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Date: Fri, 2 Jul 2004 14:30:47 -0700
From: Noah Campbell <noahcampbell@gmail.com>
To: xmlbeans-dev@xml.apache.org
Subject: Re: xmlbeans xml security
In-Reply-To: <83A0A695-CBBE-11D8-B6FD-000A95C89D86@akuma.org>
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References: <4B2B4C417991364996F035E1EE39E2E1DCE2F3@uskiex01.amer.bea.com>
 <1088699043.5276.33.camel@newlyn2.providerlink.com>
 <de70b39d04070112136da73703@mail.gmail.com>
 <91D3E563-CBA4-11D8-B6FD-000A95C89D86@akuma.org>
 <de70b39d040701143022f5a1c8@mail.gmail.com>
 <5A2D8958-CBA8-11D8-B6FD-000A95C89D86@akuma.org>
 <de70b39d040701170070c90f12@mail.gmail.com>
 <83A0A695-CBBE-11D8-B6FD-000A95C89D86@akuma.org>

I would be delighted to work together.  Please let me know what I
should work on so we're not overlapping.

Noah

On Thu, 1 Jul 2004 18:26:51 -0600, David Waite <mass@akuma.org> wrote:
> 
> 
> On Jul 1, 2004, at 6:00 PM, Noah Campbell wrote:
> 
> > I think we're on the same page in regards to this.  I'm having to dig
> > into the specs for c14n and at least how I interrept it the prefix of
> > the QName from the localpart must be preserved in the original
> > document.
> 
> The full QName, prefix, namespace URI and local name must all be
> preserved.
> 
> >
> > As I understand c14n (and I'm learning volumes as I prepare to
> > implement a C14NSaver) the namespace is discarded in the
> > cananocialized form.  Sure the output is not xml valid, or namespace
> > collisions cause a lossy form, but this is okay.  The point is not to
> > have a valid doc but a representation that will be unique on a byte
> > level.
> 
> The namespace definitions are always there if you canonicalize a full
> document; redundant definitions are removed. Actually, only if you do
> exclusive canonicalization on a partial document will namespaces be
> removed, and only if no attributes or elements names included in the
> canonicalized form are using them. The issue I stated below was that
> the prefix was not preserved, so elements may switch prefixes  on save
> to whichever one happens to have precedence internally. This breaks
> canonicalization, although it does not change the meaning of the
> document. It also breaks infoset fidelity (xml-infoset , sections 2.2
> and 2.3 property 3).
> 
> And I thought I was writing the C14NSaver. :) Would you like to work
> together?
> 
> 
> 
> -David Waite
> 
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