At 12:12 PM 9/15/2003 +0200, Andreas Kuehne wrote:
>Content-Transfer-Encoding: 7bit
>
> > > - "selection transforms" A -> B, and the
> > > - "signature transforms" A -> C, B -> C
>
>Shouldn't the reciever be able to reapply the mentioned 'signature
>transform' using the enveloped data ? It doesn't make sense for me to
>envelope some data which you could NOT use as a starting point for the
>'signature transform'. You couldn't verify this signature without
>additional access to the original data. This would proof the enveloped
>data as redundant.
I think the idea is we'd envelope B, in the case where B is the starting
point for the "signature transforms".
So the question is whether the server needs to be able to do an A->B
transform, such as selecting a particular element from one of the Input
Documents. Alternatively, we would require the client to do any "selection
transforms" on the client side, and send the resulting B elements as just
other Input Documents.
Trevor
