Blogger Widget for Random Posts -- 2

I need code that can be added into a side bar OF A PRIVATE BLOG on Blogger that will show random old posts from the blog. There are lots of widgets out there that will do this for a PUBLIC blog on Blogger, but I need one that works for a PRIVATE blog. Should be similar in style to this: [login to view URL] Freelancer can set up their own private blogger page to test the widget. I can not give access to my blog.