SSL for my localhost

I use google oauth2 in my app. I have my site secured by RapidSSL. It works fine. I am also trying to develop on my localhost. The error I get on my localhost is "OAuth2 request failed: Service responded with error:". I think that oauth2 requires a host to be ssl. Has anyone run across this? Where can I get a quick, cheap, ssl cert to use on my local Apache on localhost?

proof that an old dog can learn new tricks