According to this and this stack overflow question, spring security can not act as a saml 2.0 identity provider.
As far as i understand, there are standalone products out there which can act as saml identity providers (shibboleth, simplesamlphp, etc).
What would be the approach to integrate spring-security and shibboleth so a spring application can act as an identity provider for a saml service provider?
I'm also wondering if there's a specific reason why there's no identity provider implementation in the spring-security extension available.