Daniel Perez Alvarez,
Daniel Perez Alvarez wrote:
> I've found the following about the signature in the signed PDFs I have to
> timestamp:
>
> * The '/Filter' entry contains 'Adobe.PPKLite'
> * The '/SubFilter' entry contains 'adbe.x509.rsa_sha1'
> * The X509 certificate is stored in the '/Cert
Daniel Perez Alvarez wrote:
> So, if the signatures are PKCS#1, does the situation change?
No, timestamping has to be done at the moment you're signing.
> PD: If PAdES-LTV is the way to go,
Yes, but that's not even implemented in Adobe Reader,
and it will only be in the PDF specification somewhe
to go, I will look deeper into it, but I haven't
found many examples on the net, so I'm a bit wary.
Daniel Pérez Álvarez
Technological Solutions
Atos Origin
+34 91 126 7310
C/ Albasanz, 16
28037 Madrid
Spain
----------
Date: Tue, 8 Jun 2010 12:25:53 -0700
Daniel Perez Alvarez,
Daniel Perez Alvarez wrote:
> My problem is that I have some signed PDFs, and now I have to timestamp
> them.
>
> I'm quite a newbie regarding the PDF format... I'm using iText, and I've
> seen that I can add a PdfPKCS7 signature with a timestamp to the PDF, but
> I don't k
l.per...@atosorigin.com]
Sent: Tuesday, June 08, 2010 12:59 PM
To: itext-questions@lists.sourceforge.net
Subject: [iText-questions] Add timestamp to signed PDF
Hello,
My problem is that I have some signed PDFs, and now I have to timestamp them.
I'm quite a newbie regarding the PDF format... I
Hello,
My problem is that I have some signed PDFs, and now I have to timestamp them.
I'm quite a newbie regarding the PDF format... I'm using iText, and I've seen
that I can add a PdfPKCS7 signature with a timestamp to the PDF, but I don't
know how to retrieve an existing signature and append/m
