Configuring OAuth2-OpenID Connect

OAuth 2.0 is an authorization framework that is capable of providing a way for clients to access a resource with restricted access on behalf of the resource owner. OAuth 2.0 is capable of authorizing the flows for web applications, desktop applications, and mobile applications among others.

OpenID Connect is an authentication protocol built on top of OAuth 2.0, which facilitates clients to verify the end-user identity against the authentication performed by an authorization server. At the same time, it provides methods to transfer the end user information through claims.

With OAuth as its base, OpenID Connect allows many types of clients such as web-based clients, mobile clients and javascript clients to verify the users with an authorization server-based authentication.

1. Sign in. Enter your username and password to log on to the Management Console. 
2. Navigate to the Main menu to access the Identity menu. Click Add under Identity Providers. 
   For more information, see Adding and Configuring an Identity Provider.  
3. Fill in the details in the Basic Information section. 
4. Expand the Federated Authenticators section and then the OAuth2/OpenID Connect Configuration form. 
   

5. Fill in the following fields where relevant.

   Prior to this, you need to configure an application for Identity server in the federated authorization server and get the application information such as client ID and secret. For more information, see configuring OAuth2-OpenID Connect single sign-on. 

   Tip

   The Client Id and Client Secret are stored as plain text values by default, and the Client Secret is generally stored as a random number generated using two UUIDs and HMAC-SHA1 hash function, which is known to resist the strongest attack known against HMAC.

   If you want to change the format in which the Client Secret is stored, you need to change the <TokenPersistenceProcessor> property in the <IS_HOME>/repository/conf/identity/identity.xml file, depending on how you want to store tokens. For information on possible values that you can specify as <TokenPersistenceProcessor> based on your requirement, see Supported token persistence processors.

   Once you configure a required token persistence processor, be sure to restart the server for the changes to be applied to WSO2 Identity Server.

   Field	Description	Sample value
   Enable OAuth2/OpenIDConnect	Selecting this option enables OAuth2/OpenID Connect to be used as an authenticator for users provisioned to the Identity Server.	Selected
   Default	Selecting the Default check box signifies that the OAuth2/OpenID Connect credentials are the main/default form of authentication. This removes the selection made for any other Default checkboxes for other authenticators.	Selected
   Authorization Endpoint URL	This is a standard OAuth Authorization Endpoint URL of the federated IDP.	https://localhost:9443/oauth2/authorize/
   Token Endpoint URL	This is a standard OAuth Token Endpoint URL of the federated IDP.	https://localhost:9443/oauth2/token/
   Client Id	Client ID of the application you registered in the IDP for Identity server.	1421263438188909
   Client Secret	Client Secret of the application you registered in the IDP for Identity server. Click the Show button to view the value you enter.	12ffb4dfb2fed67a00846b42126991f8
   Callback URL	This is the URL to which the browser should be redirected after the authentication is successful. It should be the commonauth endpoint of Identity server	https://localhost:9443/commonauth
   OpenID Connect User ID Location	Select whether the User ID is found in the 'sub' attribute that is sent with the OpenID Connect request or if it is found among claims.	User ID found in 'sub' attribute
   Additional Query Parameters	This is necessary if you are connecting to another Identity Server or application. Sometimes extra parameters are required by this IS or application so these can be specified here.	paramName1=value1