Shibboleth allows users to securely send trusted information about themselves to remote resources. This information may then be used for authentication, authorization, content personalization, and enabling single sign-on across a broad range of services from many different providers.
Shibboleth V1.3.x and earlier releases of the Identity Provider and Service Provider are unsupported. Shibboleth V2.x is fully interoperable with V1.3.x releases, and is partially interoperable with older versions.
All software, including archived releases, is available from http://shibboleth.net/downloads/ and each release is accompanied by a detached PGP signature using one of the keys listed in the project's KEYS file.
For high-level information to get started, please read Understanding Shibboleth.