Understanding Claims Based Authentication

SharePoint 2010 introduces the concept of claims based authentication, which involves authentication through the use of claims, tokens, and identity providers. On a high level in claims based authentication a user makes a claim about his identity, which is validated by someone.

Consider a real life scenario where someone is trying to prove her identity. She could provide various claims such as a passport, office identity card, or driver’s license. These are strong proofs of that person’s identity as they have been issued by the government or the person’s employer. If you trust the government and the employer you will have no problem accepting that person’s identity. On the other hand if that person shows ...

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