How to use

extractIV

method

in

org.jboss.aerogear.simplepush.util.CryptoUtil

/**
 * Decrypts the content passed-in.
 *
 * @param key the key used for the underlying cypher.
 * @param content the content to decrypted.
 * @return {@code String} the descrypted content as a String.
 * @throws InvalidKeyException
 *
 * @throws Exception
 */
public static String decrypt(final byte[] key, final String content) throws Exception {
  final byte[] decodedContent = new UrlBase64().decode(URLDecoder.decode(content, ASCII.displayName()));
  final byte[] iv = extractIV(decodedContent);
  final byte[] decrypted = new CryptoBox(key).decrypt(iv, extractContent(decodedContent));
  return new String(decrypted, ASCII);
}