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Re: XForms and XML Signatures : How to get the presentation layer?

From: David Landwehr <david.landwehr@picoforms.com>
Date: Wed, 20 Jun 2007 14:25:54 +0200
Message-ID: <46791CD2.1020109@picoforms.com>
To: duryodhan <duryodhan125@gmail.com>
CC: www-forms@w3.org

Well for what you are asking I certainly have no answer. This is mostly 
a question about what you can achieve with the implementation you are 
using. Certainly there are implementations with support for signing, Dr. 
Boyers implementation is such an implementation and all implementations 
would in one way or another be able to provide signing.

I think John Boyer is the best capacity in the Working Group with 
regards to xml signatures so I bet he can give you much better advice 
compared to me.

Best regards,
David


duryodhan skrev:
>
> Hey,
> Well my basic question still hasn't been answered! :)
>
> What should I ask the user to sign?
> the whole XHTML Doc? Or is there some magical XSL transform that will
> let me store the whole presentation layer + instance data to a XML
> doc?
>
> Again, if I sign the XHTML doc , there could be changes to the
> external stylesheet ...
>
> Now, I know what the problems are and why we all are stuck. I think
> that right now there really isn't a method to enable really strong
> signatures that can't be repudiated by any human (like saying the
> "virus did it" or "you could cover it with some other label and it
> wouldn't matter" etc.), but my question is about what is maximally
> technically feasible as of now? What is the strongest digital
> signature you can generate right now? Also, is there any form of
> XForms + XHTML Signing being used anywhere ? (like the e.g in "Secure
> web forms with Client side signatures" by Mikko Honkala )
>
> Once again, I could be wrong , so please correct me if that is the case .
>
> Regards,
> duryodhan
>


-- 
David Landwehr
Senior Product Architect
PicoForms
web:    http://www.picoforms.com
e-mail: david.landwehr@picoforms.com
phone:  +45 24 27 55 18
Received on Wednesday, 20 June 2007 12:35:24 GMT

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