About

The OAuth 2.0 Authorization Framework specification together with the OAuth 2.0 Bearer Token Usage provide a general framework for third-party applications (know as the client) to obtain and use limited access to HTTP resources (page, image,…).

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Specification

Oauth authentication protocols is defined in

• OAuth 1.0 (RFC 5849) - The OAuth 1.0 protocol published as an informational document, was the result of a small ad hoc community effort.
• RFC 6749 The OAuth 2.0 Authorization Framework