Document title: Shared Credential - Unique class Document identifier: sstc-saml-authn-context-ext-unique.xsd Location: http://www.oasis-open.org/committees/documents.php?wg_abbrev=security Revision history: V2.0 (September 2006) This class is defined by a fixed value of '0' for the SharedCredential extension, indicating that the credential was uniquely held. There MUST be an Extension element in the PrincipalAuthenticationMechanism