The SAML v2.0 specification may be found at:
https://www.oasis-open.org/standards#samlv2.0
The SAML v1.1 specification may be found at:
https://www.oasis-open.org/standards#samlv1.1
The SAML v2.0 specification may be found at:
https://www.oasis-open.org/standards#samlv2.0
The SAML v1.1 specification may be found at:
https://www.oasis-open.org/standards#samlv1.1