anyclass.java

private static String encryptString(String string) {
   try {
 if (initKeyStore() && initCipher() && initKey() && initCipherMode(Cipher.ENCRYPT_MODE)) {
           byte[] bytes = sCipher.doFinal(string.getBytes());
           return Base64.encodeToString(bytes, Base64.NO_WRAP);
       }
   } catch (IllegalBlockSizeException | BadPaddingException e) {
       e.printStackTrace();
   }
   return null;
}