This is not cancatenation, it's a collection. See
http://www.lowagie.com/itextwiki/doku.php/collections.
Paulo
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Daniel Oliveras
> Sent: Wednesday, September 10, 2008 11:33 AM
> To: [email protected]
> Subject: [iText-questions] Fwd: Can iText concatenate
> multiple signed PDFs?
>
>
> I attach to this mail an example of what I mean.
>
> I have two signed pdf files "Firmat.pdf" and "firmat_2.pdf".
> With Acrobat professional I can "combine" the two signed pdfs
> in one single pdf files that contains all the files and
> signatures resulting in the pdf "paquete1.pdf"
>
>
>
> On Wed, Sep 10, 2008 at 12:10 PM, Paulo Soares
> <[EMAIL PROTECTED]> wrote:
>
>
>
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On
> > Behalf Of Daniel Oliveras
> > Sent: Wednesday, September 10, 2008 10:17 AM
> > To: [email protected]
> > Subject: [iText-questions] Can iText concatenate
> multiple signed PDFs?
> >
> > Hi,
> >
> > I am developing an application that given a directory with 2
> > or more PDF files generates a unique PDF file that contains
> > the PDF files in the directory concatenated. With iText this
> > works perfectly, and I can add bookmarks too. But when I
> > tried to concatenate PDF files that are signed the signatures
> > are missing.
> > Searching this mailing-list I found some questions on similar
> > topics, but in any case only one PDF were signed, so you can
> > concatenate de unsigned PDF to the signed one using
> > pdfstamper. In my case is possible to have all the PDF files
> > signed, so I need a way to concatenate multiple signed PDF
> > files to obtain only one resultant PDF with all the
> > signatures in his original place.
> > The Adobe Acrobat Professional 8.1 application is capable of
> > doing this, but I'm searching for a solution in which we do
> > not need Acrobat because the application I am programming
> > needs to be implemented as a web service.
> >
>
>
> You can't concatenate several signed PDFs and expect
> the signatures to remain valid. Acrobat can't do it either
> and if you say it can you must be talking about something else.
>
> Paulo
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