[xacml] [CR] PDP-supported attributes

STATUS: Editorial.  Implementation of #149 resolution.

TEXT LOCATION: 10.3.5 Attributes, following "...their semantics
are not transparent to the PDP implementation."

TEXT CHANGE: Append:

  If a value for one of these attributes is supplied in the
  original Request, then the PDP MUST use that value.  Otherwise,
  the PDP MUST supply a value.  For the date and time attributes,
  the supplied value MUST have the semantics of "date and time
  that apply to the Request".  For the subject-category
  attribute, the supplied value is the default value of
  "urn:oasis:names:tc:xacml:1.0:subject-category:access-subject".

TEXT LOCATION: 10.3.5 Attributes, at end of table of attribute
  identifiers, following ...current-dateTime  M.

TEXT CHANGE: Append:

   urn:oasis:names:tc:xacml:1.0:subject:subject-category      M

TEXT LOCATION: 10.3.6 Identifiers, first paragraph, following
  "...since the semantics of the attributes are transparent to
  the PDP."

TEXT CHANGE: Delete the following sentence:

  The attribute
  "urn:oasis:names:tc:xacml:1.0:subject:subject-category" MUST be
  supported, since it is implicit with a value of
  "urn:oasis:names:tc:xacml:1.0:subject-category:access-subject"
  if no other subject-category attribute value is specified.

DISCUSSION:

  These changes make the resolution to "CR#0149: [Seth Proctor]
  Environment attributes" specific.  Also, the special handling
  for subject:subject-category are moved from 10.3.6 Identifiers
  up to 10.3.5 Attributes, since the 10.3.5 is where attributes
  requiring special PDP handling are described.


Anne Anderson and Seth Proctor
-- 
Anne H. Anderson             Email: 
Sun Microsystems Laboratories
1 Network Drive,UBUR02-311     Tel: 781/442-0928
Burlington, MA 01803-0902 USA  Fax: 781/442-1692