I'm building a website and would like to allow users from a specific phpBB forum to log in using their existing forum account. The websites are uncorrelated and I plan on giving access to other phpBB forums at a later time, so I can't share databases or something like that.
Does phpBB have a oauth service provider functionality by default ? I've found many ways to log in to a phpBB using third party providers such as G+ or Facebook, but not the other way around.
phpBB authentication is fully self contained so this won't be possible.