Open ID and OAuth

In theory, OpenID and OAuth are complimentary.

OpenID helps determine who you are = Authentication.

OAuth defines how you give access to protected data = Authorization

<a rel=”nofollow” title A site that supports OAuth could also support OpenID for authentication, BUT this may not be the case.

OAuth doesn’t mean OpenID will be used for Authentication - it is just an option.

Now do you have an OpenID, probable yes if you have Google email account, or Yahoo email account, or open on some similar OpenID provider.


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