OASIS eXtensible Access Control Markup Language (XACML) TC

Re: [xacml] Questions about Context

  • 1.  Re: [xacml] Questions about Context

    Posted 07-17-2002 10:58
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    Subject: Re: [xacml] Questions about Context


    
    1. Both the subject and the action information in the response context are
    redundant for the application which holds the request context data. For
    simplicity, we don't need those elements in the response context. Besides,
    it might be useful to have some placeholder element in the response context
    where each application can put any information.
    
    2. I prefer "Environment".
    
    3. I thought that NameQualifier just corresponds to SAML's NameQualifier.
    
    4. No preference.
    
    5. xs:string is fine with me.
    
    6. Scope may not be needed in response.
    
    Michiharu
    
    IBM Tokyo Research Laboratory, Internet Technology
    Tel. +81 (46) 215-4642   Fax +81 (46) 273-7428
    
    
    
    
                                                                                                                                           
                          Tim Moses                                                                                                        
                          <tim.moses@entrus        To:       "'XACML'" <xacml@lists.oasis-open.org>                                        
                          t.com>                   cc:                                                                                     
                                                   Subject:  [xacml] Questions about Context                                               
                          2002/07/17 04:41                                                                                                 
                          Please respond to                                                                                                
                          Tim Moses                                                                                                        
                                                                                                                                           
                                                                                                                                           
    
    
    
    Colleagues - I have the following questions about Context.
    
    
    1. Should we repeat Subject and Actions in the Response?  If there are
    multiple Subjects and Actions in the Request, will it always be clear which
    Subject was permitted which Action?
    
    
    2. Should we call "Other" "Environment"?  The term "Other" doesn't convey
    much information to the reader.
    
    
    3. What is the purpose of the Qualifier attribute in the SubjectIdType
    definition?
    
    
    4. In Policy.xsd we use the term "Designator" (policy, rule, attribute).
    In Context.xsd we use the term "ResourceSpecifier".  Is this inconsistent?
    
    
    5. In ResourceSpecifier the ResourceId is of type xs:anyURI.  Should this
    not be xs:string?  Otherwise, non-xml resource instances cannot be named.
    
    
    6. The Scope element is in both the Request and the Response.  Do we need
    it in the Response?  Will one ever want to say the Request is permitted for
    children, but not for descendants, etc.?
    
    
    Do we need a discussion to answer these questions?  All the best.  Tim.
    
    
    -----------------------------------------
    Tim Moses
    Tel: 613.270.3183
    
    
    
    
    
    
    
    
    


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