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From "Dennis E. Hamilton" <>
Subject FW: Status of the Simple Java API for ODF and ODFDOM - 08/10/2011
Date Mon, 15 Aug 2011 17:59:01 GMT
Now that the list exists, ...

-----Original Message-----
From: Dennis E. Hamilton [] 
Sent: Wednesday, August 10, 2011 08:42
To: 'Biao Han'
Subject: RE: Status of the Simple Java API for ODF and ODFDOM - 08/10/2011

Nicely done.  Thanks for being so visible.

Another thing you can do is set up an ODFtoolkit blog at Apache.  Ideally, the mailing lists
will appear soon.

Two Questions:

 1.   My impression is that the signatures from OO.o are correct.  They do specify namespaces,
but use default namespace declarations instead of prefixes.
  In what way is the signature document incorrect?
  Also, what versions of are you checking signatures against?
  I have signatures from LibreOffice 3.4 that do not appear to duplicate X.509 certificates
and that seem to use namespaces correctly, although dsig namespace is 
declared with default xmlns declaration.

 2.   Does ODFDOM fail because of namespace being declared as default or because of something
to do with canonicalization?  If the XML Digital Signature specification requires default
namespace, it may be that ODF specification is incorrect.
  Have you found expert appraisal of what XML Digital Signature requires?

 - Dennis

-----Original Message-----
From: Biao Han [] 
Sent: Wednesday, August 10, 2011 08:14
Subject: Status of the Simple Java API for ODF and ODFDOM - 08/10/2011

[ ... ]

   1. Working on data signature. There are two issues caused by OpenOffice
   block the process.
       (1) generate a Namespace unaware signature document.
   ODFDOM loads it fails.
       (2) creates multiple X509Certificates instead of the
   correct certification chain under ds:KeyInfo.
       see also: (ds namespace
         in LibreOffice) (ds
         namespace in OOo) (multiple
         X509Certificate  in OOo)
       We have to supply two modes to fix it. One follows ODF
   specification, the other follows Open Office. The question is which is
   the default?
[ ... ]


Biao Han (Devin)
SOA Standards Growth, Emerging Technology Institute(ETI), IBM China
Software Development Laboratory
Address: 3/F Ring Building, No.28 Building, Zhong Guan Cun Software Park,
No. 8 Dong Bei Wang West Road, ShangDi, Haidian District, Beijing,

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