20 lines
1.7 KiB
Text
20 lines
1.7 KiB
Text
[id="con-oidc_{context}"]
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=== OpenID Connect
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[role="_abstract"]
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link:https://openid.net/connect/[OpenID Connect] (OIDC) is an authentication protocol that is an extension of link:https://datatracker.ietf.org/doc/html/rfc6749[OAuth 2.0].
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OAuth 2.0 is a framework for building authorization protocols and is incomplete. OIDC, however, is a full authentication and authorization protocol that uses the link:https://jwt.io[Json Web Token] (JWT) standards. The JWT standards define an identity token JSON format and methods to digitally sign and encrypt data in a compact and web-friendly way.
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In general, OIDC implements two use cases. The first case is an application requesting that a {project_name} server authenticates a user. Upon successful login, the application receives an _identity token_ and an _access token_.
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The _identity token_ contains user information including user name, email, and profile information. The realm digitally signs the _access token_ which contains access information (such as user role mappings) that applications use to determine the resources users can access in the application.
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The second use case is a client accessing remote services.
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* The client requests an _access token_ from {project_name} to invoke on remote services on behalf of the user.
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* {project_name} authenticates the user and asks the user for consent to grant access to the requesting client.
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* The client receives the _access token_ which is digitally signed by the realm.
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* The client makes REST requests on remote services using the _access token_.
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* The remote REST service extracts the _access token_.
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* The remote REST service verifies the tokens signature.
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* The remote REST service decides, based on access information within the token, to process or reject the request.
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