Android - Encrypt passwords with HMAC SHA512

hmacsha512.java

/**
 * You have to use: compile 'commons-codec:commons-codec:1.4'
 * as dependency
 */
public static String HMACSHA512(String value, String securityHmac) throws UnsupportedEncodingException,
      NoSuchAlgorithmException, InvalidKeyException {

  SecretKeySpec key = new SecretKeySpec((securityHmac).getBytes("UTF-8"), "HmacSHA512");
  Mac mac = Mac.getInstance("HmacSHA512");
  mac.init(key);
  byte[] bytes = mac.doFinal(value.getBytes());
  return Hex.encodeHexString(bytes);
}