Apereo CAS - eLumen SAML2 Integration


Collaborate
The blog is managed and hosted on GitHub. If you wish to update the contents of this post or if you have found an inaccuracy and wish to make corrections, we recommend that you please submit a pull request to this repository.
Contributed Content
Paul Spaude of Unicon, Inc was kind enough to contribute this guide.

eLumen is a higher-ed, assessment and curriculum management system that gives real insight into each students’ engagement and progress—while satisfying the growing demands of accreditation and other compliance mandates. As a SAML2 service provider, it can be integrated with CAS running as a SAML identity provider and this blog post provides a quick walkthrough of how to make that integration possible.

Our starting position is based on the following:

CAS Configuration

First, ensure that your CAS deployment is equipped to act as a SAML2 identity provider. Next, you may also use the JSON Service Registry to keep track of the relying-party registration record in JSON definition files.

The JSON file to contain the service provider relying-party record would be as follows:

{
  "@class" : "org.apereo.cas.support.saml.services.SamlRegisteredService",
  "serviceId" : "[entity-id].elumenapp.com",
  "name" : "ELumen",
  "id" : 1,
  "evaluationOrder" : 1,
  "metadataLocation" : "/path/to/elumen-metadata.xml",
  "encryptAssertions" : false,
  "signAssertions" : false,
  "signResponses" : true,
  "attributeReleasePolicy": {
    "@class": "org.apereo.cas.services.ReturnMappedAttributeReleasePolicy",
    "allowedAttributes": {
      "@class": "java.util.TreeMap",
      "uid": "uid",
      "eduPersonPrincipalName": "groovy { return attributes['eduPersonPrincipalName'].get(0) + '@exampl.org' }"
    }
  }
}

A few things to point out:

  • You will need to adjust the metadataLocation to match your instance.
  • Make sure CAS has retrieved the allowed attributes (i.e. eduPersonPrincipalName, uid etc) listed in the JSON definition file.
  • Make sure the SP metadata has the correct entity id, matching the instance.

Finale

Thanks to Paul Spaude of Unicon, Inc who was kind enough to share the above integration notes. If you too have an integration with a well-known SAML2 service provider, please consider sharing that guide in form of a blog post here as well.

Misagh Moayyed

Related Posts

CAS 6.1.0 RC3 Feature Release

...in which I present an overview of CAS 6.1.0 RC3 release.

Apereo CAS 6.1.x - Credential Caching & Proxy AuthN

Learn how you may configure Apereo CAS to capture and cache the credential's password and the proxy-granting ticket in proxy authentication scenarios, pass them along to applications as regular attributes/claims. We will also be reviewing a handful of attribute release strategies that specifically affect authentication attributes, conveying metadata about the authentication event itself.

Apereo CAS 6.1.x - Attribute Repositories w/ Person Directory

An overview of CAS attribute repositories and strategies on how to fetch attributes from a variety of sources in addition to the authentication source, merge and combine attributes from said sources to ultimately release them to applications with a fair bit of caching.

Apereo CAS 6.1.x - Building CAS Feature Modules

An overview of how various CAS features modules today can be changed and tested from the perspective of a CAS contributor working on the codebase itself to handle a feature request, bug fix, etc.

CAS 6.1.0 RC2 Feature Release

...in which I present an overview of CAS 6.1.0 RC2 release.

Apereo CAS - Riffing on Attribute Release Policies

Learn how to release the kraken of attributes to CAS clients, relying parties and service providers using a variety of attribute release policies and authentication protocols, sampled and collected here to fun and profit.

Apereo CAS - Delegated Authentication to SAML2 Identity Providers

Learn how your Apereo CAS deployment may be configured to delegate authentication to an external SAML2 identity provider.

Apereo CAS - Custom Login Fields w/ Dynamic Bindings

Learn how to extend the Spring Webflow model to add custom fields to the CAS login form and the authentication process and take advantage of the additional user-provided data in customized authentication handlers.

Apereo CAS as an OAuth2 Authorization Server

Learn how to configure CAS as an OAuth2 Authorization Server and configure Spring Boot client app to work with it

Apereo CAS - SAML2 Identity Provider Integration w/ Gitlab (also staring HAProxy and LDAP)

Learn how Apereo CAS may act as a SAML2 identity provider for Gitlab and run everything locally on a workstation with Docker and Java.