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                                        <img id="email-avatar" src="https://issues.shibboleth.net/jira/secure/useravatar?ownerId=ian%40iay.org.uk&avatarId=10125" alt="" height="48" width="48" border="0" align="left" style="padding:0;margin: 0 16px 16px 0;" />
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                                    <a class="user-hover" rel="ian@iay.org.uk" id="email_ian@iay.org.uk" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=ian%40iay.org.uk" style="color:#326ca6;">Ian Young</a>
     created <img src="https://issues.shibboleth.net/jira/images/icons/improvement.gif" height="16" width="16" border="0" align="absmiddle" alt="Improvement"> <a style='color:#326ca6;text-decoration:none;' href='https://issues.shibboleth.net/jira/browse/XSTJ-29'>XSTJ-29</a>
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                <a style='color:#326ca6;text-decoration:none;' href='https://issues.shibboleth.net/jira/browse/XSTJ-29'><strong>need more sophisticated ID attribute handling</strong></a>
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        <strong style="font-weight:normal;color:#505050;">Issue Type:</strong>
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                <img src="https://issues.shibboleth.net/jira/images/icons/improvement.gif" height="16" width="16" border="0" align="absmiddle" alt="Improvement">        Improvement
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        <strong style="font-weight:normal;color:#505050;">Affects Versions:</strong>
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                    1.2.0            </td>
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        <strong style="font-weight:normal;color:#505050;">Assignee:</strong>
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                                        <a class="user-hover" rel="ian@iay.org.uk" id="email_ian@iay.org.uk" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=ian%40iay.org.uk" style="color:#326ca6;">Ian Young</a>
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        <strong style="font-weight:normal;color:#505050;">Created:</strong>
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        06/Mar/13 7:11 AM
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        <strong style="font-weight:normal;color:#505050;">Description:</strong>
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        <p style='margin-top:0;margin-bottom:10px;'>XmlSecTool 1.1.x handled ID-ness implicitly through the behaviour of Santuario 1.4.x.</p>

<p style='margin-top:0;margin-bottom:10px;'>In 1.2.0 we handle deducing which document element attribute contains the ID "backwards" by looking for the one which contains the appropriate ID <b>value</b>.  This is secure but not very general, and would break down if we ever supported signatures other than on the whole document.</p>

<p style='margin-top:0;margin-bottom:10px;'>Such more general handling would involve marking all attributes on the document which were ID attributes, but without all schemas being available that's hard.  Brent suggests that an approximation would take as input something like a<br/>
collection of Pair&lt;QName, QName&gt;, to represent the parent Element +child<br/>
Attr that should be ID, as well as a collection of QName, to represent<br/>
global ID attributes regardless of parent (e.g wsu:Id, xml:id).</p>

<p style='margin-top:0;margin-bottom:10px;'>If we're being that general, it would make sense to define a file<br/>
format to represent the above.  Have the built-in defaults pulled in<br/>
from a classpath resource in the jar declared using this format.  Allow<br/>
an optional command-line arg that points to an external file in the same<br/>
format that's merged in with the defaults.  Perhaps also provide a command-line arg which just designates simple attributes names on the document element to handle the simplest exceptional use cases.</p>

<p style='margin-top:0;margin-bottom:10px;'>This general problem might warrant a support class in Santuario or elsewhere, e.g., java-support.  If by the time we think this issue is worth addressing that support class already exists for other purposes, so much the better.</p>
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        <strong style="font-weight:normal;color:#505050;">Project:</strong>
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        <a style="color:#326ca6;" href="https://issues.shibboleth.net/jira/browse/XSTJ">XML Security Tool - Java</a>
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        <strong style="font-weight:normal;color:#505050;">Priority:</strong>
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                <img src="https://issues.shibboleth.net/jira/images/icons/priority_minor.gif" height="16" width="16" border="0" align="absmiddle" alt="Minor">        Minor
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        <strong style="font-weight:normal;color:#505050;">Reporter:</strong>
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                                        <a class="user-hover" rel="ian@iay.org.uk" id="email_ian@iay.org.uk" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=ian%40iay.org.uk" style="color:#326ca6;">Ian Young</a>
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