Example usage for javax.crypto CipherInputStream CipherInputStream

Introduction

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

Prototype

public CipherInputStream(InputStream is, Cipher c) 

Source Link

Document

Constructs a CipherInputStream from an InputStream and a Cipher.

Usage

From source file:de.serverfrog.pw.crypt.SerpentUtil.java

public static CipherInputStream getInputStream(InputStream os, Key key) throws IOException {
    try {//  ww w .jav a 2  s  .com
        Cipher instance = Cipher.getInstance("Serpent", "BC");
        instance.init(Cipher.DECRYPT_MODE, key);
        return new CipherInputStream(os, instance);
    } catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchProviderException
            | NoSuchPaddingException ex) {
        if (ex.getClass().equals(InvalidKeyException.class)) {
            throw new IOException("Password Wrong");
        }
        Logger.getLogger(SerpentUtil.class.getName()).log(Level.SEVERE, null, ex);
    }
    return null;
}

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From source file:com.intera.roostrap.util.EncryptionUtil.java

private static void encryptOrDecrypt(String encryptionKey, int mode, InputStream is, OutputStream os)
        throws InvalidKeyException, IOException {
    DESKeySpec keySpec = new DESKeySpec(toBytes(encryptionKey));

    SecretKey key = null;//  w ww . j  av  a2  s .  c  o m
    Cipher cipher = null;
    try {
        SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("DES");
        key = secretKeyFactory.generateSecret(keySpec);
        cipher = Cipher.getInstance("DES");

    } catch (Exception e) {
        throw new RuntimeException(e);
    }

    if (mode == Cipher.ENCRYPT_MODE) {
        cipher.init(Cipher.ENCRYPT_MODE, key);
        CipherInputStream cis = new CipherInputStream(is, cipher);
        doCopy(cis, os);
    } 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:Main.java

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
private static String decryptStringImpl(Context context, final String encryptedText) {
    String plainText = null;//from  w  ww  .ja  v  a  2 s . com
    try {
        final KeyStore keyStore = getKeyStore(context);

        PrivateKey privateKey = (PrivateKey) keyStore.getKey(KEY_ALIAS, null);

        String algorithm = ALGORITHM_OLD;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            algorithm = ALGORITHM;
        }
        Cipher cipher = Cipher.getInstance(algorithm);
        cipher.init(Cipher.DECRYPT_MODE, privateKey);

        CipherInputStream cipherInputStream = new CipherInputStream(
                new ByteArrayInputStream(Base64.decode(encryptedText, Base64.DEFAULT)), cipher);

        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        int b;
        while ((b = cipherInputStream.read()) != -1) {
            outputStream.write(b);
        }
        outputStream.close();
        plainText = outputStream.toString("UTF-8");
    } catch (Exception e) {
        e.printStackTrace();
    }
    return plainText;
}

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From source file:com.slimroms.themecore.AssetUtils.java

public static boolean copyAsset(AssetManager assetManager, String fromAssetPath, String toPath, Cipher cipher) {
    InputStream in;/*  w  w  w. j  a va 2  s  .  c  o  m*/
    File parent = new File(toPath).getParentFile();
    if (!parent.exists() && !parent.mkdirs()) {
        Log.d(TAG, "Unable to create " + parent.getAbsolutePath());
    }

    try {
        in = assetManager.open(fromAssetPath);
        if (cipher != null && fromAssetPath.endsWith(".enc")) {
            in = new CipherInputStream(in, cipher);
            if (toPath.endsWith(".enc")) {
                toPath = toPath.substring(0, toPath.lastIndexOf("."));
            }
        }
        String text = IOUtils.toString(in, Charset.defaultCharset());
        Log.d("TEST", "text=" + text);
        copyInputStreamToFile(in, new File(toPath));
        in.close();
        return true;
    } catch (Exception e) {
        e.printStackTrace();
        return false;
    }
}

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From source file:org.sakuli.services.cipher.AesCbcCipher.java

public static byte[] decryptBytes(SecretKey aesKey, byte[] ciphertext) throws SakuliCipherException {
    checkCipherParameters(aesKey, ciphertext);
    final byte[] decrypted;
    try {/*  ww w .  j a  v  a2  s .c o  m*/
        final ByteArrayInputStream bais = new ByteArrayInputStream(ciphertext);

        final Cipher aesCBC = Cipher.getInstance(CBC_ALGORITHM);
        final IvParameterSpec ivForCBC = readIV(aesCBC.getBlockSize(), bais);
        aesCBC.init(Cipher.DECRYPT_MODE, aesKey, ivForCBC);

        final byte[] buf = new byte[1_024];
        try (final CipherInputStream cis = new CipherInputStream(bais, aesCBC);
                final ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
            int read;
            while ((read = cis.read(buf)) != -1) {
                baos.write(buf, 0, read);
            }
            decrypted = baos.toByteArray();
        }
        return decrypted;
    } catch (Exception e) {
        throw new SakuliCipherException(e, "Error during decrypting secret!");
    }
}

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From source file:com.scorpio4.util.io.IOStreamCrypto.java

public CipherInputStream decrypt(InputStream in) throws NoSuchPaddingException, NoSuchAlgorithmException,
        InvalidAlgorithmParameterException, InvalidKeyException {
    final SecretKey key = new SecretKeySpec(bytePassword, cipherSpec);
    final IvParameterSpec IV = new IvParameterSpec(ivBytes);
    final Cipher cipher = Cipher.getInstance(cipherTransformation);
    cipher.init(Cipher.DECRYPT_MODE, key, IV);
    return new CipherInputStream(new Base64InputStream(in), cipher);
}

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From source file:org.orbeon.oxf.main.SecureResource.java

private void view() {
    try {/*from   w  ww  . j a va 2 s.  c  o  m*/
        FileInputStream archiveFile = new FileInputStream(archiveName);
        ZipInputStream zip = new ZipInputStream(new CipherInputStream(archiveFile,
                SecureUtils.getDecryptingCipher(SecureResourceManagerImpl.getPassword(), true)));
        ZipEntry ze;
        while ((ze = zip.getNextEntry()) != null) {
            System.out.println("entry: " + ze.getName());

        }
        zip.close();

    } catch (Exception e) {
        throw new RuntimeException(e);
    }

}

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From source file:org.hardisonbrewing.s3j.FileResponseHandler.java

@Override
public File handleResponse(HttpResponse httpResponse) throws HttpResponseException, IOException {

    System.out.println("  Response Headers");
    HttpUtil.printHeaders(httpResponse);

    HttpUtil.validateResponseCode(httpResponse);

    File file = FileUtils.createTempFile();

    long contentLength = 0;

    HttpEntity entity = null;/*from   w  w w. j av a  2s  .c o  m*/
    InputStream inputStream = null;
    CountingInputStream countingInputStream = null;
    OutputStream outputStream = null;

    try {

        entity = httpResponse.getEntity();

        contentLength = entity.getContentLength();
        validateContentLength(contentLength);

        inputStream = entity.getContent();

        inputStream = new ProgressInputStream(inputStream, contentLength);

        // put this before the cipher so we get the encrypted length
        countingInputStream = new CountingInputStream(inputStream);
        inputStream = countingInputStream;

        if (cipher != null) {
            inputStream = new CipherInputStream(inputStream, cipher);
        }

        outputStream = new FileOutputStream(file);

        IOUtil.copy(inputStream, outputStream);
    } finally {
        IOUtil.close(inputStream);
        EntityUtils.consume(entity);
        IOUtil.close(outputStream);
    }

    long readLength = countingInputStream.getByteCount();
    validateDownloadLength(contentLength, readLength);

    return file;
}

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From source file:CipherSocket.java

public InputStream getInputStream() throws IOException {
    InputStream is = delegate == null ? super.getInputStream() : delegate.getInputStream();
    Cipher cipher = null;/*from   w  w  w . j a  v a 2  s  . co m*/
    try {
        cipher = Cipher.getInstance(algorithm);
        int size = cipher.getBlockSize();
        byte[] tmp = new byte[size];
        Arrays.fill(tmp, (byte) 15);
        IvParameterSpec iv = new IvParameterSpec(tmp);
        cipher.init(Cipher.DECRYPT_MODE, key, iv);
    } catch (Exception e) {
        e.printStackTrace();
        throw new IOException("Failed to init cipher: " + e.getMessage());
    }
    CipherInputStream cis = new CipherInputStream(is, cipher);
    return cis;
}

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From source file:jfs.sync.meta.AbstractMetaStorageAccess.java

protected Map<String, FileInfo> getMetaData(String rootPath, String relativePath) {
    if (directoryCache.containsKey(relativePath)) {
        return directoryCache.get(relativePath);
    } // if/*from w w  w .  j a v a  2s.  com*/
    Map<String, FileInfo> result = new HashMap<>();
    ObjectInputStream ois = null;
    try {
        InputStream inputStream = getInputStream(rootPath, getMetaDataPath(relativePath));
        byte[] credentials = getCredentials(relativePath);
        Cipher cipher = SecurityUtils.getCipher(getCipherSpec(), Cipher.DECRYPT_MODE, credentials);
        inputStream = new CipherInputStream(inputStream, cipher);
        if (LOG.isDebugEnabled()) {
            LOG.debug("getMetaData() reading infos for " + relativePath);
        } // if
        ois = new ObjectInputStream(inputStream);
        Object o;
        while ((o = ois.readObject()) != null) {
            if (o instanceof FileInfo) {
                FileInfo fi = (FileInfo) o;
                if (fi.isDirectory()) {
                    String date;
                    synchronized (FORMATTER) {
                        date = FORMATTER.format(new Date(fi.getModificationDate()));
                    }
                    if (LOG.isDebugEnabled()) {
                        LOG.debug(
                                "getMetaData() " + relativePath + getSeparator() + fi.getName() + ": " + date);
                    } // if
                } // if
                result.put(fi.getName(), fi);
            } // if
        } // while
        ois.close();
    } catch (FileNotFoundException | EOFException e) {
        // empty directory or - who cares?
    } catch (Exception e) {
        if (LOG.isInfoEnabled()) {
            LOG.info("getMetaData() possible issue while reading infos " + e, e);
        } // if
    } finally {
        try {
            if (ois != null) {
                ois.close();
            } // if
        } catch (Exception ex) {
            // who cares?
        } // try/catch
    } // try/catch
    directoryCache.put(relativePath, result);
    return result;
}

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