The OAuth logo, designed by Chris Messina.
The logo is designed to meet the following criteria:
a robust and bold look;
something that looks polished;
something that isn't overly concerned with locks and keys or "security metaphors";
and something that is easily identifiable and unique and doesn't blend in with other Web 2.0 logos;
As well, unlike the OpenID logo, the OAuth logo is unlikely to be seen by regular users and is primarily to identify the community and group.
The typeface is Gotham Black.