Fwd: Re: [ubl-security] Re: Sample instances

["G. Ken Holman" <gkholman@CraneSoftwrights.com>]

Date: Mon, 16 Aug 2010 10:22:35 +0800
From: Tim McGrath <tim.mcgrath@documentengineeringservices.com>
Organization: Document Engineering Services Ltd.
To: "G. Ken Holman" <gkholman@CraneSoftwrights.com>
CC: Andrea Caccia <andrea.caccia@studiocaccia.com>,
  Jon Bosak <bosak@pinax.com>
Subject: Re: [ubl-security] Re: Sample instances

(Ken: please forward to ubl-security)

As i tried to explain I have lost track of what we are trying to do 
here. I thought the ubl-security SC was trying to create a profile of 
the UBL cac:Siganture that could identify a XADES digital signature. 
Now we are designing UBL extensions for XADES digital signatures and 
trying to relate them to parts of a UBL document?

If we need an extension to store a XADES signature then this 
extension does not need to refer to the main document (or parts of 
it). I would have thought that the main document (or parts of it) 
would refer to the signatures in the extension. In other words the 
extension will just contain the required XADES structures. The UBL 
cac:Signature allows us to refer to parts of the document (such as 
the extension) - isn't that what we should be doing here. Why make 
this so complicated? Why design new structures? The direction seems 
wrong to me.

Am i missing something? Perhaps we should try to summarize what we 
are aiming for before getting into naming issues.
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n:McGrath;Tim
org:Document Engineering Services Ltd.
email;internet:tim.mcgrath@documentengineeringservices.com
title:Managing Director
tel;work:+45 36 95 33 58
tel;cell:+61 438 352228
url:www.documentengineeringservices.com
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