renamed dir name to match other publications
authorArnaud Le Hors <lehors@us.ibm.com>
Mon, 25 Aug 2014 13:15:21 -0700
changeset 764 9d27d8897a1d
parent 763 ca05b5ece23c
child 765 c948f405a855
renamed dir name to match other publications
TR/NOTE-LDP-ACR-20140825/Overview.html
--- a/TR/NOTE-LDP-ACR-20140825/Overview.html	Mon Aug 25 13:06:15 2014 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,402 +0,0 @@
-<!DOCTYPE html>
-<html lang="en" dir="ltr" typeof="bibo:Document " about="" property="dcterms:language" content="en">
-<head>
-    <title>LDP Access Control</title>
-    <!-- Changed by: , 25-Aug-2014 -->
-    <meta charset="utf-8">
-    
-    
-  <style>/*****************************************************************
- * ReSpec 3 CSS
- * Robin Berjon - http://berjon.com/
- *****************************************************************/
-
-/* --- INLINES --- */
-em.rfc2119 { 
-    text-transform:     lowercase;
-    font-variant:       small-caps;
-    font-style:         normal;
-    color:              #900;
-}
-
-h1 acronym, h2 acronym, h3 acronym, h4 acronym, h5 acronym, h6 acronym, a acronym,
-h1 abbr, h2 abbr, h3 abbr, h4 abbr, h5 abbr, h6 abbr, a abbr {
-    border: none;
-}
-
-dfn {
-    font-weight:    bold;
-}
-
-a.internalDFN {
-    color:  inherit;
-    border-bottom:  1px solid #99c;
-    text-decoration:    none;
-}
-
-a.externalDFN {
-    color:  inherit;
-    border-bottom:  1px dotted #ccc;
-    text-decoration:    none;
-}
-
-a.bibref {
-    text-decoration:    none;
-}
-
-cite .bibref {
-    font-style: normal;
-}
-
-code {
-    color:  #C83500;
-}
-
-/* --- TOC --- */
-.toc a, .tof a {
-    text-decoration:    none;
-}
-
-a .secno, a .figno {
-    color:  #000;
-}
-
-ul.tof, ol.tof {
-    list-style: none outside none;
-}
-
-.caption {
-    margin-top: 0.5em;
-    font-style:   italic;
-}
-
-/* --- TABLE --- */
-table.simple {
-    border-spacing: 0;
-    border-collapse:    collapse;
-    border-bottom:  3px solid #005a9c;
-}
-
-.simple th {
-    background: #005a9c;
-    color:  #fff;
-    padding:    3px 5px;
-    text-align: left;
-}
-
-.simple th[scope="row"] {
-    background: inherit;
-    color:  inherit;
-    border-top: 1px solid #ddd;
-}
-
-.simple td {
-    padding:    3px 10px;
-    border-top: 1px solid #ddd;
-}
-
-.simple tr:nth-child(even) {
-    background: #f0f6ff;
-}
-
-/* --- DL --- */
-.section dd > p:first-child {
-    margin-top: 0;
-}
-
-.section dd > p:last-child {
-    margin-bottom: 0;
-}
-
-.section dd {
-    margin-bottom:  1em;
-}
-
-.section dl.attrs dd, .section dl.eldef dd {
-    margin-bottom:  0;
-}
-
[email protected] print {
-    .removeOnSave {
-        display: none;
-    }
-}
-</style><link href="https://www.w3.org/StyleSheets/TR/W3C-WG-NOTE" rel="stylesheet"><!--[if lt IE 9]><script src='https://www.w3.org/2008/site/js/html5shiv.js'></script><![endif]--></head>
-  <body id="respecDocument" role="document" class="h-entry"><div id="respecHeader" role="contentinfo" class="head">
-  <p>
-    
-      <a href="http://www.w3.org/"><img src="https://www.w3.org/Icons/w3c_home" alt="W3C" height="48" width="72"></a>
-    
-  </p>
-  <h1 class="title p-name" id="title" property="dcterms:title">LDP Access Control</h1>
-  
-    <h2 property="bibo:subtitle" id="subtitle">Usecases and Requirements for Access Control for the Linked Data Platform</h2>
-  
-  <h2 id="w3c-working-group-note-25-august-2014" property="dcterms:issued" datatype="xsd:dateTime" content="2014-08-25T19:14:30.000Z"><abbr title="World Wide Web Consortium">W3C</abbr> Working Group Note <time class="dt-published" datetime="2014-08-25">25 August 2014</time></h2>
-  <dl>
-    
-      <dt>This version:</dt>
-      <dd><a class="u-url" href="http://www.w3.org/TR/2014/NOTE-LDP-ACR-20140825/">http://www.w3.org/TR/2014/NOTE-LDP-ACR-20140825/</a></dd>
-      <dt>Latest published version:</dt>
-      <dd><a href="http://www.w3.org/TR/LDP-ACR/">http://www.w3.org/TR/LDP-ACR/</a></dd>
-    
-    
-    
-    
-    
-    
-    
-    
-    <dt>Editor:</dt>
-    <dd class="p-author h-card vcard" rel="bibo:editor" inlist=""><span typeof="foaf:Person"><span property="foaf:name" class="p-name fn">Ashok Malhotra</span>, <a rel="foaf:workplaceHomepage" class="p-org org h-org h-card" href="http://www.oracle.com/">Oracle America, Inc.</a>, <span class="ed_mailto"><a class="u-email email" rel="foaf:mbox" href="mailto:[email protected]">[email protected]</a></span></span>
-</dd>
-
-    
-    
-  </dl>
-  
-  
-  
-  
-    
-      <p class="copyright">
-        <a href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a> ©
-        2014
-        
-        <a href="http://www.w3.org/"><abbr title="World Wide Web Consortium">W3C</abbr></a><sup>®</sup>
-        (<a href="http://www.csail.mit.edu/"><abbr title="Massachusetts Institute of Technology">MIT</abbr></a>,
-        <a href="http://www.ercim.eu/"><abbr title="European Research Consortium for Informatics and Mathematics">ERCIM</abbr></a>,
-        <a href="http://www.keio.ac.jp/">Keio</a>, <a href="http://ev.buaa.edu.cn/">Beihang</a>), 
-        
-        All Rights Reserved.
-        
-        <abbr title="World Wide Web Consortium">W3C</abbr> <a href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>,
-        <a href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a> and
-        
-          <a href="http://www.w3.org/Consortium/Legal/copyright-documents">document use</a>
-        
-        rules apply.
-      </p>
-    
-  
-  <hr>
-</div>
-    <section rel="bibo:Chapter" resource="#abstract" typeof="bibo:Chapter" datatype="" property="dcterms:abstract" class="introductory" id="abstract"><h2 id="h2_abstract" role="heading" aria-level="1">Abstract</h2>
-      <p>
-        This note discusses usecases and requirements for Access Control for the 
-		<a href="https://www.w3.org/2012/ldp/wiki/Main_Page">Linked Data Platform WG.</a> 
-		It also outlines a charter for developing a standard for HTTP-based access control. 
-		The work delineated in the charter may be pursued in the Linked Data Platform WG or an independent, related WG. 
-      </p>
-    </section><section rel="bibo:Chapter" resource="#sotd" typeof="bibo:Chapter" id="sotd" class="introductory"><h2 id="h2_sotd" role="heading" aria-level="1">Status of This Document</h2>
-  
-    
-      
-        <p>
-          <em>This section describes the status of this document at the time of its publication.
-          Other documents may supersede this document. A list of current <abbr title="World Wide Web Consortium">W3C</abbr> publications and the
-          latest revision of this technical report can be found in the <a href="http://www.w3.org/TR/"><abbr title="World Wide Web Consortium">W3C</abbr> technical reports index</a> at
-          http://www.w3.org/TR/.</em>
-        </p>
-        
-      <p>
-        While the <a href="https://www.w3.org/2012/ldp/wiki/Main_Page">Linked Data Platform WG.</a> did not 
-		address Access Control directly, a number of usescases and requirements were identified as part of its
-		deliberations.  These usecases and requirements are captured in this document to serve as a basis for 
-		future work.    
-      </p>
-    
-        <p>
-          This document was published by the <a href="https://www.w3.org/2012/ldp">Linked Data Platform WG</a> as a Working Group Note.
-          
-          
-            If you wish to make comments regarding this document, please send them to 
-            <a href="mailto:[email protected]@w3.org">[email protected]@w3.org</a> 
-            (<a href="mailto:[email protected]@w3.org?subject=subscribe">subscribe</a>,
-            <a href="http://lists.w3.org/Archives/Public/[email protected]/">archives</a>).
-          
-          
-          
-          
-            All comments are welcome.
-          
-        </p>
-        
-        
-          <p>
-            Publication as a Working Group Note does not imply endorsement by the <abbr title="World Wide Web Consortium">W3C</abbr>
-            Membership. This is a draft document and may be updated, replaced or obsoleted by other
-            documents at any time. It is inappropriate to cite this document as other than work in
-            progress.
-          </p>
-        
-        
-        
-        <p>
-          
-            This document was produced by a group operating under the 
-            <a id="sotd_patent" about="" rel="w3p:patentRules" href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5 February 2004 <abbr title="World Wide Web Consortium">W3C</abbr> Patent
-            Policy</a>.
-          
-          
-          
-            
-              <abbr title="World Wide Web Consortium">W3C</abbr> maintains a <a href="" rel="disclosure">public list of any patent
-              disclosures</a> 
-            
-            made in connection with the deliverables of the group; that page also includes
-            instructions for disclosing a patent. An individual who has actual knowledge of a patent
-            which the individual believes contains
-            <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#def-essential">Essential
-            Claim(s)</a> must disclose the information in accordance with
-            <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#sec-Disclosure">section
-            6 of the <abbr title="World Wide Web Consortium">W3C</abbr> Patent Policy</a>.
-          
-          
-        </p>
-        
-          <p>This document is governed by the <a id="w3c_process_revision" href="http://www.w3.org/2014/Process-20140801/">1 August 2014 <abbr title="World Wide Web Consortium">W3C</abbr> Process Document</a>.
-          </p>
-        
-        
-      
-    
-  
-</section><section id="toc"><h2 id="h2_toc" role="heading" aria-level="1" class="introductory">Table of Contents</h2><ul id="respecContents" role="directory" class="toc"><li class="tocline"><a class="tocxref" href="#access-control"><span class="secno">1. </span>Access Control</a></li><li class="tocline"><a class="tocxref" href="#terminology"><span class="secno">2. </span>Terminology</a></li><li class="tocline"><a class="tocxref" href="#usecases"><span class="secno">3. </span>Usecases</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#access-control-on-manipulation-of-resources-via-http"><span class="secno">3.1 </span>Access Control on manipulation of resources via HTTP</a></li><li class="tocline"><a class="tocxref" href="#editability-of-access-control-rules-using-http"><span class="secno">3.2 </span>Editability of Access Control Rules using HTTP</a></li><li class="tocline"><a class="tocxref" href="#user-interface-scenarios"><span class="secno">3.3 </span>User Interface Scenarios</a></li><li class="tocline"><a class="tocxref" href="#requirements"><span class="secno">3.4 </span>Requirements</a></li><li class="tocline"><a class="tocxref" href="#outline-of-a-charter-for-a-access-control-wg"><span class="secno">3.5 </span>Outline of a Charter for a Access Control WG</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#deliverables"><span class="secno">3.5.1 </span>Deliverables</a></li></ul></li></ul></li></ul></section>
-    
-    
-    
-    <section id="access-control">
-      <!--OddPage--><h2 id="h2_access-control" role="heading" aria-level="1"><span class="secno">1. </span>Access Control</h2>
-      <p>
-        Access Control is a mechanism through which an agent ( an HTTP server in this case ) permits other agents -- 
-		individuals, organizations, and/or groups made up of these -- to perform certain operations on resources as 
-		specified by policies for the resources and for the agents. Within this document, the resources are LDP resources, but the access 
-		control may operate at different granularities: RDF or other documents, named graphs or individual triples.
-		The operations are typically create, read, update, and delete (CRUD) but other operations can easily be accomodated by
-		this design.
-		</p>
-		<p>
-        When an agent requests a collection of resources it gets to see only those resources or parts of resources 
-		it is authorized for.</p>
-		<p>
-		Depending on the granularity, the access control mechanisms may affect performance, but should not affect 
-		semantics.</p>
-		<p>
-		For access control to come into play, the server must restrict some operations on some resources. 
-		</p>
-		</section>
-		<section id="terminology">
-	  <!--OddPage--><h2 id="h2_terminology" role="heading" aria-level="1"><span class="secno">2. </span>Terminology</h2>
-	  <ul>
-	  <li>ACG: An Access Control Graph describes the permitted modes of access for particular agents to apecific resources.</li>
-	  <li>ACG Resource: A resource whose representation contains one or more ACGs which the server relies 
-	  upon to make access control decisions.</li>
-	  </ul>
-    </section>
-	<section id="usecases">
-	<!--OddPage--><h2 id="h2_usecases" role="heading" aria-level="1"><span class="secno">3. </span>Usecases</h2>
-	<section id="access-control-on-manipulation-of-resources-via-http">
-	<h3 id="h3_access-control-on-manipulation-of-resources-via-http" role="heading" aria-level="2"><span class="secno">3.1 </span>Access Control on manipulation of resources via HTTP</h3>
-	Adam's user agent attempts:
-	<ol>	
-    <li>To CREATE, READ, UPDATE (or PATCH), or DELETE a resource identified by a URL.  The server may immediately 
-	allow or deny the request, or it may request that he authenticate to confirm his privileges, 
-	as specified by the ACG for the Resource.</li>
-    <li>If he is denied access, an explanation of why all or part of his request was denied should be provided 
-	so that it becomes possible to detect errors, and so that he may modify the request -- 
-	potentially to include making a request for such privileges.
-	</li>
-    <li>Adam would ideally like to know whether he will be able to perform an Action on a Resource 
-	before attempting such - i.e., whether he will have to authenticate before he is able to Read or Write the Resource.
-	</li>
-	<ol>
-	</ol></ol></section>
-	<section id="editability-of-access-control-rules-using-http">
-	<h3 id="h3_editability-of-access-control-rules-using-http" role="heading" aria-level="2"><span class="secno">3.2 </span>Editability of Access Control Rules using HTTP</h3>
-	<ol>
-	<li>
-    Bart's user agent logs on to a server and requests
-	the capability to read a group of related resources such as all the papers presented at a conference.</li>
-    
-	<li>Employees with job titles VP or SVP can sign (update) supplier contracts.</li>
-    <li>Charlie, the Webmaster, would like to grant read access to the papers presented at a conference to all the 
-	people who attended the conference.</li>
-	<ol>
-	</ol></ol></section>
-	<section id="user-interface-scenarios">
-	<h3 id="h3_user-interface-scenarios" role="heading" aria-level="2"><span class="secno">3.3 </span>User Interface Scenarios</h3>
-	Eddie's HTTP based user agent would like to provide a user interface to allow, where possible, Eddie to 
-	<ol>
-	<li>Know if he can edit or delete a resource.</li>
-    <li>Know what he would have to do to have access to a resource ( be someone's friend, be part of a club, have 
-	paid a fee )</li>
-	<li>Allow Eddie to edit the access control rules for a resource such as:
-	<ol>
-        <li>Allow friends of his to access a document.</li>
-        <li>Allow friends of his to POST to a container, but only read a subset of the contents of the container, 
-		those posted by that agent for example.</li>
-        <li>Allow all the members of the LDP WG to create and edit resources including LDP Containers under a 
-		specific URL pattern.</li>
-		<li>Allow all friends of friends as expressed by the foaf:knows relations in one's foaf profile to POST comments 
-		to a container related to some content, and edit their own comments.</li>
-		<li>Allow the members of the LDP WG, the RWW CG, the WebID CG, and the member of the European Ontologist Network, 
-		to work together on set of ontologies. It should be possible to drag and drop URLs for these groups, 
-		found on the web, onto the User Interface as a way of creating the union of the members of the group.</li> 
-	</ol>
-	</li></ol>
-	</section>
-	<section id="requirements">
-	<h3 id="h3_requirements" role="heading" aria-level="2"><span class="secno">3.4 </span>Requirements</h3>
-	<ul>
-	<li>An Agent must be able to authenticate itself to a server with an identifier or as the owner of a token. 
-	( All use cases )</li>
-    <li>Ability to specify a collection of agents, identifying agents with URIs, URI patterns, or by description. 
-	(Usecase 3.2.2, 3.2.3)</li>
-    <li>Ability to specify a collection of resources, identified by URIs or URI patterns or by description,
-	with a specified access policy. (Usecase 3.2.1, 3.2.3)</li>
-    <li>Ability to connect a collection of agents with a collection of resources with given access privileges. 
-	( All use cases )</li>
-	</ul>
-	
-	<p>The above requirements require the ability, by an authorized agent, to CREATE, EDIT, UPDATE relevant ACGs. 
-
-	</p><ul>
-	<li>Ability to specify access privileges at a fine-grained level. (Usecase 3.1.2, 3.2.1.2)</li>
-    <li>The server should be able to describe access control policies for a resource. (Usecase 3.1.4, 3.3.1, 3.3.2)</li>
-    <li>The server should be able explain the reasons for access being disallowed in a machine readable format.
-	(Usecase 3.1.3)
-	</li>
-    <li>A user-agent should be able to find the ACG for a given resource.(Usecase 3.1.1)</li>
-	<li>The ability by one user agent to delegate the authority to create and edit ACGs to another agent.(Usecase 3.3.3)</li>
-	</ul>
-	</section>
-	<section id="outline-of-a-charter-for-a-access-control-wg">
-	<h3 id="h3_outline-of-a-charter-for-a-access-control-wg" role="heading" aria-level="2"><span class="secno">3.5 </span>Outline of a Charter for a Access Control WG</h3>
-	<p>An Access Control Graph (ACG) consists of two kinds of collections: a collection of agents and a collection of 
-	resources. It then connects a collection of agents with a collection of resources with the connection identifying 
-	the privileges the agents have on the resources: CREATE, READ, UPDATE, DELETE.</p>
-	<p>ACGs are resources in their own right and can have access control priviledges specified for them just like
-	any other resource.  This permits the creation and modification of ACGs to be delegated.
-	</p>
-	<p>
-	The members of the collection of agents contain tokens that the agents obtain from some authentication service. 
-	The members of the collection of resources are URIs or URI templates.</p>
-	<p>The WG will need to decide whether it also wants to define fine-grained access control at an attribute level.</p>
-<section id="deliverables">
-<h4 id="h4_deliverables" role="heading" aria-level="3"><span class="secno">3.5.1 </span>Deliverables</h4>
-<ul>
-<li>Define the collections that are part of the ACG and define how a collection of agents is connected to a 
-connection of resources.</li>
-<li>Define how ACGs can be created and edited and how these rights can be delegated.</li>
-<li>Describe a proof-of-concept implementation of how a request for access to a resource by an agent can be processed 
-efficiently with the ACG structure defined above.</li>
-</ul> 
-</section>	
-	</section>
-	</section>
-    
-    
-  
-
-</body></html>
\ No newline at end of file