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All,<br>
<br>
Here is a quick status report on the four projects. Each of the
projects has its own ftp sub-directory that includes a README file
with a fuller description of the project.<br>
<br>
<a class="moz-txt-link-freetext" href="ftp://www.steptools.com/private/P21e3_DIS_testing">ftp://www.steptools.com/private/P21e3_DIS_testing</a> (try
<a class="moz-txt-link-abbreviated" href="ftp://ftp.steptools.com">ftp.steptools.com</a> if <a class="moz-txt-link-abbreviated" href="http://www.steptools.com">www.steptools.com</a> does not work for you)<br>
<br>
1. Digital signatures<br>
<br>
Status<br>
--------<br>
a. We have updated the signature code to only make one section for
each signature (previous version spit the signature, key and
certificate into three sections).<br>
b. We have updated the signature algorithm to ignore characters that
are not in the P21 character set<br>
c. We have create a server and some example files to enable wider
testing (see README).<br>
<br>
Issues and Opportunities<br>
----------------------------------<br>
a. Can we extend the signatures to assist in the management of data
networks?<br>
b. If a signed file references another file and the signature of the
referenced file is invalid does that mean the signature of the
referencing file is also invalid?<br>
c. NIST has a project called Product-Lifecyle-Of-Trust (PLOT) that
may be able to help us with further development and testing (see
README directory for one-page overview).<br>
<br>
<br>
2. ZIP Assemblies<br>
<br>
Status<br>
--------<br>
a. We have created the first example of a computer generated ZIP
Assembly file (see README)<br>
<br>
Issues and Opportunities<br>
----------------------------------<br>
a. There are many files called "ISO-10303-21.txt" in the ZIP which
has the potential to cause data management and confusion issues. <br>
b. Do we need to define a signature algorithm for ZIP files?<br>
c. Should the next stage be to create an e3 file for the PDM in the
assembly?<br>
<br>
<div class="moz-forward-container">3. Units<br>
<br>
Status<br>
--------<br>
a. Extensive discussions have shown that the definition of units
is jealously guarded between the ISO committees and (perhaps as a
result) the URN's created for the standard units<br>
are somewhat complex - for example <span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">urn:iso:std:iso:31:term:metre</span><br>
<br>
Issues and Opportunities<br>
----------------------------------<br>
a. W3C has loosened the requirements for URN's so we may be able
to define unit URNs just for Part 21 e3 files - for example
urn:p21:metre<br>
b. Do we want to use URN's to define other types of repetitive
STEP entities such as the APPLICATION_PROTOCOL_DEFINITION entity
instance e.g. urn:step:AP242<br>
c. Are fancy URN's with query parameters allowed? If so then we
may be able to use these to define date-times and similar
repetitive entity sets<br>
<br>
Martin<br>
<br>
-------- Original Message --------
<table class="moz-email-headers-table" cellpadding="0"
cellspacing="0" border="0">
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<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Subject:
</th>
<td>[wg11] Reminder: P21e3 Testing webconf on Friday</td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Date: </th>
<td>Thu, 26 Jun 2014 14:31:46 -0400</td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">From: </th>
<td>David Loffredo <a class="moz-txt-link-rfc2396E" href="mailto:loffredo@steptools.com"><loffredo@steptools.com></a></td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Organization:
</th>
<td>STEP Tools, Inc.</td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">To: </th>
<td><a class="moz-txt-link-abbreviated" href="mailto:wg11@steptools.com">wg11@steptools.com</a></td>
</tr>
</tbody>
</table>
<br>
<br>
<pre>Hi everyone, just a quick reminder about the P21e3 testing webconf
scheduled for tomorrow. Details are below.
- Dave
-------- Original Message --------
Subject: [wg11] Meeting invitation: P21e3 Testing
Date: Thu, 5 Jun 2014 15:43:51 +0000 (GMT)
From: David Loffredo <a class="moz-txt-link-rfc2396E" href="mailto:messenger@webex.com"><messenger@webex.com></a>
Reply-To: <a class="moz-txt-link-abbreviated" href="mailto:loffredo@steptools.com">loffredo@steptools.com</a>
To: <a class="moz-txt-link-abbreviated" href="mailto:wg11@steptools.com">wg11@steptools.com</a>
Hello ,
David Loffredo invites you to attend this online meeting.
Topic: P21e3 Testing
Date: Friday, June 27, 2014
Time: 10:00 am, Eastern Daylight Time (New York, GMT-04:00)
Meeting Number: 956 406 113
Meeting Password: (This meeting does not require a password.)
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You can contact me at:
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</pre>
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