OpenID Connect Basic Client Profile

This topic guides you through consuming an OpenID connect basic client profile that is based on authorization code flow. The following steps outline the flow according to the OpenID specification.

The client prepares an authentication request containing the desired request parameters.
The client sends the request to the authorization server.
The authorization server authenticates the end-user.
The authorization server obtains end-user consent/authorization.
The authorization server sends the end-user back to the client with an authorization code.
The client requests a response using the authorization code at the token endpoint.
The client receives a response that contains an ID token and an access token in the response body.
The client validates the ID token and retrieves the end-user's subject identifier.

The following parameters are mandatory and have to be included in the authorization request in order to execute this flow.

Parameter	Description
scope	Specifies the behaviour of the request. Value: "openid"
response_type	Determines which authorization processing flow is to be used, including what parameters are returned from the endpoints used. Value: "code"
client_id	The OAuth 2.0 Client Identifier valid at the authorization server.
redirect_uri/callback_uri	The URI which the authorization server should send the response to.

About oidc-scope-config.xml file

The oidc-scope-config.xml file enables grouping of claims that are bound to a scope value in OpenID Connect (OIDC). By default, the oidc-scope-config.xml file is located inside {IS_Home}/repository/conf/identity directory.

This file can be modified to add custom scopes or claims. When the server starts, these configurations are stored in the registry located in /oidc/. You can customize claims or scopes from here as well. The returned clams from id token or user info endpoint will be decided based on both the requested scopes and requested claims.

When requesting for an OIDC token, you can specify a scope value that is bound to a set of claims in the oidc-scope-config.xml file. When sending that OIDC token to the userinfo endpoint, only the claims that are common to both the oidc-scope-config.xml and the service provider claim configuration, will be returned.

Related Topics

See the Basic Client Profile with Playground topic to try out this flow with the playground sample for OAuth in WSO2 Identity Server.