5. IANA Considerations

This document defines two TLS extensions, which require registration of the extension numbers in the TLS ExtensionType Registry defined in [TLSEXT2]. The values for the client_authz and server_authz extensions are 7 and 8, respectively.

This document also defines two AuthorizationDataFormat types, which require registration in a new IANA registry called the "TLS Authorization Data Formats" registry. This registry is part of the Transport Layer Security (TLS) Extensions registry established by [TLSEXT2]. The policy for adding entries to this registry is "Specification Required" as defined in [IANA].

This document defines four initial entries in the TLS Authorization Data Formats registry:

• x509_attr_cert(0) - X.509 Attribute Certificate [ATTRCERT];
• saml_assertion(1) - SAML Assertion [SAML1.1] [SAML2.0];
• x509_attr_cert_url(2) - X.509 Attribute Certificate URL [HTTP]; and
• saml_assertion_url(3) - SAML Assertion URL [HTTP].

Values in the inclusive range 0-63 (decimal) are assigned via IETF Review [IANA]. Values from the inclusive range 64-223 (decimal) are assigned via Specification Required [IANA]. Values from the inclusive range 224-255 (decimal) are reserved for RFC 5226 Private Use.