStream is, OutputStream os) throws Throwable {
    Cipher cipher = Cipher.getInstance("AES");
    if (mode == Cipher.ENCRYPT_MODE) {
        cipher.init(Cipher.ENCRYPT_MODE, key);
        CipherInputStream cis = new CipherInputStream(is, cipher);
        doCopy(cis, os);/*  w  w w. j  a  v a  2s  . com*/
    } else if (mode == Cipher.DECRYPT_MODE) {
        cipher.init(Cipher.DECRYPT_MODE, key);
        CipherOutputStream cos = new CipherOutputStream(os, cipher);
        doCopy(is, cos);
    }
}

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From source file:it.doqui.index.ecmengine.business.personalization.encryption.content.EncryptingContentWriterDecorator.java

public OutputStream getContentOutputStream() throws ContentIOException {
    logger.debug("[EncryptingContentWriterDecorator::getContentOutputStream] BEGIN");

    IvParameterSpec iv = null;// w ww . j a v a2 s . co  m

    try {
        Cipher cipher = null;
        try {
            cipher = Cipher.getInstance(CryptoTransformationSpec.buildTransformationString(transformationSpec),
                    "SunJCE");
        } catch (NoSuchProviderException e) {
            logger.warn(
                    "[EncryptingContentWriterDecorator::getContentOutputStream] Unknown provider \"SunJCE\". Using default...");
            cipher = Cipher.getInstance(CryptoTransformationSpec.buildTransformationString(transformationSpec));
        }

        if (transformationSpec.getMode() != null && !transformationSpec.getMode().equalsIgnoreCase("ECB")) {
            iv = new IvParameterSpec(transformationSpec.getIv());
            cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);
        } else {
            cipher.init(Cipher.ENCRYPT_MODE, secretKey);
        }

        logger.debug("[EncryptingContentWriterDecorator::getContentOutputStream] "
                + "Cipher initialized: ENCRYPT - " + cipher.getProvider() + " - " + cipher.getAlgorithm());

        CipherOutputStream cos = new CipherOutputStream(writer.getContentOutputStream(), cipher);

        return cos;
    } catch (NoSuchPaddingException e) {
        logger.warn("[EncryptingContentWriterDecorator::getContentOutputStream] Invalid padding: "
                + transformationSpec.getPadding());
        throw new EncryptionRuntimeException("Invalid padding: " + transformationSpec.getPadding(), e);
    } catch (NoSuchAlgorithmException e) {
        logger.warn("[EncryptingContentWriterDecorator::getContentOutputStream] Invalid algorithm: "
                + transformationSpec.getAlgorithm());
        throw new EncryptionRuntimeException("Invalid algorithm: " + transformationSpec.getAlgorithm(), e);
    } catch (InvalidKeyException e) {
        logger.warn("[EncryptingContentWriterDecorator::getContentOutputStream] Invalid key!");
        throw new EncryptionRuntimeException("Invalid key!", e);
    } catch (InvalidAlgorithmParameterException e) {
        logger.warn("[EncryptingContentWriterDecorator::getContentOutputStream] Invalid algorithm parameter: "
                + iv);
        throw new EncryptionRuntimeException("Invalid algorithm parameter: " + iv, e);
    } finally {
        logger.debug("[EncryptingContentWriterDecorator::getContentOutputStream] END");
    }
}

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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  av a 2  s.com
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:com.doplgangr.secrecy.FileSystem.Vault.java

public String addFile(final Context context, final Uri uri) {
    String filename = uri.getLastPathSegment();
    try {//from ww w.  j  a  v a2  s .  c om
        String realPath = getPath(context, uri);
        Util.log(realPath, filename);
        filename = new java.io.File(realPath).getName();
        // If we can use real path, better use one.
    } catch (Exception ignored) {
        // Leave it.
    }
    if (!filename.contains("_thumb") && !filename.contains(".nomedia")) {
        ContentResolver cR = context.getContentResolver();
        MimeTypeMap mime = MimeTypeMap.getSingleton();
        String type = mime.getExtensionFromMimeType(cR.getType(uri));
        if (type != null)
            filename = Base64Coder.encodeString(FilenameUtils.removeExtension(filename)) + "." + type;
    }
    InputStream is = null;
    OutputStream out = null;
    try {
        InputStream stream = context.getContentResolver().openInputStream(uri);
        java.io.File addedFile = new java.io.File(path + "/" + filename);
        addedFile.delete();
        addedFile.createNewFile();
        is = new BufferedInputStream(stream);
        byte buffer[] = new byte[Config.bufferSize];
        int count;
        AES_Encryptor enc = new AES_Encryptor(key);
        out = new CipherOutputStream(new FileOutputStream(addedFile), enc.encryptstream());
        while ((count = is.read(buffer)) != -1)
            out.write(buffer, 0, count);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            if (is != null) {
                is.close();
            }
            if (out != null) {
                out.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    return filename;
}

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From source file:TripleDES.java

/**
 * Use the specified TripleDES key to encrypt bytes from the input stream
 * and write them to the output stream. This method uses CipherOutputStream
 * to perform the encryption and write bytes at the same time.
 *//* w  ww  .  ja v  a2s. c  o m*/
public static void encrypt(SecretKey key, InputStream in, OutputStream out)
        throws NoSuchAlgorithmException, InvalidKeyException, NoSuchPaddingException, IOException {
    // Create and initialize the encryption engine
    Cipher cipher = Cipher.getInstance("DESede");
    cipher.init(Cipher.ENCRYPT_MODE, key);

    // Create a special output stream to do the work for us
    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.close();

    // For extra security, don't leave any plaintext hanging around memory.
    java.util.Arrays.fill(buffer, (byte) 0);
}

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