© Prabath Siriwardena 2020
P. SiriwardenaAdvanced API Securityhttps://doi.org/10.1007/978-1-4842-2050-4_16

The Evolution of Identity Delegation

Prabath Siriwardena1 
San Jose, CA, USA

Identity delegation plays a key role in securing APIs. Most of the resources on the Web today are exposed over APIs. The Facebook API exposes your Facebook wall, the Twitter API exposes your Twitter feed, Flickr API exposes your Flickr photos, Google Calendar API exposes your Google Calendar, and so on. You could be the owner of a certain resource (Facebook wall, Twitter feed, etc.) but not the direct consumer of an API. There may be a third party who wants to access an API on your behalf. For example, a Facebook app may want to import your Flickr photos on behalf ...

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