OpenID Connect and OAuth 2.0 configuration

This guide outlines the configuration of SecureAuth IdP as an OpenID Connect Provider and OAuth 2.0 Authorization Server.

Authorization code

Obtains the authorization code from the authorization endpoint and all tokens are returned from the token endpoint
Returns an authorization code that can be exchanged for an identity token and / or access token
Requires client authentication using a client ID and secret to retrieve tokens from the back end
Permits long lived access through the use of refresh tokens

Implicit

Obtains all tokens from the authorization endpoint
Requests tokens without explicit client authentication
Uses the redirect URI to verify the client identity
Is not suitable for long lived access tokens; refresh tokens not supported
'token', 'id_token', 'id_token token'

Hybrid

Obtains the authorization code and tokens from the authorization endpoint, and request tokens from the token endpoint
Lets the client make immediate use of an identity token and optionally retrieve an authorization code via one round trip to the authentication server
Used for long lived access via the use of refresh tokens
Clients using this flow must be able to maintain a secret
'code id_token', 'code id_token token', 'code token'

Authorization code

Obtains access tokens and refresh tokens
Optimized for server-side applications in which source code is not publicly exposed
Is a redirection-based flow; application interacts with the user-agent (user's web browser) and receives API authorization codes routed through the user-agent

Implicit

Obtains access tokens; refresh tokens not supported
Optimized for public clients operating a particular redirection URI; client secret confidentiality not guaranteed
Is a redirection-based flow; access token is given to the user-agent which passes it to the application (identity of the application is not authenticated)

Resource owner passsword credentials

Used as an authorization grant to obtain an access token; user provides service credentials (username and password) directly to the application for an access token
Eliminates the need for the client to store the resource owner credentials by exchanging credentials for a long-lived access token or refresh token
Should only be used on an application trusted by the user (user's desktop OS, or an application owned by the service)

Client credentials

Used as an authorization grant when the authorization scope is limited to protected resources under control of the client or the authorization server
Tokens are requested on behalf of a client, not a user, and requests are sent to the token endpoint

Refresh token

Used for obtaining a new access token after the original access token expires or becomes invalid
Issued to the client by the authorization server
Lets users request a fresh access token from the authorization server for long-lived access to APIs

Authorization endpoint	Resides on the authorization server on which the resource owner authenticates for access to the client application.	https://.../secureauth1/secureauth.aspx
Token endpoint	Resides on the authorization server on which the client application exchanges information for an access token.	https://.../secureauth1/oidctoken.aspx
UserInfo endpoint	Used to retrieve a user's identity information.	https://.../secureauth1/oidcuserinfo.aspx
End session endpoint	Used to trigger a user's single sign-out by redirecting the user's browser to the end session URL.	https://.../secureauth1/oidcendsession.aspx
Check session iFrame endpoint	Used to verify if the user's session on a server using iFrames has ended so necessary cleanup can be performed.	https://.../secureauth1/oidcchecksession.aspx
Discovery endpoint	Used to retrieve the discovery document containing information clients might use for token validation.	https://.../secureauth1/.well-known/openid-configuration
Token introspection endpoint	Lets the holder of an access token request token verification information from the issuing provider.	https://.../secureauth1/OAuthintrospect.aspx
Token revocation endpoint	Revokes user access tokens and refresh tokens.	https://.../secureauth1/OAuthRevocate.aspx

Prerequisites

SecureAuth IdP version 9.1 or later
Knowledge of OpenID Connect and OAuth 2.0
Configure the Data tab in the SecureAuth IdP Web Admin with a directory integration

SecureAuth IdP configuration

Once the directory integration is successful, go to the Data tab.
In the Profile Fields section, map the attributes from the profile fields to the SecureAuth IdP Profile Properties that will be used as OpenID Connect Claims.
The standard OpenID Connect Claims supported by SecureAuth IdP can be used as a reference.
Save the configuration.
Go to the Post Authentication tab.
In the Post Authentication section, set the following:
Authenticated User Redirect
Set to OpenID Connect/OAuth2.

In the OpenID Connect / OAuth 2.0 - Settings section, set the following:

Enabled

Set security enhancement to enable (True) or disable (False) OpenID Connect and OAuth2 endpoints.

Issuer

Set the value used in the 'iss' claim.

Signing Algorithm

Set the signing algorithm used for signing JSON web tokens as one of the following:

RSA SHA256 uses the X.509 certificate selected for Signing Cert
HMAC SHA256 uses the client secret for signing

Signing Cert

Certificate used to sign JSON Web Tokens produced by SecureAuth IdP.

Authorization Code Lifetime

Length of time for Authorization Code lifetime in minutes.

Access Token Lifetime

Length of time for Access Token lifetime in hours.

The system is set with a default clock skew at 5 minutes (see https://docs.microsoft.com/en-us/dotnet/api/microsoft.identitymodel.tokens.tokenvalidationparameters.defaultclockskew?view=azure-dotnet).

For example, if you set the Access Token Lifetime with a value of .25 for an intended token expiration at 15 minutes, it will actually expire at 20 minutes due to the default clock skew.

Refresh Token Lifetime

Length of time for Refresh Token lifetime in hours.

Auto Accept User Consent

When set to True, users are not prompted to grant consent to a client for a given request. Acceptance is assumed granted and tokens are issued.

Enable User Consent Storage

When set to True, user consent granted to a client is stored as an encrypted and compressed string value in the attribute specified at Consent Storage Attribute.

Consent Storage Attribute

Data store attribute mapped to profile Property which saves the user's consent.

Note

The Consent Storage Attribute must be a Single-Value directory string attribute type (for example, houseIdentifier, adminDescription).

A single consent from the OIDC client starts at ~277 bytes, which means the attribute needs a minimum value of 1.

Each additional consent from an OIDC client increments by ~60 bytes.

The maximum supported value for the attribute assigned to store the User Consent depends on how many OIDC clients your organization expects end users to connect to.

Example:

"houseIdentifier" has a maximum value of 32768 bytes. so it could theoretically store 542 different consents.

(32768 minus 277, then divided by 60 = 542)

In the OpenID Connect / OAuth 2.0 - Scopes section, by default, a set of OpenID Connect scopes are preconfigured and required in certain OpenID Connect flows. To add a scope, click Add Scope and set the following:

Scope	Value passed to the endpoints during authorization requests. This value must be URL-safe and not include spaces.
Name	User-friendly display name in list of scopes from which access is requested on the user consent page.
Description	User-friendly description of scope in list of scopes from which access is requested on the user consent page.
Discoverable	When the check box is selected, the associated scope value is listed at the Discovery Configuration endpoint.

Save the configuration.
In the OpenID Connect / OAuth 2.0 - Clients section, click Add Client.

In OpenID Connect / OAuth 2.0 - Client Details, set the following:

Enabled	Security enhancement to enable (True) or disable (False) the client.
Name	User-friendly name of the client requesting access to display on the user consent page.
Client ID	Automatically created unique identifier of the client.
Client Secret	Automatically created unique secret of the client.
JSON Web Encryption	Indicate whether the JSON web encryption settings for the client is Enabled or Disabled.
JSON Web Key URI	When JSON Web Encryption is enabled for the client, enter the web key URL.
*Allowed Flows* - To indicate which flows the client is allowed to use, set to True or False
Authorization Code	Indicate whether client can use the Authorization Code flow.
Implicit	Indicate whether client can use the Implicit flow.
Hybrid	Indicate whether client can use the Hybrid flow.
Client Credentials	Indicate whether client can use the Client Credentials flow.
Resource Owner	Indicate whether client can use the Resource Owner flow.
Refresh Token	Indicate whether client can use the Refresh Token flow.
Introspection	Indicate whether client can use the Introspection flow.
Revocation	Indicate whether client can use the Revocation flow.

Save the configuration.
OPTIONAL. In the OpenID Connect / OAuth 2.0 - Client Scope Restrictions section, to restrict a client from using one or more of the defined Scopes, click Add Restricted Scope and add the Scope value.
OPTIONAL. In the OpenID Connect / OAuth 2.0 - Client Redirect URIs section, to let a client use the Authorization Code or Implicit flows, click Add Redirect URI and add the allowed URI value (must include https)
Save your edits before leaving the Clients page.
In the Open ID Connect ID Token Claims section, do the following:
1. Map the Claim to the Profile Property. A value of Unmapped indicates the claim will not be included in the produced JSON Web Token.
2. To list the associated Claim at the Discovery Configuration endpoint, select the Discoverable check box.
In the Open ID Connect ID Token Custom Claims section, to create Custom Claims, click Add Custom Claim and set the following:
Claim
Provide unique name for the Custom Claim.
Profile Property
Select a Profile Property to complete the mapping.
Note
SecureAuth supports creating Custom Claims to include in the 'id_token' for OpenID Connect flows.
Claim names cannot include spaces.
Save the configuration.