I don't see what you question has to do with iText or even with PDF signatures.
Paulo
________________________________
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Quevedo
Fernández, Francisco José
Sent: Monday, June 18, 2007 11:55 AM
To: itext-questions@lists.sourceforge.net
Subject: [iText-questions] Is it possible add a external
(previouscalculate) sign to pdf?
Hello, I have one XML file (with user info from a web form) and I apply
nfop (xsl-fo processor) to transform the xml file to a PDF file. The PDF file
is print and manual sign for three different persons.
I need to include digital sign into the application. I must utility one
applet of my organization. This applet generate digital sign (PCKS#7, XMLSIG,
XAdES) from files by uses the certificate’s client.
I pass the pdf file into a Base64 and I obtain his digital sign by the
applet. This process generate one xml file with the next structure:
<?xml version="1.0" encoding="UTF-8"?>
<documentoSGIFE>
<documentoOriginal Id="original" encoding="base64"
nombreFichero="prueba.pdf">
<!—PDF IN BASE64-->
</documentoOriginal>
<ds:Signature Id="Signature001"
xmlns:ds="http://www.w3.org/2000/09/xmldsig”>
<!—DIGITAL SIGN + CERTIFICATE X509 Person A-->
</ds:Signature>
</documentoSGIFE>
When this document will be sign by person B, I’ll have the next xml:
<?xml version="1.0" encoding="UTF-8"?>
<documentoSGIFE>
<documentoOriginal Id="original" encoding="base64"
nombreFichero="prueba.pdf">
<!—PDF IN BASE64-->
</documentoOriginal>
<ds:Signature Id="Signature001"
xmlns:ds="http://www.w3.org/2000/09/xmldsig”>
<!—DIGITAL SIGN + CERTIFICATE X509 Person A-->
</ds:Signature>
<ds:Signature Id="Signature002
xmlns:ds="http://www.w3.org/2000/09/xmldsig”>
<!—DIGITAL SIGN + CERTIFICATE X509 Person B-->
</ds:Signature>
</documentoSGIFE>
The question is: ¿Can I add these sign to original PDF for show it to
the user C?
Thanks and excuse me.
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