Refactor Java!

getAuthParameters.java

	private String[] getAuthenticationParameters() throws NoSuchAlgorithmException {
		String[] parameters = { "", "" };
		MessageDigest md = MessageDigest.getInstance("MD5");
		
		String timestamp = String.valueOf(java.lang.System.currentTimeMillis());
		String keyWithTimestamp = timestamp.concat(Constants.RPC.Services.API_KEY);
		
		// Let's generate a hex representation of the hash
		// http://stackoverflow.com/a/421696
		md.reset();
		md.update(keyWithTimestamp.getBytes());
		byte[] digest = md.digest();
		BigInteger bigInt = new BigInteger(1, digest);
		String hashtext = bigInt.toString(16);
		while(hashtext.length() < 32 ) {
		  hashtext = "0" + hashtext;
		}
		
		parameters[0] = timestamp;
		parameters[1] = hashtext;
		
		return parameters;
	}