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Subject: RE: [office] RE: XAdES support in ODF


Several more detailed answers when my wife isn't waiting on me - 

Why would you even write a 0-length file into the archive? Seems an odd thing to do. 

I'll get back to the rest of it later.

________________________________________
From: Dennis E. Hamilton [dennis.hamilton@acm.org]
Sent: Saturday, September 25, 2010 10:53 AM
To: 'Hanssens Bart'; office@lists.oasis-open.org
Cc: 'Cornelis Frank'
Subject: RE: [office] RE: XAdES support in ODF

Oh ... just noticed:

It seems we have no right to assume that the 0-length
Configurations2/accelerator/current.xml is an XML file.  Note that it has no
recognizable media-type (and that is another validator-catchable problem,
though):

   <manifest:file-entry
       manifest:media-type=""
       manifest:full-path="Configurations2/accelerator/current.xml"/>

 - Dennis

-----Original Message-----
From: Dennis E. Hamilton [mailto:dennis.hamilton@acm.org]
Sent: Saturday, September 25, 2010 09:35
To: 'Hanssens Bart'; office@lists.oasis-open.org
Cc: 'Cornelis Frank'
Subject: RE: [office] RE: XAdES support in ODF

Good point.  No, a 0-length file is not a valid XML document.  It is not
even well-formed.  The syntax rule for document requires that there be a
root element.  (See [XML1.0] section 2.1 and the rule for element in section
3.)

So it seems appropriate that canonicalization will fail and treating the
file as a 0-length raw binary is an useful fall-back in a signature
application, since we don't want the signing to fail over such a thing.

On the other hand, this looks like something an ODF validator should catch.

 - Dennis

-----Original Message-----
From: Hanssens Bart [mailto:Bart.Hanssens@fedict.be]
Sent: Saturday, September 25, 2010 02:11
To: office@lists.oasis-open.org
Cc: Cornelis Frank
Subject: RE: [office] RE: XAdES support in ODF

Hi,

> You're right, the Configurations2\accelerator\current.xml should have been
> signed, and it was.  Oddly, they used the default transformation, but I
> guess that is tolerable considering it is a 0-length file.

The ...current.xml is indeed signed, using the default transformation
because
another transformation will throw an exception (Java 6)

(Is a 0-length xml file valid XML by the way ?)


Bart


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