OpenSAML is an open source toolkit for implementing the SAML 1.0 and 1.1 specifications. SAML (Security Assertion Markup Language) is an XML-based framework for communicating user authentication, entitlement, and attribute information. SAML allows entities to make assertions regarding the identity, attributes, and entitlements of a subject (an entity that is often a human user) to other entities, such as a partner organization or another application. . This package contains the OpenSAML development files.