Example usage for org.apache.commons.codec.binary Base64 Base64

Introduction

In this page you can find the example usage for org.apache.commons.codec.binary Base64 Base64.

Prototype

public Base64() 

Source Link

Document

Creates a Base64 codec used for decoding (all modes) and encoding in URL-unsafe mode.

Usage

From source file:com.neovisionaries.security.DigestTest.java

@Test
public void test9() {
    String expected = "KuAUcjF9GTWoR5fsGYOuJD/Gqig=";
    String actual = sha1().update("Hello, world.").digestAsString(new Base64());

    assertEquals(expected, actual);/*from w  ww  . ja v  a 2 s.c  om*/
}

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From source file:example.DecrypterException.java

/**
 * Performs the decryption algorithm.//ww w.j  av  a2s. c om
 *
 * This method decrypts the ciphertext using the encryption key and verifies
 * the integrity bits with the integrity key. The encrypted format is:
 * {initialization_vector (16 bytes)}{ciphertext}{integrity (4 bytes)}
 * https://developers.google.com/ad-exchange/rtb/response-guide/decrypt-
 * hyperlocal,
 * https://developers.google.com/ad-exchange/rtb/response-guide/decrypt
 * -price and https://support.google.com/adxbuyer/answer/3221407?hl=en have
 * more details about the encrypted format of hyperlocal, winning price,
 * IDFA, hashed IDFA and Android Advertiser ID.
 */
public static byte[] decrypt(byte[] ciphertext, SecretKey encryptionKey, SecretKey integrityKey)
        throws DecrypterException {
    try {
        // Step 1. find the length of initialization vector and clear text.
        final int plaintext_length = ciphertext.length - INITIALIZATION_VECTOR_SIZE - SIGNATURE_SIZE;
        if (plaintext_length < 0) {
            throw new RuntimeException("The plain text length can't be negative.");
        }
        System.out.println(Arrays.toString(ciphertext));
        System.out.println(byte2hex(ciphertext));
        System.out.println(ciphertext.length);
        System.out.println(plaintext_length);

        byte[] iv = Arrays.copyOf(ciphertext, INITIALIZATION_VECTOR_SIZE);

        // Step 2. recover clear text
        final Mac hmacer = Mac.getInstance("HmacSHA1");
        hmacer.init(encryptionKey);

        final int ciphertext_end = INITIALIZATION_VECTOR_SIZE + plaintext_length;
        final byte[] plaintext = new byte[plaintext_length];
        boolean add_iv_counter_byte = true;
        for (int ciphertext_begin = INITIALIZATION_VECTOR_SIZE, plaintext_begin = 0; ciphertext_begin < ciphertext_end;) {
            System.out.println("=====> FOR:");
            hmacer.reset();
            hmacer.init(encryptionKey);
            System.out.println("iv: " + byte2hex(iv));
            final byte[] pad = hmacer.doFinal(iv);
            System.out.println("pad: " + byte2hex(pad) + "  len(pad): " + pad.length);
            Base64 encoder = new Base64();
            String pad_base64 = new String(encoder.encode(pad));
            System.out.println("pad Base64: " + pad_base64);

            int i = 0;
            while (i < BLOCK_SIZE && ciphertext_begin != ciphertext_end) {
                plaintext[plaintext_begin++] = (byte) (ciphertext[ciphertext_begin++] ^ pad[i++]);
            }

            if (!add_iv_counter_byte) {
                final int index = iv.length - 1;
                add_iv_counter_byte = ++iv[index] == 0;
            }

            if (add_iv_counter_byte) {
                add_iv_counter_byte = false;
                iv = Arrays.copyOf(iv, iv.length + 1);
            }
        }
        System.out.println("plaintext: " + byte2hex(plaintext));

        // Step 3. Compute integrity hash. The input to the HMAC is
        // clear_text
        // followed by initialization vector, which is stored in the 1st
        // section
        // or ciphertext.
        hmacer.reset();
        hmacer.init(integrityKey);
        hmacer.update(plaintext);
        hmacer.update(Arrays.copyOf(ciphertext, INITIALIZATION_VECTOR_SIZE));
        final byte[] computedSignature = Arrays.copyOf(hmacer.doFinal(), SIGNATURE_SIZE);
        final byte[] signature = Arrays.copyOfRange(ciphertext, ciphertext_end,
                ciphertext_end + SIGNATURE_SIZE);
        if (!Arrays.equals(signature, computedSignature)) {
            throw new DecrypterException("Signature mismatch.");
        }
        return plaintext;
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException("HmacSHA1 not supported.", e);
    } catch (InvalidKeyException e) {
        throw new RuntimeException("Key is invalid for this purpose.", e);
    }
}

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From source file:com.ning.metrics.collector.TestPerformance.java

private static String createThriftPayload() throws TException {
    ArrayList<ThriftField> data = new ArrayList<ThriftField>();
    data.add(ThriftField.createThriftField("Fuu", (short) 1));
    data.add(ThriftField.createThriftField(true, (short) 2));
    data.add(ThriftField.createThriftField(3.1459, (short) 3));
    return String.format("%s:%s", new DateTime().getMillis(),
            new Base64().encodeToString(new ThriftFieldListSerializer().createPayload(data)));
}

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From source file:jlib.xml.XMLUtil.java

public static String encode64AsString(String cs) {
    Base64 base64 = new Base64();
    byte[] arrBytes = cs.getBytes();
    byte[] tOut = base64.encode(arrBytes);
    String csOut = new String(tOut);
    return csOut;
}

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From source file:com.mb.framework.util.SecurityUtil.java

/**
 * /*from ww  w. java  2  s .  c  o m*/
 * This method is used for decrypt by using Algorithm - AES/CBC/PKCS5Padding
 * 
 * @param String
 * @return String
 * @throws Exception
 */
@SuppressWarnings("static-access")
public static String decryptAESPBKDF2(String encryptedText) throws Exception {

    byte[] saltBytes = salt.getBytes("UTF-8");
    byte[] encryptedTextBytes = new Base64().decodeBase64(encryptedText);

    // Derive the key
    SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    PBEKeySpec spec = new PBEKeySpec(SECRET_KEY.toCharArray(), saltBytes, pswdIterations, keySize);

    SecretKey secretKey = factory.generateSecret(spec);
    SecretKeySpec secret = new SecretKeySpec(secretKey.getEncoded(), "AES");

    // Decrypt the message
    Cipher cipher = Cipher.getInstance(AES_CBC_PKCS5PADDING_ALGO);
    cipher.init(Cipher.DECRYPT_MODE, secret, new IvParameterSpec(ivBytes));

    byte[] decryptedTextBytes = null;
    try {
        decryptedTextBytes = cipher.doFinal(encryptedTextBytes);
    } catch (IllegalBlockSizeException e) {

        LOGGER.error("error " + e.getMessage());
    } catch (BadPaddingException e) {
        LOGGER.error("error " + e.getMessage());
    }

    return new String(decryptedTextBytes);
}

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From source file:com.forsrc.utils.MyRsa2Utils.java

/**
 * Gets private key.//  w ww .  j  a va 2  s  . com
 *
 * @param key the key
 * @return the private key
 * @throws RsaException the rsa exception
 */
public static PrivateKey getPrivateKey(String key) throws RsaException {
    byte[] keyBytes;
    try {
        keyBytes = (new Base64()).decode(key);
    } catch (Exception e) {
        throw new RsaException(e);
    }
    PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(keyBytes);
    KeyFactory keyFactory = null;
    try {
        keyFactory = KeyFactory.getInstance(RsaKey.ALGORITHM);
    } catch (NoSuchAlgorithmException e) {
        throw new RsaException(e);
    }
    PrivateKey privateKey = null;
    try {
        privateKey = keyFactory.generatePrivate(keySpec);
    } catch (InvalidKeySpecException e) {
        throw new RsaException(e);
    }
    return privateKey;
}

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From source file:com.igormaznitsa.jhexed.swing.editor.ui.exporters.SVGImageExporter.java

private static String svgToImageTag(final String id, final SVGImage svgImage, final float cellWidth,
        final float cellHeight, final boolean scale) {
    final String baseEncoded = new Base64().encodeAsString(svgImage.getImageData());
    final StringBuilder result = new StringBuilder("<image id=\"").append(id).append('\"');

    final String xscale = scale ? num2str(cellWidth / svgImage.getSVGWidth()) : null;
    final String yscale = scale ? num2str(cellHeight / svgImage.getSVGHeight()) : null;

    result.append(" xlink:href=\"data:image/svg+xml;base64,").append(baseEncoded).append('\"');
    result.append(" width=\"").append(num2str(svgImage.getSVGWidth())).append("\" height=\"")
            .append(svgImage.getSVGHeight()).append('\"');
    if (scale) {//w  w  w  . j a v a  2  s . c  o m
        result.append(" transform=\"scale(").append(xscale).append(',').append(yscale).append(")\"");
    }

    result.append("/>");
    return result.toString();
}

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From source file:ch.entwine.weblounge.maven.MyGengoI18nImport.java

private URLConnection getMyGengoConn() {
    // Request MyGengo i18n file
    URLConnection conn;//from   w  w  w  . ja va 2  s.c  o  m
    try {
        conn = myGengoUrl.openConnection();
        if (StringUtils.isNotBlank(myGengoUsername) && StringUtils.isNotBlank(myGengoPassword))
            conn.setRequestProperty("Authorization", "Basic "
                    + (new Base64()).encode((myGengoUsername + ":" + myGengoPassword).getBytes()).toString());
    } catch (IOException e) {
        log.error("Error getting zip file from myGengo.");
        return null;
    }
    return conn;
}

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From source file:com.ligadata.Utils.EncryptDecryptUtils.java

/**
 * Encode(Base64 encoding) given byte array to a string
 * //from   ww  w.j  ava 2 s  . c o m
 * @param bytes
 *          : an array of bytes corresponding to string being encoded
 * @return String
 * @throws java.lang.Exception
 */

public static String encode(byte[] bytes) {
    try {
        Base64 base64 = new Base64();
        String encoded = new String(base64.encode(bytes));
        return encoded;
    } catch (Exception e) {
        logger.error("Failed to encode a  byte array", e);
        throw e;
    }
}

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From source file:com.ooyala.api.OoyalaAPI.java

/**
 * Constructor with keys//from   w w w . j  ava 2 s .c  o  m
 * @param apiKey The API key
 * @param secretKey The secret key
 */
public OoyalaAPI(String _apiKey, String _secretKey) {
    secretKey = _secretKey;
    apiKey = _apiKey;
    baseURL = "https://api.ooyala.com/v2/";
    expirationWindow = 15;
    roundUpTime = 300;
    new Base64();
    contentType = "application/json";
}

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