I have a Drupal site I am standing up for a client. I've been asked to use Single Sign on using SAML2 (where I would be the service provider and my client would be the identity provider).
The best thing I have found so far has been either
SimpleSAMLPHP https://ow.feide.no/simplesamlphp:drupal
or
Shibboleth -- http://drupal.org/project/shib_auth
From looking at the documentation from these it looks like the Shibboleth module might be further ahead, but I'm not sure that you can connect Shibboleth to SAML. Can you? Or do you need to connect to a Shibboleth identity provider?
The SimpleSAML module looks good, except it seems to require memcache which I would prefer to not use.
Thanks!
Shibboleth is a web-based Single Sign-On infrastructure. It is based on SAML, a standard for the exchange of authentication data. Shibboleth has been adopted by the University of California as the basis for federated Single Sign-On between the UC campuses.
Shibboleth is a web-based software tool that supports single sign-on (SSO) between two applications or between two organizations. It is an open-source tool and mainly used for Single Sign-On (SSO) using SAML protocol.
Shibboleth uses either Security Assertion Markup Language (SAML) or OpenID Connect (OIDC), two industry standard protocols, to share the attributes (SAML) or claims (OIDC). This means you can set it up to work with a wide variety of vendor-provided software and services.
The Shibboleth project is an implementation of SAML, which is a specification of a protocol that deals with exchange of Assertions (AKA security tokens). A shibboleth server is an installation that talks the Identity Provider side of the SAML protocol, and it will be able to talk to any Service Provider as long at they both follow the specifications of SAML. Since this is the case for both SimpleSAMLPHP and the Shibboleth Service Provider modules, you can use either really. So if you don't want to use memcache you can safely choose shib_auth.
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