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This page provides documentation on integrating an Identity Provider (IdP) with Unique's authentication system, enabling a seamless and secure SSO experience for the users. Unique uses Zitadel as its Identity and Access Management (IAM) solution and various IdPs can be connected to it for allowing users to login via Single Sign-On.



Supported Identity Providers

Unique supports all the IDPs that Zitadel supports in the version that is deployed on the environment where SSO will be setup. The list of supported identity providers can be found in Zitadel’s documentation in the “Configuring IdP Providers” section.

This documentation includes a guide for setting up SSO with Microsoft Entra ID, Generic OIDC and SAML, and will be expanded in the future with guides for other providers as needed.

Microsoft Entra ID (OIDC)

Create an app registration

An App Registration needs to be created in Microsoft Azure. This can be done in Azure under App registrations > New registrations.

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Configure the following:

  • Choose a name (e.g.: “Unique FinanceGPT”)

  • Select who should have access to this application

  • Redirect URL → select “Web” and enter the callback URL for the environment you’re running on

Redirect URL is environment specific

  • Multitenant

    • https://id.unique.app/ui/login/login/externalidp/callback

  • Single tenant

    • https://id.<your-tenant-name>.unique.app/ui/login/login/externalidp/callback

  • Customer managed tenant

    • https://<custom-unique-zitadel-url>/ui/login/login/externalidp/callback

Authentication

After the app registration has been created, navigate to the “Authentication” section and make sure the “ID tokens” setting is selected. This is to ensure that the ID token is issued and sent along when a user uses SSO to login to Unique.

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Token configuration

Next navigate to the “Token configuration” section and add necessary claims to the token. This is to ensure that the needed claims are sent on the ID token.

If you want to be able to sync your user groups from Azure to Unique, make sure to also add the groups claim as shown in the second screenshot below. What kind of groups you want to include on the groups claim is ultimately up to you. Unique recommends to include only the groups assigned to the application in order to have more control over what groups are synced and avoid exceeding the limit on the number of groups that can be included on the ID token.

Screenshot 2024-05-29 at 11.13.01-20240529-091403.pngScreenshot 2024-05-29 at 13.28.00-20240529-112901.png

Certificates & secrets

After the application has been registered and configured, create a Client Secret by navigating to “Certificates & secrets” and copy the value of the secret. The secret is only visible once and is needed in order to setup SSO with Unique.

app-registration-client-secret.png

Required information for setting up SSO

Now all the information required to setup SSO for the Unique solution using Microsoft Entra ID (OIDC) is available.

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These are the required values that are needed to setup SSO.

  • Client ID - (found under “Application (client) ID”)

  • Client Secret - (copied after creation)

  • Tenant ID - (found under “Directory (tenant) ID”)

If you are running on a Unique managed environment (Multi- or Single-tenant), then this is all you need. Provide these values to Unique in a secure way (sensitive client credentials) and Unique will take care of enabling SSO for your organization.

SAML

Zitadel is able to connect to any identity provider that supports SAML. SAML can even be used in a closed network not available from the internet.

Prerequisites

You need to register a new client with your SAML provider and provide us with either the Metadata URL or the Metadata XML. In case of an internal network not reachable from the internet only the Metadata XML is possible.

How to setup Okta SAML as an example you can check here:

https://zitadel.com/docs/guides/integrate/identity-providers/okta-saml#okta-configuration

On the multitenant system we additionally need the E-Mail domain that the users will be using to login.

Configuring Zitadel

On the settings tab you need to ✅ Allow External Login and you need to remove all 2FA methods and (error) Disable Username and password. The only ✅ that should be checked is for external login!

Then create a SAML SP Identity Provider. Give it a name and either paste the Metadata XML in base64 encoded form into the Metadata XML field, or give the Metadata URL in the respective field.

Choose SAML_BINDING_POST and activate:

  • ✅ Signed Request

  • ✅ Automatic Creation

  • ✅ Automatic Update

  • ✅ Account creation allowed

Do not forget to activate the new Identity Provider with the ✅ icon. Account linking should never be activated for security reasons.

Configuring SAML provider with Zitadel metadata

After configuring the SAML SP Identity Provider click on it again and check the URL. It will end with a sequence of numbers ui/console/org/provider/saml/<SAML-PROVIDER-ID>. Copy the SAML-PROVIDER-ID for the next step (the numbers).

Zitadel documentation claims that you see the metadata URLs after creating the provider, but we never saw this screen, so the only reliable way is to copy the provider ID from the URL.

If Zitadel is reachable from your SAML instance you can configure the following URL as Metadata URL:

  • Multitenant

    • https://id.unique.app/idps/<SAML-PROVIDER-ID>/saml/metadata

  • Single tenant

    • https://id.<your-tenant-name>.unique.app/idps/<SAML-PROVIDER-ID>/saml/metadata

  • Customer managed tenant

    • https://<custom-unique-zitadel-url>/idps/<SAML-PROVIDER-ID>/saml/metadata

If it is not reachable you either get the Metadata XML from us or you can download it from the respective URL above and configure it in your SAML IDP.

Zitadel is using signing and encryption for the SAML communication, and we configured Zitadel to only accept signed requests. There might be additional steps necessary in your SAML provider to work correctly with signing and encryption.


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