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why do we need authsub when we have oauth?

akula1001
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2 Answers2

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You don't. OAuth is newer. It didn't exist when AuthSub was developed. Google still supports AuthSub, however.

Jonathan
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Google uses AuthSub as well as OAuth. But OAuth is used by many web service providers like Amazon, Facebook, Twitter, etc.

You can find more about OAuth : http://hueniverse.com/oauth/

http://www.socialtechnologyreview.com/articles/oauth-pros-and-cons-oauth

Abdulaziz
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