r has to integrate the SSO service in their forms and that are
OpenID is an Open standard that describes how users can be Authenticated in a decentralized manner, obviating the need for services to provide their own ad hoc systems and allowing users to consolidate their `Digital identities’. The OpenID protocol does not rely on a central authority to authenticate a user’s identity. Moreover, neither services nor the OpenID standard may mandate a specific means by which to authenticate users, allowing for approaches ranging from the common (such as passwords) to the novel (such as Smart Cards or Biometrics). The term OpenID may also refer to an ID as specified in the OpenID standard; these IDs take the form of a unique URL, and are managed by some ‘OpenID provider’ that handles authentication. What is your OPENID, if you are using one of the service of famous providers are:
Google.com – google.com/profiles/username
Yahoo.com – me.yahoo.com
AOL – openid.aol.com/screenname
Blogger – username.blogger.com or blogid.blogspot.com
Myopenid.com – username.myopenid.com
LiveJournal – username.livejournal.com
Wordpress – username.wordpress.com
There are many more, which can’t be provided here, to know the complete list kindly visit openid.net. This simply means if you are using any one of the service of above mentioned then you can login any website where Openid service has been accepted as login system.
OAuth (Open Authorization) is an Open Standard for Authorization. It allows users to share their private resources (e.g. photos, videos, contact lists) stored on one site with another site without having to hand out their credentials, typically username and password. OAuth allows users to hand out tokens instead of credentials to their data hosted by a given service provider. Each token grants access to a specific site (e.g. a video editing site) for specific resources (e.g. just videos from a specific album) and for a defined duration (e.g. the next 2 hours). This allows a user to grant a third-party site access to their information stored with another service provider, without sharing their access permissions or the full extent of their data. For more about implementation kindly visit oauth.net.
Hybrid – lets web developers combine a OpenID request with an OAuth authentication request. This extension is useful for web developers who use both OpenID and OAuth, particularly in that it simplifies the process for users by requesting their approval once instead of twice.