public static byte[] sha256Byte(String base, String salt) {
	    try{
	        MessageDigest digest = MessageDigest.getInstance("SHA-256");
	        digest.reset();
	        digest.update(salt.getBytes());
	        
	        byte[] hash = digest.digest(base.getBytes("UTF-8"));


	        return hash;
	    } catch(Exception ex){
	       throw new RuntimeException(ex);
	    }
	}