Keycloak SAML Implementation Doc (#657)

* initial draft of keycloak documentation

* cat tag

_articles/login-with-sso/saml-keycloak.md

@@ -1,28 +1,205 @@
 ---
 layout: article
 title: Keycloak SAML Implementation
-categories: []
+categories: [login-with-sso]
 featured: false
 popular: false
 hidden: true
 tags: [sso, saml, keyclock]
 order:
 ---
+This article contains **Keycloak-specific** help for configuring Login with SSO via SAML 2.0. For help configuring Login with SSO for another IdP, refer to [SAML 2.0 Configuration]({{site.baseurl}}/article/configure-sso-saml/).
 
-This article contains sample configurations for Bitwarden **Login with SSO** (SAML 2.0) implementations with Keyclock.
+Configuration involves working simultaneously with the Bitwarden [Business Portal]({{site.baseurl}}/article/about-business-portal) and the Keycloak Portal. As you proceed, we recommend having both readily available and completing steps in the order they're documented.
 
-Use this as reference material for the [Configuring Login with SSO (SAML 2.0)]({% link _articles/login-with-sso/configure-sso-saml.md%}) article.
 
-## Keycloak Portal
+## Open the Business Portal
 
-The following is a sample SAML 2.0 implementation with Bitwarden in the Keycloak Portal:
+If you're coming straight from [SAML 2.0 Configuration]({{site.baseurl}}/article/configure-sso-saml/), you should already have an [Organization ID created](https://bitwarden.com/help/article/configure-sso-saml/#step-1-enabling-login-with-sso) and the SSO Configuration screen open. If you don't, open your
+[Business Portal]({{site.baseurl}}/article/about-business-portal/) and navigate to the SSO Configuration screen:
+
+{% image sso/sso-saml1.png SAML 2.0 Configuration %}
+
+You don't need to edit anything on this screen yet, but keep it open for easy reference.
+
+## Create a Client
+
+In the Keycloak portal, create a new Client:
+
+{% image sso/cheatsheets/saml-keycloak/keycloak-createclient.png Create a Client %}
+
+On the **Add Client** screen, configure the following settings:
+
+|Field|Description|
+|-----|-----------|
+|Client ID|Set this field to the pre-generated **SP Entity ID** retrieved from the Bitwarden SSO Configuration screen.<br><br>For Cloud-hosted customers, this is always `https://sso.bitwarden.com/saml2`. For self-hosted instances, this is determined by your [configured server URL]({{site.baseurl}}/article/install-on-premise/#configure-your-domain), for example `https://your.domain.com/sso/saml2`.|
+|Client Protocol|Select `saml`.|
+|Client SAML Endpoint|Enter your master SAML processing URL, for example `https://<keycloak_domain>/auth/realms/master/protocol/saml`.|
+
+When you're finished, select the **Save** button.
+
+### Settings
+
+On the **Settings** tab, configure the following options:
+
+|Field|Description|
+|-----|-----------|
+|Name|Give the client a unique, Bitwarden-specific name.|
+|Enabled|Toggle to **On**.|
+|Sign Documents|Specify whether SAML documents should be signed by the Keycloak realm.|
+|Sign Assertions|Specify whether SAML assertions should be signed by the Keycloak realm.|
+|Signature Algorithm|If **Sign Assertions** is enabled, select what algorithm to sign with (`sha-256` by default).|
+|Name ID Format|Select the Name ID Format for Keycloak to use in SAML responses.|
+|Valid Redirect URLs|Set this field to the pre-generated Assertion Consumer Service (ACS) URL retreived from the Bitwarden SSO configuration screen.<br><br>For Cloud-hosted customers, this is always `https://sso.bitwarden.com/saml2/your-org-id/Acs`. For self-hosted instances, this is determined by your configured server URL, for example `https://your.domain/sso/your-org-id/Acs`.|
+|Base URL|Set this field to the login URL from which users will access Bitwarden.<br><br>For Cloud-hosted customers, this is always `https://vault.bitwarden.com/#/sso`. For self-hosted instances, this is determined by you [configured server URL]({{site.baseurl}}/article/install-on-premise/#configure-your-domain), for example `https://your-domain.com/#/sso`.|
+|Master SAML Processing URL|If not automatically filled in, set this field to your master SAML processing URL, for example `https://<keycloak_domain>/auth/realms/master/protocol/saml`.|
+
+#### Fine Grain SAML Endpoint Configuration
+
+In the **Fine Grain SAML Endpoint Configuration** section, configure either the **Assertion Consumer Service POST Binding URL** or **Assertion Consumer Service Redirect Binding URL**. You will choose in a later step whether to use HTTP POST or Redirect, so configure whichever you'd like to use:
+
+{% image sso/cheatsheets/saml-keycloak/keycloak-samlendpoint.png Configure SAML Endpoint %}
+
+For either field, set it to the pre-generated Assertion Consumer Service (ACS) URL retreived from the Bitwarden SSO configuration screen. For Cloud-hosted customers, this is always `https://sso.bitwarden.com/saml2/your-org-id/Acs`. For self-hosted instances, this is determined by your configured server URL, for example `https://your.domain/sso/your-org-id/Acs`.
+
+### Mappers
+
+Select the **Mappers** tab and create all of the following Mappers:
+
+
+<ul class="nav nav-tabs" id="myTab" role="tablist">
+  <li class="nav-item" role="presentation">
+    <a class="nav-link active" id="1tab" data-target="#givenname" role="tab" aria-controls="givenname" aria-selected="true">X500 givenName</a>
+  </li>
+  <li class="nav-item" role="presentation">
+    <a class="nav-link" id="2tab" data-target="#surname" role="tab" aria-controls="surname" aria-selected="false">X500 surname</a>
+  </li>
+  <li class="nav-item" role="presentation">
+    <a class="nav-link" id="3tab" data-target="#email" role="tab" aria-controls="email" aria-selected="false">X500 email</a>
+  </li>
+  <li class="nav-item" role="presentation">
+    <a class="nav-link" id="4tab" data-target="#groups" role="tab" aria-controls="groups" aria-selected="false">groups</a>
+  </li>
+  <li class="nav-item" role="presentation">
+    <a class="nav-link" id="5tab" data-target="#roles" role="tab" aria-controls="roles" aria-selected="false">role list</a>
+  </li>
+</ul>
+<div class="tab-content" id="clientsContent">
+  <div class="tab-pane show active" id="givenname" role="tabpanel" aria-labelledby="1tab">
+{% capture givenname %}
+### X500 givenName
+
+{% image sso/cheatsheets/saml-keycloak/x500-givenname.png %}
+
+{% endcapture %}
+{{ givenname | markdownify}}
+  </div>
+  <div class="tab-pane" id="surname" role="tabpanel" aria-labelledby="2tab">
+{% capture surname %}
+### X500 surname
+
+{% image sso/cheatsheets/saml-keycloak/x500-surname.png %}
+
+{% endcapture %}
+{{ surname | markdownify}}
+  </div>
+  <div class="tab-pane" id="email" role="tabpanel" aria-labelledby="3tab">
+{% capture email %}
+### X500 email
+
+{% image sso/cheatsheets/saml-keycloak/x500-email.png %}
+
+{% endcapture %}
+{{ email | markdownify}}
+  </div>
+  <div class="tab-pane" id="groups" role="tabpanel" aria-labelledby="4tab">
+{% capture groups %}
+### groups
+
+{% image sso/cheatsheets/saml-keycloak/groups.png %}
+
+{% endcapture %}
+{{ groups | markdownify}}
+  </div>
+  <div class="tab-pane" id="roles" role="tabpanel" aria-labelledby="5tab">
+{% capture roles %}
+### role list
+
+{% image sso/cheatsheets/saml-keycloak/rolelist.png %}
+
+{% endcapture %}
+{{ roles | markdownify}}
+  </div>
+</div>
+
+### Download your Certificate
+
+From the navigation, select **Realm Settings** &rarr; **Keys** and get your certificate:
+
+{% image sso/cheatsheets/saml-keycloak/keycloak-getcert.png Get Keycloak Certificate %}
+
+Copy the certificate for use in a [later step](#identity-provider-configuration).
+
+## Back to the Business Portal
+
+At this point, you've configured everything you need within the context of the Keycloak Portal. Jump back over to the Bitwarden Business Portal to complete configuration.
+
+The Business Portal separates configuration into two sections:
+
+- **SAML Service Provider Configuration** will determine the format of SAML requests.
+- **SAML Identity Provider Configuration** will determine the format to expect for SAML responses.
+
+### Service Provider Configuration
+
+Configure the following fields:
+
+|Field|Description|
+|-----|-----------|
+|Name ID Format|Select the Name ID Format you chose when [configuring the Keycloak client](#settings).|
+|Outbound Signing Algorithm|The algorithm Bitwarden will use to sign SAML requests.|
+|Signing Behavior|Whether/when SAML requests will be signed.|
+|Minimum Incoming Signing Algorithm|Select the algorithm the Keycloak client is [configured to use](#settings) to sign SAML documents or assertions.|
+|Want Assertions Signed|Whether Bitwarden expects SAML assertions to be signed. If toggled on, make sure you configure the Keycloak client to [sign assertions](#settings).|
+|Validate Certificates|Check this box when using trusted and valid certificates from your IdP through a trusted CA. Self-signed certificates may fail unless proper trust chains are configured with the Bitwarden Login with SSO docker image.|
+
+When you're done with the Service Provider Configuration section, **Save** your work.
+
+### Identity Provider Configuration
+
+Identity Provider Configuration will often require you to refer back to the Keycloak Portal to retrieve client values:
+
+|Field|Description|
+|-----|-----------|
+|Entity ID|Enter the URL of the Keycloak realm on which the client was created, for example `https://<keycloak_domain>/auth/realms/master/`.|
+|Binding Type|Select **HTTP POST** or **Redirect**.|
+|Single Sign On Service URL|Enter your master SAML processing URL, for example `https://<keycloak_domain>/auth/realms/master/protocol/saml`.|
+|Single Log Out Service URL|Login with SSO currently **does not** support SLO. This option is planned for future development, however you may preconfigure it with your **Logout URL** if you wish.|
+|Artifact Resolution Service URL|Leave this field blank, Keycloak SAML supports only HTTP POST and Redirect.|
+|X509 Public Certificate|Paste the [downloaded certificate](#download-your-certificate), removing `-----BEGIN CERTIFICATE-----` and `-----END CERTIFICATE-----`.<br><br>Extra spaces, carriage returns, and other extraneous characters **will cause certificate validation to fail**.|
+|Outbound Signing Algorithm|Select the algorithm the Keycloak client is [configured to use](#settings) to sign SAML documents or assertions.|
+|Allow Unsolicited Authentication Response|Login with SSO currently **does not** support unsolicited (IdP-initiated) SAML assertions. This option is planned for future development.|
+|Disable Outbound Logout Requests|Login with SSO currently **does not** support SLO. This option is planned for future development.|
+|Want Authentication Requests Signed|Whether Keycloak expects SAML requests to be signed.|
+
+When you're done with the Identity Provider Configuration section, **Save** your work.
+
+## Test the Configuration
+
+Once your configuration is complete, test it by navigating to [https://vault.bitwarden.com](https://vault.bitwarden.com){:target="\_blank"} and selecting the **Enterprise Single Sign-On** button:
+
+{% image /sso/sso-button-lg.png Enterprise Single Sign-On button %}
+
+Enter the [configured Organization Identifier]({{site.baseurl}}/article/configure-sso-saml/#step-1-enabling-login-with-sso) and select **Log In**. If your implementation is successfully configured, you'll be redirected to the Keycloak login screen:
+
+{% image sso/cheatsheets/saml-keycloak/keycloak-login.png Keycloak Login Screen %}
+
+After you authenticate with your Azure credentials, enter your Bitwarden Master Password to decrypt your Vault!
+
+{% comment %}
 
 {% image sso/cheatsheets/saml-keycloak/saml-keycloak2.jpg %}
 
 {% image sso/cheatsheets/saml-keycloak/saml-keycloak1.jpg %}
 
-## Bitwarden Business Portal
-
-The following is a sample SAML 2.0 implementation with Keyclock in the Bitwarden Business Portal:
-
 {% image sso/cheatsheets/saml-keycloak/saml-keycloak-bitwarden.jpg %}
+{% endcomment %}