Authenticating with Stack Overflow programmatically

I would like to add up and down voting to my iPhone application - MyStacks. for this I need the to be able to authenticate the user with Stack Overf开发者_JS百科low.

I'm look at adapting the Twitter-OAuth-iPhone library. However the problem I have is obtaining the consumer and secret key. to use OAuth, do I need to obtain a different key for each provider? In order to obtain a consumer key from Google the application needs to have a domain name, but this being an iPhone app of course I don't have one. Does this mean that I can't use OAuth?

Is there any other way to programmatically authenticate with Stack Overflow?

Found the solution, on the iPhone its surprisingly simple. Just embed a UIWebView which opens up the SO login page and then once users authenticates themselves the required cookies will be saved using NSHTTPCookieStorage so you can simply use NSURLRequest as normal.