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Open Source Identity Management Patterns and Practices Using OpenAM 10.x by Waylon Kenning

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Understanding OATH and how it relates to OpenAM

OATH is the method used to do two factor authentication in OpenAM. Because it is a common standard, there are many OATH token generators available, including clients for iPhone and Android.

OATH can either use a static token that increments each time it is used (known as HOTP), or a token that changes after a predetermined amount of time (known as TOTP). A popular example of a TOTP token generator is the Google Authenticator.

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